Agricultural Waste—Status and Future Prospects

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

Deadline for manuscript submissions: 25 July 2024 | Viewed by 955

Special Issue Editors


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R&D Process Engineer, NET Power, 320 Roney Street, Suite 200, Durham, NC 27701, USA
Interests: bioenergy; carbon-based catalysts; technoeconomic analysis; life cycle assessment; oxy-combustion; power generation; carbon capture and utilization; biomass gasification; hydrothermal liquefaction of biomass; biofuels production; Fischer–Tropsch synthesis
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Biobased Resources in the Bioeconomy (340b), Institute of Crop Science, University of Hohenheim, 70599 Stuttgart, Germany
Interests: agricultural production; agroecological intensification; biodiversity; bioeconomy; bioenergy; combustion; cropping systems; diversification; ecosystem services; perennial crops
Special Issues, Collections and Topics in MDPI journals

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Department of Plant Cultivation Technology and Commodity Science, University of Life Sciences in Lublin, 20-950 Lublin, Poland
Interests: waste utilization; bioenergy; agrophotovoltaics; agricultural biomass for biofuels; perennial energy crops; energy efficiency of crop production; legumes; intercropping; plant fertilization

Special Issue Information

Dear Colleagues,

Due to increasing environmental problems, agricultural businesses are facing increasing criticism as to how they can best deal sustainably with residual materials generated in crop and animal production in the future. While crop residues such as straw and husks largely remain on the field, residues from animal production such as slurry, solid manure, and slaughterhouse waste are used in the biogas process chain or numerous other utilization processes, and, in some cases, are also returned to agricultural production in the fields. Many of these nutrient cycles appear to be ready for the future. However, further utilization pathways are on the rise, including (i) the thermochemical conversion of plant residues to provide bioenergy or biochar, and (ii) the separation of residues from animal production into solid and liquid phases so that parts of the nutrient surpluses (e.g., phosphorus) can be countered with nutrient exports. In addition, many novel agricultural waste-related utilization pathways offer the opportunity for farm diversification, increased income, and improved rural development.

This Special Issue aims to shed light on the status and future prospects of agricultural waste by compiling the latest findings on the reduction, optimized use, and utilization of agricultural waste, as well as by identifying opportunities for a more holistic sustainability assessment of agricultural waste utilization webs. Value chains and value webs of bioenergy, as well as biobased products and product components, will be considered. This Special Issue welcomes research articles, review articles, short communications, etc.

We look forward to receiving your contributions.

Dr. Shima Masoumi
Dr. Moritz Von Cossel
Dr. Aleksandra Głowacka
Guest Editors

Manuscript Submission Information

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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.

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Keywords

  • agricultural waste
  • bioeconomy
  • biofuels
  • biogas production
  • carbon farming
  • ecosystem services
  • logistics
  • thermochemical conversion
  • catalysts
  • SLCA

Published Papers (1 paper)

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Research

15 pages, 2414 KiB  
Article
Cell Recycling Application in Single-Stage and Sequential-Stage Co-Production of Xylitol and Ethanol Using Corn Cob Hydrolysates
by Kritsadaporn Porninta, Chatchadaporn Mahakuntha, Julaluk Khemacheewakul, Charin Techapun, Yuthana Phimolsiripol, Pornchai Rachtanapun, Kittisak Jantanasakulwong, Juan Feng, Su Lwin Htike, Rojarej Nunta, Xinshu Zhuang, Wen Wang, Wei Qi, Zhongming Wang, Sumeth Sommanee and Noppol Leksawasdi
Agriculture 2024, 14(7), 1062; https://doi.org/10.3390/agriculture14071062 - 30 Jun 2024
Viewed by 331
Abstract
A sustainable bioeconomy in agricultural and agro-industrial production must inevitably involve the sustainable use of agricultural residues through zero-waste processes. Corn cob is considered crucial agricultural waste as 278 and 293 million tons were produced worldwide in 2022 and 2023, respectively. Corn cob [...] Read more.
A sustainable bioeconomy in agricultural and agro-industrial production must inevitably involve the sustainable use of agricultural residues through zero-waste processes. Corn cob is considered crucial agricultural waste as 278 and 293 million tons were produced worldwide in 2022 and 2023, respectively. Corn cob hydrolysates, which are abundant in xylose and glucose, could be efficiently utilized for xylitol and ethanol production through the cultivation of recycling the yeast strain Candida magnoliae TISTR 5664 in the single-stage and sequential-stage co-production of these products. The statistically significant maxima (p ≤ 0.05) ethanol concentrations were improved by 7.8% (49.9–51.7 g/L or 91.3–95.6% of the theoretical) from the single stage of ethanol production employing recycled cells and 9.9% (50.9–54.1 g/L or 77.3–83.9% of the theoretical) from the second step of sequential-stage co-production using recycled cells without xylitol accumulation. Conversely, the single-stage xylitol production utilizing recycled cells under microaerobic conditions resulted in a statistically significant lower (p ≤ 0.05) xylitol concentration by two folds relative to the control, while ethanol concentration was elevated by almost double. The statistically significant maximum (p ≤ 0.05) xylitol was achieved at 25.9 g/L (58.6% of the theoretical) when sequential-stage co-production was initiated in the first step with fresh inoculum only and not recycled cells. The sequential-stage co-production of xylitol and ethanol presented the potential for statistically significant improvement (p ≤ 0.05) of both xylitol and ethanol production processes. Full article
(This article belongs to the Special Issue Agricultural Waste—Status and Future Prospects)
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