Chemical extraction of trace elements from dredged sediments into a circular economy perspective: Case study on Malmfjärden Bay, south-eastern Sweden

Worldwide, sediments are dredged from water bodies to guarantee proper water levels and remediate aquatic ecosystems. Dredged sediments contain metals that could interfere with recycling if the concentrations overpass permissible limits. Washing of elements from sediments represents a technique to d...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Laura Ferrans, Yahya Jani, William Hogland
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Sediments Chelating agents Metals Extraction Circular economy Environmental sciences GE1-350 Environmental effects of industries and plants TD194-195
Acceso en línea:	https://doaj.org/article/9c223ca4aab64e40a23f27da9790a78e
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:9c223ca4aab64e40a23f27da9790a78e
record_format	dspace
spelling	oai:doaj.org-article:9c223ca4aab64e40a23f27da9790a78e2021-11-26T04:42:14ZChemical extraction of trace elements from dredged sediments into a circular economy perspective: Case study on Malmfjärden Bay, south-eastern Sweden2666-916110.1016/j.resenv.2021.100039https://doaj.org/article/9c223ca4aab64e40a23f27da9790a78e2021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2666916121000268https://doaj.org/toc/2666-9161Worldwide, sediments are dredged from water bodies to guarantee proper water levels and remediate aquatic ecosystems. Dredged sediments contain metals that could interfere with recycling if the concentrations overpass permissible limits. Washing of elements from sediments represents a technique to decrease the concentration of metals, and it could introduce a new source of elements. The current study aimed to employ ethylenediamine-tetraacetic acid (EDTA) and ethylenediamine-disuccinic acid (EDDS) and investigate the effect of operational parameters (concentration and pH) on the chemical extraction of metals from dredged sediments. Core sediments were extracted from sampling stations around Malmfjärden bay, Sweden. The results suggested that lead, zinc and copper were the elements with higher extraction rates, followed by arsenic and nickel. Chromium was poorly extracted. EDTA was more efficient than EDDS in dissolving the elements. Moreover, acidic conditions offered higher extraction rates for As using both chelators and for Pb employing EDTA. The 0.05 M concentration presented a higher mean extraction rate than 0.01 M for Cu, Cr and Ni for EDTA and EDDS. The findings in this study suggest that sediment washing is a promising technique to decrease metal concentrations in sediments and enhancing the feasibility to use the material for beneficial uses.Laura FerransYahya JaniWilliam HoglandElsevierarticleSedimentsChelating agentsMetalsExtractionCircular economyEnvironmental sciencesGE1-350Environmental effects of industries and plantsTD194-195ENResources, Environment and Sustainability, Vol 6, Iss , Pp 100039- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Sediments Chelating agents Metals Extraction Circular economy Environmental sciences GE1-350 Environmental effects of industries and plants TD194-195
spellingShingle	Sediments Chelating agents Metals Extraction Circular economy Environmental sciences GE1-350 Environmental effects of industries and plants TD194-195 Laura Ferrans Yahya Jani William Hogland Chemical extraction of trace elements from dredged sediments into a circular economy perspective: Case study on Malmfjärden Bay, south-eastern Sweden
description	Worldwide, sediments are dredged from water bodies to guarantee proper water levels and remediate aquatic ecosystems. Dredged sediments contain metals that could interfere with recycling if the concentrations overpass permissible limits. Washing of elements from sediments represents a technique to decrease the concentration of metals, and it could introduce a new source of elements. The current study aimed to employ ethylenediamine-tetraacetic acid (EDTA) and ethylenediamine-disuccinic acid (EDDS) and investigate the effect of operational parameters (concentration and pH) on the chemical extraction of metals from dredged sediments. Core sediments were extracted from sampling stations around Malmfjärden bay, Sweden. The results suggested that lead, zinc and copper were the elements with higher extraction rates, followed by arsenic and nickel. Chromium was poorly extracted. EDTA was more efficient than EDDS in dissolving the elements. Moreover, acidic conditions offered higher extraction rates for As using both chelators and for Pb employing EDTA. The 0.05 M concentration presented a higher mean extraction rate than 0.01 M for Cu, Cr and Ni for EDTA and EDDS. The findings in this study suggest that sediment washing is a promising technique to decrease metal concentrations in sediments and enhancing the feasibility to use the material for beneficial uses.
format	article
author	Laura Ferrans Yahya Jani William Hogland
author_facet	Laura Ferrans Yahya Jani William Hogland
author_sort	Laura Ferrans
title	Chemical extraction of trace elements from dredged sediments into a circular economy perspective: Case study on Malmfjärden Bay, south-eastern Sweden
title_short	Chemical extraction of trace elements from dredged sediments into a circular economy perspective: Case study on Malmfjärden Bay, south-eastern Sweden
title_full	Chemical extraction of trace elements from dredged sediments into a circular economy perspective: Case study on Malmfjärden Bay, south-eastern Sweden
title_fullStr	Chemical extraction of trace elements from dredged sediments into a circular economy perspective: Case study on Malmfjärden Bay, south-eastern Sweden
title_full_unstemmed	Chemical extraction of trace elements from dredged sediments into a circular economy perspective: Case study on Malmfjärden Bay, south-eastern Sweden
title_sort	chemical extraction of trace elements from dredged sediments into a circular economy perspective: case study on malmfjärden bay, south-eastern sweden
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/9c223ca4aab64e40a23f27da9790a78e
work_keys_str_mv	AT lauraferrans chemicalextractionoftraceelementsfromdredgedsedimentsintoacirculareconomyperspectivecasestudyonmalmfjardenbaysoutheasternsweden AT yahyajani chemicalextractionoftraceelementsfromdredgedsedimentsintoacirculareconomyperspectivecasestudyonmalmfjardenbaysoutheasternsweden AT williamhogland chemicalextractionoftraceelementsfromdredgedsedimentsintoacirculareconomyperspectivecasestudyonmalmfjardenbaysoutheasternsweden
_version_	1718409796109991936

Chemical extraction of trace elements from dredged sediments into a circular economy perspective: Case study on Malmfjärden Bay, south-eastern Sweden

Ejemplares similares