Concept Of Green Environmental Protection Research Articles

High‐Performance Pomegranate‐Like CuF2 Cathode Derived from Spent Lithium‐Ion Batteries

AbstractWith the large‐scale application of lithium‐ion batteries (LIBs), a huge amount of spent LIBs will be generated each year and how to realize their recycling and reuse in a clean and effective way poses a challenge to the society. In this work, using the electrolyte of spent LIBs as solvent, we in situ fluorinate the conductive three‐dimensional porous copper foam by a facile solvent‐thermal method and then coating it with a cross‐linked sodium alginate (SA) layer. Benefiting from the solid‐electrolyte interphase (SEI) that accommodating the volume change of internal CuF2 core and SA layer that inhibiting the dissolution of CuF2, the synthesized CuF2@void@SEI@SA cathode with a pomegranate‐like structure (yolk‐shell) exhibits a large reversible capacity of ~535 mAh g−1 at 0.05 A g−1 and superb cycling stability. This work conforms to the development concept of green environmental protection and comprehensively realizes the unity of environmental, social and economic benefits.

High-Performance Pomegranate-Like CuF2 Cathode Derived from Spent Lithium-Ion Batteries.

With the large-scale application of lithium-ion batteries (LIBs), a huge amount of spent LIBs will be generated each year and how to realize their recycling and reuse in a clean and effective way poses a challenge to the society. In this work, using the electrolyte of spent LIBs as solvent, we in situ fluorinate the conductive three-dimensional porous copper foam by a facile solvent-thermal method and then coating it with a cross-linked sodium alginate (SA) layer. Benefiting from the solid-electrolyte interphase (SEI) that accommodating the volume change of internal CuF2 core and SA layer that inhibiting the dissolution of CuF2, the synthesized CuF2@void@SEI@SA cathode with a pomegranate-like structure (yolk-shell) exhibits a large reversible capacity of ~535 mAh g-1 at 0.05 A g-1 and superb cycling stability. This work conforms to the development concept of green environmental protection and comprehensively realizes the unity of environmental, social and economic benefits.

Polycarboxylate superplasticizer modified 3D graphene as long-term-efficient water-based lubricating additive under heavy load conditions

At present, due to the excellent properties of graphene, which can significantly enhance the performance of lubricants, researchers are conducting extensive studies on it. However, the poor dispersion of graphene limits its application in lubrication, which becomes an urgent problem for researchers to solve. Moreover, with the concept of green environmental protection becoming more and more popular, the research on water-based lubricants is of great significance. Therefore, we modify three-dimensional graphene (3DG) by polycarboxylate superplasticizer (PCE) to prepare a water-based lubrication nano-additive with long-term dispersion stability, named PCEG. PCEG nanomaterials can stably disperse in water for more than three months, which effectively solves this problem. Tests show that friction coefficient and wear volume of the lubricant with 0.5 wt% PCEG are reduced by 31.1 % and 23.1 %, respectively, compared to the base fluid at 20 N (2.7 GPa) heavy load conditions. The enhanced lubrication performance is attributed to the fact that PCEG, which has excellent dispersion stability, forms a strong adsorption and continuous dense lubrication film on the friction surface. In addition, it fills and polishes the grooves and pits, thus improving the friction-reduction and anti-wear properties. This study not only greatly solves the problem of poor dispersion stability of graphene and develops a nano-lubricant that is consistently effective under heavy load conditions, but also provides an important reference value for the subsequent development of high-performance and stable graphene-based lubricants.

Catkin-derived carbon microtubes for hybrid anode materials of high-performance lithium ion batteries

As a common biological waste, catkin shows negligible economic value and is hazardous to the environment and human respiratory health. To turn waste into treasure, in this work, a hybrid anode is successfully prepared by using the catkin-derived 1D hollow carbon microtube as dispersing agents to well disperse the MnO particles via a simple one-step pyrolysis method. Benefiting from the high electrical conductivity and hollow microtubule structure of the catkin-derived carbon, as well as the evenly dispersion of the MnO particles and the interfacial energy storage of Mn0/Li2O interfaces, the lithium ion battery based on the resultant MnO/C hybrid anode exhibits outstanding rate performance (high reversible specific capacity of 1365 mAh g−1 at a current density of 0.1 A g−1 and maintains 451 mAh g−1 even at a high current density of 6.4 A g−1) and superior cycling stability (retains ∼100 % after 1000 cycles at a current density of 0.8 A g−1). This work conforms to the development concept of green environmental protection and realizes the unity of economic and social benefits.

Improvement Measures for Marketing Strategies of New Energy Vehicles under the Concept of Green Consumption

With the concept of green environmental protection deeply rooted in people's hearts, green consumption is gradually recognized by more and more people. Under the trend of green consumption, China's automotive industry has made preliminary progress. This paper analyzes the current situation of the new energy vehicle industry and the marketing issues of new energy vehicles based on green consumption through the basic concept of green consumption. It proposes specific strategies for new energy vehicle marketing under green consumption, such as shaping green brands, reducing consumption costs, disseminating green lifestyles, and creating diversified marketing modes. The aim is to continuously improve China's new energy vehicle marketing capabilities.

Furoic acid-mediated konjac glucomannan/flaxseed gum based green biodegradable antibacterial film for Shine-Muscat grape preservation

Considering the growing threats to the environment and human health, such as plastic pollution and food spoilage, the development of naturally antibacterial food packaging materials with biodegradable capabilities has recently attracted considerable attention. This work applies the concept of green environmental protection to packaging technology, and a new type of green edible antibacterial packaging film was developed. The basic idea is to incorporate furoic acid (FA), which possesses excellent antibacterial activity, into the flaxseed gum and konjac glucomannan matrix (FK) as a filler to obtain a series of FK-FA bioactive films. This incorporation simultaneously improves the hydrophobicity and UV-barrier ability by 12.28 % and 42.87 %, respectively. Meanwhile, the diameters of the antibacterial zone of the FK-FA0.4% films (composite FK films containing 0.4 % FA) against E. coli and S. aureus increased to 38.98 mm and 36.29 mm from 24.00 mm of pure FK film, respectively. As a consequence, the grape sample sealed with FK-FA0.4% film remained edible on the 18th day of storage, while those packaged with commercial PE film and pure FK were seriously rotted and lost edible value on the 12th day, further confirming the enhanced preservation capacity. Finally, the as-prepared films were established to be biodegradable and were almost completely degraded within 25 days under simulated environmental conditions. Overall, these promising results show the potential of FK-FA films for replacing plastic packaging materials as eco-friendly edible films with prolonged shelf life for active packaging.

Risk-averse two-stage stochastic programming-based closed-loop supply chain network design under uncertain demand

In recent years, there has been a growing awareness and acceptance of the concept of green environmental protection among the public, primarily due to the worsening environmental issues and increased emphasis by governments on corporate social responsibility regulations. As a result, the management of closed-loop supply chains has gained significant attention from both businesses and researchers. Most stochastic programming models addressing closed-loop supply chain (CLSC) under uncertainty are typically designed to be risk-neutral. In this paper, a risk-averse two-stage stochastic programming (RATSSP) model for the closed-loop supply chain network design (CLSCND) problem considering facility capacity level decisions under uncertain demand. It is aiming to trade off the expected total profit and the profit risk, based on a given degree of responsive risk aversion. Due to the NP-hard nature of the CLSCND problem, this paper applies simplified swarm optimization (SSO), genetic algorithm (GA), and particle swarm optimization (PSO) algorithms to solve the problem. To improve the efficiency and quality of the obtained solutions, we propose a parallel computation meta-heuristic algorithm, parallel simplified swarm optimization (PSSO), along with parallel versions of PSO and GA. Computational results show the effectiveness of our proposed model, with PSSO demonstrating the best robustness and solution quality among the considered algorithms.

Calculation Theory of Counterweight Double-Row Pile Support for Deep Foundation Pit in Reclamation Area and Influence Analysis of Core Pile Parameters

The theoretical calculation of a counterweight double-row pile supporting structure is deduced and studied in this paper. The derived calculation method is applied to a Midas GTS NX simulation calculation. A case study of a deep foundation pit project in Shenzhen City is used to verify and analyze the simulation results and the field monitoring results. On this basis, the influence law of deformation parameters such as the row distance, pile diameter of back-row piles and load of the pit top on the pile of a double-row pile is further discussed. The results show that both the front- and back-row piles of counterweight double-row piles are overturning deformation, and the characteristics of the horizontal displacement are basically the same. The maximum value of the horizontal displacement of the pile is at the top and the minimum value is at the bottom. With the increase in the row distance and pile diameter, the horizontal displacement of the pile becomes smaller, and the change in the pile horizontal displacement under a top load is contrary to that. Moreover, the change in the row distance has a great influence on the horizontal displacement of the pile, followed by the load of the pit top, and the pile diameter of the back-row piles has the least influence. Due to the connection effect of the horizontal plate of the counterweight platform, the whole supporting structure is in the form of a hyperstatic structure. The back-row piles can withstand most of the lateral earth pressure, which effectively reduces the deformation of the front pile and improves the overall stiffness of the supporting structure, which is conducive to the excavation stability of the deep foundation pit. Therefore, its extensive use in the Linhai soft soil project can not only effectively reduce the number of internal supports and achieve the purpose of cost saving but also increase the construction face, which is beneficial to the development of dry construction organization and management, in line with the construction concept of green environmental protection and sustainable development advocated at present.

Green Chemistry Education Concept Transited by a Comprehensive Experiment of Citrus Peel Conversion and Utilization

To improve the comprehensive experimental skill of undergraduate and penetrate the concept of green chemistry education, we combined with the teaching needs of applied chemistry and designed a comprehensive experiment of preparing green drilling fluid treatment agent with waste citrus peel as raw material. Citrus fruit peel contains a lot of plant phenols, cellulose, soluble polysaccharides and other components, which can be used as drilling fluid to increase viscosity and reduce filtration loss. However, the proportion of water-soluble substance in citrus peel is low and the effect is poor. Therefore, to improve its utilization efficiency, we have applied different methods to modify the raw material, including the pretreatment, crosslinking, carboxymethylation to increase the proportion of water-soluble substance and improve its performance in drilling fluid. This experiment has introduced knowledge of organic chemistry to oilfield chemistry and combined experimental skills with field work, which will help to improve students' professional skills and field adaptability. In addition, using discarded citrus fruit peels as raw material in the experiment can practice the concept of green environmental protection, which is helpful to guide the future clean production of the oilfield and promote green and low-carbon development.

Synthesis of strong magnetic response ZIF-67 for rapid adsorption of Cu2.

With the acceleration of industrialization and urbanization, global water resources have been polluted. Among the water pollutants, heavy metals have caused great harm to the environment and organisms. When the concentration of Cu2+ in water exceeds the standard, the intake of the human body will mainly damage the nervous system. We use MOF materials with high chemical stability, specific surface area, adsorption, and other unique properties to adsorb Cu2+. MOF-67 was prepared with various solvents, and a stronger magnetic response MOF-67 with the largest surface area and best crystal form were selected. It quickly adsorbs low-concentration Cu2+ in water to purify water quality. At the same time, it can be recovered promptly through an external magnetic field to avoid secondary pollution, which conforms to the concept of green environmental protection. When the initial concentration of Cu2+ is 50mg/L for 30min, the adsorption rate reaches 93.4%. The magnetic adsorbent can be reused three times.

An Empirical Study on the Impact of Green Credit on Financial Performance of China’s Listed Banks

Abstract The concept of green environmental protection and sustainability is deeply rooted in China. Green credit has become an important social issue in recent years. Most Chinese financial institutions are also actively participating and investing in this field, especially banks. In order to explore the correlation between banks' participation in green credit business and banks' financial performance, this paper collects the green credit balance, green credit ratio, return on total assets, non-performing loan ratio and other data of 16 major listed commercial banks in China from 2011 to 2019. At the same time, econometric modelling is built using the system GMM regression analysis method. This focuses on the impact of commercial banks' green credit business on their profitability. The final research results certify that banks' increasing investment in green credit has a positive impact on promoting profitability, both showed a positive correlation. Therefore, this paper suggests that banks should focus on the development of green credit business, which is beneficial to both the financial performance of banks and the construction of an environmentally sustainable society. JEL classification numbers: P34. Keywords: Green credit, Green credit, Bank financial performance.

Speciation Analysis and Pollution Assessment of Heavy Metals in Farmland Soil of a Typical Mining Area: A Case Study of Dachang Tin Polymetallic Ore, Guangxi

To explore the distribution characteristics and degree of pollution of heavy metals in the farmland soil around the Dachang tin polymetallic mining area in Guangxi, a total of 140 soil samples were collected around the mining area in this study. The total amount and various forms of seven heavy metals (Cu, Pb, Cd, Cr, Zn, As, and Ni) were analyzed by inductively coupled plasma mass spectrometry, and the improved continuous extraction method of heavy metal speciation analysis in the soil, the potential ecological risk index (RI), the and Nemerow evaluation index (PN) were used to evaluate pollution characteristics of the soil and the bioavailability of heavy metals. Corresponding remediation suggestions were given according to the pollution degree. The results show that the whole soil in the study area is acidic, reducing, and the content of organic matter is low. The average content of heavy metal elements is higher than the background value of Guangxi, among which Cd, Pb, and As exceed the control value and are the main elements of pollution. The speciation analysis of heavy metals in soil shows that Cd is dominated by the ion exchange form; Cu is mainly residual and in a humic acid combined form; and the rest of the elements are mainly in residual form. Among the seven heavy metals, Cd has the strongest mobility, biological toxicity, and ecological risk, followed by As, Ni, and Zn. The overall pollution level of the soil in the study area is heavily polluted (PN = 39.6), which is a very strong ecological risk level (RI = 2196.9), and the main pollutants are Pb, As, and Cd; Cd pollution is the most serious. Correlation (CA) and principal component analysis (PCA) indicate that the pollution sources of Pb, Cu, Zn, Cd, and As among the seven elements were mainly controlled by tailings accumulation, mining, and transportation, and the sources of Cr and Ni were controlled by soil-forming parent materials. Furthermore, according to the actual situation of the farmland around the mining area, two remediation suggestions are put forward: (1) use stabilization remediation technology to clean up the pollution source, such as calcium dihydrogen phosphate to reduce the bioavailability of the most polluted elements, Cd and Pb, in the soil; (2) under the concept of green environmental protection, use Typha orientalis Presl to repair the industrial and mining wasteland and some unused land.

A highly stable bio-based plasticizer constructed from renewable acids for plasticizing and enhancing the optical properties of poly(vinyl chloride)

The current research efforts in the plasticizer industry should focus on finding renewable biomass chemical feedstocks to synthesize non-toxic and effective bio-based plasticizers to adapt the concept of green environmental protection.

The Effect of Green Organizational Culture, Green Competence and Organizational CompetenceonEmployee Performances(ACase Study of Green Hotels in Yogyakarta and Center Java)

This study aims to analyze the impact of green organizational culture on employee performance, analyze the impact of green competence on employee performance, and analyze the impact of organizational engagement on employee performance in green hotels in YogyakartaThe survey method used in this research included 540 people, including all employees of five-star hotels in Central Java and Yogyakarta that implementthe concept of green environmental protection. The sampling technique used the Slovenian formula, resulting in data from 110 study samples. Then analyze the collected data. The analysis technique used structural equation modeling (SEM) analysis.The results show that green organizational culture has a significant impact on employee performance, and that green competence also has a significant impact on employee performance, and then the importance of organizational engagement on employee performance

Discussion on Ecological Land Consolidation under the Background of Rural Revitalization

The current domestic land consolidation project management has basically realized the regularization development, but with the overall popularization of green environmental protection concept and the continuous improvement of related work attention, the sustainable development of land ecological consolidation work is very important. For a long time, the imbalance between supply and demand of rural land use function is one of the main causes of rural problems. Based on the perspective of rural revitalization, this paper explains the mutual feed-back relationship between rural land consolidation and rural revitalization, and discusses how to achieve the balance between supply and demand of rural land use function through rural land consolidation, so as to promote rural revitalization.

Constitutive model of polypropylene-fiber-fabric-reinforced concrete under uniaxial compression and index conversion of mechanical properties

Polypropylene fiber (PPF) is often added to improve the mechanical properties of concrete in engineering applications. As a material used extensively in the textile industry, a huge amount of discarded polypropylene fabrics (PPFF) are produced each year. This study used the waste PPFF as the research object to investigate the feasibility of replacing PPF as concrete admixture on the basis of the concept of green environmental protection. The mechanical properties of polypropylene fiber fabric-reinforced concrete (PPFFRC) with five different fabric contents of 0–1.5 kg/m3 under three different curing ages of 14–60 days were tested. Results show that the dosage of 0.9 kg/m3 PPFF is the best. Compared with the polypropylene fiber reinforced concrete with the same dosage at the age of 60 days, the compressive strength increased from 35.83 MPa to 42.83 MPa, the flexural strength increased from 5.99 MPa to 6.344 MPa, and the splitting strength decreased slightly from 2.70 MPa to 2.57 MPa. A uniaxial compression constitutive model of PPFFRC with different fabric contents at different curing ages was established on the basis of the uniaxial compression constitutive model of concrete proposed by Hogenestand and Zhenhai Guo. The correlation coefficient in the constitutive model was determined by using an improved differential evolution algorithm. The conversion relationships between compressive-flexural strength, compressive-splitting strength, and compressive strength-elastic modulus of PPFFRC were constructed. Results show that the waste PPFF has broad application prospect in green concrete and can replace PPF in concrete to some extent.

Investigating the Key Hindering Factors and Mechanism of BIM Applications Based on Social Network Analysis

China’s construction industry is an important driving force for the development of society. Nevertheless, with the recent new normal of economic development, traditional construction approaches cannot meet the requirements of socialist modernization and sustainable construction. As such, the development of the construction industry needs to match the recent developmental concept of green environmental protection. Therefore, China’s construction industry needs to explore innovative development paths of transformation and upgrading. Recently, the Chinese government has been vigorously promoting building information modeling (BIM) applications. However, in the real-world construction process, BIM applications have not achieved their expected impacts. To satisfy the practical demands, this research uses the social network analysis method to analyze the key hindering factors in order to clarify the significance and influencing mechanism of each factor. The current study identified 12 key hindering factors that impede the development of BIM applications in China’s construction industry. The results show that a lack of policy guidance and the restriction of relevant laws are the most critical hindering factors. This research contributes to the research of the hindering factors of BIM applications in China and can assist decision makers in formulating appropriate strategies to promote the application and development of information BIM technology in China’s construction industry.

Research on Green Environmental Protection Concept in Environmental Protection Engineering Design

Research on Green Environmental Protection Concept in Environmental Protection Engineering Design

Research on the Current Situation and Development Path of E-Commerce Industry from the Perspective of "New Plastic Restriction Order"

Under the "high-speed delivery" order, the "plastic delivery" industry has been further upgraded, resulting in a large number of problems in the "plastic delivery" industry. Based on the above two pain points and problems, through the special perspective of the "new plastic restriction order", taking Bengbu City as an example, this paper collates the data from three aspects: the understanding of residents at different ages of the "plastic restriction order", the use of plastics in the industry before and after the new plastic restriction order, and the impact of the "plastic restriction order" on takeout and couriers, More intuitive display of the impact of the "new plastic restriction order" on the express and takeout industries. Explore the development path of the express and takeout industry from the perspective of the "new plastic restriction order", actively practice the concept of green environmental protection, implement the "new plastic restriction order", promote the sustainable and healthy development of the e-commerce industry and optimize the green industrial structure.

Application Analysis of Green Environmental Protection Concept in Architectural Design

Application Analysis of Green Environmental Protection Concept in Architectural Design