Article
Geosciences, Multidisciplinary
Lezhang Wei, Yu Liu, Dafeng Cai, Fangqing Li, Dinggui Luo, Cheng Li, Guoliang Xu, Tangfu Xiao, Qihang Wu, Huixian He, Joyanto Routh
Summary: River morphology is important in redistributing potentially toxic elements in AMD-contaminated rivers. The study provides insights into the implications of river morphology on remediating AMD pollution and identifies contamination hotspots.
Article
Environmental Sciences
Abhijit Debnath, Prabhat Kumar Singh, Yogesh Chandra Sharma
Summary: This review article compares the heavy metal concentration in water and sediments of 43 global rivers, discussing the risks, mechanisms and removal methods associated with heavy metal contamination. The dynamics of metal movement between water and sediments are influenced by various factors such as physical, chemical, biological, hydrological and environmental. The study also evaluates the performance of different remediation technologies adopted by researchers from 2003 to 2019, highlighting the preference for in-situ remediation due to its cost-effectiveness and time-saving benefits.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Environmental Sciences
Sina Shahabi-Ghahfarokhi, Mahboubeh Rahmati-Abkenar, Leonie Jaeger, Sarah Josefsson, Henric Djerf, Changxun Yu, Mats Astroem, Marcelo Ketzer
Summary: This study investigates the release of metals during the oxidation of sediments in anoxic areas. Results show that several metals are released into the water column during the reoxygenation process, and some of them are found in higher concentrations than previously measured in the area.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Green & Sustainable Science & Technology
Changsong Zhang, Xueke Zang, Zhenxue Dai, Xiaoying Zhang, Ziqi Ma
Summary: This study compared three remediation techniques for cadmium-contaminated soil: stabilization, soil leaching, and phytoremediation. The results showed that soil leaching was the most effective technique for treating Cd contamination in dredged river sediments after land disposal.
Article
Environmental Sciences
Chin Yik Lin, Bibi Noorarlijannah Mohammad Ali, Rohana Tair, Baba Musta, Mohd Harun Abdullah, Fera Cleophas, Feona Isidore, Mohd Shahrul Mohd Nadzir, Muhammad Hatta Roselee, Ismail Yusoff
Summary: The study investigates the effects of metals mobility derived from mining activities on ultramafic lithology. The results show that the distance has a significant impact on the adsorption and precipitation of metals in the sediment, leading to a decrease in the concentration of potentially toxic metals downstream. This study also highlights the potential risk of asbestos in ultramafic settings.
ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
S. Xie, C. Yu, B. Peng, H. Xiao, W. Zhang, Z. Zhou, M. E. Astrom
Summary: This study reassesses the environmental impacts of the Dexing copper mine in China, focusing on metal pollution and the effectiveness of remediation activities. The results show that the river system is heavily influenced by acid mine drainage and contains elevated levels of metals. Remediation practices have led to a decrease in metal concentrations, but have also increased sulfate release.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Environmental Sciences
Leonomir Cordoba-Tovar, Jose Marrugo-Negrete, Pablo Andres Ramos Baron, Sergi Diez
Summary: The Atrato River basin, an important tropical biome, has suffered severe ecological deterioration due to gold mining, posing threats to wildlife and human health. This study measured the concentrations of mercury and arsenic in sediments and assessed the associated ecological and human health risks. The results showed moderate contamination levels of mercury and increasing contamination of arsenic, indicating potential toxic risks to aquatic biota and adverse effects on human populations, particularly children.
ENVIRONMENTAL RESEARCH
(2023)
Article
Engineering, Environmental
Yuliang Tu, Dongye Zhao, Yanyan Gong, Zhiliang Li, Hong Deng, Xueming Liu
Summary: Soil contamination by heavy metals and metalloids is a significant environmental challenge. This study tested a novel remediation technology using a ternary amending agent to immobilize arsenic and lead in contaminated soil. The results show that the amending agent effectively reduced the leachable concentrations of arsenic and lead in the soil.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Shan Gao, Xiong Yang, Yucheng Ding, Yihui Xia, Yumiao Song, Jiaying Liu, Kewu Pi, Andrea R. Gerson
Summary: In this study, a combination of electrokinetic and chemical immobilization was used to remediate Cd and Pb polluted river sediments. The immobilization ratios for Cd and Pb were achieved by adjusting the concentrations of the immobilization reagents and the applied voltage. The enhancement effect of the electric field is mainly due to the increased contact between the immobilization reagents and the heavy metals.
Article
Environmental Sciences
Daniel Santos Mulholland, Jeremie Garnier, Daniel Ferreira Araujo, Welton Climaco Duarte, Gael Monvoisin, Cecile Quantin, Remi Freydier, Patrick Seyler
Summary: This study investigates the dynamics of metal and metalloid concentrations in the estuarine water of the Doce River in Brazil, particularly examining the effects of the collapse of an iron ore-processing tailing dam on particulate and dissolved metal(loid) concentrations. The results show that the dam failure resulted in increased concentrations of various metals, exceeding quality and regulatory guidelines and posing potential health risks to local communities.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Xiaohong Fang, Bo Peng, Zhaoliang Song, Sicheng Wu, Danting Chen, Yafang Zhao, Jing Liu, Yanan Dai, Xianglin Tu
Summary: Analysis of major and trace elements in sediments from the Four River inlets of Dongting Lake revealed differences in element compositions, which are influenced by source lithology, chemical weathering, hydrological sorting, and anthropogenic processes. The findings suggest the need for a geochemical background scheme for future assessment of heavy metal contamination in the watershed sediments.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Wencheng Qi, Yang Shen, Shaoyu Li, Kaijia Chen
Summary: This study developed a detachable test system based on the methods of electro-osmosis, vacuum, and vacuum electro-osmosis to treat metal-contaminated sediment. Experiments were conducted to assess the reduction and remediation of dredged sediment under pollution-free and Cu-contaminated conditions. The results showed that copper contamination weakened the reduction effect and led to soil cracking and blocked drainage channels. Vacuum electro-osmosis achieved the best remediation effect, with removal rates of 45.1% and 50.0% at the anode and cathode, respectively.
APPLIED SCIENCES-BASEL
(2023)
Article
Environmental Sciences
Il-Gyong Kim, Yong-Bom Kim, Ryong-Hung Kim, Tong-Su Hyon
Summary: This study focused on investigating the spatial distribution, contamination and origin of heavy metals in the surface sediments of Jangsong tidal flat in Kangryong river estuary, DPR Korea. The findings showed that the heavy metals had diverse sources, with some metals originating from lithogenic sources and others from anthropogenic sources. Despite slight enrichments in some metals, the overall conclusion was that the area was not heavily polluted and had low ecological risk.
MARINE POLLUTION BULLETIN
(2021)
Article
Environmental Sciences
Zahra Arabi, Joerg Rinklebe, Ali El-Naggar, Deyi Hou, Ajit K. Sarmah, Eduardo Moreno-Jimenez
Summary: Biochar shows promise in immobilizing trace elements in contaminated soils, but the effect on arsenic mobilization may be negative while it efficiently immobilizes chromium and nickel. Factors such as pyrolysis conditions, organic matter content, and feedstock influence the effectiveness of biochar in immobilizing trace elements in contaminated soils.
ENVIRONMENTAL POLLUTION
(2021)
Article
Geosciences, Multidisciplinary
Fang Xia, Xiang Niu, Liyin Qu, Randy A. Dahlgren, Minghua Zhang
Summary: Integrated source apportionment and risk assessment for metals in urban watersheds is crucial for pollution control, with risk assessment indicating high levels for copper and cadmium, and different toxicity coefficients influencing total risk levels.