Article
Environmental Sciences
Arianna E. Sherman, Shan Huang, Peter R. Jaffe
Summary: The study investigates the impact of Hurricane Florence on the biogeochemistry of riverine and riparian sediments in the Neuse River Watershed in North Carolina. It reveals that the unique environment created by high NH4+ concentrations, acidic conditions, and elevated levels of ferric iron supports the Feammox process carried out by Acidimicrobium sp. A6, which may serve as an important mechanism for NH4+ removal in the river system. The results also suggest that major hydrologic storm events can enhance Feammox activity in riverine sediments by delivering Fe(III).
Review
Environmental Sciences
Xin Tan, Guo-Jun Xie, Wen-Bo Nie, De-Feng Xing, Bing-Feng Liu, Jie Ding, Nan-Qi Ren
Summary: Feammox is a novel pathway for ammonium (NH4 (+)) oxidation and nitrogen cycle, leading to significant loss of nitrogen in natural environments. Various Feammox pathways, end products, and interactions within microbial communities have been revealed by researchers, offering alternative processes for wastewater treatment. However, substantial variations exist among different studies in terms of key functional microorganisms.
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Environmental Sciences
Bangjing Ding, Zhengkui Li, Miaomiao Cai, Mingzhu Lu, Wenzhi Liu
Summary: This study investigated the seasonal activities of anammox and Feammox in farmland soils and found that Feammox contributed more to anaerobic NH4+ loss than anammox. The factors controlling these processes include N availability, soil moisture content, and iron ion concentration.
Article
Agronomy
Ambar Cerda, Macarena Gonzalez, Carolina Rodriguez, Jennyfer Serrano, Eduardo Leiva
Summary: The excessive deposition of ammonium in the environment has negative impacts on biodiversity and ecosystem eutrophication. Anthropogenic sources are responsible for the majority of terrestrial reactive nitrogen, contributing to 45% of the total annual production on Earth. The Feammox process, a biological method that anaerobically metabolizes ammonium, coupled with hollow fiber membrane bioreactors (HFMBs), shows promise for the removal of ammonium from agriculturally derived wastewater. This study evaluated the formation of Feammox bacterial biofilms and demonstrated their efficiency in ammonium removal, providing valuable insights for scaling up the HFMBs process.
Article
Engineering, Environmental
Xia Liu, Yun Li, Ruijie Shen, Min Zhang, Feizhou Chen
Summary: The response of diatoms to reduced nitrogen and high phosphorus concentration in a eutrophic lake was studied. The results showed that the growth of diatoms was more sensitive to nitrogen reduction, and their response to nitrogen changed with water temperature.
Article
Environmental Sciences
Yumei Li, Huan Liu, Danjun Ye, Qiaoyun Jiang, Xiangjie Cui, Juan Li, Juli Jiang, Leyong Wang, Xiancai Lu
Summary: The reduction of Fe(III) coupled with the oxidation of organic matter is a critical biogeochemical process in lacustrine sediments. This study revealed the changes in the diversity of culturable DIRB communities with sediment depth and found that it is influenced by the distribution of nutrients and iron (minerals).
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Jiaxuan Zhu, Xuejun Yan, Lean Zhou, Nan Li, Chengmei Liao, Xin Wang
Summary: The study found that Feammox activity is associated with an increased abundance of iron-reducing bacteria, while the Paddy Group had a shorter lag period than the Mine Group. Ammonium-oxidizing archaea and methanogens dominated among the known archaea.
ENVIRONMENTAL RESEARCH
(2022)
Article
Engineering, Environmental
Yaojin Xiong, Yao Du, Yamin Deng, Teng Ma, Yanxin Wang
Summary: Groundwater nitrogen contamination is a growing concern worldwide. This study provides evidence of the occurrence of Feammox in groundwater and identifies the key microbial and environmental factors associated with this process.
Article
Engineering, Environmental
Yafei Yang, Cancan Xiao, Qing Yu, Zhiqiang Zhao, Yaobin Zhang
Summary: The study confirmed the occurrence of a novel 'anammox' process in the absence of anammox bacteria, driven by NO-induced Fe(II) oxidation and NH-induced Fe(III) reduction (Feammox) in an anaerobic sludge system. The results showed that Fe(II) was anaerobically oxidized to Fe(III) with the addition of NO2-, leading to significant nitrogen removal. XRD and XPS analysis indicated the production of FeOOH from chemical Fe(II) oxidation with NO2-. Additionally, the isotope experiment confirmed the participation of induced Fe(II) oxidation in Feammox for nitrogen removal.
Article
Environmental Sciences
Xiang Chen, Ling Liu, Wenming Yan, Minjuan Li, Xiaolei Xing, Qi Li, Liangzhen Zhu, Tingfeng Wu, Xiangyu He
Summary: This study demonstrates that nFe(3)O(4) capping can effectively control the internal phosphorus release in sediments, making it a potential material for remediation of lake eutrophication.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Geosciences, Multidisciplinary
Shuntao Chen, Dengzhou Gao, Xiaofei Li, Dongyao Sun, Yanling Zheng, Hongpo Dong, Xia Liang, Guoyu Yin, Ping Han, Min Liu, Lijun Hou
Summary: This study assessed the potential activity of nitrate and ferric iron reduction and microbial diversity in coastal wetlands of China. The results showed higher activity in subtropical regions compared to temperate regions, with sediment characteristics and geographical factors having an indirect effect on the process.
Article
Microbiology
Xiao-Ru Yang, Hu Li, Jian-Qiang Su, Guo-Wei Zhou
Summary: The study suggests that Anammox bacteria or the cooperation between Anammox bacteria and iron(III) reducers may play a potential role in the Feammox process.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Environmental Sciences
Han Gao, Chao Wang, Juan Chen, Peifang Wang, Jingjing Zhang, Bo Zhang, Rong Wang, Cheng Wu
Summary: This study investigates the effects of BDE-209 on SO42- reduction mediated by SRB in sediment. The results show that BDE-209 contamination enhances DSR activity, leading to an increase in sulfide concentration. The stimulatory effect of BDE-209 is related to changes in SRB community.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Hongzhong Dang, Chenxin Tang, Tianxu Zeng, Yuan Yan, Xinbo Wu, Jiao Ma, Yongzhi Chen
Summary: Fe(III) reduction coupled with anaerobic ammonium oxidation (Feammox) is a newly discovered biological ammonium removal technology that is more tolerant to heavy metals and does not require NO2--N as a reaction substrate. This study investigated the effects of Fe/N, pH, and temperature on Feammox performance and found that the optimal working conditions were Fe/N of 0.15, pH of 6.5, and temperature of 30 degrees C.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Environmental Sciences
Bangjing Ding, Hui Zhang, Wenqi Luo, Siyu Sun, Fan Cheng, Zhengkui Li
Summary: The study investigated the distribution of nitrogen loss pathways in different layers of paddy soil in southeastern China, revealing differences in the activities of anammox and Feammox in different soil layers. Denitrification was identified as the main nitrogen loss pathway in the surface soil, while Feammox became significant in the 20-40 cm depth.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Bin Li, Yin Zhang, Jin Xu, Yanglu Mei, Shisuo Fan, Huacheng Xu
Summary: The study investigated the influence of different carbonation methods on the properties and adsorption performance of biochars, finding that the combination of hydrothermal treatment with KHCO3 activation significantly increases the surface area and pore structure of biochar. In terms of adsorbing tetracycline, KHCO3-activated BCs exhibited higher adsorption capacity, with the dominant mechanisms being pore-filling effect and pi - pi interactions.
Article
Engineering, Environmental
Changhui Wang, Zhanling Wang, Huacheng Xu, Leilei Bai, Cheng Liu, Helong Jiang, Peixin Cui
Summary: Fe-based materials used for P adsorption are often limited by increased Fe lability, but Fe in drinking water treatment residue (DWTR) shows stable P adsorption abilities. Compared to FeCl3 and Fe-2(SO4)(3), Fe in DWTR is relatively stable under the effects of organic matter, sulfides, and anaerobic conditions. The addition of DWTR increases oxidizable Fe in sediment and stabilizes Fe distribution, enhancing Fe stability for environmental remediation.
Article
Engineering, Environmental
Musong Chen, Shiming Ding, Cai Li, Yazhou Tang, Xianfang Fan, Huacheng Xu, Daniel C. W. Tsang, Chaosheng Zhang
Summary: Eutrophication and metal pollution are global environmental issues. This study investigated the mobility of cadmium in sediments from Lake Taihu and found that the sudden outbreak of cadmium pollution in May and June was due to the complexation of dissolved organic matter with cadmium in sediments. The research highlights the risk of sudden cadmium pollution events in eutrophic lakes.
Article
Agricultural Engineering
Yanglu Mei, Jin Xu, Yin Zhang, Bin Li, Shisuo Fan, Huacheng Xu
Summary: The study demonstrated that Fe-N modified biochar produced by mixing rice straw with FeCl3·6H2O and urea showed enhanced adsorption capacity for TC due to the presence of more functional groups and increased surface area and pore volume. The adsorption mechanism of TC on Fe-N-RSBC involved pore filling, hydrogen-bond interaction, surface complexation, and pi-pi interaction. Fe-N-RSBC can be effectively used as an adsorbent for TC removal from aqueous solution.
BIORESOURCE TECHNOLOGY
(2021)
Article
Environmental Sciences
Tianran Ye, Tian Fang, Yulai Wang, Shenzhen Zhang, Leilei Bai, Huacheng Xu, Mengjing Guo, Guanghong Sheng
Summary: The behavior and fate of microplastics (MPs) are closely related to their interactions with surrounding organic matters, with high molecular weight (HMW) organic substances showing stronger affinity towards MPs compared to low molecular weight (LMW) counterparts. Aromatic protein-like substances in HMW fraction exhibited higher adsorption affinity to MPs, offering more binding sites for additives to inhibit the release of organic substances. The MW- and component-dependent heterogeneities of organic matter samples must be considered in evaluating the environmental behavior of MPs.
ENVIRONMENTAL RESEARCH
(2021)
Article
Limnology
Hui Lin, Huacheng Xu, Yihua Cai, Claude Belzile, Robie W. Macdonald, Laodong Guo
Summary: Arctic rivers are sensitive to climate and environmental change, but the biogeochemical response is poorly understood. Through the analysis of monthly size-fractionated dissolved organic matter samples using various spectroscopy techniques, insights were gained into the seasonal variation in DOM composition for different size-fractions and the dynamics of source waters.
LIMNOLOGY AND OCEANOGRAPHY
(2021)
Article
Environmental Sciences
Haiyan Du, Hongxia Wang, Zhilai Chi, Na Song, Changhui Wang, Huacheng Xu
Summary: This study explored the burst of hydroxyl radicals in lake sediments during the flooding/drought transformation process, finding that the concentrations of HO center dot rapidly increased due to enhanced dissolved oxygen contents and surface Fe(II) oxidation. The higher percentage of humic-like substances in sediment indicated an important role in HO center dot formation through electron transfer under redox conditions. These findings contribute to our understanding of geochemical cycling of elements and fate of contaminants in aquatic ecosystems.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Haiyan Du, Yuanxin Cao, Zhe Li, Lina Li, Huacheng Xu
Summary: The study found that seasonal sediment samples from Lake Poyang in China exhibited high concentrations of HO' with spatial heterogeneity, showing positive correlations with Fe(II), sedimentary organic carbon, and dissolved organic carbon content, indicating a general contribution of these reduced substances to HO' formation. Moreover, the contents and species of Fe(II) and DOM were highlighted as important factors in manipulating HO' yield.
Article
Environmental Sciences
Changhui Wang, Zhao Wei, Yuanyuan Zhao, Leilei Bai, Helong Jiang, Huacheng Xu, Youze Xu
Summary: The study found that P-inactivating materials can effectively control soluble P pollution in lake sediments, but have limited impact on particulate P. Hydrodynamic disturbance is a key factor regulating sediment resuspension and settlement.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Bin Li, Yin Zhang, Jin Xu, Shisuo Fan, Huacheng Xu
Summary: The pyrolysis temperature significantly affects the physicochemical properties of magnetic porous biochars (MPBCs), and the adsorption capacity increases with higher pyrolysis temperatures. The adsorption potential of MPBCs is not solely determined by surface area and pore volume, but is influenced by pore-filling, pi-pi interaction, complexation, and hydrogen bonding. MPBCs demonstrate high saturation magnetization, making them easily separable by an external magnet. MPBCs, especially those pyrolyzed at 700 degrees C, are excellent adsorbents for contaminant removal due to their high separation, adsorption, and reuse performance.
Article
Environmental Sciences
Changhui Wang, Chenghao Huang, Huacheng Xu, Nannan Yuan, Xin Liu, Leilei Bai, Xiaosong He, Rui Liu
Summary: Recycling drinking water treatment residue (DWTR) to make ceramsite can provide environmental and economic benefits in water environment remediation. The key parameter for ceramsite production is the sintering temperature. Ceramsites made from different DWTR have varying properties and require specific ingredients preparation. DWTR based ceramsite is identified as non-hazardous material and has the ability to adsorb heavy metals.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Jin Xu, Yin Zhang, Bin Li, Shisuo Fan, Huacheng Xu, Dong-Xing Guan
Summary: In this study, co-modification of KOH and KMnO4 on biochar (K-Mn-BC) was performed, and the results showed that the modified K-Mn-BC had a high specific surface area and pore volume, and could efficiently adsorb TC within a wide pH range.
Article
Environmental Sciences
Xin Liu, Xuan Sun, Rui Liu, Leilei Bai, Peixin Cui, Huacheng Xu, Changhui Wang
Summary: This study comprehensively assessed the variations in sulfate reduction during algal bloom sedimentation with the addition of sulfate based inactivating materials. The results showed that the addition of Al-2(SO4)(3) had a more substantial effect on water and sediment properties, promoting the transformation of sulfides to odorous contaminants and the enrichment of microorganisms related to S cycles and potentially pathogenic bacteria.
Article
Environmental Sciences
Ying Luo, Zhaopeng Li, Huacheng Xu, Xiaoyun Xu, Hao Qiu, Xinde Cao, Ling Zhao
Summary: This study proposes the production of phosphorus-composite biochar to enhance carbon sequestration and heavy metals immobilization. Results show that incorporating phosphorus increases the retention of pyrolytic carbon in biochar and enhances its stability. After incubation with soil, the phosphorus-composite biochar demonstrated higher carbon sequestration and heavy metals immobilization compared to pristine biochar. Additionally, the phosphorus-composite biochar intelligently alters soil microbial community, promoting the immobilization of heavy metals.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Biochemistry & Molecular Biology
Zhiqiang Shi, Huacheng Xu, Zhiyuan Wang, Haiyan Du, Xiaowei Fu
Summary: The study found that increased Cu concentrations in the environment can lead to growth inhibition and oxidative damage in algae, while the presence of humic acids (HA) can significantly alleviate Cu-induced toxicity damage, providing protection for algae in the environment.
ENVIRONMENTAL POLLUTANTS AND BIOAVAILABILITY
(2021)
