Article
Environmental Sciences
Zhenzhen Teng, Yu Zhen, Zhigang Yu, Tiezhu Mi, Tao Cai
Summary: In this study, the community structure and function of denitrifying and anammox microorganisms in the sediments of the Yangtze Estuary and its adjacent sea were analyzed using high-throughput sequencing, qPCR, and isotope techniques. The results showed that denitrification was the dominant contributor to nitrogen removal processes, and sediment Chla was a key factor regulating the rates of denitrification and anammox.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Engineering, Environmental
Yun Li, Nan Cui, Keng Xuan, Dan Xu, Dongliang Wang, Chaoming Li, Zebing Li, Yufan Wang
Summary: This study evaluated the start-up performance and process kinetics of a UASB-Anammox reactor with nitritation sludge at low substrate concentration. It was found that the reactor could be successfully started by inoculating with a mixture of nitritation sludge and anaerobic ammonium oxidation granular sludge, achieving good nitrogen removal. The analysis using microbial growth kinetics models and process kinetics provided useful parameters for predicting nitrogen removal performance, operation management, and control of similar reactors.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Agricultural Engineering
Binjuan Li, Yi Wang, Wenhuai Wang, Xiaozhong Huang, Xiaomei Kou, Shizhang Wu, Tian Shao
Summary: By shortening the hydraulic retention time, it is possible to effectively restart the continuous biofilter anammox reactor and efficiently remove low-concentration nitrogen wastewater.
BIORESOURCE TECHNOLOGY
(2021)
Article
Environmental Sciences
Moonil Kim, Fenghao Cui
Summary: This study used 16S rRNA gene pyrosequencing to identify bacterial communities in wastewater and investigate the evolution of bacterial communities in the Anammox process. Four lab-scale Anammox reactors inoculated with different types of wastewater treatment sludge were operated under identical conditions for over 400 days. The study found that the presence of the Nitrospira genus and symbiotic association with other functional groups can lead to successful nitrogen removal in the Anammox process.
Article
Parasitology
Wen-Xiang Lv, Peng Cheng, Jing-Jing Lei, Hui Peng, Chuan-Hui Zang, Zi-Wei Lou, Hong-Mei Liu, Xiu-Xia Guo, Hai-Yang Wang, Hai-Fang Wang, Chong-Xing Zhang, Li-Juan Liu, Mao-Qing Gong
Summary: This study investigated the gut microflora and gene expression levels in Culex pipiens pallens under low-temperature stress. It was found that low-temperature stress decreased the survival time of Cx. pipiens pallens and affected the diversity of gut microflora. Furthermore, a significant correlation between gut microflora and gene expression was observed.
PARASITES & VECTORS
(2023)
Article
Gastroenterology & Hepatology
Daisuke Suga, Hiroki Mizutani, Shunsuke Fukui, Mayu Kobayashi, Yasuaki Shimada, Yuuichi Nakazawa, Yuuki Nishiura, Yuuya Kawasaki, Isao Moritani, Yutaka Yamanaka, Hidekazu Inoue, Eiki Ojima, Yasuhiko Mohri, Hayato Nakagawa, Kaoru Dohi, Kei Takaba, Hideo Wada, Katsuya Shiraki
Summary: The study revealed significant differences in gut microbial composition between patients with right-sided colon cancer and sigmoid colon cancer, as well as between patients who underwent right hemicolectomy and sigmoidectomy, indicating a potential impact on clinical manifestations.
BMC GASTROENTEROLOGY
(2022)
Article
Microbiology
Gabriel G. T. N. Monteiro, Dayane J. Barros, Gabriele V. M. Gabriel, Andressa M. Venturini, Tomas G. R. Veloso, Gisele H. Vazquez, Luciana C. Oliveira, Vania Neu, Paul L. E. Bodelier, Cleber Fernando M. Mansano, Siu M. Tsai, Acacio A. Navarrete
Summary: The study investigated the composition of microbial communities involved in ammonium and nitrite/nitrate-dependent methane oxidation in Amazonian floodplain soils, as well as the influence of environmental and geochemical factors on these communities.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Engineering, Environmental
Liming Chen, Bixi Zhao, Xiang Li, Zhanwen Cheng, Ren 'an Wu, Yu Xia
Summary: The study proposes a method to isolate and characterize translationally active and inactive fractions of anammox consortia using bioorthogonal non-canonical amino acid tagging (BONCAT), fluorescence activated cell sorting (FACS), and 16S rRNA gene sequencing methods. The relative abundance of translationally active taxa obtained by BONCAT correlates well with measurements from RNA-based methods. The study reveals significant translational heterogeneity within anammox consortia and identifies a surprisingly high proportion of translationally inactive cells in suitable habitats.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Rongfen Chen, Shenbin Cao, Liang Zhang, Yan Zhou
Summary: Integrating MABR with Anammox can further reduce energy consumption in wastewater treatment facilities. This study investigated selective NOB suppression strategies in MABR under low pressure. The results showed that higher ammonium loading could quickly suppress emergent NOB activity, while lowering aeration pressure reversed nitrite oxidizing activities. Cultivating partial nitritation biofilm under zero positive pressure slowed down NOB growth and induced self-induced anammox activities.
Article
Environmental Sciences
Yongxing Chen, Haochuan Chen, Zhenguo Chen, Haolin Hu, Cuilan Deng, Xiaojun Wang
Summary: A novel two-stage partial nitritation-anammox process was investigated to achieve high efficiency and save operational costs for high-concentration urea wastewater treatment. The results showed that intracellular hydrolysis and persistent free ammonia inhibition on nitrite-oxidizing bacteria were key mechanisms for efficient urea removal and stable nitrogen removal. The proposed process demonstrated promising potential for sustainable development in the urea industry.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Agricultural Engineering
Xuanye Bai, Michelle M. McKnight, Josh D. Neufeld, Wayne J. Parker
Summary: A lab-scale sequencing batch reactor was used to study SNDPR in treating municipal wastewater at low temperature. The anaerobic/aerobic configuration was not effective for real wastewater, but incorporating a post-anoxic phase significantly improved nitrogen and phosphorus removal rates. Activity tests showed that denitrifying phosphorus accumulating organisms and heterotrophs played important roles in nitrogen removal. 16S rRNA gene analysis indicated a high abundance of phosphorus accumulating organisms in the system. Overall, the post-anoxic phase was essential for maintaining SNDPR at low temperatures.
BIORESOURCE TECHNOLOGY
(2023)
Article
Engineering, Environmental
Huihui Cui, Liang Zhang, Qiong Zhang, Xiyao Li, Yongzhen Peng
Summary: This study found that comammox bacteria, which were previously overlooked, are the most important ammonia-oxidizing microbes in Anammox systems, and play a significant role in nitrogen removal.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Wenqiang Wang, Dong Li, Shuai Li, Huiping Zeng, Jie Zhang
Summary: Hollow Anammox granular sludge is found to be effective in treating low-strength ammonia wastewater, with Candidatus Kuenenia as the dominant bacteria living within extracellular polymeric substance (EPS) shield. The formation of hollow granules involves cavitation and specific Anammox activity.EPS secretion is related to the specific Anammox activity and tryptophan or protein-like components are crucial in EPS formation within the granules.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Chunhua He, Xuesong Ren, Guoqing Xu, Zhiqiang Huang, Yulan Wang, Zhenhu Hu, Wei Wang
Summary: Phenol and ammonia are common pollutants in industrial wastewaters. The study successfully started and operated a single-stage partial nitritation /anammox reactor treating phenol-ammonia wastewater, achieving total nitrogen and COD removal efficiencies of around 73.0% and 79.5%. The anammox bacteria adapted to phenol condition and remained stable activity after 60 days of operation.
WATER ENVIRONMENT RESEARCH
(2021)
Article
Green & Sustainable Science & Technology
Eka Sunarwidhi Prasedya, Nanda Sofian Hadi Kurniawan, Fitriani Fitriani, Putu Bella Aprillia Saraswati, Wanda Qoriasmadillah, Bq Tri Khairina Ilhami, Ari Hernawan, Sri Widyastuti
Summary: The frequent use of chemical fertilizers in agriculture has become an urgent environmental concern. This study investigates the potential of seaweed fertilizer as an alternative to chemical fertilizers. The findings show that seaweed fertilizer enhances plant growth and soil beneficial microbiota, increases the availability of macronutrients in the soil, and enriches functional genes and proteins related to metabolism. These findings improve our understanding of the importance of microbial community for soil quality and demonstrate the positive impact of seaweed supplementation on soil fertility and rice plant growth.
Article
Engineering, Environmental
Xiaobin Tang, Wouter Pronk, An Ding, Xiaoxiang Cheng, Jinlong Wang, Binghan Xie, Guibai Li, Heng Liang
CHEMICAL ENGINEERING JOURNAL
(2018)
Article
Environmental Sciences
Xinsheng Luo, Heng Liang, Fangshu Qu, An Ding, Xiaoxiang Cheng, Chuyang Y. Tang, Guibai Li
Article
Environmental Sciences
An Ding, Jinlong Wang, Dachao Lin, Rong Zeng, Shengping Yu, Zhendong Gan, Nanqi Ren, Guibai Li, Heng Liang
Article
Green & Sustainable Science & Technology
Xiaobin Tang, An Ding, Wouter Pronk, Christopher Ziemba, Xiaoxiang Cheng, Jinlong Wang, Jiajian Xing, Binghan Xie, Guibai Li, Heng Liang
JOURNAL OF CLEANER PRODUCTION
(2018)
Article
Environmental Sciences
Xiaobin Tang, Xiaoxiang Cheng, Xuewu Zhu, Binghan Xie, Yuanqing Guo, Jinlong Wang, An Ding, Guibai Li, Heng Liang
Article
Environmental Sciences
Jinna Feng, Zhiquan Yang, Shan He, Xiaojun Niu, Taiping Zhang, An Ding, Heng Liang, Xiaochi Feng
Article
Engineering, Environmental
Langming Bai, Yatao Liu, Nathan Bossa, An Ding, Nanqi Ren, Guibai Li, Heng Liang, Mark R. Wiesner
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2018)
Article
Environmental Sciences
An Ding, Dachao Lin, Yingxue Zhao, Huu Hao Ngo, Wenshan Guo, Langming Bai, Xinsheng Luo, Guibai Li, Nanqi Ren, Heng Liang
SCIENCE OF THE TOTAL ENVIRONMENT
(2019)
Article
Environmental Sciences
Shaodong Guo, Heng Liang, Langming Bai, Fangshu Qu, An Ding, Bin Ji, Xun Wang, Guibai Li
Article
Engineering, Environmental
Langming Bai, Yatao Liu, An Ding, Nanqi Ren, Guibai Li, Heng Liang
CHEMICAL ENGINEERING JOURNAL
(2019)
Article
Environmental Sciences
Langming Bai, Yatao Liu, An Ding, Nanqi Ren, Guibai Li, Heng Liang
Review
Engineering, Environmental
Wouter Pronk, An Ding, Eberhard Morgenroth, Nicolas Derlon, Peter Desmond, Michael Burkhardt, Bing Wu, Anthony G. Fane
Article
Environmental Sciences
Zhiquan Yang, Xiaowen Tong, Jinna Feng, Shan He, Mingli Fu, Xiaojun Niu, Taiping Zhang, Heng Liang, An Ding, Xiaochi Feng
Article
Environmental Sciences
Zhongsen Yan, Yuling Jiang, Lingshan Liu, Zhongsheng Li, Xiaolei Chen, Mingqian Xia, Gongduan Fan, An Ding
Summary: Water is an essential part of human life and production, with a growing demand for wastewater recycling due to the overexploitation of traditional water sources. Membrane distillation (MD) has been widely used in various wastewater treatments but faces challenges such as membrane fouling, membrane wetting, and high energy consumption. Strategies including coupling membrane processes and developing membranes with specific surface characteristics have been adopted to enhance MD performance.
Article
Environmental Sciences
Xiao Liu, Renglu Chen, Zijing Wang, Wei Lin, Rourou Zhang, Shengping Yu, An Ding
Summary: This study proposes a new method of Fe(II)-activated peroxymonosulfate (PMS) coagulation and a pre-oxidation system coupled with ultrafiltration (UF) to treat secondary effluent from sewage plants. The optimal effect of organic matter removal and membrane fouling mitigation was achieved at the Fe(II)/PMS dosage of 60/60 mu M/mu M (molar ratio 1:1), and the efficiency of pretreatment methods in removing organics and mitigating membrane fouling followed the order of Fe(II)/PMS > Fe(III) > inactivated PMS. Coagulation and pre-oxidation by Fe(II)/PMS significantly reduced the clogging of membrane pores and the proportion of irreversible resistance, effectively controlling membrane fouling and improving effluent quality.
