Review
Green & Sustainable Science & Technology
Qianqian Zhang, Yu Yang, Li-an Hou, Hongtao Zhu, Yaobin Zhang, Jian Pu, Yuyou Li
Summary: Anaerobic digestion (AD) is a crucial technology for the treatment of organic wastes, but there are still challenges such as low digestibility and slow reaction kinetics in practical implementation, limiting bio-product production. Carbon-based additives (CAs), particularly biochar and activated carbon (AC), have shown great potential in enhancing AD performance by facilitating direct interspecies electron transfer (DIET) and adjusting microorganisms. In this review, the research advancements in the use of CAs in AD systems are comprehensively summarized, covering the construction of CAs, their macro-behaviors, micro-mechanisms, and hybrid strategies. Furthermore, future modifications and applications of CAs in AD systems are discussed.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Computer Science, Interdisciplinary Applications
Fatma Kourdourli, Lionel Estel, Bechara Taouk, Lokmane Abdelouahed
Summary: This study examines the production of hydrogen from biogas via biomass. Various processes of hydrogen production from biogas are modeled and evaluated, with the DA-Steam Reforming process found to be the most efficient. This process yields around 5.71l/day of H2 with an energy efficiency of 82.72% and a CO2 emission of about 12.83 kg CO2 for 1 kg H2 produced.
COMPUTERS & CHEMICAL ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Mo Zhang, Apichit Maneengam, Maryium Sajjad, Atif Ali, Ahmed A. Allam, Jamaan S. Ajarem, Jong Seong Khim
Summary: This research explores the use of bio-based carbon additives to improve anaerobic digestion system performance, emphasizing enhancing bacterial syntropy and increasing methane production to improve biogas output, aiming for energy generation and sustainable environment.
Article
Agricultural Engineering
Zahra Al Hasani, Jagdeep Kumar Nayak, Halima Alhimali, Abdullah Al-Mamun
Summary: The study found that the use of conductive additive GAC/nZVI in anaerobic digestion process can significantly increase the biogas production and methane generation, as well as improve the removal rate of COD.
BIORESOURCE TECHNOLOGY
(2022)
Article
Environmental Sciences
Zhe Kong, Tianwei Hao, Hong Chen, Yi Xue, Dapeng Li, Yang Pan, Yong Li, Yu-You Li, Yong Huang
Summary: This study theoretically compared the feasibility of using anaerobic membrane bioreactor (AnMBR) and conventional activated sludge (CAS) process for treating DMF-containing wastewater. The results showed that AnMBR had advantages in electricity generation, bio-energy recovery, and CO2 emission reduction, making it a promising carbon-neutral treatment process for high-strength DMF-containing wastewater in the future.
ENVIRONMENTAL RESEARCH
(2023)
Article
Engineering, Environmental
Qiuxian Qi, Chen Sun, Jingxin Zhang, Yiliang He, Yen Wah Tong
Summary: The study found that adding biochar produced at 900 degrees Celsius significantly increased methane production and the bioavailability of trace elements in AD systems. The addition of biochar enhanced enzyme gene abundance and activity, leading to improved methane metabolism.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Chen Shi, Yong Hu, Takuro Kobayashi, Nan Zhang, Hidetoshi Kuramochi, Zhenya Zhang, Zhongfang Lei, Kai-Qin Xu
Summary: Decabromodiphenyl ether was anaerobically digested in two continuously stirred anaerobic bioreactors under thermophilic and mesophilic conditions for 210 days. The degradation followed first-order reaction kinetics, with a higher removal rate in the thermophilic reactor. Dominant species in the thermophilic reactor were Bacillus sp. and Methanosarcina sp. with high bioactivity and concentrations of debromination microorganisms.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Biotechnology & Applied Microbiology
Kerstin Heitkamp, Adriel Latorre-Perez, Sven Nefigmann, Helena Gimeno-Valero, Cristina Vilanova, Efri Jahmad, Christian Abendroth
Summary: Recent research has shown that DIET can improve methane productivity in methanogenic archaea. Industrial biogas plants were upgraded with biochar, resulting in a significant decrease in volatile acids. Microbial diversity was higher in biochar particles compared to sludge, with the frequent occurrence of Methanoculleus.
BIOTECHNOLOGY FOR BIOFUELS
(2021)
Review
Environmental Sciences
Xinzheng Zhang, Yuqin Fan, Tianwei Hao, Rong Chen, Tao Zhang, Yong Hu, Dapeng Li, Yang Pan, Yu-You Li, Zhe Kong
Summary: This article summarizes the importance and advantages of anaerobic digestion (AD) processes in the treatment of industrial organic wastewater, and introduces some advanced AD processes. AD processes are optimized through enhancement strategies to improve wastewater treatment and energy recovery. The combination of anaerobic ammonia oxidation (Anammox) with AD processes is introduced as a feasible solution for carbon-neutral wastewater treatment. In addition, the integration of AD processes with other bio-processes is proposed for low-carbon treatment in the future.
ENVIRONMENTAL RESEARCH
(2024)
Article
Agricultural Engineering
Tian Xing, Sining Yun, Bingjie Li, Kaijun Wang, Jiageng Chen, Bo Jia, Teng Ke, Jinhang An
Summary: This study enhanced the anaerobic co-digestion of cow manure and aloe peel waste using MECs and CBC accelerant, resulting in higher biogas production and COD removal rate. The digestates showed potential utilization and high nutrient content. These improvements were attributed to the excellent performance of MECs and CBC accelerant.
BIORESOURCE TECHNOLOGY
(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)
Article
Engineering, Environmental
Fubin Yin, Shunli Wang, Wanqin Zhang, Qitao Cao, Tianjing Lian, Hongmin Dong
Summary: Sulfachloropyridazine (SCP), a commonly used antibiotic in livestock and poultry, has different effects on the growth of AD microorganisms and is degraded to varying degrees during their growth processes. The degradation pathways of SCP include hydroxylation, C-N bond cleavage, release of SO2, and nitration. These results highlight the importance of understanding antibiotic degradation pathways for improving the AD process.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Agricultural Engineering
Ruming Wang, Chunxing Li, Nan Lv, Xiaofang Pan, Guanjing Cai, Jing Ning, Gefu Zhu
Summary: The study evaluated the effects of activated carbon (AC) and nano-zero-valent iron (nZVI) on anaerobic digestion, finding that they increased acidogenesis and overall methane yield, respectively. Mechanism exploration showed that AC enriched specific bacteria to improve acid production, while nZVI buffered pH and enriched specific bacteria to utilize H2 and formic acid.
BIORESOURCE TECHNOLOGY
(2021)
Review
Agricultural Engineering
Wei Wang, Duu-Jong Lee
Summary: This mini-review updates the current researches on the potential role of DIET in enhancing performance for anaerobic digestion of organic substrates, highlighting the need for further studies to confirm the role of DIET and the importance of experimental observations with supplement of carbon materials.
BIORESOURCE TECHNOLOGY
(2021)
Article
Environmental Sciences
Ruirui Li, Dianlei Liu, Yuanhui Zhang, Giovana Tommaso, Buchun Si, Zhidan Liu, Na Duan
Summary: This paper investigates the continuous anaerobic digestion of hydrothermal liquefaction (HTL) wastewater and finds that the performance of the anaerobic process is significantly improved when pre-treated wastewater is added, and the produced methane contains 17.3% of the total carbon in the feedstock.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Biao Li, Jia-Dong Sun, Chen Tang, Zhi-Ying Yan, Jun Zhou, Xia-Yuan Wu, Hong-Hua Jia, Xiao-Yu Yong
Summary: In this study, a core-shell Fe@Co nanoparticles modified graphite felt was fabricated as the cathode by one-pot self-assembly strategy for the degradation of organic acids in the Bio-Electro-Fenton system, showing excellent electrochemical performance and catalytic reactivity.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Biao Li, Jia-Dong Sun, Chen Tang, Jun Zhou, Xia-Yuan Wu, Hong-Hua Jia, Ping Wei, Yi-Feng Zhang, Xiao-Yu Yong
Summary: Nanocatalyst-decorated EABs showed significantly enhanced power density under different environmental stresses, leading to differential alterations in their structure, composition, and viability. EABs with higher maturity exhibited better antishock ability and actively responded to strike a balance between self-protection and extracellular electron transfer under environmental pressure. These findings contribute to a broader understanding of microbe-electrode interactions and enhance their performance in sustainable remediation and new-energy development.
Article
Biotechnology & Applied Microbiology
Jia-Dong Sun, Chen Tang, Jun Zhou, Ping Wei, Ya-Jun Wang, Wei An, Zhi-Ying Yan, Xiao-Yu Yong
Summary: The study evaluated xylose/glucose mixture and corncob hydrolysate as alternatives for gamma-PGA production, finding a diauxic growth pattern of glucose and xylose in B. amyloliquefaciens C1, with enhanced araE transcription alleviating the xylose transport bottleneck. When cultured in a mixed medium, xylR expression was sharply induced, ultimately achieving green production of gamma-PGA from lignocellulosic biomass.
Article
Energy & Fuels
Mengyao Wang, Gaihong Wang, Lina Qian, Xiaoyu Yong, Yajun Wang, Wei An, Honghua Jia, Jun Zhou
Summary: Modified biochars prepared from biogas residues showed increased adsorption capacity for NH4+-N and COD, with the chicken manure biogas residue biochar exhibiting the highest absorption rates. FeCl3 modification further enhanced the adsorption properties, indicating potential applications for biogas slurry treatment and recycling.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Article
Agricultural Engineering
Yongdi Liu, Yulei Qian, Xiaoyu Yong, Honghua Jia, Ping Wei, Jun Zhou
Summary: The addition of granular activated carbon and increasing the temperature were found to significantly reduce the viscosity of the anaerobic digestion system, leading to improved methane production efficiency.
BIORESOURCE TECHNOLOGY
(2021)
Article
Agricultural Engineering
Yinchao Li, Jun Ma, Xiaoyu Yong, Liwen Luo, Jonathan W. C. Wong, Yabing Zhang, Hao Wu, Jun Zhou
Summary: The study demonstrated that the addition of biochar can significantly reduce the levels of ammonia, hydrogen sulfide, and volatile organic compounds in poultry manure compost, while also decreasing the nitrogen loss rate and promoting organic matter decomposition. The application of biochar can also improve the microbial composition and enhance the activity of certain nitrogen-cycling microorganisms.
BIORESOURCE TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Leizhen Lu, Jun Yang, Gaihong Wang, Xiaoyu Yong, Yabing Zhang, Jun Zhou, Cheng Qin, Jishuang Chen
Summary: Biological desulfurization using Acidithiobacillus ferrooxidans ZJ-2 strain immobilized on carbon felt modified with graphene oxide and polyaniline was investigated. The results showed that graphene oxide modification promoted microbial growth and oxidation ability, while polyaniline modification inhibited microbial growth. This study provides a novel immobilized carrier for biogas desulfurization.
JOURNAL OF BIOMEDICAL NANOTECHNOLOGY
(2022)
Article
Engineering, Chemical
Gaihong Wang, Lina Qian, Xiaoyu Yong, Yajun Wang, Wei An, Honghua Jia, Jun Zhou
Summary: This study successfully used Fe-BC-Cu filler synthesized from waste Lycium barbarum L. branches to treat oil refinery water, achieving maximum COD and TOC removal efficiency of 77.11% and 68.71% respectively under optimal conditions of initial wastewater pH of 4.0, Fe-BC ratio of 1:1, and Fe-BC-Cu ratio of 1:1:1. Reusability tests showed that the COD removal efficiency remained at around 80% over 10 cycles. Heavy metal analysis of the effluent indicated no risk of heavy metal release, and the micro-electrolysis filler showed extraordinary potential for industrial applications.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Physical
Biao Li, Xiaolong Cheng, Rusen Zou, Xiaoyu Yong, Chengfang Pang, Yanyan Su, Yifeng Zhang
Summary: The study moderated the Fe sites on carbon nitride to achieve a combination of single atoms and clusters, which enhanced catalytic activity. The research revealed that excessive exposure of the catalyst at high pH may damage the surface environment and inhibit H2O2 activation.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Environmental Sciences
Jun Ma, Dan Li, Xiaoyu Yong, Xueying Zhang, Su Yan, Jiayang Liu, Jun Zhou
Summary: In this study, a hollow cylindrical Fe-Cu-Ce-Mn/Al2O3 catalyst was prepared using the step impregnation method to address the challenges of low catalytic efficiency, insufficient catalyst strength, and poor ozone circulation in the advanced treatment of secondary wastewater. The step impregnation method resulted in a more uniform and compact distribution of each metal element, leading to the synergistic effect of various metals and increased mineralization rate of organic matter. The hollow cylindrical design of the catalyst ensured its strength and ozone circulation. The experimental results showed that the catalyst effectively reduced chemical oxygen demand (COD) in wastewater, and improved its biodegradability and mineralization rate by removing organic matter and converting refractory organic matter into easily degradable organic matter.
ENVIRONMENTAL TECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
Xiao-Long Cheng, Qiang Xu, Jia-Dong Sun, Chun-Rui Li, Qian-Wen Yang, Biao Li, Xue-Ying Zhang, Jun Zhou, Xiao-Yu Yong
Summary: Quorum sensing signals have significant effects on the performance of EABs in bioelectrochemical systems, enhancing voltage output and antibiotic degradation. Furthermore, the signals also play a role in balancing self-protection and electron transfer through the distribution of EPS.
Article
Engineering, Chemical
Gaihong Wang, Xiaoyu Yong, Liwen Luo, Su Yan, Jonathan W. C. Wong, Jun Zhou
Summary: Biochars are efficient and low-cost adsorbents for removing antibiotics from water. The adsorption performance is influenced by the physical properties, morphology, and functional groups of the biochars. To enhance the adsorption rate and capacity, it is crucial to regulate the ratio of microporous and mesoporous pores of biochars.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Environmental Sciences
Xiao-Long Cheng, Qiang Xu, Qian-Wen Yang, Rui-Rui Tian, Biao Li, Su Yan, Xue-Ying Zhang, Jun Zhou, Xiao-Yu Yong
Summary: This study successfully synthesized Fe@CN nanoparticles and prepared Fe@CN carbon paper anode, which has a higher electrochemically active surface area and achieved higher voltage output and longer stable output in MFCs. The study also found that the regulation of the protein to polysaccharide ratio in the electroactive biofilms on Fe@CN anode is important for the balance between electron transfer and cell protection under harsh environments.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Su Yan, Mengyao Wang, Sicheng Zhang, Zhenye Tong, Siqin Li, Xiaoyu Yong, Xueying Zhang, Jun Zhou
Summary: This study demonstrated the effectiveness of adding Fe-doped hydrochar (Fe-HC) in anaerobic co-digestion (co-AD) system to enhance the removal of pharmaceuticals and personal care products (PPCPs) and methane production. Fe-HC was found to have good electrochemical activity and was porous, which promoted inter-species electron transfer. By adding Fe-HC, the hydrolysis, acidogenesis, acetogenesis, and methanogenesis processes in co-AD system were enhanced, leading to improved PPCPs removal and methane production. The presence of Fe-HC also influenced the microbial community, increasing its diversity and promoting the growth of methanogens. Addition of Fe-HC enhanced the relationship between syntrophic bacteria and methanogens. Overall, this study showed that Fe-HC improved both PPCPs removal and methane production by enhancing metabolic activities of microbial communities.
CHEMICAL ENGINEERING JOURNAL
(2023)