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Copper doped zeolite composite for antimicrobial activity and heavy metal removal from waste water

BACKGROUND: The existence of heavy metals and coliform bacteria contaminants in aquatic system of Akaki river basin, a sub city of Addis Ababa, Ethiopia has become a public concern as human population increases and land development continues. Hence, it is the right time to design treatment technolog...

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Autores principales: Fanta, Feleke Terefe, Dubale, Amare Aregahegn, Bebizuh, Dawit Firemichael, Atlabachew, Minaleshewa
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer International Publishing 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6661767/
https://www.ncbi.nlm.nih.gov/pubmed/31384792
http://dx.doi.org/10.1186/s13065-019-0563-1
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author Fanta, Feleke Terefe
Dubale, Amare Aregahegn
Bebizuh, Dawit Firemichael
Atlabachew, Minaleshewa
author_facet Fanta, Feleke Terefe
Dubale, Amare Aregahegn
Bebizuh, Dawit Firemichael
Atlabachew, Minaleshewa
author_sort Fanta, Feleke Terefe
collection PubMed
description BACKGROUND: The existence of heavy metals and coliform bacteria contaminants in aquatic system of Akaki river basin, a sub city of Addis Ababa, Ethiopia has become a public concern as human population increases and land development continues. Hence, it is the right time to design treatment technologies that can handle multiple pollutants. RESULTS: In this study, we prepared a synthetic zeolites and copper doped zeolite composite adsorbents as cost effective and simple approach to simultaneously remove heavy metals and total coliforms from wastewater of Akaki river. The synthesized copper–zeolite X composite was obtained by ion exchange method of copper ions into zeolites frameworks. Iodine test, XRD, FTIR and autosorb IQ automated gas sorption analyzer were used to characterize the adsorbents. The mean concentrations of Cd, Cr, and Pb in untreated sample were 0.795, 0.654 and 0.7025 mg/L respectively. These concentrations decreased to Cd (0.005 mg/L), Cr (0.052 mg/L) and Pb (bellow detection limit, BDL) for sample treated with bare zeolite X while a further decrease in concentration of Cd (0.005 mg/L), Cr (BDL) and Pb (BDL) was observed for the sample treated with copper–zeolite composite. Zeolite X and copper-modified zeolite X showed complete elimination of total coliforms after 90 and 50 min contact time respectively. CONCLUSION: The results obtained in this study showed high antimicrobial disinfection and heavy metal removal efficiencies of the synthesized adsorbents. Furthermore, these sorbents are efficient in significantly reducing physical parameters such as electrical conductivity, turbidity, BOD and COD.
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spelling pubmed-66617672019-08-05 Copper doped zeolite composite for antimicrobial activity and heavy metal removal from waste water Fanta, Feleke Terefe Dubale, Amare Aregahegn Bebizuh, Dawit Firemichael Atlabachew, Minaleshewa BMC Chem Research Article BACKGROUND: The existence of heavy metals and coliform bacteria contaminants in aquatic system of Akaki river basin, a sub city of Addis Ababa, Ethiopia has become a public concern as human population increases and land development continues. Hence, it is the right time to design treatment technologies that can handle multiple pollutants. RESULTS: In this study, we prepared a synthetic zeolites and copper doped zeolite composite adsorbents as cost effective and simple approach to simultaneously remove heavy metals and total coliforms from wastewater of Akaki river. The synthesized copper–zeolite X composite was obtained by ion exchange method of copper ions into zeolites frameworks. Iodine test, XRD, FTIR and autosorb IQ automated gas sorption analyzer were used to characterize the adsorbents. The mean concentrations of Cd, Cr, and Pb in untreated sample were 0.795, 0.654 and 0.7025 mg/L respectively. These concentrations decreased to Cd (0.005 mg/L), Cr (0.052 mg/L) and Pb (bellow detection limit, BDL) for sample treated with bare zeolite X while a further decrease in concentration of Cd (0.005 mg/L), Cr (BDL) and Pb (BDL) was observed for the sample treated with copper–zeolite composite. Zeolite X and copper-modified zeolite X showed complete elimination of total coliforms after 90 and 50 min contact time respectively. CONCLUSION: The results obtained in this study showed high antimicrobial disinfection and heavy metal removal efficiencies of the synthesized adsorbents. Furthermore, these sorbents are efficient in significantly reducing physical parameters such as electrical conductivity, turbidity, BOD and COD. Springer International Publishing 2019-04-01 /pmc/articles/PMC6661767/ /pubmed/31384792 http://dx.doi.org/10.1186/s13065-019-0563-1 Text en © The Author(s) 2019 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
spellingShingle Research Article
Fanta, Feleke Terefe
Dubale, Amare Aregahegn
Bebizuh, Dawit Firemichael
Atlabachew, Minaleshewa
Copper doped zeolite composite for antimicrobial activity and heavy metal removal from waste water
title Copper doped zeolite composite for antimicrobial activity and heavy metal removal from waste water
title_full Copper doped zeolite composite for antimicrobial activity and heavy metal removal from waste water
title_fullStr Copper doped zeolite composite for antimicrobial activity and heavy metal removal from waste water
title_full_unstemmed Copper doped zeolite composite for antimicrobial activity and heavy metal removal from waste water
title_short Copper doped zeolite composite for antimicrobial activity and heavy metal removal from waste water
title_sort copper doped zeolite composite for antimicrobial activity and heavy metal removal from waste water
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6661767/
https://www.ncbi.nlm.nih.gov/pubmed/31384792
http://dx.doi.org/10.1186/s13065-019-0563-1
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