Kinetics of Cu, Pb and Zn removal during soil flushing with washing agents derived from sewage sludge

Abstract This paper presents the first tests of Cu (7875 mg/kg), Pb (1414 mg/kg) and Zn (566 mg/kg) removal from contaminated soil with sewage-sludge–derived washing agents (SS_WAs) (dissolved organic matter, DOM; soluble humic-like substances, HLS; soluble humic substances, SHS) and Na2EDTA (as a s...

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Autores principales:	Barbara Klik, Zygmunt M. Gusiatin, Dorota Kulikowska
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e6f3262b812e4e20b1e22941ef7dd711
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spelling	oai:doaj.org-article:e6f3262b812e4e20b1e22941ef7dd7112021-12-02T15:43:09ZKinetics of Cu, Pb and Zn removal during soil flushing with washing agents derived from sewage sludge10.1038/s41598-021-89458-z2045-2322https://doaj.org/article/e6f3262b812e4e20b1e22941ef7dd7112021-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-89458-zhttps://doaj.org/toc/2045-2322Abstract This paper presents the first tests of Cu (7875 mg/kg), Pb (1414 mg/kg) and Zn (566 mg/kg) removal from contaminated soil with sewage-sludge–derived washing agents (SS_WAs) (dissolved organic matter, DOM; soluble humic-like substances, HLS; soluble humic substances, SHS) and Na2EDTA (as a standard benchmark) in column experiments. Flow rates of 0.5 ml/min and 1 ml/min were used. Using a 1. order kinetic model, the kinetic constant (k), the maximum concentrations of each metal removed (C max), and the initial rates of metal removal (r) were established. At both flow rates, stable flow velocity was maintained for approximately eight pore volumes, for flushing times of 8 h (1.0 ml/min) and 16 h (0.5 ml/min). Although the flow rate did not influence k, it influenced C max: at 1 ml/min, C max values were higher than at 0.5 ml/min. For Cu and Zn, but not Pb, k was about twofold higher with Na2EDTA than with SS_WAs. Although Na2EDTA gave the highest k Cu, C max,Cu was highest with DOM (Na2EDTA, 66%; DOM 73%). For Pb removal, HLS was the most effective SS_WA (77%; Na2EDTA was 80% effective). k Zn was about twofold higher with Na2EDTA than with SS_WAs. C max,Zn was highest with HLS. The quick mobilization of Cu, Pb and Zn with most of the WAs corresponded to efficient metal removal from the exchangeable (F1) fraction.Barbara KlikZygmunt M. GusiatinDorota KulikowskaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-15 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Barbara Klik Zygmunt M. Gusiatin Dorota Kulikowska Kinetics of Cu, Pb and Zn removal during soil flushing with washing agents derived from sewage sludge
description	Abstract This paper presents the first tests of Cu (7875 mg/kg), Pb (1414 mg/kg) and Zn (566 mg/kg) removal from contaminated soil with sewage-sludge–derived washing agents (SS_WAs) (dissolved organic matter, DOM; soluble humic-like substances, HLS; soluble humic substances, SHS) and Na2EDTA (as a standard benchmark) in column experiments. Flow rates of 0.5 ml/min and 1 ml/min were used. Using a 1. order kinetic model, the kinetic constant (k), the maximum concentrations of each metal removed (C max), and the initial rates of metal removal (r) were established. At both flow rates, stable flow velocity was maintained for approximately eight pore volumes, for flushing times of 8 h (1.0 ml/min) and 16 h (0.5 ml/min). Although the flow rate did not influence k, it influenced C max: at 1 ml/min, C max values were higher than at 0.5 ml/min. For Cu and Zn, but not Pb, k was about twofold higher with Na2EDTA than with SS_WAs. Although Na2EDTA gave the highest k Cu, C max,Cu was highest with DOM (Na2EDTA, 66%; DOM 73%). For Pb removal, HLS was the most effective SS_WA (77%; Na2EDTA was 80% effective). k Zn was about twofold higher with Na2EDTA than with SS_WAs. C max,Zn was highest with HLS. The quick mobilization of Cu, Pb and Zn with most of the WAs corresponded to efficient metal removal from the exchangeable (F1) fraction.
format	article
author	Barbara Klik Zygmunt M. Gusiatin Dorota Kulikowska
author_facet	Barbara Klik Zygmunt M. Gusiatin Dorota Kulikowska
author_sort	Barbara Klik
title	Kinetics of Cu, Pb and Zn removal during soil flushing with washing agents derived from sewage sludge
title_short	Kinetics of Cu, Pb and Zn removal during soil flushing with washing agents derived from sewage sludge
title_full	Kinetics of Cu, Pb and Zn removal during soil flushing with washing agents derived from sewage sludge
title_fullStr	Kinetics of Cu, Pb and Zn removal during soil flushing with washing agents derived from sewage sludge
title_full_unstemmed	Kinetics of Cu, Pb and Zn removal during soil flushing with washing agents derived from sewage sludge
title_sort	kinetics of cu, pb and zn removal during soil flushing with washing agents derived from sewage sludge
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/e6f3262b812e4e20b1e22941ef7dd711
work_keys_str_mv	AT barbaraklik kineticsofcupbandznremovalduringsoilflushingwithwashingagentsderivedfromsewagesludge AT zygmuntmgusiatin kineticsofcupbandznremovalduringsoilflushingwithwashingagentsderivedfromsewagesludge AT dorotakulikowska kineticsofcupbandznremovalduringsoilflushingwithwashingagentsderivedfromsewagesludge
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Kinetics of Cu, Pb and Zn removal during soil flushing with washing agents derived from sewage sludge

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