Inorganic additives to increase methane generation during anaerobic digestion of livestock manure: a review

Liu, Xuna; Qi, Luqing; Chatzisymeon, Efthalia; Yang, Ping; Sun, Weiyi; Pang, Lei

doi:10.1007/s10311-021-01282-z

Cited by 11 publications

(4 citation statements)

References 96 publications

(105 reference statements)

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“…Another inorganic additive that, in recent decades, has gained interest as an additive in anaerobic digestion and has been also used in the anaerobic digestion of primary sewage sludge is zero-valent iron (ZVI). ZVI which is a non-toxic and cost-effective metal monomer [65]. It has been reported that with the addition of ZVI into an anaerobic digester, more organics can directly be hydrolyzed and fermented into acetate due to its ability to serve as an electron donor in microbial metabolism [66].…”

Section: Minerals and Nanometal Particles In The Anaerobic Digestion ...mentioning

confidence: 99%

Enhancing Methane Yield in Anaerobic Co-Digestion of Primary Sewage Sludge: A Comprehensive Review on Potential Additives and Strategies

Sakaveli,

Petala,

Tsiridis

et al. 2024

Waste

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Traditionally, anaerobic digestion has been applied to mixed sludge, combining primary sludge (PS) with secondary sludge. However, recent research has unveiled the advantages of dedicated PS digestion due to its higher energy content. Anaerobic digestion (AD) of primary sewage sludge can offer a sustainable solution for managing sewage sludge while generating renewable energy. The present study provides a comprehensive examination of the current state of knowledge regarding the anaerobic digestion of PS. Co-digestion of PS with organic substrates, including food waste and agro-industrial residues, emerges as a promising approach to boost biogas production. Additionally, the utilization of additives such as glucose and clay minerals has shown potential in improving methane yield. Critical factors affecting AD, such as pretreatment methods, carbon-to-nitrogen (C/N) ratio, temperature, pH, volatile fatty acids (VFAs) levels, organic loading rates (OLR), inoculum-to-substrate ratio (ISR), and the role of additives, have been meticulously studied. Finally, this review consolidates existing knowledge to advance our understanding of primary sewage sludge anaerobic digestion, fostering more efficient and sustainable practices in sludge management and renewable energy generation.

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Section: Minerals and Nanometal Particles In The Anaerobic Digestion ...mentioning

confidence: 99%

Enhancing Methane Yield in Anaerobic Co-Digestion of Primary Sewage Sludge: A Comprehensive Review on Potential Additives and Strategies

Sakaveli,

Petala,

Tsiridis

et al. 2024

Waste

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“…FeNPs have been investigated in most of the studies in the area of AD of biomass and subsequent biogas production [ 154 ]. Fe-based additives were reported to influence microbial activity during AD [ 154 , 166 , 169 ]. Yang et al [ 170 ] performed microbial diversity analysis (nZVI supplemented AD of swine manure) and found an abundance of hydrogenotrophic Methanomassiliicoccus (39.2–92.0%).…”

Section: Solutionsmentioning

confidence: 99%

Overview on agricultural potentials of biogas slurry (BGS): applications, challenges, and solutions

Kumar

Verma

Sharma

et al. 2022

Biomass Conv. Bioref.

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Graphical abstract The residual slurry obtained from the anaerobic digestion (AD) of biogas feed substrates such as livestock dung is known as BGS. BGS is a rich source of nutrients and bioactive compounds having an important role in establishing diverse microbial communities, accelerating nutrient use efficiency, and promoting overall soil and plant health management. However, challenges such as lower C/N transformation rates, ammonia volatilization, high pH, and bulkiness limit their extensive applications. Here we review the strategies of BGS valorization through microbial and organomineral amendments. Such cohesive approaches can serve dual purposes viz. green organic inputs for sustainable agriculture practices and value addition of biomass waste. The literature survey has been conducted to identify the knowledge gaps and critically analyze the latest technological interventions to upgrade the BGS for potential applications in agriculture fields. The major points are as follows: (1) Bio/nanotechnology-inspired approaches could serve as a constructive platform for integrating BGS with other organic materials to exploit microbial diversity dynamics through multi-substrate interactions. (2) Advancements in next-generation sequencing (NGS) pave an ideal pathway to study the complex microflora and translate the potential information into bioprospecting of BGS to ameliorate existing bio-fertilizer formulations. (3) Nanoparticles (NPs) have the potential to establish a link between syntrophic bacteria and methanogens through direct interspecies electron transfer and thereby contribute towards improved efficiency of AD. (4) Developments in techniques of nutrient recovery from the BGS facilities’ negative GHGs emissions and energy-efficient models for nitrogen removal. (5) Possibilities of formulating low-cost substrates for mass-multiplication of beneficial microbes, bioprospecting of such microbes to produce bioactive compounds of anti-phytopathogenic activities, and developing BGS-inspired biofertilizer formulations integrating NPs, microbial inoculants, and deoiled seed cakes have been examined.

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“…Food waste is almost free from emerging contaminants; however, biogas productivity from anaerobic digestion of food waste as a standalone substrate is quite low (Chew et al 2021;Liu et al 2021b). The bioenergy productivity is highly increased by anaerobic digestion of food waste with co-substrate, i.e., agricultural, biosolids or sludge, and manures.…”

Section: Anaerobic Digestion Of Sludges Containing Emerging Contaminantsmentioning

confidence: 99%

Methods to alleviate the inhibition of sludge anaerobic digestion by emerging contaminants: a review

et al. 2022

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The rising occurrence of emerging contaminants in sludges both inhibits the anaerobic digestion of sludges and induces health issues when sludges are recycled in agriculture, calling for methods to remove contaminants. Here we review emerging pollutants in wastewater treatment plants, before and after anaerobic digestion. We present their inhibitory effects and remediation methods to alleviate inhibition. Pharmaceuticals have been detected in about 50% of the sludge samples. Sewage sludge contaminants include 19% of diuretics, 16–21% of lipid-modifying agents, hydrochlorothiazide, diclofenac, furosemide, clarithromycin, atorvastatin, and carbamazepine. Levels of antibiotics, azithromycin, ciprofloxacin, and estrone range from 500 to 600 ng/g in sludges from wastewater treatment plants. Remediation methods comprise electrooxidation, ultrasonication, thermal hydrolysis, ozonation, and bioaugmentation. Fermenting the sludges with acidogenic bacteria reduces the level of emerging pollutants in the supernatant. Nonetheless, liquid digestates still contains emerging pollutants such as sunscreen octocrylene at 147 ug/L and acetaminophen at 58.6 ug/L. As a result, pretreatment of sludge containing emerging pollutants is required.

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Inorganic additives to increase methane generation during anaerobic digestion of livestock manure: a review

Cited by 11 publications

References 96 publications

Enhancing Methane Yield in Anaerobic Co-Digestion of Primary Sewage Sludge: A Comprehensive Review on Potential Additives and Strategies

Enhancing Methane Yield in Anaerobic Co-Digestion of Primary Sewage Sludge: A Comprehensive Review on Potential Additives and Strategies

Overview on agricultural potentials of biogas slurry (BGS): applications, challenges, and solutions

Methods to alleviate the inhibition of sludge anaerobic digestion by emerging contaminants: a review

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