To distinguish the primary characteristics of agro-waste biomass by the principal component analysis: An investigation in East China

Wang, Mimi; Cao, Weixing; Sun, Chen; Sun, Zixiang; Miao, Yang; Liu, Mengmeng; Zhang, Zhining; Xie, Yun Cheng; Wang, Xinxin; Hu, Shitao; Hu, Chenyang

doi:10.1016/j.wasman.2019.04.046

Cited by 14 publications

(4 citation statements)

References 39 publications

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“…The theoretical BMP u of co-AD from CM and RS, with a VS weight ratio of 1:1, was 471 mL CH 4 /g VS. According to previous reports, the BMP u of RS and CM are 486-506 mL/g VS and 491-592 mL/g VS, respectively [23]. The actual BMP o of RS and CM are approximately 51-300 mL/g VS and 127-329 mL/g VS, respectively [14][15][16].…”

Section: The Anaerobic Digestion Performance Of Mono-and Co-feedstocksmentioning

confidence: 89%

A Novel Batched Four-Stage–Two-Phase Anaerobic Digestion System to Facilitate Methane Production from Rice Straw and Cow Manure with Low Inoculum/Substrate Ratios

et al. 2023

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In order to improve the performance of methane production from agro-waste, a batched four-stage–two-phase anaerobic digestion (4S2P-AD) system was designed to combine the advantages of both anaerobic co-digestion (co-AD) and two-phase AD. The initial separation of two phases was performed using rice straw (RS) as a feedstock in acidogenic phase and cow manure (CM) in methanogenic phase at low inoculum/substrate (I/S) ratios of 0.5 and 0.2 and a high organic loading of 60 g volatile solid (VS)/L. The periodic round-trip reflux of leachate during the 4S2P-AD process facilitated re-inoculation throughout the four stages. The results showed that this round-trip reflux also dispersed toxic ammonia, balanced the carbon/nitrogen ratio, unified the microbial community structure, and led to the selection of Methanosarcina (relative abundance > 80%) as the dominant methanogens. With the abilities to overcome volatile fatty acid accumulation, shorten lag times, improve biodegradability, and foster synergistic effects, it was verified that the 4S2P-AD process can maintain efficient and stable methanogenesis from high-solid lignocellulosic feedstock. The averaged methane production throughout the four stages of 4S2P-AD was 234 mL/g VS. This result is 96% higher than the averaged methane production obtained from the four one-step AD groups using mono-feedstock, and 91% higher than that obtained using co-feedstock. This study provides a scientific reference for the development of new processes of bio-methane production from agro-waste with a high fermentation capacity and stability in the future.

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Section: The Anaerobic Digestion Performance Of Mono-and Co-feedstocksmentioning

confidence: 89%

A Novel Batched Four-Stage–Two-Phase Anaerobic Digestion System to Facilitate Methane Production from Rice Straw and Cow Manure with Low Inoculum/Substrate Ratios

et al. 2023

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“…Several studies have been published on agro-wastes and their management, revolving around topics such as sustainable management of urban wastes, with publications from India [67], Italy [68], Oman [69], Tanzania [70], the European Union [71], the USA [72], and China [73][74][75]. Other studies have focused on producing microbial bio-flavor [76], sustainable management of agro-industrial wastes [77], management of olive leaf wastes to include production of biomass, animal feed, and pharmaceutical products [78], producing biomaterials derived from food wastes for the horticulture industry, like biodegradable nursery pots [79], and sustainable use of agro-industrial wastes to produce microbial pigments [80].…”

Section: Main Management Approachesmentioning

confidence: 99%

An Overview of Agro-Waste Management in Light of the Water-Energy-Waste Nexus

et al. 2022

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It is urgent that we increase global food production to support population growth. Food production requires significant resources, amongst them water and energy. Therefore, any losses of food or other agricultural products also means a waste of water and energy resources. A significant amount of these losses occurs during the postharvest stage, primarily during processing and storage. This is considered avoidable food waste. The water-energy-waste nexus (WEW), and its relationship to food production, needs to be investigated from a circular bioeconomy lens. Furthermore, alternative uses of the wastes should be investigated. This review focuses on agro-wastes and their management as sources for bioactive compounds, biofertilizers, biomaterials, nanomaterials, pharmaceuticals and medicinal agents, and growth media, e.g., for plant tissue culture. We also investigated the potential contribution of agro-wastes to bioenergy production (bioethanol, biogas, and biofuel). Proper management of agro-wastes may support the mitigation of climate change, produce innovative bio-ingredients and biodegradable materials, and enhance green growth and a circular bioeconomy. We argue that the management of agro-wastes cannot be discussed without referring to the role of water and energy within the food system. Thus, this review focuses on agricultural wastes and their handling, applications, environmental impacts, and potential benefits in the agricultural and medical industries in light of the WEW nexus.

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“…Sustainably using waste biomass resources to guarantee energy security, mitigate climate change, and satisfy the endless demand for chemicals and materials is a global commitment that can be achieved through waste valorization. Using a biorefinery approach and converting plant biomass to innovative chemical products, energy, and materials can replace the needs for oil, coal, natural gas, and other non-renewable energy and chemical sources [25,49,50].…”

Section: Uses Of Cacao Pod Wastementioning

confidence: 99%

Bio-Based Value Chains Potential in the Management of Cacao Pod Waste in Colombia, a Case Study

Meza-Sepúlveda

Castro²,

Zamora

et al. 2021

Agronomy

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Agriculture generates 11.4 billion tons of biomass worldwide, including residues from crop production and industrial processing. Improper disposal of agricultural residues results in environmental pollution and the waste of valuable biomass resources. Management of agricultural waste is particularly suboptimal in developing countries where low added-value traditional practices to manage the residues are commonplace. A bioeconomy approach to better manage agricultural waste is to use renewable biological resources from land and sea to produce new materials and energy, allowing the development of bio-based value chains (BBVC). This study explored the potential of BBVC in the management of cacao pod husk (CPH), the primary residual biomass generated from the production of cacao in Colombia. Thus, a literature review on cacao pod husk (CPH) management strategies and a survey for farmers from Caldas State in Colombia between August and November of 2020 were performed to identify the potentials and limitations of BBVC in the management of CPH. Assessment of CPH management strategies suggested variable uses for CPH categorized in energy, food, and miscellaneous. Analysis of surveys indicated farmers are keen to implement strategies to better manage their agricultural waste, but that information is not available to them. Finally, an approach to develop a BBVC from cacao was proposed, which we plan to implement as a future research direction. We expect to impact the economic growth positively in the region with bio-based products in the market.

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To distinguish the primary characteristics of agro-waste biomass by the principal component analysis: An investigation in East China

Cited by 14 publications

References 39 publications

A Novel Batched Four-Stage–Two-Phase Anaerobic Digestion System to Facilitate Methane Production from Rice Straw and Cow Manure with Low Inoculum/Substrate Ratios

A Novel Batched Four-Stage–Two-Phase Anaerobic Digestion System to Facilitate Methane Production from Rice Straw and Cow Manure with Low Inoculum/Substrate Ratios

An Overview of Agro-Waste Management in Light of the Water-Energy-Waste Nexus

Bio-Based Value Chains Potential in the Management of Cacao Pod Waste in Colombia, a Case Study

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