Article
Thermodynamics
Shuai Tang, Sijie Huang, Weizhong Jiang, Haifeng Lu, Yuanhui Zhang, Bo Zhou, Buchun Si
Summary: The establishment of a multistage anaerobic hythane reactor (MAHR) that integrates biohythane and biomethane production into a single reactor demonstrates promising potential for simultaneously producing hythane and methane. The study shows that stable hythane and methane production can be achieved in MAHR without inoculum preselection, and MAHR without inoculum preselection suggests a higher methane production rate and resistance to organic loading shock. The microbial community dynamics and stage separation mechanisms are also explored in this study.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Energy & Fuels
Giuseppe Lembo, Antonella Signorini, Antonella Marone, Claudio Carbone, Alessandro Agostini
Summary: This study evaluates the economic performances and carbon footprint of innovative systems for the energetic valorization of second cheese whey. The results show that the on-site two-stage anaerobic digester (TAD) is the most economically viable option with a significant reduction in greenhouse gas emissions.
Article
Thermodynamics
Zhi Wang, Jian Li, Zhiyu Li, Gaixiu Yang, Xiaoyu Zuo, Yan Cao, Xiujin Li, Guanyi Chen, Beibei Yan
Summary: This study investigated a coupling strategy that integrated anaerobic digestion (AD) and chemical looping gasification (CLG) for comprehensive utilization of distillers' grains (DGs). The optimal coupling strategy was found to be 6 days of AD and CLG, which resulted in energy recovery of 16.80 MJ/kg TS, mass conversion of 47.73%, carbon efficiency of 55.06%, and CO2 emissions of 39.72%. Anaerobic digestion was found to be more conducive to energy recovery than CLG, and the biodegradable threshold of DGs was expected to be obtained in the AD stage.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Engineering, Environmental
Jie Liu, Zi Zhang, Yangfan Deng, Yugo Sato, Di Wu, Guanghao Chen
Summary: The study investigated the impact of extracting bioactive polysaccharides (PSs) from waste activated sludge (WAS) on methane production. The results showed that extracting PSs before anaerobic digestion (AD) resulted in higher methane production and PS yield compared to extracting PSs after AD. The study also evaluated the bioactivity of the extracted PSs and their environmental impacts, finding that the sulfate content, protein content, and monosaccharide composition of the PSs influenced their bioactivity. The environmental impact analysis demonstrated that the coupling of PS extraction and methane recovery was the most favorable in terms of environmental indicators.
Article
Engineering, Environmental
Jiri Rusin, Katerina Chamradova, Panagiotis Basinas
Summary: Anaerobic digestion of food waste at low temperature can efficiently produce biomethane. The two-stage low-temperature reactor is more energy-efficient and operates stably compared to mesophilic reactors.
Article
Energy & Fuels
Rocio Auxiliadora Lopez, Miriam Tena, Rosario Solera, Montserrat Perez
Summary: This study aimed to energetically valorize sludge from wastewater treatment plants and discharges from the wine sector through anaerobic co-digestion. Two different processes, single-stage mesophilic anaerobic digestion and Temperature-Phased Anaerobic Digestion (TPAD), were employed for the valorization. Biodegradability tests were conducted to determine the methane production yield, and the results showed that the single-stage process was more effective in methane generation compared to the TPAD process.
Article
Engineering, Environmental
Hao Yang, Buchun Si, Sijie Huang, Houkai Wu, Zhidan Liu
Summary: In this study, a novel multistage anaerobic hythane reactor (MAHR) was used to treat hydrothermal carbonation wastewater (HTCWW) and compared with a conventional up-flow anaerobic sludge bed reactor (UASB). The results showed that MAHR achieved better degradation performance and methane production in treating HTCWW. It was also found that the methane-producing area in MAHR gradually transformed in the process of feeding HTCWW. Additionally, the microbial communities in MAHR underwent significant changes. Overall, this study demonstrates that MAHR is a promising configuration for the treatment of hydrothermal wastewater.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Green & Sustainable Science & Technology
Archana Paranjpe, Seema Saxena, Pankaj Jain
Summary: In this study, the researchers investigated the co-digestion of food waste (FW) and sewage sludge (SS) using single-stage anaerobic digestion (SSAD) and two-stage anaerobic digestion (TSAD) processes. The results showed that the TSAD process with a FW to SS mass ratio of 60:40 achieved higher biogas production, volatile solid (VS) removal efficiency, and methane (CH4) concentration compared to the SSAD process.
ENERGY FOR SUSTAINABLE DEVELOPMENT
(2023)
Article
Engineering, Chemical
Alberto Teixeira Penteado, Giovanna Lovato, Abigail Perez Ortiz, Erik Esche, Jose Alberto Domingues Rodrigues, Hamid Reza Godini, Alvaro Orjuela, Julija Gusca, Jens-Uwe Repke
Summary: The study investigates the potential of utilizing effluents from Brazil's biofuels industry to produce biogas, which can then be used to produce bio-ethylene through Oxidative Coupling of Methane (OCM) as a substitute for fossil ethylene, potentially reducing greenhouse gas emissions.
Article
Engineering, Environmental
Khaliyah Sani, Prawit Kongjan, Charoen Pakhathirathien, Benjamas Cheirsilp, Sompong O-Thong, Marisa Raketh, Rusnee Kana, Rattana Jariyaboon
Summary: The study investigated the biohydrogen and biomethane potential of palm oil mill effluent (POME) in a two-stage anaerobic digestion system under thermophilic and mesophilic conditions. The results showed that the best production potentials were obtained from POME with an initial 0.5 g-COD loading, and the energy yield achieved from two-stage AD was significantly higher than single-stage AD. Continuous production of hydrogen and methane revealed that the highest yields were generated at specific hydraulic retention times, with an overall COD removal of approximately 66.27%.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Review
Biochemical Research Methods
Martijn Diender, Ivette Parera Olm, Diana Z. Sousa
Summary: Synthetic microbial co-cultivation is an increasingly explored approach in biotechnology, which enhances the metabolic potential and process capabilities of microbes. The research findings suggest that co-cultivation can reduce undesired side reactions, promote microbial interactions, and open up new possibilities in areas like waste conversion.
CURRENT OPINION IN BIOTECHNOLOGY
(2021)
Review
Agricultural Engineering
Suyun Xu, Zihao Qiao, Liwen Luo, Yongqi Sun, Jonathan Woon-Chung Wong, Xueyu Geng, Jing Ni
Summary: The advantages of anaerobic digestion (AD) technology in organic solid waste treatment for bioenergy recovery are globally recognized. Attention has shifted towards on-site biogas research and biogenic CO2 sequestration from AD plants to achieve "carbon neutral". Various CO2 bioconversion technologies within AD systems offer promising solutions for reducing greenhouse gas emissions and increasing renewable energy recovery.
BIORESOURCE TECHNOLOGY
(2021)
Article
Engineering, Environmental
Congfeng Xu, Zheng Bao, Chun Hu, Lai Lyu
Summary: In this study, a new strategy to improve anaerobic digestion (AD) efficiency by adding surface electronpolarized biochar was proposed. The addition of conductive materials (CM) containing electron-poor/rich regions enhanced methane production from pig manure and rice straw co-digestion systems. Metagenomic binning strategy revealed the synergistic metabolic mechanisms between cellulose degradation and methane production. The identification of potentially unculturable electroactive microorganisms provides important insights into improving the AD performance.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Agricultural Engineering
Ziqi Xu, Hairong Yuan, Xiujin Li
Summary: This study found that using longer hydraulic retention time and higher load in anaerobic bioconversion of rice straw can lead to increased biogas and methane production. Systems with different HRTs and loads have impacts on microbial richness, diversity, and bacterial and archaeal community compositions, thus affecting bioconversion efficiencies.
BIORESOURCE TECHNOLOGY
(2021)
Article
Engineering, Environmental
Wanjiang Li, Teng Cai, Xueqin Lu, Yule Han, Dilibaierkezi Kudisi, Guohua Chang, Ke Dong, Guangyin Zhen
Summary: This study constructed a new recirculated two-phase anaerobic digestion system for renewable energy recovery from waste activated sludge. The results showed that the system achieved high yields of H2 and CH4 with efficient COD removal. The synergy of membrane separation and recirculation system promoted the growth of key microorganisms, enhancing the biodegradation of waste activated sludge. The system also significantly increased net energy output compared to the control system without recirculation.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Jinchen Cao, Lang Liu, Chao Liu, Chao He
Summary: Molecular dynamics simulations were used to investigate the phase change mechanisms of paraffin wax in crude oil. It was observed that in the absence of a pour point depressant, paraffin crystals formed tangled three-dimensional networks that are difficult to dissolve in the oil phase. The viscosity and phase transition temperature of the system increased with the chain length of paraffin molecules. The addition of a pour point depressant prevented the formation of insoluble networks and resulted in homogeneously distributed paraffin crystals with lower viscosity and phase transition point.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Green & Sustainable Science & Technology
Youzhou Jiao, Huizan Xue, Chao He, Zigang Wang, Xiaoran Ma, Xinxin Liu, Liang Liu, Chun Chang, Francesco Petracchini, Panpan Li
Summary: Anaerobic digestion (AD) with the addition of nano zero-valent iron (NZVI) and biochar (BC) as additives can enhance methane production, with the optimal addition amount being 9%. Exceeding 9% can inhibit gas and methane production. The combination of NZVI and BC improves methane content and organic acid degradation efficiency in corn straw AD, making it a promising commercial application.
ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY
(2022)
Article
Agricultural Engineering
Chao He, Hao Song, Liang Liu, Panpan Li, Mukesh Kumar Awasthi, Guizhuan Xu, Quanguo Zhang, Youzhou Jiao, Chun Chang, Yingkui Yang
Summary: The addition of hydrogen-nanobubble water significantly increased methane production from corn straw, with a maximum yield of 254.36 mL·g-VS-1. The presence of H-2-NBW disrupted the cellulose structure, reduced crystallinity, and promoted hydrolysis.
BIORESOURCE TECHNOLOGY
(2022)
Article
Agricultural Engineering
Pengfei Li, Qi Wang, Xiaoman He, Ran Yu, Chao He, Dekui Shen, Youzhou Jiao
Summary: The study revealed that the addition of Fe3O4 additive had the best effect on methane production during the co-digestion of corn straw and sewage sludge, significantly increasing methane yield. Biochar and magnetic biochar showed relatively limited effectiveness compared to Fe3O4, which can enhance direct interspecies electron transfer and methane production pathways. Additionally, cost-benefit analysis demonstrated that recycling Fe3O4 additive is the most economically beneficial strategy.
BIORESOURCE TECHNOLOGY
(2022)
Article
Agricultural Engineering
Hui Zhang, Chengpu Guo, Youzhou Jiao, Xinxin Liu, Chao He, Mukesh Kumar Awasthi, Liang Liu, Chun Chang
Summary: An exergy equilibrium model was established to analyze the exergy efficiency of corn stalk pretreatment and anaerobic digestion. The Genetic Algorithm (GA) was used to optimize the exergy efficiency, achieving a maximum efficiency of 19.04%. The validation experiment showed a 24.37% increase in exergy efficiency compared to the non pretreatment process. These optimal conditions reduced the energy consumption of pretreatment and shortened the duration of bio-methane production process.
BIORESOURCE TECHNOLOGY
(2022)
Review
Agricultural Engineering
Yaping Zheng, Quanguo Zhang, Zhiping Zhang, Yanyan Jing, Jianjun Hu, Chao He, Chaoyang Lu
Summary: The production of biohydrogen from agricultural waste via fermentation is a cost-effective and environmentally friendly method for utilizing large-scale agricultural waste. Numerous studies have focused on improving the efficiency of biohydrogen production. This review provides an overview of the various approaches and recent advances in improving biohydrogen production from agricultural waste. Additionally, it comprehensively discusses the critical factors, challenges, and future prospects for biohydrogen production.
BIORESOURCE TECHNOLOGY
(2022)
Article
Materials Science, Paper & Wood
Gang Li, Zilin Li, Taikun Yin, Jingpin Ren, Yalei Wang, Youzhou Jiao, Chao He
Summary: Agricultural and forestry biomass direct-fired power generation is an important technology for promoting low-carbon energy transition and sustainable development. Steel heat carriers were used to recover high-temperature ash waste heat and dewater and dry high moisture biomass. The optimization of waste heat recovery and mixed drying process resulted in reduced fuel moisture and improved thermal efficiency.
Article
Environmental Sciences
Xiaohui Pan, Yun Zhang, Chao He, Gang Li, Xiaoran Ma, Quanguo Zhang, Liang Liu, Mingming Lan, Youzhou Jiao
Summary: The effects of preparation conditions of pig bone-derived biochar additives on anaerobic fermentation were investigated. The optimized biochar showed improved performance in terms of methane production and pH buffering.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Biotechnology & Applied Microbiology
Youzhou Jiao, Ninglu Zhang, Chao He, Xiaoran Ma, Xinxin Liu, Liang Liu, Tingting Hou, Ziang Wang, Xiaohui Pan
Summary: Efficient utilization of stalk and sludge was achieved by preparing mixed biochar and adding it to anaerobic fermentation. The study found that under specific conditions, the mixed biochar significantly increased methane production, and there was a correlation between the characteristics of biochar and methane production.
BIOCHEMICAL ENGINEERING JOURNAL
(2022)
Article
Agricultural Engineering
Youzhou Jiao, Yongkang Yuan, Chao He, Liang Liu, Xiaohui Pan, Panpan Li
Summary: Enrichment culture combined with microbial electrochemical system significantly increased methane production in low-temperature anaerobic digestion by altering microbial communities and stimulating enzyme gene expression.
BIORESOURCE TECHNOLOGY
(2022)
Article
Energy & Fuels
Shijie Wang, Yihang Chen, Yu Jia, Chen Wang, Guizhuan Xu, Youzhou Jiao, Chao He, Chun Chang, Qianhui Guo
Summary: An effective catalytic strategy using ultrastable Y zeolite (USY) as the catalyst was developed for the conversion of glucose to 5-ethoxymethylfurfural (EMF). The appropriate co-solvent was screened, and tetrahydrofuran (THF) was found to be the optimal co-solvent. The study also investigated the mechanism and solvent effect at the molecular scale, providing valuable insights for the efficient synthesis of EMF from carbohydrates catalyzed by solid acid catalyst under solvent effect.
Article
Environmental Sciences
Gang Li, Taikun Yin, Zhan Sun, Wenbo Wu, Chaofeng Sun, Chao He, Xiaohui Pan, Liang Liu, Haixing Chang
Summary: Utilizing acetate fiber cloth (AFC) prepared from waste cigarette filters is an economic and effective approach for removing ammonia odor, providing a solution for solid waste disposal and odor control.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Hao Song, Tingting Hou, Youzhou Jiao, Liang Liu, Xiaohui Pan, Gang Li, Quanguo Zhang, Yu Zeng, Zhiqiang Cui, Pengfei Li, Mukesh Kumar Awasthi, Chao He
Summary: Nanobubble water (NBW) can improve methane production from anaerobic digestion (AD) of corn straw without causing secondary contamination. The addition of carbon dioxide nanobubble water (CO2-NBW) enhances methane production, promotes substrate degradation, acts as a buffer to mitigate pH decrease, and enhances microorganism activity in the AD process.
Review
Energy & Fuels
Xinxin Liu, Shuoshuo Li, Liang Liu, Chao He, Zhuang Sun, Faruk Ozdemir, Muhammad Aziz, Po-Chih Kuo
Summary: Curved-tube heat exchangers are widely used in various industries due to their compact structure, ease of processing, and high heat transfer coefficient. Understanding the heat transfer characteristics of supercritical fluids in these curved tubes is crucial for their design and optimization. However, the flow of supercritical fluids in curved tubes is more complex compared to straight tubes due to the dual effects of buoyancy and centrifugal force. Therefore, further research is needed to gain insight into their unique characteristics and heat transfer mechanisms.
Article
Thermodynamics
Pengfei Li, Chongbo Cheng, Rui Guo, Ran Yu, Youzhou Jiao, Dekui Shen, Chao He
Summary: This study investigated the anaerobic digestion of artificial biomass and sludge and found that lignin inhibited the degradation of cellulose, hemicellulose, and sludge, while the interaction between cellulose, hemicellulose, and sludge promoted methane production. The addition of sludge improved the diversity and evenness of the bacterial community, leading to increased methane production.
Article
Agricultural Engineering
Yinping Xiang, Meiying Jia, Rui Xu, Jialu Xu, Lele He, Haihao Peng, Weimin Sun, Dongbo Wang, Weiping Xiong, Zhaohui Yang
Summary: This study investigated the impact of the non-antibiotic pharmaceutical carbamazepine on antibiotic resistance genes (ARGs) during anaerobic digestion. The results showed that carbamazepine induced the enrichment of ARGs and increased the abundance of bacteria carrying these genes. It also facilitated microbial aggregation and intercellular communication, leading to an increased frequency of ARGs transmission. Moreover, carbamazepine promoted the acquisition of ARGs by pathogens and elevated their overall abundance.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Weixin Zhao, Tianyi Hu, Hao Ma, Dan Li, Qingliang Zhao, Junqiu Jiang, Liangliang Wei
Summary: This review summarizes the effects and potential mechanisms of biochar on microbial behavior in AD systems. The addition of biochar has been found to promote microbial colonization, alleviate stress, provide nutrients, and enhance enzyme activity. Future research directions include targeted design of biochar, in-depth study of microbial mechanisms, and improved models.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Christina Karmann, Anna Magrova, Pavel Jenicek, Jan Bartacek, Vojtech Kouba
Summary: This review assesses nitrogen removal technologies in reject water treatment, highlighting the differences in environmental impacts and economic benefits. Partial nitritation-anammox shows potential for economic benefits and positive environmental outcomes when operated and controlled properly.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Wei-Hao Huang, Ying-Ju Chang, Duu-Jong Lee
Summary: This study modified pinecone biochar with layered double hydroxide (LDH) to enhance its adsorption capacity for heavy metal and phosphate ions. The LDH-biochar showed significantly improved adsorption capacities for Pb2+ and phosphate, and a slight increase for Cu2+ and Co2+. The LDH layer enhanced the adsorption through various mechanisms.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Chao Song, Fanfan Cai, Shuang Yang, Ligong Wang, Guangqing Liu, Chang Chen
Summary: This paper developed a machine learning model to predict the biochemical methane potential during anaerobic digestion. Model analysis identified lignin content, organic loading, and nitrogen content as key attributes for methane production prediction. For feedstocks with high cellulose content, early methane production is lower but can be improved by prolonging digestion time. Moreover, lignin content exceeding a certain value significantly inhibits methane production.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Sang Min Lee, Ju Young Lee, Ji-Sook Hahn, Seung-Ho Baek
Summary: This study successfully developed an efficient platform strain using Yarrowia lipolytica for the bioconversion of renewable resources into adipic acid, achieving a remarkable increase in production level.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Sefkan Kendir, Matthias Franzreb
Summary: This study presents a novel approach using magnetic separation to efficiently harvest freshwater microalgae, Chlorella vulgaris. By combining pH-induced calcium phosphate precipitation with cheap natural magnetite microparticles, harvesting efficiencies up to 98% were achieved in the model medium.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Ishaq Kariim, Ji-Yeon Park, Wajahat Waheed Kazmi, Hulda Swai, In-Gu Lee, Thomas Kivevele
Summary: The impact of reaction temperature, residence time, and ethanol: acetone on the energy compositions and yield enhancement of biocrudes was investigated. The results showed that under appropriate conditions, biocrudes with high energy and low oxygen content can be obtained, indicating a high potential for utilization.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Xiyue Zhang, Xiyao Li, Liang Zhang, Yongzhen Peng
Summary: Intermittent aeration is an innovative approach to enhance nitrogen removal in low carbon-to-nitrogen ratio municipal sewage, providing an efficient strategy for the continuous plug-flow AOA process.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Xu Yang, Mahmoud Mazarji, Mengtong Li, Aohua Li, Ronghua Li, Zengqiang Zhang, Junting Pan
Summary: This study investigated the impact of magnetite on the nitrogen cycle of pig manure biostabilisation. The addition of magnetite increased N2O emissions and decreased NH3 emissions during composting. It also increased the total nitrogen content but should be considered for its significant increase in N2O emissions in engineering practice.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Ty Shitanaka, Haylee Fujioka, Muzammil Khan, Manpreet Kaur, Zhi-Yan Du, Samir Kumar Khanal
Summary: The market value of microalgae has exponentially increased in the past two decades, thanks to their applications in various industries. However, the supply of high-value microalgal bioproducts is limited due to several factors, and strategies are being explored to overcome these limitations and improve microalgae production, thus increasing the availability of algal-derived bioproducts in the market.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Martin Kerner, Thorsten Wolff, Torsten Brinkmann
Summary: The efficiency of using enriched CO2 from flue gas for large-scale production of green microalgae has been studied. The results show that the use of membrane devices and static mixers can effectively improve the CO2 recovery rate and maintain the suitable pH and temperature during cultivation, achieving a more economical and sustainable microalgae production.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Rui Ma, Ji Li, Rd Tyagi, Xiaolei Zhang
Summary: This review summarizes the microorganisms capable of using CO2 and CH4 to produce PHAs, illustrating the production process, factors influencing it, and discussing optimization techniques. It identifies the challenges and future prospects for developing economically viable PHAs production using GHGs as a carbon source.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Bing Wang, Peng Zhang, Xu Guo, Xu Bao, Junjie Tian, Guomin Li, Jian Zhang
Summary: The addition of zeolite in the co-composting of chicken manure and straw significantly reduced the emissions of ammonia and N2O, and increased the nitrate content. Zeolite also promoted the abundance of nitrification genes and inhibited the expression of denitrification genes.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Rohit Dey, Franziska Ortiz Tena, Song Wang, Josef Martin Messmann, Christian Steinweg, Claudia Thomsen, Clemens Posten, Stefan Leu, Matthias S. Ullrich, Laurenz Thomsen
Summary: This study investigated the operation of a 1000L microalgae-based membrane photobioreactor system for continuous secondary wastewater treatment. The research focused on a green microalgae strain called Desmodesmus sp. The study aimed to understand key trends and optimization strategies by conducting experiments in both summer and winter seasons. The findings showed that maintaining low cell concentrations during periods of light inhibition was beneficial for nutrient uptake rates. Effective strategies for enhancing algae-based wastewater treatment included cell mass recycling and adjusting dilution rates based on light availability.
BIORESOURCE TECHNOLOGY
(2024)
