Effect of biochar on reactor performance and methane generation during the anaerobic digestion of food waste treatment at long-run operations

Giwa, Abdulmoseen Segun; Xu, Haipeng; Chang, Fengmin; Wu, Juanjuan; Li, Yuhuan; Ali, Nasir; Ding, Shimin; Wang, Kaijun

doi:10.1016/j.jece.2019.103067

Cited by 99 publications

(36 citation statements)

References 44 publications

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“…Pyrolysis products can produce heat and power, both individually and simultaneously . Char obtained from pyrolysis of ROR has multiple applications, such as for soil improvement, carbon sequestration, and as an adsorbent precursor . The precise distribution of products depends mainly on many various pyrolysis factors such as heating rate, temperature, operating pressure, residence times of the vapors, and the converting biomass/residues and their states of mixing.…”

Section: Challenges For Treatment and Disposal Of Recalcitrant Organimentioning

confidence: 99%

“…Integration of AD and pyrolysis offers further potentially synergistic combinations which include use of digestate as feedstock for pyrolysis, syngas bio‐methanation, or use of chars as an additive in AD to overcome inhibition problems . Besides, for instance, the digestate from AD could be a suitable feedstock for pyrolysis to enhance biochar production, while the remaining char in the digestate could serve as a soil conditioner if the digestate is utilized as composted …”

Section: Pyrolysis Coupled Ad Considerationsmentioning

confidence: 99%

“…FW is the largest component of municipal solid waste (MSW); China MSW accounted for about 50% FW with 245 000 tons per day of FW generated . FW production in China as at 2017 reached 97.72 million tons, and conventional techniques for the treatment of FW are no longer considered viable due to the environmental challenges, high moisture content, low calorific value, perishability, and the need for sustainable recovery . Among several traditional methods such as landfilling and incineration, anaerobic digestion (AD) has been considered to be much sustainable and economical for resource recovery .…”

Section: Introductionmentioning

confidence: 99%

“…Recent studies have shown that introducing of biochar as additives in AD can enhance the formation of the biofilm and improve the output of bio‐methane to 5%‐31% . Besides, second‐stage pyrolysis decomposition of the ROR and subsequent oil/tar to syngas can find a route of utilization in AD, thus avoiding direct usage of oil/tar that can pose as toxicants to AD microbes.…”

Section: Introductionmentioning

confidence: 99%

“…It addresses high syngas for bio‐methanation from the oil in a second‐stage pyrolysis reactor as an alternative route to avert direct application in the AD. The utilization of biochar as additives in FW treatment and alleviation of microbial stress in a bioprocess is practicable . Studies on this combined technique are still rare; however, few reviews on the integrated technologies were highlighted.…”

Section: Introductionmentioning

confidence: 99%

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Pyrolysis coupled anaerobic digestion process for food waste and recalcitrant residues: Fundamentals, challenges, and considerations

Giwa

Chang

et al. 2019

Energy Science & Engineering

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Food waste (FW) is a severe environmental problem all over the world, and the recalcitrant organic residues (ROR) from FW treatment plant operations are also a critical environmental issue due to unsustainable treatment and disposal techniques.Requirements for FW and ROR complete exploitation with the establishment of recycling-renewable technologies are very crucial. This paper review AD and pyrolysis as two promising technologies to degrade FW and its residues, creating numerous renewable bioenergy yields with value-added. Existing oil/tar application methods in the AD suffered from various problems such as microorganism toxicity and limited productivity. Future upgrading techniques considering the second-stage pyrolysis process to decompose oil/tars for syngas with high hydrogen content and enhanced bio-methanation in the AD were addressed. Simultaneous pyrolysis by-product recycle in the AD during the valorization of FW are aimed to have the features of sustainability toward increased bioenergy production, reactor efficiency, and agricultural application. K E Y W O R D Sanaerobic digestion, coupling, food waste, pyrolysis, recalcitrant organic residues | 2251 GIWA et Al.

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Section: Challenges For Treatment and Disposal Of Recalcitrant Organimentioning

confidence: 99%

Section: Pyrolysis Coupled Ad Considerationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Pyrolysis coupled anaerobic digestion process for food waste and recalcitrant residues: Fundamentals, challenges, and considerations

Giwa

Chang

et al. 2019

Energy Science & Engineering

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Fermatean fuzzy Heronian mean operators and MEREC‐based additive ratio assessment method: An application to food waste treatment technology selection

Rani¹,

Mishra²,

Saha

et al. 2021

Int J of Intelligent Sys

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Uncertainty is often occurred in real-life decision-making problems due to the lack of complete information, imprecise data, and the vagueness of decision making experts in qualitative judgment, thus, the crisp values of criteria may be insufficient to handle such types of complex real situations. As the extension of fuzzy set, intuitionistic fuzzy set and Pythagorean fuzzy set, the Fermatean Fuzzy Set (FFS) has been demonstrated as a powerful tool to handle the uncertainty arisen in practical decision-making problems. Thus, this study aims to introduce an integrated Fermatean fuzzy information-based decision-making method by combining method based on

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Enhanced methane production from protein and lipid‐rich wastewater using powdered oat husk‐biochar

Pagés‐Díaz,

Vidal,

Huiliñir

et al. 2024

J of Chemical Tech & Biotech

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BACKGROUNDDue to the lower degradation and the potential inhibitory compounds present in slaughterhouse wastewater (SW), its industrial applications are often limited to methane production. This study investigated the combined effect of conductive material such as oat husk‐biochar at different concentrations (0, 5, 10, 15, 20, 25 g L−1) and particle sizes (i.e., Powder Biochar (PB) (0.05–0.08 mm) vs. Granular Biochar (GB) (0.8–1.0 mm)) in the methane production, biodegradability, kinetic parameters, methanogenic activity and digestate quality of SW, using a multilevel factorial design.RESULTSExperimental results showed that lower concentration (5, 10 g L−1) increased the methane yield up to 35% for PB and between 11 and 13% for GB compared to the control reactor. The total ammoniacal nitrogen concentrations in the digestate declined between 14% and 52% for all biochar dosages and particle sizes. PB improved the specific methanogenic activity of the biomass compared with GB, indicating that PB can support a well‐balanced methanogenic community compared with GB inside the digester. The multiple response optimization process computed that 7.5 g L−1 of PB is optimal to increase the methane yield, the COD degradation efficiency and shorten the lag phase. On the other hand, doses higher than 15 g L−1 hinder methane generation.CONCLUSIONSPB supplementation has significant potential to improve the anaerobic degradation of SW. The improvement is attributed to the higher specific surface area, contributing to better support and microbial activity. © 2024 Society of Chemical Industry (SCI).

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Effect of biochar on reactor performance and methane generation during the anaerobic digestion of food waste treatment at long-run operations

Cited by 99 publications

References 44 publications

Pyrolysis coupled anaerobic digestion process for food waste and recalcitrant residues: Fundamentals, challenges, and considerations

Pyrolysis coupled anaerobic digestion process for food waste and recalcitrant residues: Fundamentals, challenges, and considerations

Fermatean fuzzy Heronian mean operators and MEREC‐based additive ratio assessment method: An application to food waste treatment technology selection

Enhanced methane production from protein and lipid‐rich wastewater using powdered oat husk‐biochar

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