Utilization Of Organic Wastes Research Articles

A novel strategy for urban and rural organic waste utilization with outstanding integrated benefits: based on study in China's Taihu Lake region

Typical organic waste in urban and rural regions (TWUR) is big in volume and poor in resource utilization, and there is currently a lack of integrated evaluation studies on the optimal pattern of TWUR resource utilization. Based on a representative case study of China's circum-Taihu Lake region, this study integrated material flow, life cycle assessment and comprehensive evaluation methods to explore the optimal scenario pattern for TWUR disposal and utilization under multi-scenario settings from multiple perspectives, including cost-benefit-technology-resource depletion. The synergistic coupled aerobic fermentation scenario in Scenario S2, which has a high level of technological maturity and can maximize nutrient recycling while minimizing environmental impacts, is the optimal scenario for using TWUR, according to the results of the entropy weight-TOPSIS integrated evaluation. Following the implementation of Scenario S2, 20% of the chemical fertilizers utilized in the study region will be substituted with organic fertilizers, resulting in a $16.19 billion reduction in organic waste disposal expenses and $228.64 billion in economic benefits. Additionally, China's carbon emissions will drop by 94.316 million tons as a result. This study validates that the optimal configuration pathway to achieve TWUR resource usage is synergistic coupled aerobic fermentation, in contrast to the majority of prior studies. In addition to being a valuable reference for TWUR's resource use transition and future market planning, this environmental technology analysis will help China in achieving its carbon emission reduction targets.

Pengolahan Limbah Organik Pasar Sayur Kota Metro Sebagai Media Kultur Maggot Hermetia Illucens Melalui Pot Biokonversi Bagi Peternak Ayam Skala UMKM

This activity aims to explore the effectiveness of applying organic waste from the Vegetable Market in Metro City as a medium for Hermetia Illucens maggot culture, as well as to determine the ecological and economic impacts of the activity on small-scale poultry farmers in Metro City. The community service was conducted using the Asset Based Community Development (ABCD) method. Several points were obtained from the conducted community service: first, the discovery and dream phase involved educating and socializing the potential of organic waste as a maggot cultivation asset, as well as formulating the desired targets. Second, the design and define phase aimed to formulate program activities to achieve the targets, including determining the timing, location, and necessary equipment. Third, the destiny phase included the implementation of the community service, which involved education and practical activities such as hatching maggot eggs, making larva maggot breeding boxes, sorting and fermenting organic waste, and constructing a production house. Based on the monitoring conducted, challenges were found in the form of predator attacks such as rats, chickens, and green flies on the maggot egg hatching containers. Evaluation was carried out by creating special containers equipped with lamp lighting and using netting as covers for the containers. Challenges were also found in the aspect of maggot growth, where the utilization of organic waste from the Metro City vegetable market was not sufficient to maximize growth. Therefore, evaluation was conducted by mixing organic waste from the Metro City vegetable market with household waste generated by each partner of the community service. Education and mentoring in the management of organic waste from the Metro City vegetable market have impacted the community's perspective on viewing organic waste as a valuable asset and their skills in managing waste as a medium for maggot cultivation.

Utilization of Organic Wastes into Fertilizer

Utilization of Organic Wastes into Fertilizer

Gaining insight into the effect of laccase expression on humic substance formation during lignocellulosic biomass composting

The aim is to enhance lignin humification by promoting laccase activities which can promote lignin depolymerization and reaggregation during composting. 1-Hydroxybenzotriazole (HBT) is employed to conduct laccase mediator system (LMS), application of oxidized graphene (GO) in combination to strengthen LMS. Compared with control, the addition of GO, HBT, and GH (GO coupled with HBT) significantly improved laccase expression and activities (P < 0.05), with lignin humification efficiency also increased by 68.6 %, 36.7 %, and 107.8 %. GH treatment induces microbial expression of laccase by increasing the abundance and synergy of core microbes. The unsupervised learning model, vector autoregressive model and Mantel test function were combined to elucidate the mechanism of action of exogenous materials. The results showed that GO stabilized the composting environment on the one hand, and acted as a support vector to stabilize the LMS and promote the function of laccase on the other. In GH treatment, degradation of macromolecules and humification of small molecules were promoted simultaneously by activating the dual function of laccase. Additionally, it also reveals the GH enhances the humification of lignocellulosic compost by converting phenolic pollutants into aggregates. These findings provide a new way to enhance the dual function of laccase and promote lignin humification during composting. It could effectively achieve the resource utilization of organic solid waste and reduce composting pollution.

Transforming trash: strategies to develop waste into a feedstock for a circular bioeconomy

AbstractOrganic by‐product and waste streams generated from agriculture and food production are important future feedstocks for manufacturing chemicals, polymers, and other materials in a circular bioeconomy. These waste streams are currently underutilized and under‐explored in the context of biomanufacturing though much funding and infrastructure have been made available for their use in energy generation. The natural ability of microorganisms to utilize compounds in organic wastes, coupled with advances in engineering biology that enable scientists to manipulate biological systems to produce chemicals, polymers, and materials, and improve upon those processes, present a promising technological approach to the utilization of these waste streams as feedstocks. However, the characteristics of waste streams make them challenging to incorporate into biomanufacturing processes. These challenges can be addressed with additional advances in engineering biology research and thoughtful approaches to process development. Research and process development around the use of existing, localized waste streams present distinct benefits and raise interesting considerations, and are important undertakings. These activities will be as complex as the waste streams targeted; as such, coordination of efforts across relevant agencies and organizations, and collaborations between researchers, waste generators, customers, and other stakeholders will be critical to their success. To make meaningful and rapid contributions towards utilization of organic wastes as biomanufacturing feedstocks we recommend: (1) The National Institute of Food and Agriculture (NIFA) at the US Department of Agriculture should incorporate into existing programs the development of organic waste conversion into chemicals, polymers, and other materials using engineering biology and, if possible, establish new programs focused on this area; and (2) NIFA should oversee, coordinate, and publicize collaborative efforts that include federal agencies, state and regional agricultural research centers and cooperatives, and program‐related infrastructure.

Utilization of solid organic waste as a biofertilizer formulation for upland rice plants supports sustainable rice farming

The use of local isolates as biofertilizer and organic fertilizer based on organic waste is carried out as an environmentally friendly cultivation effort towards sustainable agriculture. This research aims to obtain a biofertilizer formulation made from solid organic waste to support sustainable upland rice farming. The treatments used were: F0: without biofertilizer formulation, F1: 75% tofu dregs + 100 ml cellulolytic bacterial consortium, F2: 75% rice straw + 100 ml cellulolytic bacterial consortium, F3: 75% solids + 100 ml cellulolytic bacterial consortium, F4: 75% peat + 100 ml cellulolytic bacterial consortium, F5: 75% rice husk + 100 ml cellulolytic bacterial consortium. The formulation of organic waste-based biofertilizer with a consortium in this research showed that did not have an effect on the growth of upland rice plants, but the provision of 75% tofu dregs + 100 ml cellulolytic bacteria consortium tended to provide better plant height growth in terms of rice plant height parameters.

A Short Review on the Growth of Lightweight Agronomic Surplus Biomass Composites for Ecological Applications Using Biopolymers

The need to discover novel methods for creating sustainable materials is growing due to the depletion of the Earth's resources and increasing environmental concerns. Several studies have focused on the handling of agricultural waste in an attempt to mitigate the ecological issues associated with agricultural debris removal. Large volumes of agricultural waste are generated annually, posing a significant challenge from both ecological and financial perspectives. In alignment with the principles of a sustainable economy, such waste can be employed as supplementary ingredients to produce high-value goods. The utilization of organic waste from agriculture has become indispensable for the development of sustainable and lightweight biopolymer-based composites. This brief review delves into the expanding field of lightweight agronomic surplus biomass materials suitable for environmental applications. It places particular emphasis on the utilization of biopolymers in creating these materials. The study explores how agricultural waste biomass can be sustainably repurposed and transformed into eco-friendly composite materials. It examines the innovations, materials, and methods contributing to this ecological trend, with a focus on the potential environmental benefits. This review highlights the progress achieved in the development of these hybrids, drawing attention to the numerous ways in which environmentally friendly biopolymer-based materials can be utilized.

Sustainable Utilization of Humic Substances and Organic Waste in Green Agriculture

Organic wastes (OW) comprise biodegradable plant, animal, and industrial and municipal waste; billions of tons are generated annually worldwide, and they are continuously produced as a result of prosperity, the increase in population, and the escalation of anthropogenic activities [...]

Research progress and perspectives of biogas production from municipal organic solid waste

Abstract Anaerobic digestion is a prevailing technology for the treatment and utilization of municipal organic solid waste (MOSW). In this technology, the macromolecular organic matter in waste degrades into small molecular substances through the anaerobic decomposition of microorganisms, producing biogas that can provide enormous energy. This paper focuses on the research progress of anaerobic digestion of various organic wastes for biogas production. The principle and process of anaerobic digestion for biogas production are introduced, along with the key factors affecting anaerobic digestion efficiency, such as temperature, pH, and sealing conditions. At the same time, the current cycle treatment technology and comprehensive treatment system of MOSW are also summarized. Furthermore, the paper explores biogas purification technologies, including desulfurization, deoxidation, drying, and decarbonization. Finally, the state-of-the-art of the utilization of MOSW for biogas production in the world and the problems faced by the utilization of MOSW for biogas production in China are reviewed. By summarizing the anaerobic digestion technology of MOSW, this review hopes to provide some reasonable solutions for the high-value utilization of MOSW.

Arbuscular mycorrhizal fungi, phosphorus and organic residues in Peltophorum dubium (Spreng.) Taub. seedlings.

Studies have underscored a growingdemand for innovative practices in the cultivation of seedlings from forest species, with a notable emphasis on the utilization of organic waste, inoculation with arbuscular mycorrhizal fungi (AMF), and phosphate fertilization. This study aimed to evaluate the impact of organic residues, inoculation with AMF, and phosphorus on the growth and quality of Peltophorum dubium (Spreng.) Taub. seedlings. Two independent experiments were conducted. In Experiment I, treatments included inoculation with various AMF species: control (without inoculation), Clareoideoglomus etunicatum, Rhizophagus heterosporum, Rhizophagus clarum, and MIX (a combination of the three AMF species), all in conjunction with varying doses of phosphorus (0, 60, 120, 180, and 240 mg kg-1 soil). In Experiment II, treatments comprised a control group (without AMF) and inoculation with Glomus clarum, Gigaspora margarita, Gigaspora albida, Clareoideoglomus etunicatum, and MIX (a combination of the four AMF species), each associated with four substrates: S1) soil + coarse sand - SCS, S2) SCS + poultry manure, S3) SCS + cattle manure, and S4) SCS + sheep manure. Peltophorum dubium seedlings exhibited heightened growth with the inoculation of R. heterosporum, R. clarum, and MIX. Positive responses were observed in seedlings when exposed to organic residues, particularly sheep manure, resulting in increased biomass production and enhanced Dickson quality index. The AMF inoculation, specifically with R. heterosporum, R. clarum, and MIX, provided optimal growth conditions for P. dubium seedlings. Remarkably, the utilization of organic residues, notably substrates with chicken manure and cattle manure, exerted substantial positive effects on both growth and quality of P. dubium seedlings.

Economy Circular Pengelolaan Sampah Organik Pasar di Peternakan Sapi dari Hulu hingga Hilir (Studi Kasus di Kelompok Tani Sumber Makmur, Gunung Tembak Kota Balikpapan)

Management of market organic waste in Balikpapan City is an important thing to do to reduce the burden on Manggar TPA. Organic waste, especially market organic waste, which continues to increase along with the rapid growth of the population in Balikpapan City as a buffer city for the IKN can increase the risk of environmental pollution and safety. Market organic waste can be used as an alternative feed for cattle and goats and this has been done by the Sumber Makmur Farmer Group, Gunung Tembak, Balikpapan City. In addition to utilizing market organic waste as cattle and goat feed, the Sumber Makmur Farmer Group has also managed cow manure in the form of solid and liquid into solid organic fertilizer and liquid organic fertilizer. Thus there has been a series of Economy circular which can be an alternative in overcoming the problem of market organic waste in the Balikpapan city as well as increasing economic value. The method in this study uses a descriptive-qualitative method with a design action research model or action research by observing directly to obtain information from the object of study. Discussion of this research is divided into 4 parts such us System for Utilizing Market Organic Waste as Cattle and Goat Feed, the system for utilizing solid cow manure, the system for utilizing liquid cow manure, the potential for managing cattle and goat farms based on an economy circular. The results of observations at the Sumber Makmur Farmer Group, Gunung Tembak, Balikpapan City, show that there have been livestock management activities that apply an economy circular from upstream to downstream. Furthermore, it is hoped that further and in-depth research can be carried out in terms of economy circular-based livestock management in the utilization of organic waste as animal feed so that it can provide more comprehensive information to the wider community so that they can implement this system.&#x0D; &#x0D; Keyword: market organic waste, farming, animal feed, economic circular, manure

Modeling Analysis and Research on the Evaporation System of a Multisource Organic Solid Waste Incinerator

The co-incineration of multisource organic solid waste has gradually become an important method for solid waste recycling. Through a combination of computational fluid dynamics simulation and field monitoring, a distributed parameter model of the evaporative heating surface of an incinerator was developed. The distributions of heat flux, wall temperature, and steam quality in the incinerator were analyzed under four combustion conditions involving solid waste from various sources, types, and proportions. The results revealed that under the two working conditions with 20% waste cloth, as the calorific value of the mixed fuel increased, both the peak heat flux and the peak wall temperature increased, and the nonuniformity of heat transfer within the furnace intensified. Under the influence of the composition and calorific value of the mixed fuel, the steam quality of the working fluid at the outlet of the rear water wall in the cases with 20% waste cloth was significantly higher than that in the case of pure municipal solid waste combustion and the case with 20% sludge. This study offers valuable insights into the resource utilization of multisource organic solid waste in co-incinerators.

Utilization of Organic Waste in a Direct Carbon Fuel Cell for Sustainable Electricity Generation

There is much organic waste that comes from by-products of agriculture and product processing, solid waste from livestock, and municipal waste. Conventional methods that are widely used for the treatment and management of organic fractions of waste are landfilling, composting, anaerobic digestion, incineration, gasification, and pyrolysis. Among the above methods, pyrolysis is a relatively simple, robust, and scalable technology for transforming diverse organic waste feedstock into renewable energy products. Recently, the electrochemical conversion of biochar into electricity in direct carbon fuel cells (DCFC) has also been investigated and shown to be feasible and highly efficient. This paper focuses on the utilization of organic waste as a fuel and the investigation of their characteristics during electrochemical reactions in molten hydroxide direct carbon fuel cells (MH-DCFCs). Organic waste of different origins (the food-processing industry, urban and suburban areas, municipal solid organic waste, sewage sludge) with diversified characteristics was used as the main feedstock. The lowest power density was determined for sewage sludge (5.1 mW cm−2), and the best results were obtained for peanut shells (53.14 mW cm−2). This study concludes that higher elemental carbon, lower ash content and the presence of reactive surface oxygen functional groups in biochar obtained from organic waste might contribute to better cell performance. Moreover, the research establishes the potential of carbonized organic waste as a prospective alternative fuel source for power generation in an MH-DCFC.

Utilization of household waste to support the integrated sustainable food house area in Kalirejo Village

The community in Kalirejo Village is still not fully optimizing the utilization of household waste, both inorganic and organic waste, which can support the success of the Sustainable Food Home Area (KRPL) program. This program aims to enhance understanding, abilities, and good practices in waste utilization within households. The program is implemented through several stages, including training, mentoring, socialization, and monitoring. The results show that people have gained an understanding of basic techniques for simple hydroponic cultivation using a wick system. Furthermore, individuals are capable of producing Bokashi fertilizer from organic waste and are knowledgeable about the methods for creating pokak drinks using onion skin waste, along with understanding the associated health benefits.

Special Issue on “Biomass Conversion and Organic Waste Utilization”

The recycling and utilization of biomass and organic wastes have emerged as effective strategies for saving energy and resources [...]

Nonsterilized Fermentation of Crude Glycerol for Polyhydroxybutyrate Production by Metabolically Engineered Vibrio natriegens.

Polyhydroxybutyrate (PHB) is an attractive biodegradable polymer that can be produced through the microbial fermentation of organic wastes or wastewater. However, its mass production has been restricted by the poor utilization of organic wastes due to the presence of inhibitory substances, slow microbial growth, and high energy input required for feedstock sterilization. Here, Vibrio natriegens, a fast-growing bacterium with a broad substrate spectrum and high tolerance to salt and toxic substances, was genetically engineered to enable efficient PHB production from nonsterilized fermentation of organic wastes. The key genes encoding the PHB biosynthesis pathway of V. natriegens were identified through base editing and overexpressed. The metabolically engineered strain showed 166-fold higher PHB content (34.95 wt %) than the wide type when using glycerol as a substrate. Enhanced PHB production was also achieved when other sugars were used as feedstock. Importantly, it outperformed the engineered Escherichia coli MG1655 in PHB productivity (0.053 g/L/h) and tolerance to toxic substances in crude glycerol, without obvious activity decline under nonsterilized fermentation conditions. Our work demonstrates the great potential of engineered V. natriegens for low-cost PHB bioproduction and lays a foundation for exploiting this strain as a next-generation model chassis microorganism in synthetic biology.

Co-pyrolytic interactions and products of brominated epoxy resin and polyethylene terephthalate: TG-FTIR analysis and machine learning prediction

Pyrolysis is an effective approach for organic waste utilization, and the co-pyrolysis of multiple materials holds potential for both environmental and economic benefits. Brominated epoxy resin (BER) and polyethylene terephthalate (PET) are widely used organic materials in modern society, and the productions of their corresponding wastes are increasing annually. However, limited research has been conducted on the co-pyrolysis of BER and PET. In this study, mixtures of BER and PET were prepared in various proportions, and thermogravimetry (TG) and thermogravimetry-Fourier transform infrared spectroscopy (TG-FTIR) analyses were employed to investigate the reaction characteristics, volatile product compositions, and evolution during co-pyrolysis. Synergistic effects were observed at lower temperatures in the major reaction stage for mixtures with PET content below 40%, while inhibitory effects were noted at higher temperatures. For mixtures with PET content over 40%, the antagonistic effect was more prominent. The main volatile products during co-pyrolysis were identified as CO2, benzoic acid, and alcohols, and their evolutions exhibited complex changes due to interactions. In addition, machine learning algorithms successfully predicted real-time volatile emissions, with the random forest model proving accurate. This study enhanced understanding of organics interactions during thermal treatment and would contribute to the reduction of environmental pollution.

Технология утилизации органических отходов

Every year, more and more attention is paid to the problems associated with environmental pollution. Among the many harmful substances that enter the environment, organic waste is the main one. In small volumes, they do not pose a great danger to humans, but a constant increase in their number leads to a violation of the natural cycle. Organic waste is the main cause of unpleasant odors at landfills and landfills, their decomposition in anaerobic conditions leads to producing methane, which is a flammable gas. This can lead to the fires at landfills of organic waste, including chlorine-containing ones, which is dangerous to humans. There has been given a hierarchical approach to organizing the organic waste disposal. A technological system for the utilization of organic waste with producing the valuable secondary resources has been proposed.

Microalgal upgrading of the fermentative biohydrogen produced from Bacillus coagulans via non-pretreated plant biomass

BackgroundHydrogen is a promising source of alternative energy. Fermentative production is more feasible because of its high hydrogen generation rate, simple operating conditions, and utilization of various organic wastes as substrates. The most significant constraint for biohydrogen production is supplying it at a low cost with fewer impurities.ResultsLeaf biomass of Calotropis procera was used as a feedstock for a dark fermentative production of hydrogen by Bacillus coagulans AH1 (MN923076). The optimum operation conditions for biohydrogen production were 5.0% substrate concentrationand pH 9.0, at 35 °C. In which the biohydrogen yield was 3.231 mmol H2/g dry biomass without any pretreatments of the biomass. A freshwater microalga Oscillatroia sp was used for upgrading of the produced biohydrogen. It sequestrated 97 and 99% % of CO2 from the gas mixture when it was cultivated in BG11 and BG11-N media, respectively After upgrading process, the residual microalgal cells exhibited 0.21mg/mL of biomass yield,high content of chlorophyll-a (4.8 µg/mL) and carotenoid (11.1 µg/mL). In addition to Oscillatroia sp residual biomass showed a lipid yield (7.5–8.7%) on the tested media.ConclusionBacillus coagulans AH1 is a promising tool for biohydrogen production avoiding the drawbacks of biomass pretreatment. Oscillatroia sp is encouraged as a potent tool for upgrading and purification of biohydrogen. These findings led to the development of a multiproduct biorefinery with zero waste that is more economically sustainable.Graphical

Identify the potential driving mechanism of reconstructed bacterial community in reduce CO2 emissions and promote humus formation during cow manure composting

The mineralization of organic components releases CO2 during composting, which not only leads to the loss of organic carbon, but has a direct negative impact on the environment. Malonic acid as a competitive inhibitor of succinate dehydrogenase could affect the tricarboxylic acid (TCA) cycle and reduce CO2 emissions. However, the bacterial interaction and organic component transformation has less known how to malonic acid reduce CO2 and improve of humus synthesis in complex composting. The aim of this study was to investigated the malonic acid on organic carbon sequestration and transforming cow manure waste into products with high humus content. Humus content was elevated by 16.8% and cumulative CO2 emissions (30 d)d reduced by 13.6% after malonic acid addition compared to the CK. SparCC analysis of bacterial interaction presented that the network complexity and stability was more higher with malonic acid addition, while a greater concentration of keystones and their ecological metabolic functions was observed, suggesting they weaken the influence of TCA cycle inhibition by enhancing interactions. PICRUSt predictions indicate that malonic acid might enhance humus content by promoting the synthesis of polyphenols and polymerization with amino acids. This study investigated the potential mechanism of regulators to enhance quality and reduce emissions during humification process, providing a new strategy for the resource utilization of organic solid waste.