Article
Agricultural Engineering
Achiraya Jiraprasertwong, Pattaratorn Karnchanapaisal, Kessara Seneesrisakul, Pramoch Rangsunvigit, Sumaeth Chavadej
Summary: The study found that for treating ethanol wastewater using a two-phase UASB system, the optimal OLR was 32 kg m-3 d-1, resulting in high process activity and effectiveness. Sludge granulation was found to be beneficial for system operation and wastewater treatment efficiency. Additionally, factors such as pH value and lactic acid content were found to play important roles in granulation in the system.
BIOMASS & BIOENERGY
(2021)
Article
Environmental Sciences
Lingjiao Kong, Xianyang Shi
Summary: This study investigated the effects of three antibiotic mixtures on the performance, SMPs composition, and microbial community of UASBs. The results showed that antibiotic mixtures decreased the chemical oxygen demand removal efficiency and biogas content of the reactors, and influenced the composition and fluorescence intensity of SMPs. Moreover, antibiotics also had a significant impact on the microbial community structure.
Article
Engineering, Environmental
A. Aishwarya Lakshmi, S. Sadarajan
Summary: This study investigates the potential of locust bean gum (LBG) in accelerating the startup of a novel upflow anaerobic sludge blanket (UASB) reactor for municipal sewage treatment. The results show that the reactor with LBG as an additive achieved an accelerated startup in 40 days, with higher COD removal efficiency compared to a conventional system. This confirms the positive impact of LBG on reactor startup.
WATER SCIENCE AND TECHNOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Chandan Mahata, Suman Dhar, Subhabrata Ray, Debabrata Das
Summary: The performance of the upflow anaerobic sludge blanket (UASB) reactor for stable H2 production from starchy wastewater supplemented with groundnut de-oiled cake using mixed consortia was investigated in this study. Limited research on H2 production for UASB reactor has been reported. The operation of the UASB reactor was divided into start-up period and production period, with different hydraulic retention times (HRT) examined for H2 production. The maximum H2 production rate of 12.3 L L-1 d-1 was observed at 3 h HRT. Physicochemical characteristics of the granular sludge were studied, and advanced bio-kinetic models were implemented to analyze the substrate consumption on hydrogen production.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2023)
Review
Biotechnology & Applied Microbiology
Anwar Ahmad, Roomana Ghufran
Summary: This article reviews the application of anaerobic reactors for the degradation of organic compounds and biogas production. It discusses the use of closed anaerobic reactors to accelerate the degradation of volatile fatty acid-butyrate and increase methane production. The establishment of stable microbial biofilm and organic load in these reactors improves the performance and methane production.
CRITICAL REVIEWS IN BIOTECHNOLOGY
(2023)
Article
Agricultural Engineering
Kaili Ma, Zhiguo Cao, Yanrui Cui, Tingting Chen, Shijie Shan, Yuyang Shi, Wei Wang, Jinghua Lv
Summary: The addition of magnetite at different salinity levels enhances methane production in anaerobic digestion, increases granule formation, and promotes partnerships between hydrogenotrophic methanogens and syntrophic bacteria.
BIORESOURCE TECHNOLOGY
(2021)
Article
Agricultural Engineering
Jiang Wu, Bo Jiang, Zhe Kong, Chongyang Yang, Lu Li, Bo Feng, Zibin Luo, Kai-Qin Xu, Takuro Kobayashi, Yu-You Li
Summary: The study found that pre-acidification equipped UASB process showed better treatment performance and stability in handling starch wastewater compared to a one-stage UASB reactor, with improvements in substrate utilization diversity and microbial community structure stability. The core functional microbiota of Anaerolineaceae/Methanosaeta in the pre-acidification equipped UASB reactor exhibited superior acetogenic methanogenesis abilities. In contrast, the dominance of Methanobacterium, a hydrogenotrophic methanogen, in the archaeal community of the one-stage UASB reactor indicated a high hydrogen turn-over rate.
BIORESOURCE TECHNOLOGY
(2021)
Article
Green & Sustainable Science & Technology
Ayman M. Dohdoh, Ibrahim Hendy, Martina Zelenakova, Ahmed Abdo
Summary: This study evaluated and compared two integrated anaerobic-aerobic systems for wastewater treatment, showing that adding carrier-filling media significantly improved system performance and stability. The systems had high efficiency for organic and ammonia removal, with the hybrid UASB-IFAS system performing better than the conventional UASB-AS system. Increasing temperature also improved overall process efficiency for both systems, indicating temperature plays a significant role in the treatment process.
Article
Engineering, Environmental
Yiyang Yuan, Lei Zhang, Yingdi Zhang, Yang Liu
Summary: This study compared three different feeding strategies (continuous feeding, semi-continuous feeding, and alternate feeding) in UASB reactors and found that alternate feeding supported microbial development and had higher methane yield and COD removal efficiency compared to semi-continuous feeding.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
A. Aishwarya Lakshmi, S. Amal Raj
Summary: This study focuses on the potential of natural gum based polymers as additives to enhance the startup of UASB reactors treating municipal sewage. The results show that reactors with novel bio-flocculants LBG or GG as additives demonstrate accelerated startup and better biomass retention.
DESALINATION AND WATER TREATMENT
(2022)
Article
Agricultural Engineering
Chen Wang, Yang Liu, Caiqin Wang, Bo Xing, Shaodong Zhu, Jinjing Huang, Xiangyang Xu, Liang Zhu
Summary: The study found that the addition of biochar can effectively resist high organic loading shock, with rapid recovery of biogas production and maintenance of the balance between acidogenesis and methanogenesis in R1. Furthermore, the addition of biochar helped retain the structural stability of granular sludge in R1 under pressure, ensuring the stability of the anaerobic system.
BIORESOURCE TECHNOLOGY
(2021)
Article
Engineering, Environmental
Wanmai Srisuwanno, Krittiya Pornmai, Kessara Seneesrisakul, Achiraya Jiraprasertwong, Malinee Leethochawalit, Pramoch Rangsunvijit, Sumaeth Chavadej
Summary: This study aimed to enhance the methanogenic activity of distillery wastewater with high potassium (K) content using a mesophilic three-stage upflow anaerobic sludge blanket (UASB). The three-stage UASB could not function properly at a chemical oxygen demand (COD) loading rate greater than 3 kg/m3d due to potassium toxicity. However, by diluting the wastewater to reach moderate K toxicity, the three-stage UASB was able to effectively function at high COD loading rates due to the development of adapted anaerobe communities.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Agricultural Engineering
Jiahao Liang, Qinghong Wang, Jin Li, Shaohui Guo, Ming Ke, Mohamed Gamal El-Din, Chunmao Chen
Summary: The study found that AnGS technology is more efficient in treating flowback water under thermophilic conditions, achieving higher COD removal and methane production rates. The thermophilic condition enhances the hydrolysis of complex organics in the flowback water, resulting in better degradation of compounds.
BIORESOURCE TECHNOLOGY
(2021)
Article
Agricultural Engineering
Xiangchen Li, Rui Du, Jingwen Zhang, Shuying Wang, Yongzhen Peng
Summary: This study combined nitrogen conversion, granular characteristics, and microbial dynamics to reveal the longitudinal heterogeneity of anammox-UASB. It was found that the bottom zone had larger and more mineralized granules, while the middle zone had smaller and more active granules. By combining partial denitrification and anammox, the performance in the top zone was improved.
BIORESOURCE TECHNOLOGY
(2022)
Article
Acoustics
Fuhua Wang, Zezhuang Sun, Shi Xian, Wang Luyi, Zhang Weidong, Zhang Zhihao
Summary: An effective hybrid system was used to treat hydroxypropyl guar gum (HPG) in fracturing flowback fluid, achieving a COD removal rate of 81.15%. The optimal operating parameters for this system were determined through single-factor analysis, and intermediates were identified by GC-MS analysis. Results showed that the sono-Fenton system successfully reduced the COD value to within the marine sewage discharge standard, making it an efficient remediation process for fracturing flowback fluid.
ULTRASONICS SONOCHEMISTRY
(2023)
Article
Agricultural Engineering
Chunmao Chen, Jie Ming, Brandon A. Yoza, Jiahao Liang, Qing X. Li, Hongqiao Guo, Zhiyuan Lite, Jingmin Deng, Qinghong Wang
BIORESOURCE TECHNOLOGY
(2019)
Article
Agricultural Engineering
Jie Ming, Qinghong Wang, Brandon A. Yoza, Jiahao Liang, Hongqiao Guo, Jin Li, Shaohui Guo, Chunmao Chen
BIORESOURCE TECHNOLOGY
(2020)
Article
Agricultural Engineering
Jiahao Liang, Qinghong Wang, Brandon A. Yoza, Qing X. Li, Chunmao Chen, Jie Ming, Jingshi Yu, Jin Li, Ming Ke
BIORESOURCE TECHNOLOGY
(2020)
Article
Energy & Fuels
Tsutomu Uchida, Ike Nagamine, Itsuka Yabe, Tatsunori Fukumaki, Ai Oyama, Brandon Yoza, Norio Tenma, Stephen M. Masutani
Article
Agricultural Engineering
Jiahao Liang, Qinghong Wang, Qing X. Li, Liangyan Jiang, Jiawen Kong, Ming Ke, Muhammad Arslan, Mohamed Gamal El-Din, Chunmao Chen
BIORESOURCE TECHNOLOGY
(2020)
Article
Environmental Sciences
Qinghong Wang, Jiahao Liang, Simin Zhang, Brandon A. Yoza, Qing X. Li, Yali Zhan, Huangfan Ye, Peng Zhao, Chunmao Chen
ENVIRONMENTAL RESEARCH
(2020)
Article
Energy & Fuels
Xin Wang, Jie Ming, Chun-Mao Chen, Brandon A. Yoza, Qian-Wei Li, Jia-Hao Liang, Geoffrey Michael Gadd, Qing-Hong Wang
Article
Materials Science, Multidisciplinary
Xiaoqing Chen, Youchen Zhang, Jiahao Liang, Haoyi Li, Mingjun Chen, Lisheng Cheng, Xuetao He, Weimin Yang
Summary: A novel electrospinning technique based on standing wave vibration of a string was developed for preparation of high-quality nanofibers with low applied voltage. The results showed competitive fiber diameter and productivity compared to traditional needle electrospinning. Standing wave electrospinning demonstrated considerable potential for fine nanofiber preparation under low applied voltage.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Agricultural Engineering
Jiahao Liang, Qinghong Wang, Jin Li, Shaohui Guo, Ming Ke, Mohamed Gamal El-Din, Chunmao Chen
Summary: The study found that AnGS technology is more efficient in treating flowback water under thermophilic conditions, achieving higher COD removal and methane production rates. The thermophilic condition enhances the hydrolysis of complex organics in the flowback water, resulting in better degradation of compounds.
BIORESOURCE TECHNOLOGY
(2021)
Article
Environmental Sciences
Jin Li, Qinghong Wang, Jiahao Liang, Huimin Li, Shaohui Guo, Mohamed Gamal El-Din, Chunmao Chen
Summary: The study demonstrates that using refinery spent caustic for disintegration of refinery waste activated sludge can greatly enhance methane production, providing a new and environmentally friendly approach for treating refinery wastewater.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Biotechnology & Applied Microbiology
K. Sabate, S. Masutani, B. Yoza
Summary: The study suggests that macroalgae are suitable for agricultural use to enrich soil with carbon, nitrogen, and phosphate, containing complex polysaccharides and sulfated polysaccharides with diverse sugar compositions. The process of algae degradation remains unclear, but microbiological community analysis shows marine origins and potential algae degradation metabolisms in the algae waste biomass.
JOURNAL OF APPLIED PHYCOLOGY
(2021)
Article
Agricultural Engineering
Qinghong Wang, Liangyan Jiang, Hao Niu, Jiahao Liang, Zhiyuan Liu, Muhammad Arslan, Mohamed Gamal El-Din, Chunmao Chen
Summary: The addition of humic-rich natural materials, peat soil and lignite, in UASB bioreactors showed different effects on phenol degradation and reactor stability. Peat soil improved phenol degradation and reactor stability, while lignite displayed poor phenol degradation.
BIORESOURCE TECHNOLOGY
(2021)
Article
Energy & Fuels
Richard B. Coffin, Gareth Crutchley, Ingo Pecher, Brandon Yoza, Thomas J. Boyd, Joshu Mountjoy
Summary: We compared sediment vertical methane flux off the Mahia Peninsula using a combination of geochemical, multichannel seismic and sub-bottom profiler data. Methane concentrations and vertical flux varied considerably across stations. Methane profiles correlated well with seismic and TOPAS data in Mahia, but not in the control site. This suggests a potential underestimation of gas hydrate volumes based on standard seismic data interpretations.
Article
Environmental Sciences
Baichun Wu, Jingmin Deng, Hao Niu, Jiahao Liang, Muhammad Arslan, Mohamed Gamal El-Din, Qinghong Wang, Shaohui Guo, Chunmao Chen
Summary: This study established a bacterial consortium through experimental and mathematical methods for effective degradation of heavy oil constituents. The combination of different bacterial strains influenced the synergistic interactions and degradation efficiency of the consortium.
Article
Agricultural Engineering
Qinghong Wang, Jiawen Kong, Jiahao Liang, Mohamed Gamal El-Din, Peng Zhao, Wenyu Xie, Chunmao Chen
Summary: The bioaugmentation potential of aerobic granular sludge (AGS) was explored for improved nitrogen removal in petroleum wastewater treatment. A highly efficient heterotrophic nitrification-aerobic denitrification (HN-AD) bacterial consortium was constructed and used to bioaugment the AGS, resulting in enhanced nitrogen removal. The addition of the immobilized consortium facilitated the formation of larger AGS particles and increased the gene abundance related to heterotrophic nitrification.
BIORESOURCE TECHNOLOGY
(2022)
