Assessment of zeolite and compost-zeolite mixture as permeable reactive materials for the removal of lead from a model acidic groundwater

Franklin Obiri-Nyarko , Jolanta Kwiatkowska-Malina , Grzegorz Malina , Krzysztof Wołowiec

Abstract

Column experiments were performed to assess the effectiveness of zeolite and compost-zeolite mixture in removing dissolved lead (Pb2+) from acidic water of pH 2.4. The acid neutralizing ability and hydraulic performance of the materials were also studied. Fitting the advection-dispersion equation (ADE) and mathematical models (i.e. the Dose-Response, Adams-Bohart, and Yoon-Nelson models) to the Pb2+ experimental breakthrough curves (BTCs) was also performed. The compost-zeolite mixture proved to be better than zeolite alone both: in removing Pb2+ and in buffering the acidic pH. The maximum adsorption capacity, qo obtained for zeolite was 0.097 mg/g and 0.151 mg/g for the compost-zeolite mixture, respectively. Lead removal was attributed to ion exchange and adsorption. Observed Pb2+ BTCs demonstrated sorption-related nonequilibrium effects in the columns. The hydraulic conductivity of zeolite decreased by 2% and by 28.8% in the case of compost-zeolite mixture at the end of the experiment. The entire experimental BTC of Pb2+ was well described by the Dose-Response model while the Adams-Bohart model was better in describing only the initial part of the lead BTCs.
Author Franklin Obiri-Nyarko
Franklin Obiri-Nyarko ,,
-
, Jolanta Kwiatkowska-Malina (FGC / CSMES)
Jolanta Kwiatkowska-Malina,,
- Chair of Spatial Management and Environmental Science
, Grzegorz Malina
Grzegorz Malina,,
-
, Krzysztof Wołowiec
Krzysztof Wołowiec,,
-
Journal seriesJournal of Contaminant Hydrology, ISSN 0169-7722, e-ISSN 1873-6009
Issue year2020
No229
Pages1-10
Publication size in sheets0.3
Keywords in EnglishPermeable reactive barriersZeoliteCompostLeadModellingAcidic groundwater
ASJC Classification2304 Environmental Chemistry; 2312 Water Science and Technology
DOIDOI:10.1016/j.jconhyd.2019.103597
Internal identifier5/2020
Languageen angielski
Score (nominal)100
Score sourcejournalList
ScoreMinisterial score = 100.0, 16-07-2020, ArticleFromJournal
Publication indicators Scopus Citations = 0; WoS Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2018 = 1.313; WoS Impact Factor: 2018 = 2.65 (2) - 2018=2.68 (5)
Citation count*1 (2020-09-08)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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