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Agriculture
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Latest Research on Agricultural Waste Management
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Latest Research on Agricultural Waste Management

A special issue of Agriculture (ISSN 2077-0472). This special issue belongs to the section "Agricultural Technology".

Deadline for manuscript submissions: closed (10 February 2024) | Viewed by 8290

Special Issue Editor

Dr. Ademola Ajayi-Banji

E-Mail Website
Guest Editor
Department of Agricultural and Biosystems Engineering, North Dakota State University, Fargo, ND 6050, USA
Interests: waste utilization; emission abatement; biochar; anaerobic digestion; LCA; kinetic modeling; precision manure-nutrient management

Special Issue Information

Dear Colleagues,

With the recent focus on the circular economy, waste management has received much attention, leading to improved management technologies, strategies, procedures, and policies. Nonetheless, the complexity of waste means that management and policy decisions depend on the waste type, the composition of precursor substrate, available technology, and environmental impact. Thus, we seek new findings through cutting-edge research that have contributed effectively to turning solid and liquid wastes into value-added products. This also includes quantifying and harnessing special wastes (e.g., medical), including innovative waste recovery, recycling, and reuse approaches. This Special Issue will focus on solid and liquid waste management technologies, cost and environmental impact assessment, adapting precision agriculture in waste management and application, and related policy formulation.

Dr. Ademola Ajayi-Banji
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Agriculture is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • waste valorization
  • impact assessment
  • characterization
  • treatment
  • management policy
  • reuse
  • recycling
  • recovery and value-added product

Published Papers (3 papers)

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Research

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15 pages, 506 KiB  
Article
Economic Incentives, Reputation Incentives, and Rural Residents’ Participation in Household Waste Classification: Evidence from Jiangsu, China
by Guang Han, Ping Zhai, Liqun Zhu and Kongqing Li
Agriculture 2023, 13(10), 1931; https://doi.org/10.3390/agriculture13101931 - 02 Oct 2023
Cited by 1 | Viewed by 1086
Abstract
With the economic development and rising living standards in rural China, the amount of household waste generated continues to increase, causing serious pollution to the environment and risks to public health. Promoting the classification of rural household waste is a critical way to [...] Read more.
With the economic development and rising living standards in rural China, the amount of household waste generated continues to increase, causing serious pollution to the environment and risks to public health. Promoting the classification of rural household waste is a critical way to improve the dwelling environment and control disease transmission in rural areas. Using the 2021 China Land Economic Survey (CLES) conducted in rural areas of Jiangsu province, China, this research explores how economic incentives and reputational incentives impact rural residents’ participation in household waste classification intention and behavior. The results show that most surveyed rural residents have the intention to classify their household waste, but only half of them perform the waste classification behavior. Furthermore, both economic incentives and reputation incentives have significant positive effects on rural residents’ intention and behavior regarding household waste classification, and there exists a complementary effect between them, which indicates that a combination of economic incentives and reputation incentives will increase the participation rate of rural residents in household waste classification. Finally, based on the findings, we put forward recommendations for rural waste management policies, including synergizing both economic incentives and reputation incentives, improving the mobilization system, and strengthening publicity and education on household waste classification. Full article
(This article belongs to the Special Issue Latest Research on Agricultural Waste Management)
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23 pages, 4493 KiB  
Article
Agricultural Wastewater Treatment Using Oil Palm Waste Activated Hydrochar for Reuse in Plant Irrigation: Synthesis, Characterization, and Process Optimization
by Ahmad Hussaini Jagaba, Faizah Mohammed Bashir, Ibrahim Mohammed Lawal, Abdullahi Kilaco Usman, Nura Shehu Aliyu Yaro, Abdullahi Haruna Birniwa, Haifa Youssef Hamdoun and Nahla M. Shannan
Agriculture 2023, 13(8), 1531; https://doi.org/10.3390/agriculture13081531 - 01 Aug 2023
Cited by 11 | Viewed by 1884
Abstract
The best possible use of natural resources and the large amounts of trash produced by industrial and human activity is necessary for sustainable development. Due to the threat of global climate change and other environmental challenges, waste management systems are changing, leading to [...] Read more.
The best possible use of natural resources and the large amounts of trash produced by industrial and human activity is necessary for sustainable development. Due to the threat of global climate change and other environmental challenges, waste management systems are changing, leading to more instances of water resource management. The waste generated must be controlled from a sustainability point of view. Typically, the conventional disposal of Agricultural Wastewater (AW) and biomass can be achieved by recycling, reusing, and converting them into a variety of green products. To improve the AW quality for the purposes of environmental sustainability, Sustainable Development Goals (SDGs) 6 and 14, dealing with clean water, sanitation, and life below water, are very important goals. Therefore, the present investigation evaluates the effectiveness of a Bench-scale Activated Sludge Reactor (BASR) system for AW treatment. The BASR was designed to focus on getting the maximum possible utilization out of a biosorbent derived from oil palm waste activated hydrochar (OPAH). This is in accordance with SDG 9, which targets inorganic and organic waste utilization for added value. An experiment was developed using the Response Surface Methodology (RSM). A Hydraulic Retention Time (HRT) of 1–3 days was used in the bioreactor’s setup and operation, and Mixed Liquor Suspended Solids (MLSS) concentrations of 4000–6000 mg/L were used. BASR was fed with AW with initial mean concentrations of 4486 ± 5.63 mg/L and 6649 ± 3.48 for the five-day Biochemical Oxygen Demand (BOD5) and Chemical Oxygen Demand (COD) experiments, respectively. The results obtained showed that maximum reductions of 84.66% and 72.07% were recorded for BOD5 and COD, respectively. Through RSM optimization, the greatest reductions in the amounts of organic materials were achieved with a 2-day HRT and an MLSS dosage of 5000 mg/L. Substrate elimination thresholds were assessed using the first-order, the Grau second-order, and the modified Stover–Kincannon models. The reported observations were found to be perfectly fit by the modified Stover–Kincannon model, with high R2 values of 0.9908 and 0.9931 for BOD5 and COD, respectively. As a result, the model may be used to design the BASR system and forecast how the reactor would behave. The findings from this study suggest that the developed OPAH has promising potential to be applied as eco-friendly material for the removal of BOD5 and COD from AW. Consequently, the study findings additionally possess the ability to address SDGs 6, 9, and 14, in order to fulfil the United Nations (UN) goals through 2030. Full article
(This article belongs to the Special Issue Latest Research on Agricultural Waste Management)
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Review

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34 pages, 1727 KiB  
Review
Advancements and Innovations in Harnessing Microbial Processes for Enhanced Biogas Production from Waste Materials
by Ankita Das, Sandeep Das, Nandita Das, Prisha Pandey, Birson Ingti, Vladimir Panchenko, Vadim Bolshev, Andrey Kovalev and Piyush Pandey
Agriculture 2023, 13(9), 1689; https://doi.org/10.3390/agriculture13091689 - 27 Aug 2023
Cited by 2 | Viewed by 4382
Abstract
Biogas production from waste materials has emerged as a promising avenue for sustainable energy generation, offering a dual benefit of waste management and renewable energy production. The selection and preparation of waste feedstocks, including agricultural residues, food waste, animal manure, and municipal solid [...] Read more.
Biogas production from waste materials has emerged as a promising avenue for sustainable energy generation, offering a dual benefit of waste management and renewable energy production. The selection and preparation of waste feedstocks, including agricultural residues, food waste, animal manure, and municipal solid wastes, are important for this process, while the microbial communities are majorly responsible for bioconversions. This review explores the role of complex microbial communities and their functions responsible for the anaerobic digestion of wastes. It covers the crucial physiological processes including hydrolysis, acidogenesis, acetogenesis, and methanogenesis, elucidating the microbial activities and metabolic pathways involved in the prospects of improving the efficiency of biogas production. This article further discusses the influence of recent progress in molecular techniques, including genomics, metagenomics, meta-transcriptomics, and stable isotope probing. These advancements have greatly improved our understanding of microbial communities and their capabilities of biogas production from waste materials. The integration of these techniques with process monitoring and control strategies has been elaborated to offer possibilities for optimizing biogas production and ensuring process stability. Microbial additives, co-digestion of diverse feedstocks, and process optimization through microbial community engineering have been discussed as effective approaches to enhance the efficiency of biogas production. This review also outlines the emerging trends and future prospects in microbial-based biogas production, including the utilization of synthetic biology tools for engineering novel microbial strains and consortia, harnessing microbiomes from extreme environments, and integrating biogas production with other biotechnological processes. While there are several reviews regarding the technical aspects of biogas production, this article stands out by offering up-to-date insights and recommendations for leveraging the potential of microbial communities, and their physiological roles for efficient biogas production. These insights emphasize the pivotal role of microbes in enhancing biogas production, ultimately contributing to the advancement of a sustainable and carbon-neutral future. Full article
(This article belongs to the Special Issue Latest Research on Agricultural Waste Management)
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