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Removal of lead ions from aqueous solution using phosphate‐based geopolymer cement composite

Jacques R Njimou, Martin Pengou, Hervé K Tchakoute, Mary Sieugaing Tamwa, Chedly Tizaoui Orcid Logo, Ulrich Fannang, Patrick N Lemougna, Charles P Nanseu‐Njiki, Emmanuel Ngameni

Journal of Chemical Technology & Biotechnology, Volume: 96, Issue: 5, Pages: 1358 - 1369

Swansea University Author: Chedly Tizaoui Orcid Logo

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DOI (Published version): 10.1002/jctb.6657

Abstract

BACKGROUNDWater contaminated by heavy metals has many negative impacts on human health and the environment. According to the UN's sustainable development goals, preserving natural resources will have positive impacts on living conditions by reducing diseases. In this study, a novel adsorbent sy...

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Published in: Journal of Chemical Technology & Biotechnology
ISSN: 0268-2575 1097-4660
Published: Wiley 2021
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URI: https://cronfa.swan.ac.uk/Record/cronfa56335
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spelling 2022-11-24T15:16:54.5597872 v2 56335 2021-02-26 Removal of lead ions from aqueous solution using phosphate‐based geopolymer cement composite 4b34a0286d3c0b0b081518fa6987031d 0000-0003-2159-7881 Chedly Tizaoui Chedly Tizaoui true false 2021-02-26 CHEG BACKGROUNDWater contaminated by heavy metals has many negative impacts on human health and the environment. According to the UN's sustainable development goals, preserving natural resources will have positive impacts on living conditions by reducing diseases. In this study, a novel adsorbent synthesized from phosphate‐based geopolymer cement composite material was developed and evaluated for lead removal from aqueous solutions. The developed adsorbent is made from natural resources using a facile protocol, and thus it is suitable for both developed and developing countries.RESULTSAnalyses of mineralogical composition, pore‐size distribution and surface of the synthesized phosphate‐based geopolymer cement composite were performed. A microporous structure was observed from the microstructural characterization. Geopolymer cement was immobilized with sodium alginate to fabricate alginate–geopolymer cement beads (Alg/GES). The parameters influencing the adsorption process were investigated in batch mode. The obtained results showed that the adsorption capacity of Pb(II) ions increased with time and equilibrium was reached in 90 min. The optimum adsorption pH was 4.17. The experimental results showed that the adsorption equilibrium of Pb(II) on Alg/GES was well described by the Freundlich and Langmuir models whereas the adsorption rate was well fitted by the pseudo‐second‐order kinetics model. The maximum adsorption capacity obtained from the Langmuir isotherm was qmax = 0.38 mmol g−1. From the Dubinin–Radushkevitch isotherm model, the value of the free adsorption energy was 41 kJ mol−1.CONCLUSIONSCompared with other adsorbents, Alg/GES exhibited a greater adsorption capacity confirming that the phosphate‐based geopolymer cement can be suitable for removal of heavy metals from wastewaters. Journal Article Journal of Chemical Technology & Biotechnology 96 5 1358 1369 Wiley 0268-2575 1097-4660 phosphoric geopolymer cement; acid synthesis; lead ions; alginate–geopolymer spheres; adsorption; modelling 1 5 2021 2021-05-01 10.1002/jctb.6657 http://dx.doi.org/10.1002/jctb.6657 COLLEGE NANME Chemical Engineering COLLEGE CODE CHEG Swansea University 2022-11-24T15:16:54.5597872 2021-02-26T10:51:48.7091138 Faculty of Science and Engineering School of Engineering and Applied Sciences - Chemical Engineering Jacques R Njimou 1 Martin Pengou 2 Hervé K Tchakoute 3 Mary Sieugaing Tamwa 4 Chedly Tizaoui 0000-0003-2159-7881 5 Ulrich Fannang 6 Patrick N Lemougna 7 Charles P Nanseu‐Njiki 8 Emmanuel Ngameni 9
title Removal of lead ions from aqueous solution using phosphate‐based geopolymer cement composite
spellingShingle Removal of lead ions from aqueous solution using phosphate‐based geopolymer cement composite
Chedly Tizaoui
title_short Removal of lead ions from aqueous solution using phosphate‐based geopolymer cement composite
title_full Removal of lead ions from aqueous solution using phosphate‐based geopolymer cement composite
title_fullStr Removal of lead ions from aqueous solution using phosphate‐based geopolymer cement composite
title_full_unstemmed Removal of lead ions from aqueous solution using phosphate‐based geopolymer cement composite
title_sort Removal of lead ions from aqueous solution using phosphate‐based geopolymer cement composite
author_id_str_mv 4b34a0286d3c0b0b081518fa6987031d
author_id_fullname_str_mv 4b34a0286d3c0b0b081518fa6987031d_***_Chedly Tizaoui
author Chedly Tizaoui
author2 Jacques R Njimou
Martin Pengou
Hervé K Tchakoute
Mary Sieugaing Tamwa
Chedly Tizaoui
Ulrich Fannang
Patrick N Lemougna
Charles P Nanseu‐Njiki
Emmanuel Ngameni
format Journal article
container_title Journal of Chemical Technology & Biotechnology
container_volume 96
container_issue 5
container_start_page 1358
publishDate 2021
institution Swansea University
issn 0268-2575
1097-4660
doi_str_mv 10.1002/jctb.6657
publisher Wiley
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Chemical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Chemical Engineering
url http://dx.doi.org/10.1002/jctb.6657
document_store_str 0
active_str 0
description BACKGROUNDWater contaminated by heavy metals has many negative impacts on human health and the environment. According to the UN's sustainable development goals, preserving natural resources will have positive impacts on living conditions by reducing diseases. In this study, a novel adsorbent synthesized from phosphate‐based geopolymer cement composite material was developed and evaluated for lead removal from aqueous solutions. The developed adsorbent is made from natural resources using a facile protocol, and thus it is suitable for both developed and developing countries.RESULTSAnalyses of mineralogical composition, pore‐size distribution and surface of the synthesized phosphate‐based geopolymer cement composite were performed. A microporous structure was observed from the microstructural characterization. Geopolymer cement was immobilized with sodium alginate to fabricate alginate–geopolymer cement beads (Alg/GES). The parameters influencing the adsorption process were investigated in batch mode. The obtained results showed that the adsorption capacity of Pb(II) ions increased with time and equilibrium was reached in 90 min. The optimum adsorption pH was 4.17. The experimental results showed that the adsorption equilibrium of Pb(II) on Alg/GES was well described by the Freundlich and Langmuir models whereas the adsorption rate was well fitted by the pseudo‐second‐order kinetics model. The maximum adsorption capacity obtained from the Langmuir isotherm was qmax = 0.38 mmol g−1. From the Dubinin–Radushkevitch isotherm model, the value of the free adsorption energy was 41 kJ mol−1.CONCLUSIONSCompared with other adsorbents, Alg/GES exhibited a greater adsorption capacity confirming that the phosphate‐based geopolymer cement can be suitable for removal of heavy metals from wastewaters.
published_date 2021-05-01T04:11:13Z
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score 11.013371

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