Environmental Challenges Research Articles

Evolving testing scenario generation and intelligence evaluation for automated vehicles

Interaction between the background vehicles (BVs) and automated vehicles (AVs) in scenario-based testing plays a critical role in evaluating the intelligence of the AVs. Current testing scenarios typically employ predefined or scripted BVs, which inadequately reflect the complexity of human-like social behaviors in real-world driving scenarios, and also lack a systematic metric for evaluating the comprehensive intelligence of AVs. Therefore, this paper proposes an evolving scenario generation method, employing deep reinforcement learning (DRL) to construct human-like BVs that interact with AVs, and this evolving scenario is designed to test and evaluate the intelligence of AVs. Firstly, a class of BV driver models with human-like competitive, mutual, and cooperative driving motivations is designed. Then, utilizing the Twin Delayed Deep Deterministic Policy Gradient (TD3) algorithm and an improved level-k training procedure, the three distinct driver models acquire game-based interactive driving policies. And these driver models are combined to generate evolving scenarios in which they can interact continuously and evolve diverse contents. Next, a framework including safety, driving efficiency, and interaction utility are presented to evaluate and quantify the intelligence performance of 3 systems under test (SUTs), indicating the effectiveness of the evolving scenario for intelligence testing. Finally, the complexity and fidelity of the proposed evolving testing scenario are validated. The results demonstrate that the proposed evolving scenario exhibits the highest level of complexity compared to other baseline scenarios and has more than 85% similarity to naturalistic driving data. This highlights the potential of the proposed method to facilitate the development and evaluation of high-level AVs in a realistic and challenging environment.

A sense of seaweed: Consumer liking of bread and spreads with the addition of four different species of northern European seaweeds. A pilot study among Swedish consumers.

Current food systems pose one of the greatest health and environmental challenges of the 21st century. Expanded utilization of seaweed for food in Western societies seems like one promising measure in the transition toward sustainable food systems. However, introducing and expanding seaweed to new markets brings certain challenges, such as limited food acceptance and availability. In this pilot consumer study, four common northern European seaweed species (Saccharina latissima, Alaria esculenta, Palmaria palmata, and Ulva sp.) were introduced into two complementary plant-based products (bread and spread), which were presented to consumers (n=49 (bread), n=52 (spread)) in a Swedish setting. The consumers’ liking of the products was evaluated based on a 9-point hedonic scale, and the product characteristics were determined by texture, pH, and color analysis. Whereas the different spreads’ pH was similar, the texture and color overall varied more between the different samples. Overall, the consumers slightly liked the two seaweed-containing products, with taste/flavor and texture being main contributing factors to the consumers’ liking. For the bread, S. latissima was liked best as a supplement. S. latissima and A. esculenta were liked best for the spread, whereas P. palmata received the lowest scores. The preference for brown seaweeds may relate to their relatively more neutral taste/flavors and finer structure, whereas the lower scores for P. palmata may be explained by its marine-associate flavors and coarser structure. The studied consumer liking of seaweed-based products can become valuable for developing and improving future seaweed products and increasing their availability in Western food cultures.

Laser-Induced Carbonization of Ni-BDC Layer on PET: Functional Upcycling of Polymer Wastes Towards Bend Resistive Sensor

The growing accumulation of waste polyethylene terephthalate (PET) presents a significant environmental challenge requiring the development of sustainable recycling methods. In this study, a novel approach for upcycling preliminary recycled waste PET into bend resistive sensors through laser-assisted carbonization of surface-grown Ni-BDC (BDC = 1,4-benzenedicarboxylate) has been proposed. The fabrication process involves the solvothermal formation of a homogeneous Ni-BDC layer, followed by treatment with a 405nm laser system to create a graphene-like layer with enhanced conductivity (sheet resistance 6.2 ± 3.4 Ω per square). The developed sensor demonstrates remarkable robustness, a linear response in a wide bending angle range (6 to 44º), as well as excellent mechanical stability and stiffness. This contribution paves the way for the development of high-value materials from waste PET as a resource for applications in the Internet of Things, otherwise discarded materials.

Synergistic Effect of CexOy and Zn ion within the ZIF-zni Framework for Enhanced Electrocatalytic Reduction of CO2

In recent years, human activities have led to an unprecedented rise in atmospheric CO2 levels, causing significant environmental challenges. To combat this issue, there’s growing interest in the conversion of CO2 into valuable chemicals. This study reports the synthesis and electrocatalytic evaluation of CexOy/ZIF-zni catalysts for CO2 reduction. The catalyst exhibited remarkable selectivity to CO, achieving excellent Faradaic efficiency (FE) of 87.7% at an overpotential of 170mV. The findings revealed that by adjusting the applied potential during electrolysis, it was possible to tune the catalyst's electronic properties. This resulted in a reduced overpotential and a lower CO onset potential of -300 mV. Density functional theory (DFT) calculations revealed that the synergistic interaction between the oxygen of CexOy and the Zn ion of the ZIF-zni, exposes cerium as the active site for CO2 activation. This interaction also stabilizes the crucial *COOH intermediate, facilitating the electrochemical CO2 reduction reaction.

Soil fertility in mixed crop-livestock farming systems of Punjab, Pakistan: The role of institutional factors and sustainable land management practices

CONTEXTSoil salinization is a significant environmental challenge prevalent in arid and semi-arid regions, causing adverse effects on crop yields and jeopardizing household food security. Previous research has examined the influence of institutional dynamics and the adoption of sustainable land management practices in bolstering agricultural output, and some have investigated the interplay among socioeconomic determinants, institutional frameworks, and the uptake of climate-resilient and sustainable methodologies, or the association between soil health and agricultural productivity. Yet, there has been a lack of studies that considered this relationship altogether and their role in enhancing soil fertility. OBJECTIVEWe investigate the relationship among socioeconomic and institutional factors, adoption of sustainable land management practices, and the resulting changes in soil fertility between 2016 and 2019 within the context of mixed crop-livestock farms in the three irrigated agroecological zones of Punjab, Pakistan. A household survey was conducted in 2019 to complement soil attributes data collected by the Government of Punjab in 2016. Households that implemented sustainable land management practices between 2016 and 2019 were analysed to investigate the effect of various factors on soil fertility, including the adoption of sustainable land management practices and their influence on soil fertility dynamics. METHODSA structural equation model was employed to examine the relationship among exogenous variables, moderating variables, and endogenous variables, to explain their collective influence on soil fertility between the two periods. RESULTS AND CONCLUSIONSThe key findings highlight the significant role of institutional factors, including access to formal information channels such as extension services, demonstration trials, and credit facilities, alongside secure land rights, in predicting the adoption of sustainable land management practices such as gypsum application, laser land leveling, farmyard manuring, and agroforestry. Furthermore, specific SLM practices, particularly agroforestry featuring intercropping with Acacia spp. and farmyard manure application, exhibited positive impacts on change in soil organic matter, albeit with agroforestry showing a negative influence on soil phosphorus levels. The adoption of gypsum and LLL displayed positive effects on soil phosphorus levels over time, contrasting with LLL's adverse impact on soil organic matter. SIGNIFICANCEOur findings suggest that soil fertility benefits from policies enacted through public-private partnerships that lead to improved access to sustainable land management information, reduced credit barriers, establishment of local soil testing facilities, and expedited land entitlement processes. These findings highlight the critical role of collaborative partnerships and institutional arrangements in enhancing agricultural productivity and environmental sustainability.

PVDF-Halloysite-Ceria Multifunctional Membrane for One-step Treatment to Industrial Effluent

Industrial wastewater, containing diverse pollutants like dyes and oils, poses detrimental environmental challenges. Membrane technology addresses this complexity well but requires tailored nanofiller modifications that enhance hydrophilicity, oleophobicity, and antifouling potential for efficient separation. In this context, our work focuses on the development of mixed matrix membranes (PV-H-C) – PVDF, halloysite nanotubes (HNTs), and ceria nanoparticles – for effective dye and oil-water emulsion separation, enabling high flux recovery. The tubular structure of HNTs, with a lumen, enables the encapsulation and controlled distribution of ceria nanoparticles, preventing their agglomeration and leading to more uniform dispersion within the membrane matrix. HNTs porous structure, high surface area, and numerous adsorption sites within its nanotubes excel in rapid dye adsorption and ceria’s inherent hydrophobic properties along with low surface energy, forms a barrier against oil adhesion and spreading. Optimal results were achieved by loading 2% HNT and 1% ceria in the PVDF matrix, ensuring improved membrane performance. HNTs enhanced hydrophilicity and achieved pure water permeate flux of 1698L/m2.h.bar. Developed membranes are super-oleophobic with an underwater contact angle of 132° + 3°and show a 100% increase in dyes and oils separation efficiency as compared to the pristine PVDF membranes. This unique integration of ceria with halloysite nanotubes in PV-H-C membranes is pivotal, bestowing exceptional anti-fouling characteristics and reusability, while providing a one-step, comprehensive solution for the effective treatment of complex industrial wastewater that encompasses both oil and complex dyes.

Environmental risk mitigation of lambda-cyhalothrin using tryptophan-modified magnetic nanoparticles: A sustainable emergency response strategy

Lambda-cyhalothrin, a synthetic pyrethroid pesticide extensively used in agriculture, poses significant environmental challenges due to its extensive and long-term application. To remediate pollution caused by such organic contaminants, our study introduces a rapid and convenient one-pot synthesis method for creating amino acid-modified magnetic nano-adsorbents (AA-MNPs). Research found that after modification with tryptophan (Trp), the adsorption effectiveness of MNPs on Lambda-cyhalothrin significantly increases. This modification enhances the carbon content of the magnetic nanoparticles, while minimally affecting the magnetic saturation of the MNPs. Trp-MNP exhibited an approximate particle size of 450 nm and a specific surface area of 52.36 m2/g. The isotherm and kinetic experiments were well-fitted to the Liu isotherm model and the pseudo-second-order model, respectively. Thermodynamic assessments suggested that the adsorption process is spontaneous and exothermic. Results indicated that the maximum adsorption capacity 144.34 mg g−1 for Trp-MNPs at 298 K, outperforming adsorbents reported in the literature. The half-adsorption time was reduced to 8 min at 298 K with an initial concentration of 60 mg/L. This enhancement was likely influenced by the aromatic ring modification and hydrophobicity of Trp-MNPs. The study explored potential removal mechanisms from a tri-phase perspective, investigating the interactions between the adsorbent, adsorbate, and solvent.

Preliminary study on the application of waste bivalve shells as biofiller for the production of asphalt concrete

The shells of molluscs are a common by-product of the aquaculture industry, and their management represents a significant environmental challenge. Although mollusc farming is considered a low-impact food production, improper shell management could make bivalve farming less environmentally efficient. To address this issue, research is exploring new approaches to reduce waste accumulation and convert shell waste into a valuable resource. The shells of bivalves are functional materials from biological waste, composed mainly of CaCO3, and can be used as secondary raw materials in various applications. In order to meet the demanding environmental target, the road sector is increasing the use of recycled materials in new construction or maintenance of old ones. The present work illustrates the results of several laboratory tests carried out to determine the physical and chemical properties of three different crushed bivalve shells waste for the application as filler in asphalt concretes. The present study highlighted the similarity of these materials with the limestone filler since no significant discrepancy between the mechanical (or technical) performance of the biofiller and the traditional limestone filler are detected through the test carried out, promoting their use in new asphalt concrete mixtures.

Path to clean and sustainable energy from nuclear and renewable sources: Evidence from France

France is one of the countries that have made commendable progress towards accomplishing sustainable development goals but still struggles with combating environmental challenges. Decarbonizing the energy sector by deploying clean energy and reducing fossil fuels in the energy mix are essential steps. The study uses annual time series data from 1980 to 2021 and employs the ridge regression estimation technique to estimate a twice-differentiable transcendental production function, which approximates the second-order Taylor series to explore the potential for such decarbonization for France. The study finds that substitution possibilities exist between clean energy and fossil fuels, with substantial substitution possibilities coming from nuclear energy. Nuclear energy and renewables are found to be complements that can be deployed concurrently, but since nuclear energy already constitutes a significant proportion of clean energy for France, the study recommends increasing the proportion of renewable energy in the overall energy mix as the most plausible path to decarbonization. Other complementary sustainable energy policies are recommended in the body of the paper.

Role of resources rent, research and development, and information and communication technologies on CO2 emissions in BRICS economies

The continuous increase in pollution levels has become a severe threat to the globe, and practitioners are trying their best to deal with environmental challenges to attain for attaining the targets of sustainable development goals (SDGs). Under the environmental aspects, the world has introduced numerous solutions to become clean and green while the problem remains intact. Therefore, this study is an attempt that investigate the impact of natural resources rent, research & development expenditures (R&D), information and communication technologies, and renewable energy consumption on carbon emissions under the framework of the STIRPAT model for BRICS economies during 1998–2021 by using CS-ARDL method. The empirical outcome shows that economic growth (EG), urbanization, and natural resources increase environmental pollution. On the other hand, R&D expenditures, renewable energy and digitalization support the sustainability theme. Furthermore, this study uses the Augmented Mean Group, Common Correlated Effect Mean Group and Panel Quantile Regression to validate the prior outcomes. Finally, the inverted connection between natural resource rents and emissions is validated in BRICS economies. Based on the empirical outcomes, this study suggests policy implications for attaining the targets of SDG-13 (climates change), SDG-07 (affordable and clean energy), SDG-08 (decent economic growth), SDG-09 (innovations, research and development), SDG-11 (sustainable cities and societies), and SDG-12 (responsible consumption).

Insights into remediation of cadmium and lead contaminated-soil by Fe-Mn modified biochar

Heavy metal contamination, particularly by lead and cadmium, poses a significant environmental challenge. Indiscriminate disposal of crop residues exacerbates environmental concerns. In this study, broad bean straw was utilized to produce biochar (BC), and further modifications were made using FeCl3-6H2O and KMnO4 to obtain Iron-Manganese Modified Biochar (FMBC) for remediating cadmium and lead-contaminated soil. Results show that both BC and FMBC increased soil pH, available phosphorus, and potassium compared to the control groups. Adding 5% BC led to a notable reduction of 60.98% in available cadmium and 51.63% in available lead. Simultaneously, FMBC decreased active cadmium and lead by 57.51% to 73.73% and 52.25% to 69.87%, respectively. Furthermore, FMBC decreased the content of cadmium and lead in the unstable state while increasing content in the residual state, demonstrating its ability to reduce accumulation in plant tissues. FMBC adsorption mechanisms primarily involve surface complexation and co-precipitation, where oxygen-containing functional groups form stable complexes with free cadmium and lead ions. In conclusion, FMBC proved to be an effective, environmentally friendly soil remediation agent with strong adsorption capabilities and a prolonged shelf-life. This provides a promising solution to alleviate the pollution of heavy metals such as cadmium and lead in soil.

The influence mechanism of multi-government environmental regulation synergy on corporate environmental responsibility

The United Nations Development Programme (UNDP) calls for enhanced global efforts to achieve the 17 sustainable development goals by 2030, highlighting the crucial role of corporate environmental responsibility (CER) in advancing global sustainability. As a significant participant, China is leveraging its government-led environmental regulation (ER) system, which has a multi-level and multi-sectoral structure, to effectively combat climate change. However, the effect of this ER system, especially collaborative efforts among multiple government subjects, on CER remains unknown. Thus, this paper is the first attempt to investigate the effect and underlying mechanisms of multi-government ER synergy on CER from the perspective of government subject synergy. Using a dataset of Chinese A-share listed manufacturing firms from 2010 to 2021, this study finds the following. First, multi-government ER synergy boosts CER. Direct ER synergy, stemming from joint policy-making across departments, encourages CER in end-of-pipe governance. Indirect ER synergy, arising from administrative hierarchy constraints among multi-level governments, fosters CER in front-end governance. Second, financing constraints and executives’ attention to CER are two key channels through which multi-government ER synergy influences CER. Third, firms with political connections, those in heavily polluting industries, or those located in central and western regions adopt more proactive CER strategies under multi-government ER synergy. This paper expands research on government collaborative governance from the regional macro-perspective to the micro-firm level, providing valuable insights for countries worldwide, particularly emerging economies that share similar characteristics with China, to contain rapidly growing environmental challenges and advance global sustainability.

Analysis and Treatment of Tannery Waste Water by using Combined Filtration and Coagulation Treatment Process

Abstract: Industry generates significant volumes of waste water laden with various pollutants, including suspended solids, organic compounds and heavy metals presenting considerable environmental challenges. This study proposes an innovation approach for the analysis and treatment of tannery waste water using a combined filtration and coagulation treatment process. The analysis phase involves a comprehensive characterization of the tannery effluent, identifying key contaminants and their concentrations. This understanding informs the design of an efficient treatment strategy. The treatment process integrates two key techniques i.e. filtration and coagulation.

A Study on the Problems and Prospects of Green Marketing in India

Abstract: Environmentalism has fast emerged as a worldwide phenomenon. Economic forces practicing green marketing strategies to respond the problems and issues of environmental challenges. Many consumers now display concern about environmental deterioration. Increasingly often they ask how much impact a product will have on the environment during its lifespan or during its disposal. This is the major impetus for green products and green marketing. Based on the data collected through a various literatures and studies, the paper makes an assessment of the extent of the problems and prospects of green marketing in India and lists implications of the study findings for the government and non-governmental organizations engaged in marketing of green ideas and products in the country. In the concluding section, suggestions provided for undertaking more thorough investigations in the area.

Investigating Natural Polymer Nanocomposites in Relation with Eco-Friendly Potential in Environmental Contexts

Abstract: The escalating global waste crisis and precipitous decline in biodiversity have emerged as two of the most pressing environmental challenges of our time. These interconnected issues pose grave threats to the delicate balance of ecosystems and the myriad species that inhabit them. This research Endeavor seeks to harmonize these critical spheres by proposing an integrated approach to waste reduction and wildlife preservation, recognizing their inextricable linkages within the intricate web of life. This research explores the synergistic potential of integrating waste reduction strategies with targeted wildlife preservation efforts. By promoting circular economies, sustainable production and consumption practices, and innovative recycling technologies, the influx of harmful pollutants into ecosystems can be mitigated, alleviating the burden on vulnerable species and habitats. Complementarily, robust conservation measures, ecosystem restoration initiatives, and the engagement of local communities can safeguard biodiversity, thereby maintaining the ecological integrity that underpins sustainable waste management.

Sustainability and environmental impact in the LNG value chain: Current trends and future opportunities

The liquefied natural gas (LNG) industry plays a crucial role in the global energy landscape, offering a cleaner alternative to traditional fossil fuels. However, the LNG value chain presents environmental challenges that must be addressed to ensure long-term sustainability. This paper examines current trends and future opportunities for enhancing sustainability and reducing environmental impact across the LNG value chain. The LNG value chain comprises several stages, including natural gas extraction, liquefaction, transportation, regasification, and distribution. Each stage presents unique sustainability challenges, such as methane emissions during extraction and transportation, energy-intensive liquefaction processes, and the carbon footprint of regasification and distribution. Current trends in the LNG industry focus on mitigating these challenges through various strategies. These include the adoption of advanced technologies for methane detection and reduction, the use of renewable energy sources for liquefaction, and the implementation of efficient regasification and distribution practices. Additionally, there is a growing emphasis on stakeholder engagement, transparency, and reporting to enhance sustainability performance across the value chain. Future opportunities for improving sustainability in the LNG value chain lie in the continued development and deployment of innovative technologies. These include carbon capture and storage (CCS) technologies to reduce emissions, the use of renewable natural gas (RNG) as a feedstock, and the integration of LNG with renewable energy sources to create hybrid energy systems. Addressing sustainability and environmental impact in the LNG value chain requires collaboration among industry stakeholders, governments, and regulatory bodies. By implementing best practices, embracing innovation, and prioritizing sustainability, the LNG industry can continue to play a vital role in the transition to a cleaner and more sustainable energy future.

How Does a Decision-Making Tool Enhance Spent Mushroom Substrate Valorization into Polysaccharides?

In mushroom farming, one kilogram harvested results in about five kilograms of spent mushroom substrate (SMS), posing an environmental management challenge. As an in-tune work with the concepts of circular economy, cleaner production, and waste minimization, this study has developed a mathematical model than analyzes the valorization potential of SMS through polysaccharide production. The in-depth mathematical model is based on a system dynamics approach, which explains the interactive interplay amongst the production process, related costs, energy consumption, and caused emissions. The model has been developed in a generic way. Meaning that it can be re-adjusted flexibly for a different cleaner production process. A user-friendly interface has been developed. Users can easily maneuver around the variables within the model that offers instantaneous insight into the environmental and economic impacts of SMS valorization. This interface was later integrated into an educational context to serve as an interactive decision-making tool for cleaner production modelling. The main purpose of the developed tool was to favor understanding of causalities between production chains, energy consumption, labor, emissions, and expenses. This tool has been tested on master’s degree students in a cleaner production course. Survey results show that 82% of students report the need to incorporate similar decision-making tools in their learning curriculum. In sum, the application of system dynamics to the valorization of SMS does not only present an attractive solution for this environmental problem but also shows great potential in setting educational backgrounds for an interactive and close-to-life learning process. It is recommended to develop more interactive tools available for students.

Chitosan/Graphene oxide/SiO2 Nanoadsorbents for the Removal of Cr(VI) from Wastewaters

The swift industrialization and urbanisation have led to the discharge of significant amounts of hazardous heavy metals into water environments. Heavy metal pollution is currently one of the most significant environmental challenges being addressed, attracting researchers due to its biotoxicity, and non-biodegradability even at minimal concentrations [1]. Chromium (Cr) is among the most prevalent heavy metal contaminants. Its oxidation state, Cr(VI), harms the environment yet has catastrophic consequences for human health [2]. It is removed by physical and chemical procedures such as ion exchange, chemical precipitation and electrochemical treatment. Yet, most of these procedures have downsides, such as the formation of hazardous sludge, causing disposal issues and the need for costly tools and monitoring systems [3]. Adsorption is regarded an appealing and favourable technology because to its ease of design, simplicity, and high efficiency. Carbon-based nanomaterials have been investigated as superior adsorbents in aqueous solutions for the separation of organic and inorganic contaminants. The current study recommends the usage of adsorbents based on graphene oxide (GO). GO is an oxygen-rich material that is produced during the oxidation of graphite. It features hydrophobic areas due to aromatic groups in the nanosheets' centres, along with a large number of hydrophilic functional groups such as hydroxy, aldehyde, epoxy, and carboxyl groups [4]. The latter allow GO to swell and perform electrostatic functions. Chitosan (Cs) is a great adsorbent since it is inexpensive, is biocompatible, and causes no secondary pollution. Its molecular chains include -NH2 and -OH groups, which can interact with heavy metal ions and give significant adsorption capacity [5]. Silicon dioxide (SiO2) nanoparticles with graphene oxide have better physical and chemical characteristics than graphene oxide-like surface area. Similar research has revealed that the presence of SiO2 increases the adsorbent's adsorption capacity for Cr(VI) [6]. The effect of the pH value, contact time and initial chromium concentration was examined in order to determine the feasibility of Cs/GO@SiO2. Its structure and the morphology were studied in detail by the application of BET, XRD, FTIR and SEM techniques. According to the results, the modification of Cs with GO@SiO2 enhanced the percentage removal of chromium ions, especially, in acidic conditions by using 0.5 g/L of the adsorbent. Experimental data of equilibrium were used to calculate adsorption isotherms. According to thermodynamics the spontaneous nature of their adsorption was confirmed. Overall, the results indicate that Cs/GO@SiO2 can be effectively employed for removal of chromium from aqueous solutions.

Current Trends and Solutions for Port Decarbonisation: A Systematic Literature Review

The energy sector is changing rapidly today. Global warming and other environmental challenges contributed to several international agreements aimed at fostering fossil-to-renewables debt. Decarbonization is undoubtedly a challenge, but at the same time a potential for development. The energy sector is made up of many sectors that have their own specificities, constraints, and opportunities. This study reflects progress in the decoration of ports. Ports are a place that often brings together energy consumers of different levels and types – water and land transport, as well as consumers of thermal energy, electricity, and fuels. The bibliometric analysis method is used at publication to analyze current trends. The results show that despite the existing challenges and historic delays with the entry of renewable energy sources into ports, scientific progress is prepared to offer solutions to decarbonise port energy consumers as well. These studies reflect that hydrogen technologies are the most prospective solution, but many aspects and links need to be considered to ensure the transformation of the sector.

Traditional and environmentally friendly attributes in products of highly design-oriented firms: an exploratory study in the perception of Italian entrepreneurs

Purpose The aim of this study was to empirically examine how much traditional attributes and green attributes characterize products within design-oriented firms. Further, we explored how these attributes relate to the perceived level of innovation of the firms.Design/methodology/approach An exploratory research was carried out in 86 Italian manufacturing companies that are members of the Industrial Design Association. Using the questionnaire method, the entrepreneurs’ perceptions have been analyzed. Data have been treated with hierarchical cluster analysis.Findings The analysis shows that environmental sustainability is the least important attribute of a design product and four clusters of highly design-oriented firms differ by design-product attributes. Further, the least green firms are also the least innovative in terms of incremental and general innovation.Research limitations/implications The small size of the sample and the provenance of firms from a single country imply limited generalizability, and further research on the topic is recommended.Practical implications Design-driven innovation based on traditional design attributes provides many competitive advantages to firms. However, given the growing concern about environmental challenges, investing in green attributes in design products allows for remaining competitive and more effective in innovation.Originality/value This study, for the first time, reveals the heterogeneity among design-oriented firms, particularly regarding the presence and assortment of traditional design attributes, as well as the incorporation of environmentally friendly attributes in their products. Moreover, the study uncovers the relationship between varying levels of green attributes in the offerings and the perception of the firm’s innovativeness.