Article
Engineering, Environmental
Mauricius Marques dos Santos, Camille Cheriaux, Shenglan Jia, Mikael Thomas, Herve Gallard, Jean-Philippe Croue, Pascal Carato, Shane Allen Snyder
Summary: This study reveals that 1,3-diphenylguanidine (DPG) and its chlorinated by-products exhibit significant toxicity and genotoxicity, affecting cell bioenergetic processes and mitochondrial function.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Hui Zhang, Junzeng Xue, Qiong Wang, Lin Yuan, Huixian Wu
Summary: Chlorination of ballast water may lead to the production of halogenated disinfection by-products (DBPs), with factors such as holding time, pH, temperature, and bromine/iodine concentration influencing their formation. A positive correlation was found between total residual oxidant consumption and the formation of halogenated DBPs. Humic acid contributed more DBPs than algae in disinfected ballast water.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2022)
Article
Engineering, Environmental
Linjie Ni, Wenshuang Sun, Jie Mao, Jinfeng Lu, Haitao Wang
Summary: Due to their excellent properties, such as non-toxicity, large surface area, bactericidal ability, and versatile surface chemistry, Ti(3)C(2)Tx MXene-based adsorbents and membranes have been extensively used in drinking water and wastewater treatment. However, it is crucial to evaluate the potential formation of disinfection by-products (DBPs) and physicochemical transformation by chlorination. This study revealed that Ti(3)C(2)Tx MXene has a high formation potential of DBPs during chlorination and chloramination processes, with the concentration of DBPs increasing with prolonged chlorine contact time. The mechanism of DBPs formation involves the destruction of Ti-C bond by chlorine and the formation of TiO2. These findings contribute to understanding the environmental risk of MXene in water treatment systems.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Engineering, Environmental
Zhi Liu, Bin Xu, Tian-Yang Zhang, Chen-Yan Hu, Yu-Lin Tang, Zheng-Yu Dong, Tong-Cheng Cao, Mohamed Gamal El-Din
Summary: In recent years, the combination of UV irradiation and chlor(am)ination process has been widely used in secondary water supply systems in many cities of China. The study found that DBPs formation in a UV-activated MCCS is influenced by factors such as the mass ratios of free chlorine to NH2Cl, pH values, NOM types, and Br- concentration. It was observed that DBPs formation decreased significantly as the mass ratio of free chlorine to NH2Cl changed. Additionally, DBPs formation was highest in water containing humic acid (HA) compared to fulvic acid (FA) and algal organic matter (AOM).
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Environmental
Shujing Ye, Xiaofei Tan, Hailan Yang, Jianhua Xiong, Hongxiang Zhu, Hainong Song, Guoning Chen
Summary: This paper investigates the impacts of microplastic pollution and the synergistic effect of microplastics and co-exposed pollutants on the ecological environment. It introduces the use of magnetic graphitized biochar as a catalyst for the removal of harmful pollutants, specifically tetrabromobisphenol A (TBBPA), from microplastics. Additionally, the study examines the changes in microplastic surface and structure caused by aging processes and their effects on pollutant attachment and removal efficiency.
Review
Environmental Sciences
Muammar Qadafi, Raden Tina Rosmalina, Mariska M. Pitoi, Diana Rahayuning Wulan
Summary: This review discusses the potential precursors, formation, and toxicity of disinfection by-products (DBPs), as well as the available research on their treatment in Southeast Asian countries' water sources. It is found that natural organic matter (NOM) like humic and fulvic acids is the major precursor of DBPs formation, while anthropogenic organic matter (AOM) also plays a significant role when using chlorine for disinfection. NOM and AOMs, including microplastics, pharmaceuticals, pesticides, and endocrine-disrupting chemicals (EDCs), have been detected in water sources in Southeast Asian countries. Studies have focused on regulated DBPs, but the formation potential of unregulated DBPs and the effectiveness of treatments like conventional coagulation, filtration, adsorption, and ozonation in reducing DBPs formation potential are also discussed.
Article
Engineering, Environmental
Yating Zhu, Jianxin Nie, Xin Yang, Xiaohong Guan
Summary: Treatment of TBBPA with Fe(VI)-CaSO3 can effectively remove TBBPA, reduce the toxic risk of DBPs, and has the potential for practical application in water treatment.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Green & Sustainable Science & Technology
Bo Liu, Baiyu Zhang, Guihua Dong, Fei Wu, Bing Chen
Summary: Chlorination is a commonly used technique for drinking water disinfection, but it can produce disinfection by-products (DBPs) that threaten water safety. This study introduces environmental microfluidics to a UVA-LED photocatalytic oxidation system for the rapid oxidation of organic matter. The results show that low pH conditions favor the adsorption and degradation of organic matter. The microreactor effectively reduces DBP formation potential and increases water purification efficiency.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Engineering, Chemical
Qian Hu, Ruigang Wang, Yanshun Gan, Ying Zhang, Huanzhong Bao, Lianbao Zhang, Guangzhou Qu, Tiecheng Wang
Summary: This study investigated the effects of plasma treatment on the removal of dissolved organic matters (DOM) and the formation of chlorinated disinfection by-products (DBPs). The results showed that plasma oxidation could effectively reduce the content of high aromatic DOM and decrease the formation and toxicity of DBPs. However, more attention should be paid to the toxicity of N-DBPs with low C/N ratio.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Xin Huang, Ying Yu, Huan Chen, Huikai Liang, Mengze Geng, Baoyou Shi
Summary: This study investigated the interaction between chlorine and PAC in DBP formation, revealing that PAC can react with chlorine to form THMs and HAAs, with PAC adsorption playing a critical role in DBP control. Additionally, the reaction products formed between PAC and chlorine may be more toxic than traditional DBPs.
Article
Engineering, Environmental
Andre Luis Correa de Barros, Daniel Aparecido da Silva Rodrigues, Camila Cristina Rodrigues Ferreira da Cunha, Igor Aparecido Santana das Chagas, Daiana Rocha do Espirito Santo, Silvana de Queiroz Silva, Robson Jose de Cassia Franco Afonso
Summary: This study evaluated the degradation, mineralization, and DBPs formation of the widely used herbicide metribuzin during aqueous chlorination. The results showed that DBPs formed during chlorination were more toxic than the precursor metribuzin, with increased toxicity effects on Anemia salina nauplii. Additionally, chlorinated solutions exhibited high estrogenicity to human receptors and mutagenic and developmental toxicant effects in BLYES and Q(SAR) tests.
Article
Environmental Sciences
Yingyang Wang, Fangyuan Peng, Ruiyang Zhao, Xuelian Dong, Zhaoguang Yang, Haipu Li
Summary: Boiling is a popular household water treatment method that can effectively remove some disinfection by-products (DBPs). However, the behavior of DBPs during boiling is still unclear. This study monitored the changes in DBP concentrations and discussed their removal and transformation. The results showed that boiling removed volatile DBPs but was ineffective for non-volatile DBPs. The transformations among DBPs were significantly influenced by other co-existing DBPs.
Article
Environmental Sciences
Siqi Chen, Shanze Shang, Qi Zhao, Shaojie Zhang, Wu Yang
Summary: Graphene-silica composites showed excellent adsorption properties for humic acid and disinfection by-product precursors in natural surface water. The adsorption and removal rates of humic acid were higher compared to reduced graphene oxide. The adsorption process followed quasi-secondary kinetic model and Langmuir isothermal adsorption model. Graphene-silica composites exhibited good adsorption performance for organic matter in different water qualities and maintained high organic removal efficiency even after multiple cycles of reuse.
Article
Engineering, Environmental
Zhenqi Du, Shunke Ding, Rong Xiao, Chao Fang, Ruibao Jia, Wenhai Chu
Summary: Sandstorms during the dry season can introduce large amounts of pollutants into surface waters, potentially leading to the formation of disinfection by-products. This study found that sandstorm-derived dissolved organic matter (DOM) mainly consists of low-molecular-weight, low-aromaticity, high-nitrogen organic matter, with a dissolved organic carbon (DOC) release yield of 14.4 mg-DOC/g. The formation potential of halogenated disinfection by-products from sandstorm-derived DOM was comparable to that of surface water, but the associated toxicity was 1.96 times higher. The impact of sandstorms on surface water quality should be of concern due to their high frequency and the sorption of other organic pollutants by sand and dust.
Article
Environmental Sciences
Lu Wang, Yaqun Yu, Guoqiang Liu, Junhe Lu
Summary: This study investigated the degradation of Tetrabromobisphenol S (TBBPS) in the presence of Co2+ activated peroxymonosulfate (PMS), and examined the formation of brominated by-products. It was found that TBBPS can be effectively removed, but leads to the formation of brominated by-products. The presence of natural organic matter inhibits the transformation of TBBPS.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
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)