RETRACTED: Pretreatment strategies for enhanced biogas production from lignocellulosic biomass

Abraham, Amith; Mathew, Anil Kuruvilla; Park, Hyo Jung; Choi, Okkyoung; Sindhu, Raveendran; Binod, Parameswaran; Pandey, Ashok; Park, Jung Han; Sang, Byoung In

doi:10.1016/j.biortech.2019.122725

Cited by 377 publications

(167 citation statements)

References 129 publications

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“…Furthermore, employment of pretreatment technologies not only paves way for higher organic loading capacity but also reduces hydraulic retention time during continuous anaerobic digestion processes. Consequently, volume, cost and footprint of the reactor decrease [5,[30][31][32]. The results obtained from the experimentation of this research work will aid in understanding the technical and economic viability during full-scale implementation.…”

Section: Discussionmentioning

confidence: 91%

“…It must be energy efficient as well as cost-effective. Therefore, optimum pretreatment methods and their conditions vary from substrate to substrate as well as with substrate composition and characteristics [14,[30][31][32]. For a specific substrate, the optimum pretreatment method and condition cannot be simply adopted or extrapolated on the basis of the literature or existing research works.…”

Section: Discussionmentioning

confidence: 99%

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Enhancement of biogas production from organic fraction of municipal solid waste using acid pretreatment

Dasgupta

Chandel

2020

SN Appl. Sci.

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Anaerobic digestion of organic fraction of municipal solid waste (OFMSW) is a potential and economic technique for harnessing bioenergy from Indian municipal solid waste. Pretreatment before anaerobic digestion has been known to improve biodegradability of substrate and enhance biogas production. In this study, the effectiveness of acid pretreatment in enhancing the hydrolysis of complex organic matter and ensuing biogas generation from OFMSW was studied using one strong and one weak acid. Acid pretreatment (pH 6-pH 1) of OFMSW was carried out using hydrochloric acid (HCl) and acetic acid (CH 3 COOH) for 24 h before batch anaerobic digestion assays with cow dung as inoculum. Increase in biogas yield ranged between 13.2 and 28.9% as compared to untreated OFMSW after pretreatment with HCl, whereas the same varied between 8.2 and 16% in case of CH 3 COOH pretreatment. The highest biogas yield (389.4 ml/gVS) with methane content of 68.3% was obtained after pretreatment with HCl at pH 3, whereas for CH 3 COOH, the highest yield (350.2 ml/gVS) with 67.4% methane was observed after pretreatment at pH 1. OFMSW characteristics after each pretreatment step and their variation during the course of anaerobic digestion were also studied. An economic evaluation of all pretreatment scenarios was performed; out of which, pretreatment of OFMSW with HCl at pH 4-pH 6 yielded positive results in terms of net revenue gains.

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Section: Discussionmentioning

confidence: 91%

Section: Discussionmentioning

confidence: 99%

Enhancement of biogas production from organic fraction of municipal solid waste using acid pretreatment

Dasgupta

Chandel

2020

SN Appl. Sci.

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“…The molecular structures, biochemical properties, and the mechanisms of action which make them useful candidates in biotechnological applications, such as pulp bio-bleaching, biosensors, food industries, textile industries, soil bioremediation and in the production of complex polymers in synthetic chemistry are also described (Dashtban et al, 2010). With anaerobic digestion of organic waste high in lignocellulose content, methane was synthesized by using laccase, hemicellulose, and cellulase enzymes (Luo et al, 2010;Abraham et al, 2020).…”

Section: Application Of New and Special Enzymesmentioning

confidence: 99%

An overview of biomass conversion: exploring new opportunities

Fülöp¹,

Ecker²

2020

PeerJ

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Recycling biomass is indispensable these days not only because fossil energy sources are gradually depleted, but also because pollution of the environment, caused by the increasing use of energy, must be reduced. This article intends to overview the results of plant biomass processing methods that are currently in use. Our aim was also to review published methods that are not currently in use. It is intended to explore the possibilities of new methods and enzymes to be used in biomass recycling. The results of this overview are perplexing in almost every area. Advances have been made in the pre-treatment of biomass and in the diversity and applications of the enzymes utilized. Based on molecular modeling, very little progress has been made in the modification of existing enzymes for altered function and adaptation for the environmental conditions during the processing of biomass. There are hardly any publications in which molecular modeling techniques are used to improve enzyme function and to adapt enzymes to various environmental conditions. Our view is that using modern computational, biochemical, and biotechnological methods would enable the purposeful design of enzymes that are more efficient and suitable for biomass processing.

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“…Research studies have been conducted on various physical, chemical, and biological methods that aim to reduce the inhibitory effects of ammonia and increase methane yield [11][12][13][14]. Such techniques include optimization of the C/N ratio or trace elements, pH or temperature control, high volume dilution of water, use of zeolite and biochar, and contact membrane technology [12,[15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Influence of Aerobic Pretreatment of Poultry Manure on the Biogas Production Process

et al. 2020

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Anaerobic digestion of poultry manure is a potentially-sustainable means of stabilizing this waste while generating biogas. However, technical, and environmental protection challenges remain, including high concentrations of ammonia, low C/N ratios, limited digestibility of bedding, and questions about transformation of nutrients during digestion. This study evaluated the effect of primary biological treatment of poultry manure on the biogas production process and reduction of ammonia emissions. Biogas yield from organic matter content in the aerobic pretreatment groups was 13.96% higher than that of the control group. Biogas production analysis showed that aerobic pretreatment of poultry manure has a positive effect on biogas composition; methane concentration increases by 6.94–7.97% after pretreatment. In comparison with the control group, NH3 emissions after aerobic pretreatment decreased from 3.37% (aerobic pretreatment without biological additives) to 33.89% (aerobic pretreatment with biological additives), depending on treatment method.

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RETRACTED: Pretreatment strategies for enhanced biogas production from lignocellulosic biomass

Cited by 377 publications

References 129 publications

Enhancement of biogas production from organic fraction of municipal solid waste using acid pretreatment

Enhancement of biogas production from organic fraction of municipal solid waste using acid pretreatment

An overview of biomass conversion: exploring new opportunities

Influence of Aerobic Pretreatment of Poultry Manure on the Biogas Production Process

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