Article
Engineering, Environmental
Mingrun Li, Dong Li, Fei Han, Zhongxin Mao, Lijun Hu, Wenqiang Wang, Jie Zhang
Summary: The practical application of anammox process is limited by the requirement of anaerobic environment. By utilizing sulfur oxidizing bacteria (SOB) to provide a better anaerobic environment, the cost of deoxidation in actual operation can be reduced. In a low substrate environment, Candidatus_Kuenenia becomes the dominant anammox bacteria, and the increase of Thiobacillus and Desulfovibrio abundance promotes sulfur recovery and utilization.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Agricultural Engineering
Pengfei Huo, Xueming Chen, Linyan Yang, Wei Wei, Bing-Jie Ni
Summary: This study developed an integrated model to describe the interactions between sulfur-oxidizing bacteria and Anammox bacteria, and investigated the influence of influent conditions on the performance and microbial community structure of the anoxic reactor.
BIORESOURCE TECHNOLOGY
(2022)
Review
Engineering, Environmental
Quan Zhang, Xijun Xu, Ruochen Zhang, Bo Shao, Kaili Fan, Lei Zhao, Xiaoming Ji, Nanqi Ren, Duu-Jong Lee, Chuan Chen
Summary: This review summarizes the recent advances and characteristics of the mixed/mixotrophic nitrogen removal (MixNR) process guided by sulfur-driven autotrophic denitrification (SDAD) and anammox. It discusses the functional microorganisms in different MixNR systems, sheds light on metabolic mechanisms and microbial interactions, and highlights the importance of MixNR for carbon reduction in the BNR process. Knowledge gaps and future research directions that may facilitate the practical application of the MixNR process are also emphasized.
Article
Agricultural Engineering
Xiang Li, Jiayi Zou, Dongyuan Zhang, Linyan Xie, Yan Yuan
Summary: This study demonstrated the feasibility of in-situ autotrophic removal of NH3 and H2S by coupling PN-Anammox and SADN processes, achieving removal efficiencies of 95% and 87.5% respectively. The biochemical treatment pond efficiently treated the scrubbing liquid, preventing nitrogenous compounds accumulation and converting them to N2 through the coupling system.
BIORESOURCE TECHNOLOGY
(2021)
Article
Agricultural Engineering
Wenmin Lin, Jiyu Feng, Keqiang Hu, Bingyu Qu, Song Song, Kuang He, Chang Liu, Yuancai Chen, Yongyou Hu
Summary: The study demonstrated that a single up-flow thiosulfate-driven nitrate denitratation coupled with the sulfurized Anammox process showed promising results in removing high-content ammonium with nitrate as electron acceptor. The process achieved a total nitrogen removal efficiency of approximately 83.66% and provided insights for engineering applications in high concentration nitrogen wastewater treatment.
BIORESOURCE TECHNOLOGY
(2022)
Article
Engineering, Environmental
Yiyi Zhao, Ying Dong, Xue Chen, Zhibin Wang, Zhaojie Cui, Shou-Qing Ni
Summary: The partial nitrification-anammox (PNA) process is a new green biological nitrogen removal technology that utilizes sulfide to selectively inhibit nitrite oxidizing bacteria (NOB) activity while promoting sulfur autotrophic denitrification (SAD) process, thereby improving nitrogen removal efficiency and sulfur removal efficiency.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Da Huo, Yan Dang, Dezhi Sun, Dawn E. Holmes
Summary: This study demonstrates that the addition of siderite stabilizes the reactor system and significantly improves the nitrogen removal process. The sulfur/siderite reactor exhibits higher nitrogen removal efficiency and stronger Anammox activity compared to the sulfur reactor.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Review
Engineering, Environmental
Yang-Fan Deng, Fei-xiang Zan, Hao Huang, Di Wu, Wen-tao Tang, Guang-Hao Chen
Summary: This review systematically summarizes and discusses the sulfur-based denitrification with anammox (SDA) process, including its biochemistry, biokinetic reactions, reactor performance, and application. The dominant functional bacteria and microbial interactions in the SDA process are also discussed. The paper provides an in-depth insight into the coupling mechanism of SDA and its potential application in biological nitrogen removal.
Article
Environmental Sciences
Xin Xin, BaiXue Li, Xin Liu, Wenyu Yang, Qin Liu
Summary: In this study, a novel coupling process (SAPD-A) combining sulfide autotrophic partial denitrification (SAPD) and anaerobic ammonium oxidation (Anammox) was developed using an anaerobic sequencing batch reactor (ASBR). The process consisted of two stages, with the SAPD process successfully started by gradually increasing the inflow of nitrate and sulfide. The SAPD-A process achieved high removal efficiencies of nitrate, ammonium, and total nitrogen, and was dominated by Anammox for nitrogen removal.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Environmental
Yi-Lu Sun, Kun Zheng, Si-Yuan Zhai, Hao-Yi Cheng, Zhi-Min Qian, Hong-Cheng Wang, Ji-Xian Yang, Xue-Ning Zhang, Ai-Jie Wang
Summary: In this study, a sulfur-based autotrophic disproportionation-denitrification (SAD2) system was successfully developed by connecting an independent sulfur-based autotrophic disproportionation (SADP) bioreactor with a SADN bioreactor. The SAD2 system achieved adjustable and high-rate nitrogen removal while avoiding sulfide emissions, surpassing the capabilities of the independent SADN system. This novel system offers a new pattern for practical applications.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Hongli Zhang, Xiaojing Zhang, Denghui Wei, Xiaoyu Wen, Shijie Zhou, Yuqi Li, Yongen Dong, Yaoyao Gong
Summary: This study established a sulfide-depending autotrophic denitrification process by adding sulfide to an Anammox system, aimed at addressing water pollution issues caused by the coexistence of nitrogen and sulfur pollutants. The coupling process achieved high removal efficiencies of TN and sulfide, and the interaction between Anammox and denitrifying bacteria played a significant role in simultaneous nitrogen and sulfur removal.
Article
Engineering, Environmental
Zhiju Liu, Yujie Qin, Xiangyin Liu, Lan Yang, Siyuan Gong, Shaohong Zheng, Xinyue Lin, Junfeng Yang, Tiansheng Lu, Jiannv Chen
Summary: The effects of substance concentration and glycine betaine on nitrogen removal and microbial communities in the sulfide autotrophic denitrification and Anammox coupling process were investigated. It was found that increasing substance concentration decreased the efficiency of ammonia and total nitrogen removal, but adding glycine betaine improved the removal efficiency. High-throughput sequencing results showed that increasing substrate concentration led to a decrease in Anammox bacteria abundance and an increase in Thiobacillus abundance.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Environmental Sciences
Fen Wang, Jing Li, Hongli Duan
Summary: A lab-scale sulfur-limestone based bioretention system with a submerged zone was used to remove nitrate-nitrogen from stormwater. The study found that denitrification mainly occurred during the first 5 days of drying period. The system effectively removed nitrate-nitrogen and met the Chinese Quality Standard for Ground Water when the influent concentration was below 30 mg/L. The sulfur autotrophic denitrification process followed a first-order kinetic model, and the dominant bacteria in the submerged zone were Thiobacillus and Halothiobacillus.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Xiang Li, Yan Yuan, Pengze Dang, Bo-lin Li, Yong Huang, Wei Li, Mao Zhang, Miao Shi, Ziqi Shen, Linyan Xie
Summary: This study investigated the effects of salinity on anaerobic nitrogen and sulfide removal in a coupled anammox and short-cut sulfur autotrophic denitrification (SSADN) system. The results showed that salinity had significant nonlinear effects on nitrogen and sulfur transformations in the system. At salinity levels below 2%, anammox and SSADN activities increased with increasing salinity, while at higher salinity levels, the performances of the two processes gradually decreased.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Biotechnology & Applied Microbiology
Grubba Dominika, Majtacz Joanna, Makinia Jacek
Summary: Sulfate can act as an electron acceptor for ammonium oxidation under anaerobic conditions, known as sulfammox, offering an alternative to nitrite-dependent anammox. This process shows promising removal efficiencies for both NH4+ and SO42- in various wastewater systems, especially in industrial settings with high nitrogen compound and sulfate content.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Environmental Sciences
Toshimi Nakajima, Mao Kuragano, Makoto Yamada, Ryo Sugimoto
Summary: This study compared the contribution of submarine groundwater discharge (SGD) to river nutrient budgets at nearshore and embayment scales, and found that SGD-derived nutrients become more important at larger spatial scales.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Fan Liu, Lei Zhang, Chongyang Zhang, Ziguang Chen, Jingguang Li
Summary: NO2 emissions from wall-mounted gas stoves used for household heating have become a significant source of indoor pollution in Chinese urban areas. The high indoor concentration of NO2 poses potential health risks to residents. It is urgently necessary to establish relevant regulations and implement emission reduction technologies to reduce NO2 emissions from wall-mounted gas stoves.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Letter
Environmental Sciences
Hans Peter H. Arp, Raoul Wolf, Sarah E. Hale, Sivani Baskaran, Juliane Gluege, Martin Scheringer, Xenia Trier, Ian T. Cousins, Harrie Timmer, Roberta Hofman-Caris, Anna Lennquist, Andre D. Bannink, Gerard J. Stroomberg, Rosa M. A. Sjerps, Rosa Montes, Rosario Rodil, Jose Benito Quintana, Daniel Zahn, Herve Gallard, Tobias Mohr, Ivo Schliebner, Michael Neumann
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Philomina Onyedikachi Peter, Binessi Edouard Ifon, Francois Nkinahamira, Kayode Hassan Lasisi, Jiangwei Li, Anyi Hu, Chang-Ping Yu
Summary: This study investigates the relationship between dissolved organic matter (DOM) and Rare Earth Elements (REEs) in sediments from Yundang Lagoon, China. The results show four distinct fluorescent components, with protein-like substances being the most prevalent. Additionally, the total fluorescence intensity and LREE concentrations exhibit a synchronized increase from Outer to Inner to Songbai Lake core sediments. The findings demonstrate a strong correlation between DOM content and pollution levels.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Surya Gupta, Pasquale Borrelli, Panos Panagos, Christine Alewell
Summary: The objective of this study is to incorporate soil hydraulic properties into the erodibility factor (K) of USLE-type models. By modifying and improving the existing equations for soil texture and permeability, the study successfully included information on saturated hydraulic conductivity (Ksat) into the calculation of K factor. Using the Random Forest machine learning algorithm, two independent K factor maps with different spatial resolutions were generated. The results show that the decrease in K factor values has a positive impact on the modeling of soil erosion rates.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Jesmin Akter, Wendy J. M. Smith, Yawen Liu, Ilho Kim, Stuart L. Simpson, Phong Thai, Asja Korajkic, Warish Ahmed
Summary: The choice of workflow in wastewater surveillance has a significant impact on SARS-CoV-2 concentrations, while having minimal effects on HF183 and no effect on HAdV 40/41 concentrations. Certain components in the workflow can be interchangeable, but factors such as buffer type, chloroform, and homogenization speed can affect the recovery of viruses and bacteria.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Yu Luo, Xueting Yang, Diwei Wang, Hongmei Xu, Hongai Zhang, Shasha Huang, Qiyuan Wang, Ningning Zhang, Junji Cao, Zhenxing Shen
Summary: Atmospheric PM2.5, which can generate reactive oxygen species (ROS), is associated with cardiorespiratory morbidity and mortality. The study found that both the mass concentration of PM2.5 and the DTT activity were higher during the heating season than during the nonheating season. Combustion sources were the primary contributors to DTT activity during the heating season, while secondary formation dominated during the nonheating season. The study also revealed that biomass burning had the highest inherent oxidation potential among all sources investigated.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Erin L. Murphy, Leah R. Gerber, Chelsea M. Rochman, Beth Polidoro
Summary: Plastic pollution has devastating consequences for marine organisms. This study uses a trait-based framework to develop a vulnerability index for marine mammals, seabirds, and sea turtles in Hawai'i. The index ranks 63 study species based on their vulnerability to macroplastic pollution, providing valuable information for species monitoring and management priorities.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Kenji Maurice, Amelia Bourceret, Sami Youssef, Stephane Boivin, Liam Laurent-Webb, Coraline Damasio, Hassan Boukcim, Marc-Andre Selosse, Marc Ducousso
Summary: Growing pressure from climate change and agricultural land use is destabilizing soil microbial community interactions. Little is known about microbial community resistance and adaptation to disturbances, hindering our understanding of recovery latency and implications for ecosystem functioning. This study found that anthropic disturbance and natural disturbance have different effects on the topology and stability of soil microbial networks.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Yunhao Li, Yali Feng, Haoran Li, Yisong Yao, Chenglong Xu, Jinrong Ju, Ruiyu Ma, Haoyu Wang, Shiwei Jiang
Summary: Deep-sea mining poses a serious threat to marine ecosystems and human health by disturbing sediment and transmitting metal ions through the food chain. This study developed a new regenerative adsorption material, OMN@SA, which effectively removes metal ions. The adsorption mechanism and performance of the material for metal ion fixation were investigated.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Antonio Medici, Margherita Lavorgna, Marina Isidori, Chiara Russo, Elena Orlo, Giovanni Luongo, Giovanni Di Fabio, Armando Zarrelli
Summary: Valsartan, a widely used antihypertensive drug, has been detected in high concentrations in surface waters due to its unchanged excretion and incomplete degradation in wastewater treatment plants. This study investigated the degradation of valsartan and identified 14 degradation byproducts. The acute and chronic toxicity of these byproducts were evaluated in key organisms in the freshwater trophic chain.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Jiang Lin, Lianbao Chi, Qing Yuan, Busu Li, Mingbao Feng
Summary: This study investigated the photodegradation behavior and product formation of two representative pharmaceuticals in simulated estuary water. The study found that the formed transformation products of these pharmaceuticals have potential toxicity on marine organisms, including oxidative stress and damage to cellular components.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Hua Fang, Dongdong Jiang, Ye He, Siyi Wu, Yuehong Li, Ziqi Zhang, Haoting Chen, Zixin Zheng, Yan Sun, Wenxiang Wang
Summary: This study revealed that exposure to lower levels of air pollutants led to decreased pregnancy rates, with PM10, NO2, SO2, and CO emerging as the four most prominent pollutants. Individuals aged 35 and above exhibited heightened susceptibility to pollutants.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Ali Shaan Manzoor Ghumman, Rashid Shamsuddin, Amin Abbasi, Mohaira Ahmad, Yoshiaki Yoshida, Abdul Sami, Hamad Almohamadi
Summary: In this study, inverse vulcanized polysulfides (IVP) were synthesized by reacting molten sulfur with 4-vinyl benzyl chloride, and then functionalized using N-methyl D-glucamine (NMDG). The functionalized IVP showed a high mercury adsorption capacity and a machine learning model was developed to predict the amount of mercury removed. Furthermore, the functionalized IVP can be regenerated and reused, providing a sustainable and cost-effective adsorbent.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Rita Bonfiglio, Renata Sisto, Stefano Casciardi, Valeria Palumbo, Maria Paola Scioli, Erica Giacobbi, Francesca Servadei, Gerry Melino, Alessandro Mauriello, Manuel Scimeca
Summary: This study investigated the presence of aluminum in human colon cancer samples and its potential association with biological processes involved in cancer progression. Aluminum was found in tumor areas of 24% of patients and was associated with epithelial to mesenchymal transition (EMT) and cell death. Additional analyses revealed higher tumor mutational burden and mutations in genes related to EMT and apoptosis in aluminum-positive colon cancers. Understanding the molecular mechanisms of aluminum toxicity may improve strategies for the management of colon cancer patients.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)