Article
Agricultural Engineering
Xinru Jiang, Yandong Xie, Minggang Liu, Shiyu Bin, Yang Liu, Chenchen Huan, Gaosheng Ji, Xinhui Wang, Zhiying Yan, Qingyang Lyu
Summary: This study demonstrates that anaerobic co-digestion system can improve biodegradability to produce more VFAs and biogas, relieve ammonia nitrogen inhibition, enhance hydrolytic acidification and methanogenesis compared to mono sludge digester.
BIORESOURCE TECHNOLOGY
(2022)
Article
Agricultural Engineering
Aijun Zhu, Yu Qin, Jing Wu, Min Ye, Yu-You Li
Summary: The optimal performance was achieved in the thermophilic anaerobic co-digestion process of sewage sludge with paper waste at a ratio of 4:6, where the COD removal efficiency and biogas production increased significantly. The addition of paper waste had a positive impact on the competition between carbohydrate and protein degradation, with cellulolytic bacteria becoming the predominant group.
BIORESOURCE TECHNOLOGY
(2021)
Article
Environmental Sciences
Qian Sheng, Yiqing Lu, Shijie Yuan, Xiaowei Li, Xiaohu Dai, Yali Guo, Bin Dong
Summary: A study investigated the effects of nitrite on hydrolysis-acidification, biogas production, volatile solids destruction, and microbial composition in semi-continuous two-phase anaerobic digestion of sewage sludge. The addition of nitrite promoted sludge organic matter solubilization, VFAs production, and VS degradation rate. However, nitrite had no significant effect on the overall biogas production. The microbial communities in the reactors significantly changed after the addition of nitrite.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2023)
Article
Agricultural Engineering
Shiva Khoei, Abigail Stokes, Brandon Kieft, Paul Kadota, Steven J. Hallam, Cigdem Eskicioglu
Summary: The addition of powdered biochar significantly increased methane production, shortened lag phase, and altered microbial community structure in thermophilic anaerobic digestion.
BIORESOURCE TECHNOLOGY
(2021)
Article
Engineering, Environmental
Pei Gao, Xujia Ming, Xudong Wang, Zhixiang Chen, Yao Liu, Xianguo Li, Dahai Zhang
Summary: This study confirmed the significant role of ozone in anaerobic fermentation gas production and its ability to effectively degrade activated sludge. The mixing of primary sludge with excess sludge exhibited synergistic effects, contributing to the anaerobic fermentation of excess sludge.
WATER SCIENCE AND TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Shasha Wang, Yule Han, Xueqin Lu, Zhongxiang Zhi, Ruiliang Zhang, Teng Cai, Zhongyi Zhang, Xi Qin, Yenan Song, Guangyin Zhen
Summary: The study utilized a combined alkali-microwave-H2O2-oxidation pretreatment with in-situ bioelectrochemical regulation to enhance sludge biodegradability and methane productivity. This approach resulted in higher methane yield and stimulated the growth of functional microorganisms, demonstrating its potential for efficient sludge stabilization and bioenergy recovery strategy.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Green & Sustainable Science & Technology
Vikas Kumar, Brandon Kieft, Parmila Devi, Steven J. Hallam, Cigdem Eskicioglu
Summary: This study investigated the effects of two-step activated carbon cloth on syntrophic microbial associations during anaerobic digestion of municipal sludge. The results showed that activated carbon cloth enhanced methane yield and reduced the lag phase, attributed to its increased electron transfer and methane production kinetics. Additionally, activated carbon cloth promoted the adherence of methane-producing microorganisms, providing a stable environment for syntrophic energy metabolism.
Article
Agricultural Engineering
Ryoko Yamamoto-Ikemoto, Norihisa Matsuura, Ryo Honda, Hiroe Hara-Yamamura, Kanhchany Some, Sereyroth Prak, Kazuyoshi Koike, Taketo Togari
Summary: This study investigated the effect of gradually decreasing rice straw addition on methane production in the thermophilic anaerobic digestion of sewage sludge. The results showed that reducing rice straw addition did not lead to the accumulation of volatile fatty acids and resulted in stable methane production. Even without rice straw, methane production continued under high ammonia conditions. The digested sludge from the experimental digester exhibited higher ammonia tolerance and was dominated by cellulose-degrading bacteria Clostridia and high ammonia-resistant archaea Methanosarcina. The community remained stable for over 200 days after rice straw supply was discontinued.
BIORESOURCE TECHNOLOGY
(2023)
Article
Agricultural Engineering
Yiran Zhou, Kangyi Huang, Xiuyao Jiao, Nemanja Stanisavljevic, Lei Li, Svjetlana Vujovic, Xuya Peng, Xiaoming Wang
Summary: The study found that co-digestion of readily degradable food waste with recalcitrant paper and branches in anaerobic digestion can increase methane cumulative yield and improve production rates, primarily due to the acceleration of hydrolysis by the addition of easily degradable waste. Additionally, the microbial community structure is mainly influenced by the inoculum source.
BIOMASS & BIOENERGY
(2021)
Article
Energy & Fuels
Pengfei Li, Chongbo Cheng, Chao He, Ran Yu, Dekui Shen, Youzhou Jiao
Summary: This study investigated the co-digestion of biomass components with sewage sludge and found that it significantly increased the methane yield. It also analyzed the changes in microbial community during the digestion process.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Environmental Sciences
Lisha Yang, Long Chen, Kai Chen, Hongtao Zhu
Summary: This study investigated the effects of coupling microbial electrolysis cell (MEC) with anaerobic digestion (AD) on methane yield. The results showed that the methane yield was significantly improved through enhanced hydrolysis and acidogenesis, as well as enrichment of hydrogenotrophic methanogens. Carbon felt (CF) as an electrode exhibited the best performance, leading to a higher net energy output. The relative abundance of hydrogenotrophic methanogen in MEC-AD with CF as electrodes increased, contributing to the improved methane yield.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Energy & Fuels
S. S. V. Varsha, Abdul F. Soomro, Zenab T. Baig, Arun K. Vuppaladadiyam, S. Murugavelh, Elsa Antunes
Summary: Globally, kitchen waste and sewage sludge are important organic wastes that require attention during handling and management. This study investigated the synergistic influence of kitchen waste over sewage sludge and vice versa during anaerobic digestion. The results showed that co-digestion of kitchen waste and sewage sludge improved methane production and biodegradability. These findings can guide the design and optimization of co-digestion processes.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Engineering, Environmental
Yingjin Song, Shuyan Meng, Guanyi Chen, Beibei Yan, Yingxiu Zhang, Junyu Tao, Yihang Li, Jinlei Li
Summary: Anaerobic mono- and co-digestion of three feedstocks were studied for methane production, showing that co-digestion can alleviate acidification and improve buffering capacity. Different feedstock mixing ratios may result in synergistic or antagonistic effects.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Green & Sustainable Science & Technology
Miao Chen, Shujun Liu, Xufeng Yuan, Qing X. Li, Fengzhong Wang, Fengjiao Xin, Boting Wen
Summary: This study found that digesters with high feed-to-inoculum ratios without biochar can lead to process failure, but the addition of biochar and/or co-digestion can improve digestion efficiency. Biogas and methane yields were significantly higher in digesters with biochar compared to those without. The maximum biogas and methane yields were achieved with specific feed-to-inoculum and waste to manure ratios, as well as biochar addition.
Article
Green & Sustainable Science & Technology
Afsane Sedighi, Mohsen Karrabi, Bahar Shahnavaz, Morteza Mostafavinezhad
Summary: This study investigated the potential for biogas production from anaerobic codigestion of the organic fraction of municipal solid waste and sewage sludge under mesophilic conditions. The results showed that the best outputs were achieved at TS = 5% and ISR = 2, with the highest biogas yield and methane production.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Agricultural Engineering
Dexin Fang, Gen Zhao, Xiaoyi Xu, Qian Zhang, Qiushi Shen, Zhuoyao Fang, Liping Huang, Fangying Ji
BIORESOURCE TECHNOLOGY
(2018)
Article
Environmental Sciences
Hong Peng, Zhiqiang Zhao, Hong Xiao, Yafei Yang, Huimin Zhao, Yaobin Zhang
JOURNAL OF ENVIRONMENTAL SCIENCES
(2019)
Article
Chemistry, Physical
Qian Zhang, Fangying Ji, Tiantao Zhao, Qiushi Shen, Dexin Fang, Li Kuang, Lei Jiang, Shilin Ding
APPLIED CLAY SCIENCE
(2019)
Article
Engineering, Environmental
Dexin Fang, Anqi Wu, Liping Huang, Qiushi Shen, Qian Zhang, Lei Jiang, Fangying Ji
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Environmental Sciences
Dexin Fang, Xianquan Zhuang, Liping Huang, Qian Zhang, Qiushi Shen, Lei Jiang, Xiaoyi Xu, Fangying Ji
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Environmental Sciences
Qiushi Shen, Fangying Ji, Jiazhi Wei, Dexin Fang, Qian Zhang, Lei Jiang, Anrong Cai, Li Kuang
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Environmental Sciences
Lei Jiang, Anqi Wu, Dexin Fang, Yifang Zhang, Qiushi Shen, Xiaoyi Xu, Fangying Ji
Article
Agricultural Engineering
Pleasure Chisom Ajayo, Mei Huang, Li Zhao, Dong Tian, Jinsong He, Jianmei Zou, Dexin Fang, Yongmei Zeng, Fei Shen
Summary: The high cellulose content in paper mulberry wood makes it a promising feedstock for bioethanol production. The optimal phosphoric acid plus hydrogen peroxide pretreatment conditions were determined, leading to effective removal of non-cellulosic polymers, high recovery of cellulose, and significant glucose yield.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Engineering, Chemical
Ganxue Wu, Siyi Liu, Zhiqiang Chen, Qiyuan Yu, Yinghao Chu, Hong Xiao, Hong Peng, Dexin Fang, Shihuai Deng, Yaoqiang Chen
Summary: The catalytic performance of Cu/Fe-SSZ-13 catalyst treated with base leaching was significantly improved in catalytic reduction of NOx emissions in diesel exhaust, including catalytic activity, hydrothermal stability, and sulfur resistance.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2022)
Article
Environmental Sciences
Junrong Li, Yingjun Wang, Na Li, Yan He, Hong Xiao, Dexin Fang, Chao Chen
Summary: This study investigated the effects of BPA and BPS on Chlorella pyrenoidosa, and found that they significantly influenced the growth, chlorophyll a content, and oxidative stress of the algae. Additionally, the combined action of BPA and BPS exhibited synergistic toxicity. This research provides data support for the potential ecological risks of BPA and BPS in the aquatic environment.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Article
Engineering, Environmental
Dexin Fang, Liping Huang, Jianping Fan, Hong Xiao, Ganxue Wu, Yingjun Wang, Zhenxing Zeng, Fei Shen, Shihuai Deng, Fangying Ji
Summary: This study investigates the relationship between the stacking pattern of layered double hydroxides (LDH) nanosheets and their ion-exchange behavior. The results show that LDH with a disordered stacking morphology exhibits larger pore space and faster exchange rate, which expands the potential application of LDH in phosphate sequestration.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Zhenxing Zeng, Fei Ye, Shihuai Deng, Dexin Fang, Xiaojing Wang, Yanfu Bai, Hong Xiao
Summary: In this study, a novel solar energy triggered water-energy system using Pt single atom catalyst confined by carbon nitride was proposed for efficient organic pollutants degradation and hydrogen generation. The well confined interlayer environment reduces the energy barrier for hydrogen evolution and blocks the access of introduced O2, while the O2 can be activated by the surface layers of carbon nitride to accelerate the mineralization of hole-oxidized pollutants into H2O and CO2. The PtSA/g-C3N4 catalyst exhibited excellent photocatalytic activity for H2 production coupled with p-chlorophenol mineralization.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Xianquan Zhuang, Dexin Fang, Fangying Ji
Summary: The UDDT promotional program in a village in Northwest China achieved significant success after one year, with six implementation factors closely associated with the effectiveness of prevalence, including trigger meetings, follow-up visits, commendation conferences, brand ambassadors, operation demonstration, and on-site training. These results provide solid suggestions for improving the UDDT promotion process.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2021)
