Sorbed metals fractionation and risk assessment of release in river sediment and particulate matter.

Environmental Monitoring and Assessment
M SaeediA J Zanjani

Abstract

Fractionation of metals in natural sediment and suspended particulate matter (SPM) of Tadjan River is investigated. Competitive sorption, sorption capacities of sediment and SPM as well as fractionation of metal-loaded sediment and SPM are also examined. A risk assessment code (RAC) is applied to estimate the risk of heavy metals release into the environment during the sorption process. Results revealed that sediments and SPM containing more than 25 % of clay minerals and higher amounts of calcite have great capacity of metal sorption, particularly for Cu, Ni, and Mn. Assessing the risk of metals release prior to and following sorption tests indicates that RAC of metals would significantly increase from the level of no or low risk in natural sediment and SPM to high or very high risk after sorption. The Langmuir model reveals that the highest affinity for Cu, Mn, and Ni in sediment is the organic fraction. The classic isotherm models of Freundlich and Langmuir can fit the data from chemical extraction studies of adsorbed metals, indicating that although sorption was apparently a physical and chemical process in the river, isotherm models can be used to simulate the sorption and accumulation in different geochemical phases withi...Continue Reading

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Citations

Sep 1, 2014·Environment International·Chang ZhangLiang Hu
Mar 18, 2016·The Science of the Total Environment·Juan Manuel Trujillo-GonzálezRaimundo Jiménez-Ballesta
Apr 6, 2017·Environmental Science and Pollution Research International·Safaa A KadhumRohasliney Binti Hashim
Jun 12, 2017·Marine Pollution Bulletin·Abdolreza Karbassi, Ali Marefat
Nov 28, 2017·Environmental Monitoring and Assessment·Alexandre GuittardKenneth R Young
Apr 21, 2019·Environmental Science and Pollution Research International·Mingyan ShiYaoqian Chen
Apr 30, 2020·Environmental Science and Pollution Research International·Tatjana MijošekMarijana Erk
Jan 5, 2019·Environmental Science and Pollution Research International·Ali MarefatTouraj Nasrabadi
May 26, 2017·Environmental Science and Pollution Research International·Ahmad Jamshidi-Zanjani, Mohsen Saeedi
Nov 24, 2021·Environmental Geochemistry and Health·Vinod Kumar, Maja Radziemska

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