Effect of different aerobic hydrolysis time on the anaerobic digestion characteristics and energy consumption analysis

Qu, Jingbo; Sun, Yong; Awasthi, Mukesh Kumar; Liu, Yuyingnan; Xu, Xinrui; Meng, Xianghui; Zhang, Hongqiong

doi:10.1016/j.biortech.2020.124332

Cited by 46 publications

(11 citation statements)

References 41 publications

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“…When CP was present in the digestive system, the maximum cumulative methane production time was shortened to 19 d, 2 days earlier than the blank. The reduction of the optimal digestion time is of great signi cance in practical engineering, which can improve the treatment e ciency of organic matter (Qu et al 2020). Therefore, the results obtained in this work clearly showed CP improved the co digestion e ciency of PW and ES, and shortened the optimal digestion time.…”

Section: Cp Enhanced the Co-digestion Of Pw And Esmentioning

confidence: 99%

Improvement of anaerobic co-digestion of plant waste and excess sludge using calcium peroxide

Wang¹,

Zhou

Dai

et al. 2021

Environ Sci Pollut Res

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Plant waste (PW) and excess sludge (ES) are two main organic matters of municipal solid waste. However, there are few reports on their anaerobic co-digestion. In this work, the mixed proportion of PW and ES anaerobic co digestion was rst optimized at mesophilic temperature, and then the anaerobic co-digestion of PW and ES was enhanced with strong oxidant calcium peroxide (CP). The results showed that the optimal mixing ratio of PW and ES was 1/1 (in terms of volatile solids), and the C/N of mixed digestion substrate was 23.5/1, the maximum methane production was 172.6 mL/g (in terms of volatile solids). CP could enhance methane production from anaerobic co-digestion of PW and ES. When the content of CP was 0.2 g/g (in terms of total suspended solids), the maximum methane production was 234.8 mL/g, about 1.4 times of the blank. The mechanism investigation showed that CP promoted the release of organic matter during the co-digestion, and the higher the content of CP, the greater the release of soluble chemical oxygen demand. The presence of appropriate amount of CP promoted the activities of key enzymes in anaerobic fermentation process, and then increased the e ciency of methane production. The results of this work provide an alternative strategy for the resource utilization of PW and ES.

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Section: Cp Enhanced the Co-digestion Of Pw And Esmentioning

confidence: 99%

Improvement of anaerobic co-digestion of plant waste and excess sludge using calcium peroxide

Wang¹,

Zhou

Dai

et al. 2021

Environ Sci Pollut Res

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“…But type and mode of substrate application have a critical role in driving the microbial community performance. In a study, cyanobacteria (Leptolyngbya, Synechococcus, and Oscillatoria) and microalgae (Chlorella) were grown in ASN III medium (Roja et al, 2019;Qu et al, 2021). The study demonstrated that cyanobacteria grow faster in the medium as compared to microalgae.…”

Section: Optimization Of Microbial Growth Parametersmentioning

confidence: 99%

Current state of the art biotechnological strategies for conversion of watermelon wastes residues to biopolymers production: A review

et al. 2022

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“…These chains are not directly accessible to microorganisms for exploiting their energy potential. Therefore, these high molecular weight chains are broken down to the lower molecular weight sugars [38]. The process of breaking large chain molecules is called hydrolysis.…”

Section: Mathematical Modelingmentioning

confidence: 99%

Modeling and Simulation of Solid Oxide Fuel Cell Integrated with Anaerobic Digester, Thermal Storage Unit and Solar Collector: A Net Zero Emission System

Naseer

Kamal

Abid

et al. 2022

International Journal of Photoenergy

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Energy production from clean and green sources is one of the eminent challenges to mankind. Overall, all industrial sectors contribute to CO2 emission, but the energy production sector is a major contributor. In recent years, CO2 emissions from the energy sector have increased by 1.7%. Therefore, the development of alternative energy production sources is a pivot for researchers. In this regard, the fuel cell has been a promising technology but still accompanied by the release of greenhouse gasses but relatively lower than that of fossil fuels. The integration of the fuel cell to the biogas has been a promising factor to reduce emissions. This study contributes to the same by producing a self-sustaining biogas-fuel cell multigeneration system for cold areas. Mathematical modeling of all complements of the system, i.e., anaerobic digester, solid oxide fuel cell, solar collector, and thermal storage system, is provided. MATLAB/Simulink environment is used for simulation of the system. The proposed system will use an anaerobic digester for methane production. Hence, produced methane will be used to power solid oxide fuel cell. The electricity of the fuel cell will power the residential place, and the thermal potential of the exhaust will be stored. In daylight, the solar thermal potential will be utilized for district heating. In the absence of solar light, stored thermal energy will be used for district heating and hot water supply. Additionally, the CO2 emitted from the system will not be released into the environment but stored for industrial purposes. The best area of application of the proposed system is cold areas such as Switzerland.

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Effect of different aerobic hydrolysis time on the anaerobic digestion characteristics and energy consumption analysis

Cited by 46 publications

References 41 publications

Improvement of anaerobic co-digestion of plant waste and excess sludge using calcium peroxide

Improvement of anaerobic co-digestion of plant waste and excess sludge using calcium peroxide

Current state of the art biotechnological strategies for conversion of watermelon wastes residues to biopolymers production: A review

Modeling and Simulation of Solid Oxide Fuel Cell Integrated with Anaerobic Digester, Thermal Storage Unit and Solar Collector: A Net Zero Emission System

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