Article
Engineering, Environmental
Qi Cheng, Qingrui Li, Xiaojie Huang, Xiaoqin Li, Yunyan Wang, Weizhen Liu, Zhang Lin
Summary: In this study, cauliflower-like amorphous nanoscale zero-valent iron (A-nZVI) was prepared and found to have better performance for the removal of Sb(III) compared to nZVI. A-nZVI showed higher removal capacity and selectivity for Sb(III) and was less affected by interfering anions. The findings contribute to the remediation of Sb(III) in groundwater.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Tingting Yue, Yuankun Yang, Shu Chen, Jun Yao, Huili Liang, Liang Jia, Kaibin Fu, Zhe Wang
Summary: In this study, a novel composite of Chlorella vulgaris-supported nanoscale zero-valent iron (CV-nZVI) was reported for efficient removal of As(III) from contaminated water. The stabilization effect of C. vulgaris reduced the agglomeration of nZVI and enhanced its reactivity. The CV-nZVI showed a removal efficiency of 99.11% for As(III) at an optimal pH of 7.0, and exhibited reusability and regeneration capabilities.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Peiyuan Deng, Guangzhou Wang, Changkan Li, Shentang Dou, Wei Yuan
Summary: Nano zero-valent iron-supported biochar pellets synthesized via liquid-phase reduction showed promising performance in estrogen removal. The adsorption equilibrium was reached within 10 minutes, with adsorption capacity decreasing with increasing solute pH and pellets dosage, while adsorptivity increasing with initial estrogen concentration.
WATER SCIENCE AND TECHNOLOGY
(2022)
Article
Environmental Sciences
Beibei Zhang, Junshen Liu, Ru-Song Zhao, Qiming Xian
Summary: Nitrosamines are a type of emerging nitrogenous disinfection by-products that have raised concerns due to their carcinogenic and genotoxic properties. This study introduced a new material, nZVI@Ag-MONTs, which showed excellent ability to adsorb and degrade N-dimethylnitrosamine (NDMA) in water. The material remained stable and reusable, making it a promising option for NDMA removal in water.
Article
Engineering, Environmental
Jakkapop Phanthasri, Dickson Yuk-Shing Yan, Kitirote Wantala, Rattabal Khunphonoi, Pummarin Khamdahsag, Visanu Tanboonchuy
Summary: Excessive levels of selenium in water are mainly caused by fossil fuels combustion, coal-fired power plant activity, and mining operations. Selenium contamination poses significant risks to human health. Zeolite-supported nanoscale zero-valent iron coated onto bentonite-zeolite pellets has shown promising potential for the removal of selenium in contaminated water.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Environmental Sciences
Beibei Zhang, Ye Tian, Junshen Liu, Xuezhen Gao, Hui Zheng
Summary: A novel material, nZVI@MIL-96, was synthesized and applied for the adsorption-degradation of TCNM in water, showing high stability and reusability. The removal of TCNM followed a pseudo-first-order model, with minimal effects from chloride and carbonate ions.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Liang Dai, Kai Meng, Weifan Zhao, Tao Han, Zhenle Lei, Gui Ma, Xia Tian, Jun Ren
Summary: In this study, attapulgite-supported nano zero-valent iron (nZVI@ATP) was synthesized and used for Pb2+ remediation in aqueous solution. The adsorption performance of nZVI@ATP for Pb2+ was improved, and the mechanism included reduction, precipitation, and complex formation.
Article
Chemistry, Physical
Zhicheng Dong, Yunyun Xu, Can Wu, Jin Chao, Chen Tian, Zhang Lin
Summary: In this study, a novel method for removing natural organo-chromium (NOCr) was demonstrated by transforming it into structures similar to Cr-Fe minerals in nature using nano zero-valent iron (nZVI). The process involved adsorption, decomplexation, and re-immobilization stages, resulting in a high removal efficiency of chromium glycinate (Cr-Gly) under ambient conditions. This research provided a new and efficient approach for mitigating chromium pollution in the environment.
Article
Environmental Sciences
Yuping Han, Huanhuan Xu, Guangzhou Wang, Peiyuan Deng, Lili Feng, Yaoshen Fan, Jiaxin Zhang
Summary: This study summarized the preparation, characterization, and application of biochar and nZVI-biochar composite for estrogens removal. The experiment results showed that nZVI-biochar exhibited superior removal performance for estrogens pollutants compared to biochar. The adsorption kinetics of estrogens on nZVI-biochar followed the quasi-second-order model, and the adsorption isotherm could be well represented by the Freundlich model.
Article
Environmental Sciences
Yan Xu, Zheming Liu, Kexin Ma, Qingdong Qin
Summary: Nanoscale zero-valent iron (nZVI) based materials are considered as promising materials for groundwater remediation. An improved synthesis method was developed, which increased the iron content and utilization of reactants, leading to improved performance of the material.
Article
Environmental Sciences
Osama Eljamal, Ramadan Eljamal, Ibrahim Maamoun, Ahmed M. E. Khalil, Tamer Shubair, Omar Falyouna, Yuji Sugihara
Summary: The study focused on developing a magnetic nanoscale zero-valent iron/zeolite (nZVI/Z) composite for efficient removal of ammonia-nitrogen (NH4+-N) from water. Batch experiments revealed optimal conditions and removal mechanisms for effective NH4+-N removal with nZVI/Z.
Article
Chemistry, Physical
Ibrahim Maamoun, Ramadan Eljamal, Omar Falyouna, Khaoula Bensaida, Yuji Sugihara, Osama Eljamal
Summary: The study found that Langmuir isotherm and pseudo 2nd order kinetic model were the best models to describe the removal of phosphorus by nanoscale zero-valent iron (NZVI). The research also confirmed the applicability of the proposed models in interpreting the experimental data and revealed the involvement of chemisorption mechanism in the removal process. Additionally, thermodynamic analysis showed the endothermic nature in the NZVI/P system and the occurrence of sorption and reaction rate analysis on two main diffusion steps.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Engineering, Environmental
Xin Zhang, Hongxing Xu, Min Xi, Zhixiang Jiang
Summary: Remediation of Cr(VI) pollution by nanoscale zero-valent iron-loaded biochar (nZVI-BC) is a hot research topic. The interaction between natural organic matter (NOM) and Cr(VI) on their adsorption on nZVI-BC was investigated. nZVI-BCs with different ratios of Fe:C were prepared, and the optimal Fe:C ratio was determined to be 3:1. Adsorption experiments showed a strong competitive adsorption between Cr(VI) and NOM. Characterization techniques revealed the mechanisms behind the decreased Cr(VI) reduction and adsorption, as well as the decreased adsorption of NOM.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Environmental Sciences
Jing Liu, Airong Liu, Jie Guo, Tao Zhou, Wei-xian Zhang
Summary: Modifications using different types of polyacrylamide (PAM) enhanced the sedimentation efficiency of nano zero-valent iron (nZVI) in a nano-iron reactor, improving processing capacity and maintaining reactivity for a longer period in wastewater treatment.
Article
Engineering, Environmental
Takuya Ogawa, Yoshinori Kawase
Summary: The study demonstrated that nZVI mainly removes SDBS through ionic adsorption of anionic SDBS onto the positively charged nZVI surface, with different mechanisms and removal efficiencies at different pH values.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(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)