Article
Engineering, Environmental
Xiaoran Li, Yafei Shi, Kewu Pi, Andrea R. Gerson
Summary: This study investigated the kinetics and oxidation process of Fe(II)-activated sodium persulfate (SPS) treatment on waste activated sludge (WAS). It was found that both proteins (PN) and polysaccharides (PS) followed pseudo-first-order kinetics during the treatment, with preferential oxidation of EPS proteins over EPS polysaccharides. The oxidation rates of PN and PS were higher in granular sludge (GS) compared to raw sludge filtrate (RSF). Additionally, a portion of the sodium persulfate was consumed in the GS solution, reducing the number of effective free radicals for EPS degradation. The mass balance of PN and PS indicated a significant degradation effect of Fe(II)-SPS conditioning on EPS in WAS.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Xiaoran Li, Yafei Shi, Xi Zhou, Lu Wang, Huiqin Zhang, Kewu Pi, Andrea R. Gerson, Defu Liu
Summary: The study examined the impact of a composite conditioner, Fe2+/SPS combined with phosphogypsum, on sludges with varying organic and solid contents. Results showed that oxidation played a major role in conditioning, especially for higher organic matter content. Changes in phosphogypsum significantly affected the optimal molar ratio and dosage of Fe2+/SPS, with sludge containing more solids requiring higher Fe2+/SPS dosage for stronger oxidation.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Chang Bian, Dongdong Ge, Guanjun Wang, Yanting Dong, Wei Li, Nanwen Zhu, Haiping Yuan
Summary: The study introduced ultrasound-activated persulfate oxidation as a novel approach to enhance sludge dewaterability, showing significant improvements in reducing water content and capillary suction time. The treatment effectively degraded EPS matrix and attacked cells, releasing trapped moisture and promoting particle aggregation for moisture elimination. The conditioned dewatered sludge cakes met agricultural land requirements for heavy metals and showed significant changes in chemical speciation distribution.
Article
Agricultural Engineering
Pengfei Wan, Ying Liu, Quandi Zhang, Li Jiang, Heping Chen, Wenzhou Lv
Summary: Candida Tropicalis was used to improve the dewaterability of activated sludge (AS) by degrading EPS in AS, resulting in a decrease in protein, polysaccharide, and hydrophilic amino acids in EPS. The yeast degraded macromolecular organics into smaller molecular ones and direct addition of yeast to AS was more effective in EPS degradation. Addition of 0.75 g/L of wet yeast cells and 24 h of aeration enhanced the dewaterability of AS with a reduction in CST and MLSS. After 30 days of operation, lab-scale continuous SBRs reduced CST and MLSS of AS. FTIR spectroscopy showed a decrease in hydrophilic functional groups. This study presents a new approach for in-situ reduction of AS in wastewater treatment plants.
BIORESOURCE TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Wanqing Ding, Wenbiao Jin, Xu Zhou, Qinhui Yang, Chuan Chen, Qilin Wang
Summary: This study investigated the dewaterability of anaerobic granular sludge (AGS) by Fe(II)-PDS conditioning, finding that Fe(II)-PDS conditioning can enhance dewaterability by breaking down EPS layers and microbial cell structures, releasing bound water and facilitating sludge re-flocculation. Protein was identified as the primary component in AGS and showed a strong correlation with dewaterability.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Environmental Sciences
Shuyu Ruan, Jing Deng, Anhong Cai, Shengnan Chen, Yongqing Cheng, Jun Li, Qingsong Li, Xueyan Li
Summary: The study utilized the thermally-activated sodium persulfate process to improve the dewaterability of waste activated sludge, where SPS decomposition at mild temperature generated radicals that oxidized EPS and facilitated solid-liquid separation, enhancing sludge dehydration.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Engineering, Chemical
Mingyue Tang, Zhiyue Wang, Weijun Zhang, Dongsheng Wang
Summary: Thermal activated persulfate oxidation was used to improve the dewaterability of wastewater sludge by decomposing macromolecular proteins. This process was found to generate beneficial radicals and enhance sludge dewaterability.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Environmental Sciences
Gang Wang, Quancheng Shu, Yuliang Zhu, Yucan Liu, Xiaoyong Yang, Daishun Wu, Hongwei Sun
Summary: This study systematically investigated the efficiency and mechanism of thermally activated persulfate (TAP) oxidation technology in improving the dewatering performance of surplus activated sludge. The results showed that the TAP treatment significantly increased the filterability and decreased the particle size of the sludge. Additionally, it facilitated the disintegration of sludge and conversion of certain EPS components. The findings of this study provide insights into the mechanism of TAP process in enhancing sludge dewatering performance.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Guanjun Wang, Dongdong Ge, Lu Bai, Yanting Dong, Chang Bian, Jiajia Xu, Nanwen Zhu, Haiping Yuan
Summary: This study investigated the effects of electrolysis-activated persulfate oxidation on improving sludge dewaterability, achieving a significant reduction in capillary suction time and water content of dewatered sludge cake. The enhancement of sludge dewaterability was closely associated with changes in floc size, zeta potential, protein content, and viscosity, providing new insight for enhancing sludge dewaterability in sludge treatment.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Environmental Sciences
Dongdong Ge, Yidan Zhu, Guobiao Li, Haiping Yuan, Nanwen Zhu
Summary: The Fe2+-activated persulfate conditioning process plays a key role in enhancing sludge dewaterability through the destruction and re-building of sludge flocs. The findings provide theoretical and technical support for the practical engineering implementation of this process.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Engineering, Environmental
Panpan Li, Yang Yu, Lixiang Zhu, Zhanhang Zhou, Wenjie Zhang, Peng Wu, Ran Yu
Summary: A novel technique involving zero-valent iron-activated persulfate and hydrothermal treatment was proposed to enhance sludge dewaterability. The results showed that this technique significantly improved the dewaterability of sludge under optimal conditions.
WATER SCIENCE AND TECHNOLOGY
(2022)
Article
Environmental Sciences
Yang Yu, Panpan Li, Bingxing Zhu, Ye Liu, Ran Yu, Shifu Ge
Summary: The integration of hydrothermal treatment (HT) and advanced oxidation processes (AOP) has shown promise in improving sludge dewaterability. This study investigated the valorization of EPS under elevated temperature and sulfate radical-based AOP, and its effects on sludge dewaterability. Results showed that high temperature led to a significant decrease in organic matter in the inner layer of EPS, which was released into soluble EPS. AOP, especially in the presence of ZVI, greatly accelerated the degradation of organics and microbial cells. Enhanced HT under AOP resulted in the detection of proteins with higher hydrophobicity. Integrating AOP at the initial hydrothermal stage had a better synergistic effect on sludge dewaterability.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Lu Bai, Guanjun Wang, Dongdong Ge, Yanting Dong, Hui Wang, Yuhui Wang, Nanwen Zhu, Haiping Yuan
Summary: Dewatering treatment is essential for reducing sludge volume, transportation costs, and improving disposal efficiency. This study investigated the use of the ozone-peroxymonosulfate (O-3/PMS) oxidation process to enhance sludge dewaterability. The results showed that the optimal dosage of 30 mg/g TS O-3 and 0.4 mmol/g TS PMS effectively reduced the sludge capillary suction time and water content, improved sludge zeta potential, particle size, and fluidity, and enhanced sludge dewatering performance. The study also analyzed the factors responsible for the improved dewaterability, such as changes in hydrophilic substances and protein secondary structure. The study found that the O-3/PMS process reduced the concentrations of heavy metals and polycyclic aromatic hydrocarbons (PAHs) in the sludge, as well as their stability and toxicity, except for zinc.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Jing Ai, Zhiyue Wang, Dionysios D. Dionysiou, Ming Liu, Yun Deng, Mingyue Tang, Guiying Liao, Aibin Hu, Weijun Zhang
Summary: The study utilized Fe(II)-sulfite oxidation and polyacrylamide flocculation (F/S-PAM) treatment to remove the bound water in waste activated sludge and improve sludge dewaterability. The radicals generated by F/S could decompose EPS, releasing bound water, while PAM caused re-flocculation of disintegrated sludge flocs, enhancing sludge filterability.
Article
Environmental Sciences
Xiao Ling, Jing Deng, Cheng Ye, Anhong Cai, Shuyu Ruan, Minjie Chen, Xueyan Li
Summary: Fe(II)-activated sodium percarbonate (SPC) is an emerging technology for enhancing the dewaterability of waste activated sludge. Acidic conditions are beneficial for sludge dewatering, while overdosing Fe(II) or SPC can have adverse effects. The oxidation/flocculation process plays a key role in improving sludge dewaterability.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Nanoscience & Nanotechnology
Wenjie Wu, Liang Bai, Yenan Song, Yuanting Su, Kai Jiang, Haitao Sun, Guangyin Zhen, Yan Shen, Qinghong Yuan, Zhuo Sun
Summary: An advanced plasma-assisted etch strategy was used to fine tune the ozonation activity of monolayered graphene films by tailoring the defect types. The roles and contributions of different active defects in manipulating the oxidative potential of monolayered graphene films were revealed by various experiments and calculations. The results showed that monolayered graphene films with boundary-like defects exhibited the best catalytic performance.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Agricultural Engineering
Ruiliang Zhang, Xueqin Lu, Yujie Tan, Teng Cai, Yule Han, Dilibaierkezi Kudisi, Chengxin Niu, Zhongyi Zhang, Wanjiang Li, Guangyin Zhen
Summary: The study demonstrated that DMC/PDS activation can effectively enhance sludge solubilization and methane production by degrading organic biopolymers and accelerating electron transfer of microorganisms. Ultimately, this pretreatment has a significant impact on improving anaerobic bioconversion of sludge.
BIORESOURCE TECHNOLOGY
(2021)
Article
Engineering, Environmental
Guangyin Zhen, Shaojuan Zheng, Yule Han, Zhongyi Zhang, Xueqin Lu, Kai-Qin Xu
Summary: This study proposed an artificial channel in microbial electrolysis cell (MEC) to enhance proton transport and utilized H+-rich anolyte for efficient CO2 electroreduction, resulting in high CH4 yield and organic component biodegradation. The microbial community analysis identified key bacteria responsible for protein and polysaccharide degradation, as well as methane production in the dual-bioelectrode system, highlighting the potential of CO2 bioelectromethanosynthesis for biowaste refinery and energy-efficient approach.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Energy & Fuels
S. Kavitha, Yukesh R. Kannah, Guangyin Zhen, Gopalakrishnan Kumar, Rajesh J. Banu
Summary: The study found that for a solubilization level of 30%, UZP showed better results in acidification and biomethanation. Despite similar solubilization levels in samples of US and UZP, the latter demonstrated significant improvements in acidification.
Article
Energy & Fuels
Zhongyi Zhang, Xueqin Lu, Chengxin Niu, Teng Cai, Na Wang, Yule Han, Ruiliang Zhang, Yenan Song, Guangyin Zhen
Summary: Bioelectromethanogenesis has emerged as a promising approach for capturing CO2 and producing multi-carbon biofuels. Using a two-chamber bioelectrochemical cell with a hybrid skirt-shaped cathode, this study investigated the electrocatalytic performance of electroactive biofilm (EAB) in driving CO2 electromethanogenesis. The findings shed light on the potential applications of bioelectromethanogenesis and the mechanisms underlying EAB-mediated CO2 electrocatalysis.
Article
Green & Sustainable Science & Technology
Teng Cai, Xueqin Lu, Zhongyi Zhang, Wanjiang Li, Na Wang, Yizhi Zhang, Ruiliang Zhang, Guangyin Zhen
Summary: A study was conducted on the effect of weak electrical stimulation on biofilms in a bioelectrochemical anammox system. Continuous stimulation was found to enhance the electron transfer system activity and nitrogen removal, while also facilitating the secretion of extracellular polymer substances and promoting the formation of compact biofilms. Microbial analysis showed an increase in specific microorganisms, indicating the importance of weak electrical stimulation in diversifying the microbial community and creating a robust nitrogen metabolic pathway.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Environmental Sciences
Yujie Tan, Ruiliang Zhang, Xueqin Lu, Chengxin Niu, Guangyin Zhen, Gopalakrishnan Kumar, Youcai Zhao
Summary: Sludge management is a critical challenge due to complex compositions and poor dewaterability. Fe2+-activated persulfate oxidation has been proven effective in enhancing sludge dewatering, with potential benefits for sludge drying efficiency, anaerobic biodegradation behaviors, and sludge recycling. The study proposes a new sludge disposal route that includes enhanced dewatering using Fe2+/S2O82- and subsequent drying-incineration or anaerobic digestion, providing a novel, self-sustainable strategy for sludge management, reutilization, and safe disposal.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Engineering, Environmental
Dilibaierkezi Kudisi, Xueqin Lu, Chaoting Zheng, Yue Wang, Teng Cai, Wanjiang Li, Lingtan Hu, Ruiliang Zhang, Yizhi Zhang, Guangyin Zhen
Summary: The study investigated the treatment of PTA wastewater using a lab-scale HF-AnMBR, showing stable COD removal efficiency and methane production rate, while shortening the HRT resulted in decreased treatment efficiency and membrane fouling. Analysis indicated changes in microbial diversity and richness with variation of HRT, with certain methanogens consistently dominant in methane production.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Green & Sustainable Science & Technology
J. Rajesh Banu, R. Yukesh Kannah, M. Dinesh Kumar, Preethi, S. Kavitha, M. Gunasekaran, Guangyin Zhen, Mukesh Kumar Awasthi, Gopalakrishnan Kumar
Summary: Coffee consumption leads to the generation of large amounts of spent coffee grounds (SCG), which contains various valuable components. Valorisation of SCG through integrated biorefinery approach not only brings more valuable products, but also enhances environmental sustainability and economic benefits. The future perspective of SCG biorefinery shows the potential for higher production of bioactive compounds and bioenergy, contributing to the development of a circular bioeconomy.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Engineering, Environmental
Xueqin Lu, Jianhui Wang, Yule Han, Yan Zhou, Yenan Song, Ke Dong, Guangyin Zhen
Summary: This study investigates the effect of in-situ Fe(II)/S2O82- oxidation on the filtration performance and membrane fouling behaviors in membrane bioreactor (MBR) for waste activated sludge treatment. The results show that Fe(II)/S2O82- oxidation significantly improves the filterability of mixed sludge liquor and alleviates membrane fouling by breaking down biopolymer matrix and releasing water from flocs. The study suggests that Fe(II)/S2O82- oxidation is a promising approach to control membrane fouling and treat sludge efficiently.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Zhongxiang Zhi, Yang Pan, Xueqin Lu, Jianhui Wang, Guangyin Zhen
Summary: Bioelectrochemical regulation is an effective strategy to enhance anaerobic digestion and methane production. It selectively enriches electroactive fermentative microbes and methanogens, promoting the decomposition of complex organics and the generation of methane.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Chemistry, Multidisciplinary
Wenjie Wu, Saiyu Bu, Liang Bai, Yuanting Su, Yenan Song, Haitao Sun, Guangyin Zhen, Ke Dong, Lunhua Deng, Qinghong Yuan, Chengbin Jing, Zhuo Sun
Summary: Non-thermal plasma (NTP) degradation of volatile organic compounds (VOCs) into CO2 and H2O is a promising strategy for addressing environmental pollution. However, its implementation is hindered by low conversion efficiency and emissions of noxious by-products. In this study, an advanced low-oxygen-pressure calcination process was developed to tune the oxygen vacancy concentration of TiO2 nanocrystals. Vo-rich TiO2 showed superior catalytic activity in the degradation of toluene, achieving a maximum elimination efficiency of 96% and COx selectivity of 76% at an SIE of 540 J L-1. Mechanistic analysis revealed the contribution of O-1(2), O-2(-), and OH species derived from Vo sites in the decomposition of toluene. The roles of oxygen vacancies in manipulating post-NTP systems were explored, providing insights for the design of high-efficiency NTP catalysts with active Vo sites.
Article
Chemistry, Physical
Rajesh J. Banu, S. Sugitha, S. Kavitha, Yukesh R. Kannah, Sang-Hyoun Kim, Guangyin Zhen, Gopalakrishnan Kumar
Summary: This study evaluated and compared the impact of different solubilizations induced by two pretreatment methods on biomethanation of aquatic phytomass. The results showed that disperser coupled Triton X 100 pretreatment enhanced methane production and biodegradability, with profitable energy and cost-benefit ratios compared to disperser assisted pretreatment.
SUSTAINABLE ENERGY & FUELS
(2022)
Article
Chemistry, Multidisciplinary
Lianghu Su, Mei Chen, Saier Wang, Rongting Ji, Chenwei Liu, Xueqin Lu, Guangyin Zhen, Longjiang Zhang
Summary: Fluorescence excitation-emission matrix (EEM) spectroscopy was used to analyze the fluorescence characteristics of dissolved organic matter (DOM) during anaerobic digestion of oil crop straw inoculated with rumen liquid, revealing three major fluorescence components and tracking their changes. The biodegradation of lignin and cellulose within DOM was reflected by the variation in F-max values of fluorescence components, while the shift in fluorescence peak Stokes shift indicated changes in the hydrophobic/hydrophilic nature of DOM.
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)
