Temperature-phased anaerobic co-digestion of food waste and paper waste with and without recirculation: Biogas production and microbial structure

Li, Lü; Kong, Zhe; Qin, Yu; Wu, Jing; Zhu, Aijun; Xiao, Benyi; Ni, Jialing; Kubota, Kengo; Li, Yu You

doi:10.1016/j.scitotenv.2020.138168

Cited by 36 publications

(5 citation statements)

References 41 publications

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“…Compared with relatively stable archaeal communities, the bacterial communities were much more sensitive to variation in HRT/OLR [67,104]. Digestate recirculation simultaneously improved bacterial diversity and alleviated over-acidization in the H 2 stage [105].…”

Section: Influence Factors On Microbial Systemmentioning

confidence: 99%

“…Temperature affected both the chemical reactions and biological activities in AD processes. Thermophilic conditions usually led to lower microbial community diversities [45,104,105]. Compared with relatively stable archaeal communities, the bacterial communities were much more sensitive to variation in HRT/OLR [67,104].…”

Section: Influence Factors On Microbial Systemmentioning

confidence: 99%

See 1 more Smart Citation

Critical Review on Two-Stage Anaerobic Digestion with H2 and CH4 Production from Various Wastes

Zheng,

2024

Water

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Anaerobic digestion (AD) is a promising method for resource recovery from various wastes. Compared to the conventional single-stage AD process, a two-stage AD process with separate H2 and CH4 production provides higher energy recovery efficiency and enhanced operation stability. The stage separation makes it possible to apply optimal conditions for different functional microorganisms in their respective stages. This review elaborates the mechanisms of the two-stage AD process and evaluates recent research trends on this topic. A comprehensive comparison between single- and two-stage AD processes is made from the perspective of biogas production, organics degradation, energy recovery, and operation stability. The main influence factors on the two-stage AD process are discussed, including substrates, inoculum, and operation parameters, such as pH, temperature, etc. Upgrading technologies for the two-stage AD process are assessed. The microbial communities in the two-stage AD process for treating different substrates and the influence factors on microbial systems are also summarized. Furthermore, future research opportunities for enhancing the application of this technology are highlighted.

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Section: Influence Factors On Microbial Systemmentioning

confidence: 99%

Section: Influence Factors On Microbial Systemmentioning

confidence: 99%

Critical Review on Two-Stage Anaerobic Digestion with H2 and CH4 Production from Various Wastes

Zheng,

2024

Water

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“…The physicochemical properties of FW are important indicators of its ability to undergo humification. FW with higher organic matter content, lower TS/VS ratios, and lower C/N ratios can be more easily decomposed and utilized as a nutrient-rich compost. , Additionally, it is worth considering the impact of certain characteristics of FW, such as high oil and salt content, on the process of humification. FW with high oil content may pose challenges during the humification process, as excessive fats can impede microbial activity and hinder decomposition .…”

Section: Overview Of Organic Waste Managementmentioning

confidence: 99%

Transforming Organic Solid Waste Management: Embracing Humification for Sustainable Resource Recovery

Bian,

Boguta,

Huang

et al. 2024

ACS Sustainable Resour. Manage.

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The paper provides an overview of the potential use of humic substances (HS) derived from organic waste in transforming waste management practices. It discusses various types of organic waste, the production methods of HS, and their applications in agriculture, environmental remediation, and industry. The Perspective emphasizes the transformative potential of HS in reshaping organic waste management practices, highlighting improved soil fertility, mitigation of soil degradation, and immobilization of pollutants in soil and water systems. Additionally, it explores the economic viability of HS-based waste management and potential revenue streams from value-added products derived from HS. The paper also addresses environmental and regulatory considerations, emphasizing the importance of comprehensive regulatory frameworks, international policy and regulatory support, and continuous monitoring and evaluation of waste management practices. By integrating HS-based waste management into circular economy models, the paper suggests that it can contribute to resource conservation, nutrient recycling, and the development of a bio-based economy. Overall, the utilization of HS in organic waste management has the potential to revolutionize the field and contribute to sustainable resource recovery. The paper suggests that future research should continue to explore the quantifiable benefits of integrating HS into organic waste management, ultimately contributing to a more sustainable and efficient waste management system.

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“…To address these issues, a two-phase AD process called thermophilic–mesophilic temperature phase AD (TPAD) has been developed. TPAD consists of a short thermophilic phase followed by a longer mesophilic phase 10 . The thermophilic phase speeds up the rate-limiting hydrolysis stage, while the mesophilic phase provides stable conditions for the subsequent stages 11 .…”

Section: Introductionmentioning

confidence: 99%

Thermophilic-mesophilic temperature phase anaerobic co-digestion compared with single phase co-digestion of sewage sludge and food waste

Hu,

Shen

2024

Sci Rep

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Anaerobic co-digestion is an effective method for addressing the issue of a single substrate not being able to achieve optimal conditions for anaerobic digestion. By adjusting the mixture ratio of sewage sludge and food waste to achieve the optimal carbon to nitrogen ratio, the effectiveness of thermophilic–mesophilic temperature phase anaerobic co-digestion (TPAcD) was evaluated in comparison to single phase mesophilic anaerobic co-digestion (MAcD) and thermophilic anaerobic co-digestion (TAcD). The results indicated that TPAcD increased methane yield by 50.3% and 32.7% compared to MAcD and TAcD, respectively. The variation in VFA, pH, and ammonia nitrogen levels demonstrated that TPAcD combines the advantages of both MAcD and TAcD, with a higher hydrolysis rate in the early stage under thermophilic conditions (55 °C) and a suitable environment in the later stage under mesophilic conditions (35 °C). The kinetic parameters of anaerobic co-digestions also demonstrated that TPAcD performs better. Therefore, further research on TPAcD of sewage sludge and food waste is warranted due to its significant improvements in methane production rate, total methane yield, and system stability. Additionally, TPAcD contributes to reducing carbon emissions and supports the realization of “carbon neutrality”.

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Temperature-phased anaerobic co-digestion of food waste and paper waste with and without recirculation: Biogas production and microbial structure

Cited by 36 publications

References 41 publications

Critical Review on Two-Stage Anaerobic Digestion with H2 and CH4 Production from Various Wastes

Critical Review on Two-Stage Anaerobic Digestion with H2 and CH4 Production from Various Wastes

Transforming Organic Solid Waste Management: Embracing Humification for Sustainable Resource Recovery

Thermophilic-mesophilic temperature phase anaerobic co-digestion compared with single phase co-digestion of sewage sludge and food waste

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