Dissolved organic matter reduces the effectiveness of sorbents for mercury removal.
Contamination
Mercury
Organic matter
Remediation
Sorbents
Journal
The Science of the total environment
ISSN: 1879-1026
Titre abrégé: Sci Total Environ
Pays: Netherlands
ID NLM: 0330500
Informations de publication
Date de publication:
10 Nov 2019
10 Nov 2019
Historique:
received:
16
04
2019
revised:
27
06
2019
accepted:
01
07
2019
pubmed:
13
7
2019
medline:
13
7
2019
entrez:
13
7
2019
Statut:
ppublish
Résumé
Mercury (Hg) contamination of soils and sediments impacts numerous environments worldwide and constitutes a challenging remediation problem. In this study, we evaluate the impact of dissolved organic matter (DOM) on the effectiveness of eight sorbent materials considered for Hg remediation in soils and sediments. The materials include both engineered and unmodified materials based on carbon, clays, mesoporous silica and a copper alloy. Initially, we investigated the kinetics of Hg(II) complexation with DOM for a series of Hg:DOM ratios. Steady-state Hg-DOM complexation occurred within 48 to 120 h, taking longer time at higher Hg:DOC (dissolved organic carbon) molar ratios. In subsequent equilibrium experiments, Hg(II) was equilibrated with DOM at a defined Hg:DOC molar ratio (2.4 · 10
Identifiants
pubmed: 31299573
pii: S0048-9697(19)33114-6
doi: 10.1016/j.scitotenv.2019.07.001
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
410-416Informations de copyright
Copyright © 2019. Published by Elsevier B.V.