Article
Biotechnology & Applied Microbiology
Jing Lu, Yiguo Hong, Ying Wei, Ji-Dong Gu, Jiapeng Wu, Yu Wang, Fei Ye, Jih-Gaw Lin
Summary: The study analyzed the rates of ammonia oxidation (AO) and nitrite oxidation (NO) in the activated sludge from Xinfeng WWTPs, revealing strong activity of both processes. The research also identified AOB and Nitrospira as the main catalysts for nitrification in anammox-inoculated WWTPs, leading to efficient nitrogen removal.
Article
Biodiversity Conservation
Weifang Hu, Mianrun Chen, Xue Lan, Guoliang Li, Bin Wang, Dong Yao Sun, Xianbiao Lin
Summary: This study found significant shifts in potential ammonia oxidation rates (PARs) and gene abundances of ammonia-oxidizing bacteria (AOB) and ammonia-oxidizing archaea (AOA) along different salinity gradients. The PARs were higher under high salinity conditions, and the AOB gene abundance was greater than AOA under moderate and high salinity. This has important implications for nitrogen cycling in estuarine sediments.
ECOLOGICAL INDICATORS
(2022)
Article
Environmental Sciences
Jiajie Hu, Yuxiang Zhao, Xiangwu Yao, Jiaqi Wang, Ping Zheng, Chuanwu Xi, Baolan Hu
Summary: The study revealed the significant role of comammox Nitrospira in soil nitrification, especially in acid soils, showing a positive correlation between their abundance and nitrification potential, dominating in most soil samples.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Dongdan Yuan, Lei Zheng, Yong-Xin Liu, Hongguang Cheng, Aizhong Ding, Xiaomin Wang, Qiuyang Tan, Xue Wang, Yuzi Xing, En Xie, Haoming Wu, Shanyun Wang, Guibing Zhu
Summary: Through the use of double tracer technique and metagenomic sequencing, we found that the production of N2O in plateau wetlands is promoted by nitrifier denitrification, with the key functional genes belonging to comammox bacteria Nitrospira nitrificans. The comammox bacterial species N. nitrificans and ammonia oxidizing bacterial species Nitrosomonas europaea cooperate to produce N2O in plateau wetland sediments. Environmental factors such as elevation and total organic matter influence the cooperation pattern via N. nitrificans, thus affecting N2O production activity in plateau wetland sediments.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Ben Ma, Timothy M. LaPara, Taegyu Kim, Raymond M. Hozalski
Summary: This study investigated the abundance and composition of ammonia-oxidizing microorganisms (AOMs) in full-scale and pilot-scale biofilters. The results showed that AOB had the highest relative abundance, followed by comammox Nitrospira and AOA. The abundance of AOB in the pilot-scale biofilters was influenced by influent ammonia concentration and temperature, while AOA and comammox Nitrospira were not correlated with these parameters. The biofilters affected AOM abundance but had a minor influence on the composition of AOB and Nitrospira sublineage II communities.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Soil Science
Haiyang Liu, Shengnan Zhang, Wei Xu, Hongen Liu, Jiangye Li, Jizheng He, Wenfeng Tan
Summary: The discovery of complete ammonia oxidizers has revolutionized our understanding of two-step nitrification. Previous studies have suggested that these organisms may outcompete canonical ammonia oxidizers under ammonia-limited conditions. However, there is currently no convincing evidence linking their activity to nitrification in acidic soils.
BIOLOGY AND FERTILITY OF SOILS
(2023)
Article
Environmental Sciences
Yujie Dai, Xiaolan Lin, Yi Luo, Jing Sun, Yun Tian
Summary: This study investigated the responses and relative contributions of ammonia-oxidizing archaea (AOA), ammonia-oxidizing bacteria (AOB), anaerobic ammonium oxidizing (anammox) bacteria, and denitrifying bacteria in mangrove sediments after spiking urea. The results indicated that nitrification (primarily mediated by AOA)-denitrification process played the most important role in nitrogen removal from the amendment of nitrogen short-term input in the mangrove sediments.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Biodiversity Conservation
Manman Chen, Hong Pan, Mingjie Sun, Wei He, Meng Wei, Yanhong Lou, Hui Wang, Quangang Yang, Haojie Feng, Yuping Zhuge
Summary: Organic fertilizer application increased N2O emissions from nitrification, dominated by the Nitrosospira cluster 3 lineage of AOB, while chemical N fertilizer stimulated N2O production from denitrification, dominated by the nirK lineage of Rhizobiales. The study highlights the different effects of organic and chemical fertilizers on N2O microbial emission pathways in agricultural soils.
ECOLOGICAL INDICATORS
(2021)
Article
Engineering, Environmental
Bingbing Ma, Xiaojing Zhang, Aihua Gao, Chuang Ma, Yulin Hou, Zirui Zhao, Hao Hu
Summary: The CANON process was utilized for treating composting wastewater, resulting in decreased ammonia levels and increased total nitrogen removal rate. Microorganisms secreted more extracellular polymeric substances to counteract cell damage caused by harmful substances, maintaining system stability.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Lingfeng Wang, Shuang Qiu, Jianhua Guo, Shijian Ge
Summary: Nitritation can be rapidly initiated using light irradiation, promoting the activity and growth of ammonia-oxidizing bacteria while suppressing nitrite-oxidizing bacteria. Optimal light energy densities can lead to high nitrite accumulation ratios, converting ammonia to nitrate. Additionally, light irradiation induces different responses of AOB and NOB, optimizing microbial structure while ensuring AOB predominance and stable nitritation.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Environmental
Helin Wang, Ping Li, Xiaohan Liu, Jing Zhang, Lisa Y. Stein, Ji-Dong Gu
Summary: This study investigated the influence of reactive oxygen species (ROS) on ammonia-oxidizing microorganisms (AOMs) in redox-fluctuating aquifers through field investigation and in-lab verification. The results showed that ROS played an important role in regulating AOMs, with ammonia-oxidizing archaea dominating in aquifers with lower ROS levels, and ammonia-oxidizing bacteria and heterotrophic nitrifying aerobic bacteria predominating in areas with higher ROS levels.
Article
Engineering, Environmental
Mingzhu Yang, Shuang Qiu, Lingfeng Wang, Zhipeng Chen, Yanbing Hu, Jianhua Guo, Shijian Ge
Summary: This study investigated the effects of light irradiation on the activities and physiological characteristics of ammonia-oxidizing bacteria and nitrite-oxidizing bacteria in activated sludge. The results showed that moderate light irradiation could enhance the activity of ammonia-oxidizing bacteria, while excessive light could inhibit the activities of both types of bacteria. These findings contribute to our understanding of the physiological responses of nitrifiers to short-term light irradiation and have implications for the development of sustainable wastewater treatment technologies.
Article
Biodiversity Conservation
Di Liang, G. Philip Robertson
Summary: The long-term contribution of nitrification to nitrous oxide (N2O) emissions as well as the proportion of N2O derived from nitrification in different ecosystems remains uncertain, with actual values likely to be lower than estimated due to low N2O yields in cultured nitrifiers and competing sinks for available NH4+.
GLOBAL CHANGE BIOLOGY
(2021)
Article
Soil Science
Konrad Egenolf, Philipp Schad, Ashly Arevalo, Daniel Villegas, Jacobo Arango, Hannes Karwat, Georg Cadisch, Frank Rasche
Summary: Brachiaria humidicola (syn. Urochloa humidicola) has been recognized for controlling soil nitrification through releasing nitrification inhibitors (NI), termed as biological nitrification inhibition (BNI), which can reduce net nitrification rates by 50 to 85%. Adjustment of soil pH and microbial background has little influence on BNI performance, while the decrease in net nitrification rates mainly depends on microbial N immobilization and efficient plant N uptake.
BIOLOGY AND FERTILITY OF SOILS
(2022)
Article
Environmental Sciences
Qianxia Li, Cuina Bu, Hafz Adeel Ahmad, Christophe Guimbaud, Baoyu Gao, Zhuangming Qiao, Shaowu Ding, Shou-Qing Ni
Summary: The study found that the abundance of DNRA bacteria in multistage constructed wetlands is negatively correlated with environmental factors and positively correlated with the efficiency of nitrate removal.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Organic
Juan Hou, Tian Li
POLYCYCLIC AROMATIC COMPOUNDS
(2020)
Article
Engineering, Environmental
Tian Li, Yunlu Zhang, Bo Gui, Kuo Gao, Qingqing Zhao, Ruixin Qu, Tuodong Liu, Michael Hoffmann, Christian Staaks, Bingzhi Dong
WATER ENVIRONMENT RESEARCH
(2020)
Article
Green & Sustainable Science & Technology
Yong Liu, Tian Li, Long Yu
JOURNAL OF CLEANER PRODUCTION
(2020)
Article
Environmental Sciences
Duanyang Qiu, Hangyu Peng, Tian Li, Yue Qi
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Engineering, Environmental
Lin Wang, Tian Li, Huaqiang Chu, Wanzhu Zhang, Weiwei Huang, Bingzhi Dong, Daoji Wu, Feiyong Chen
Summary: The study found that FO membrane has efficient removal rates for natural DOM, but calcium ion concentration has a more severe impact on fouling flux. The concentrated feed solution has a more significant effect on fouling flux decline for natural DOM containing more small molecules. Additionally, fouling in the AL-facing-DS orientation can be compensated by reducing internal concentration polarization level.
Article
Engineering, Chemical
Junxia Liu, Yaqian Fan, Yuhui Sun, Zhihong Wang, Dongsheng Zhao, Tian Li, Bingzhi Dong, Chuyang Y. Tang
Summary: The model predicts that severe fouling occurs at low ζ(2) values, and increasing ζ(2) can significantly reduce the membrane fouling rate. The role of contact angle θ is critical, as fouling is dramatically reduced when θ is below (or above) a certain threshold value.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
Kuo Gao, Tian Li, Qingqing Zhao, Wan Liu, Junxia Liu, Yali Song, Huaqiang Chu, Bingzhi Dong
Summary: This study comprehensively examined the UF fouling behavior of EOMs from three typical algae species in both mono-culture and co-culture conditions. The results showed that the UF performance was significantly affected by certain substances in the EOMs, and the co-cultures displayed unique promotion and inhibition characteristics. Additionally, the membrane filtration behavior varied among different algae combinations, with some combinations leading to more serious fouling than others.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Environmental
Huaqiang Chu, Xiaoqian Liu, Jiaying Ma, Tian Li, Haifeng Fan, Xuefei Zhou, Yalei Zhang, Enchao Li, Xiwang Zhang
Summary: A full-scale coking wastewater treatment plant with a two-stage anoxic-oxic-anoxic-oxic (A1/O1/A2/O2) process was systematically investigated, showing excellent removal capacity for COD, ammonia, nitrate, and total nitrogen. The microbial community analysis revealed significant changes in bacterial communities during the AOAO process, with shifts in functional microorganisms responsible for organics and nitrogen removal. Metagenomic sequencing also indicated variations in amino acid and carbohydrate metabolism between the primary and secondary AO processes.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Yue Qi, Yong Liu, Duan-yang Qiu, Tian Li
Summary: Coconut shell and bamboo biochar added to permeable pavements can improve nitrogen removal efficiency, especially for innovative designs that increase rainwater evaporation. Higher rainfall intensity and temperatures can enhance the effects of biochar on nitrogen removal, without leaching organic matter.
WATER SCIENCE AND TECHNOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Hongjian Yu, Weipeng Huang, Huachen Liu, Tian Li, Nianping Chi, Huaqiang Chu, Bingzhi Dong
Summary: The combination of coagulation and membrane rotation can effectively reduce membrane fouling and improve organic removal in drinking water treatment. However, excessive shear stress may lead to membrane breakage, emphasizing the importance of proper control in the process.
Article
Biochemistry & Molecular Biology
Yan Chen, Huiping Li, Weihai Pang, Baiqin Zhou, Tian Li, Jian Zhang, Bingzhi Dong
Summary: The study shows that using sand filtration and ozone-biological activated carbon pre-treated water as feed water is an effective strategy to combat membrane fouling in nanofiltration, while ensuring high-quality drinking water.
Article
Environmental Sciences
Qingqing Zhao, Huan He, Kuo Gao, Tian Li, Bingzhi Dong
Summary: This study used metagenomic assembly and network analysis to examine the resistome profile, mobility, host, and pathogenicity in two drinking water treatment plants. The results showed that both conventional and advanced DWTPs effectively reduced the concentration of total ARGs.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
W. Zhang, T. Li, B. Dong
Summary: This study comprehensively introduces the PARAFAC analysis and SOM neural network method, and applies them to the fluorescence characteristics analysis of dissolved organic matter in Taihu Lake water. The results indicate that the combined method of the three-dimensional fluorescence spectrum analysis, PARAFAC, and SOM analysis can provide important information for the characterization of the fluorescence properties of dissolved organic matter in surface water bodies.
WATER SCIENCE AND TECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Zhenbao Shi, Qingran Shen, Qiong Tan, Tian Li
Summary: This study conducted precise analysis on an area of approximately 31 km(2) in downtown Shanghai using urban drainage network data and spatial geological information, establishing a two-dimensional model. A platform was developed for urban flooding early warning and rainfall runoff management, providing risk assessment of the drainage system and early warning of flooding risk.
Article
Biochemistry & Molecular Biology
Tian Li, Hongjian Yu, Jing Tian, Junxia Liu, Tonghao Yuan, Shaoze Xiao, Huaqiang Chu, Bingzhi Dong
Summary: This study investigated the water purification effect and membrane fouling mechanism of two types of powdered activated carbon (PAC) in enhancing Polyvinylidene Fluoride (PVDF) ultrafiltration (UF) membranes for surface water treatment. The results showed that PAC effectively improved membrane filtration performance and reduced irreversible fouling, thus extending the running time.
