Article
Environmental Sciences
Xiaohong Zhao, Xiaoyuan Zhao, Chen Chen, Haidong Zhang, Lingqing Wang
Summary: This study designed a combined ecological floating bed with alum sludge ceramsite to improve the water purification effect of traditional ecological floating beds. The results showed that the combined ecological floating bed had a higher purification efficiency compared to the traditional ecological floating bed, especially in the removal of total phosphorus.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Biotechnology & Applied Microbiology
Keying Song, Yun Lu, Guohua Dao, Zhuo Chen, Yinhu Wu, Shengnan Wang, Junhan Liu, Hong-Ying Hu
Summary: This study developed an association model considering multiple factors to control nitrogen and phosphorus concentrations in reclaimed water and prevent algal blooms. Numerical simulations showed that non-point source pollution and hydraulic retention time (HRT) affected the threshold values of nitrogen and phosphorus concentrations. The findings provide a theoretical basis for determining reasonable water quality control levels.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2022)
Article
Environmental Sciences
W. Liu, Z. Q. Xu, Y. J. Long, M. Q. Feng
Summary: Alum sludge can effectively remove phosphorus and inhibit algal growth in reclaimed water urban landscape ponds, reducing the risk of algal blooms, especially for dominant algae species such as Microcystis flos-aquae and Scenedesmus quadricauda.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Shanshan Sun, Manping Zhang, Xushun Gu, Shengbing He, Li Tang
Summary: This study investigated the impact of plants on iron-based ecological floating beds (EFBs) and found that plants can improve nutrient removal, reduce greenhouse gas emissions, and influence microbial communities. This highlights the importance of including plants in EFB systems.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Engineering, Environmental
Keying Song, Shufeng Zhu, Yun Lu, Guohua Dao, Yinhu Wu, Zhuo Chen, Shengnan Wang, Junhan Liu, Wenguang Zhou, Hong-Ying Hu
Summary: This study developed an integrated algal growth model to investigate the combined effects of nitrogen and phosphorus concentrations, light intensity, and temperature on algae growth. A control model was established to prevent algal blooms by considering the biomass, nitrogen concentration, and phosphorus concentration mass balance equations. Model parameters were determined through experimental data fitting, and numerical simulations were conducted to determine nitrogen/phosphorus concentration and hydraulic retention time thresholds for reclaimed water in landscape water.
FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
(2022)
Article
Environmental Sciences
Hang Qi, Siyu Zeng, Lei Shi, Xin Dong
Summary: Reclaimed water has different spatial patterns and importance among the 31 provinces in China, providing a new perspective and guidance for optimizing the structure of virtual water trade.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Green & Sustainable Science & Technology
Lanqing Qiu, Ping Yu, Shaofei Li, Huixin Ma, Danying Li, Jianzhu Li
Summary: Based on special water experiments and a hydrodynamic water quality model, a water quality improvement scheme using an ecological floating bed was developed to simulate and improve the water quality of the Wuqing urban section of the North Canal Basin in Tianjin. The results showed a significant decrease in ammonia nitrogen, total phosphorus, and chemical oxygen demand concentrations after the implementation of the ecological floating bed.
Article
Engineering, Environmental
Tong Zhang, Haochi Zhang, Kai Tong, Hui Wang, Xianning Li
Summary: The study investigated the performance of floating beds consisting of biounits in treating eutrophic water, with the Integrated Ecological Floating Bed (IEFB) showing the highest removal rates of nitrogen and phosphorus. The removal mechanisms mainly relied on microbial denitrification and sedimentation. The arrangement of multiple biounits in the IEFB played a crucial role in improving water quality.
JOURNAL OF ENVIRONMENTAL ENGINEERING
(2021)
Article
Environmental Sciences
Zheng Zhu, Yi Wang, Xue-Yi Han, Wen-Huai Wang, Hao-Min Li, Zi-Qi Yue, Wei Chen, Fu-Rong Xue
Summary: In this study, a functional ecological floating bed (FEFB) was constructed by suspending calcium peroxide (CP) and sponge iron (SI) below the conventional ecological floating bed (CEFB) to improve the purification effect of landscape water. The FEFB showed significant purification effect on the quality of landscape water supplied with reclaimed water, maintaining stable nutrient status and low turbidity. It promoted the degradation of humus and controlled sediment mass, reducing nitrogen content and enhancing phosphorus stability. Overall, the FEFB provides an innovative approach to improve the quality of landscape water.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Agricultural Engineering
Yuanyuan Peng, Shengbing He, Xushun Gu, Pan Yan, Li Tang
Summary: Coupling ZVI with plant biomass in the ecological floating bed (EFB) can enhance denitrification performance, as plant biomass promotes electron transfer of ZVI and improves Fe(II)-mediated denitrification. High-throughput sequencing analysis showed that IB-EFB enriched iron-related denitrifying bacteria more effectively than ICEFB, with high abundance of phototrophic Fe(II)-oxidizing bacteria Rhodopseudomonas (19.26%). This study indicates the potential for enhanced nitrogen removal in EFB by coupling ZVI with plant biomass.
BIORESOURCE TECHNOLOGY
(2021)
Article
Chemistry, Physical
Xiao-Li Yang, Tao Li, Yang-Guang Xia, Rajendra Prasad Singh, Hai-Liang Song, Heng Zhang, Ya-Wen Wang
Summary: This study investigated the performance of an ecological floating bed-microbial fuel cell (EFB-MFC) coupled system for electricity generation and nitrogen removal. Results showed that introducing plants into the MFC system reduced resistance and increased voltage, while also improving NH4+-N and TN removal efficiency. Water spinach system showed the best performance, but rotten roots of windmill grass released extra NH4+-N which impaired nitrogen removal. Radial oxygen loss and root exudates played significant roles in enhancing electricity generation and nitrogen removal. Electrical stimulation of enzyme activity related to nitrogen removal and migration of NH4+-N contributed to enhancing nitrogen removal.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Environmental Sciences
Meng Li, Jiaheng Liu, Chao Zhang, Jinli Wang, Pengfeng Li, Jingmei Sun, Yongli Sun
Summary: Sodium hypochlorite was widely used as a supplementary disinfectant in reclaimed water production during the COVID-19 epidemic. Microcosmic experiments showed that chlorination of reclaimed water promotes algal growth and increases bacterial abundance, while altering the characteristics of the bacterial community. It was also discovered that the secondary risks of chlorine disinfection include not only bacterial regeneration but also algal growth.
Article
Environmental Sciences
Cheng Yan, Tangming Ma, Mingxuan Wang, Shunqing Yang, Liuyan Yang, Yan Gao
Summary: The study designed an electrolysis-enhanced ecological floating bed (EEEFB) for enhanced removal of NH3-N and PO43--P in hyper-eutrophic water. Different anode materials, particularly the Mg-Al alloy anode, were found to improve removal efficiency. In winter, EEEFBs showed significantly higher removal rates of NH3-N and PO43--P compared to traditional ecological floating beds.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Engineering, Environmental
Ye Qiu, Yunlong Ji, Yan Tian, Henan Li, Jiannan Li, Zeng Li, Menglong Liao, Guohong Liu, Yujie Feng
Summary: An innovative ecological floating bed coupled with sedimental microbial electrochemical system (ECOFB-MES) was designed and demonstrated for urban water remediation. The ECOFB-MES effectively stabilized the concentration of pollutants and improved the removal efficiency of organic and nutrient substances during one year of operation. The system also enhanced the diversity of bacteria and promoted nitrogen removal through heterotrophic nitrification and aerobic denitrification.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Qingyu Wu, Yao Chen, Yang He, Qiming Cheng, Qiong Wu, Zhen Liu, Yunqing Tan, Zhenmei Yang, Yuqing Tan, Ying Yuan
Summary: A new electrolysis-ecological floating bed (EC-EFB) was constructed, which showed promising performance in purifying eutrophic water. Compared to the traditional floating bed (T-EFB), EC-EFB exhibited higher nitrogen and phosphorus removal efficiency, as well as higher metabolic activity of plants. Electrocatalysis changed the microbial community and facilitated the growth of nitrogen-functional microbes. Additionally, the hydrogen evolution reaction at the cathode area facilitated phosphorus removal and inhibited phosphorus leaching.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
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)