Lead (Pb2+) adsorption by means of pristine and prewashed residual Moringa oleifera Lam. seed husk biomass for water treatment applications
Moringa oleifera Lam. (MO) seed husk waste was used to remove Pb during batch and filtration processes, from lead-containing water. MO husk biomass was used in its pristine (i.e. unwashed) and prewashed forms. Adsorption was described by the Dubinin-Radushkevich model (qm 3.719 [mg Pb/g MO husk], K...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2021-09-01
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| Series: | International Journal of Sustainable Engineering |
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| Online Access: | http://dx.doi.org/10.1080/19397038.2020.1862350 |
| _version_ | 1797678280343552000 |
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| author | Juan S. Villarreal Javier R. Gándara Danny Navarrete M. Lorena Bejarano Andrea C. Landázuri |
| author_facet | Juan S. Villarreal Javier R. Gándara Danny Navarrete M. Lorena Bejarano Andrea C. Landázuri |
| author_sort | Juan S. Villarreal |
| collection | DOAJ |
| description | Moringa oleifera Lam. (MO) seed husk waste was used to remove Pb during batch and filtration processes, from lead-containing water. MO husk biomass was used in its pristine (i.e. unwashed) and prewashed forms. Adsorption was described by the Dubinin-Radushkevich model (qm 3.719 [mg Pb/g MO husk], K = 1.116×10−7 [mol2/J2]). A new developed model (Bulk Balance Filtration Model-BBFM) correlated better to 15-cm bed height continuous experiments (qF = 730.9 [mg/L] and kB = 0.00189 [L·mg−1·min−1] – pristine husk, and qF = 528.7 [mg/L] and kB = 0.001921 [L·mg−1·min−1] – prewashed husk). BBFM and classic models adjusted well to the 30-cm bed data, while the classic models correlated better to the 45-cm bed filter. In general, prewashing was inefficient to improve metal removal and prewashed husk revealed an unfavourable change in its morphology. The adsorption process resembles to be purely physical in accordance to the isotherm parameters and FTIR spectra. SEM-EDS results corroborate the presence of adsorbed lead in MO husks. Pristine MO husk waste exceeded 91% Pb removals, water usage was minimum and no chemicals were added. Pristine MO husk without a prewashing step provides a green, practical and cheap solution to rural communities’ households and may serve as a business opportunity for families dedicated to growing and harvesting MO. |
| first_indexed | 2024-03-11T22:57:25Z |
| format | Article |
| id | doaj.art-429cc94f48754486874c32f9fc81d380 |
| institution | Directory Open Access Journal |
| issn | 1939-7038 1939-7046 |
| language | English |
| last_indexed | 2024-03-11T22:57:25Z |
| publishDate | 2021-09-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | International Journal of Sustainable Engineering |
| spelling | doaj.art-429cc94f48754486874c32f9fc81d3802023-09-21T15:17:04ZengTaylor & Francis GroupInternational Journal of Sustainable Engineering1939-70381939-70462021-09-0114597098210.1080/19397038.2020.18623501862350Lead (Pb2+) adsorption by means of pristine and prewashed residual Moringa oleifera Lam. seed husk biomass for water treatment applicationsJuan S. Villarreal0Javier R. Gándara1Danny Navarrete2M. Lorena Bejarano3Andrea C. Landázuri4Universidad San Francisco de Quito USFQUniversidad San Francisco de Quito USFQUniversidad San Francisco de Quito USFQUniversidad San Francisco de Quito USFQ, Institute of Materials ResearchUniversidad San Francisco de Quito USFQMoringa oleifera Lam. (MO) seed husk waste was used to remove Pb during batch and filtration processes, from lead-containing water. MO husk biomass was used in its pristine (i.e. unwashed) and prewashed forms. Adsorption was described by the Dubinin-Radushkevich model (qm 3.719 [mg Pb/g MO husk], K = 1.116×10−7 [mol2/J2]). A new developed model (Bulk Balance Filtration Model-BBFM) correlated better to 15-cm bed height continuous experiments (qF = 730.9 [mg/L] and kB = 0.00189 [L·mg−1·min−1] – pristine husk, and qF = 528.7 [mg/L] and kB = 0.001921 [L·mg−1·min−1] – prewashed husk). BBFM and classic models adjusted well to the 30-cm bed data, while the classic models correlated better to the 45-cm bed filter. In general, prewashing was inefficient to improve metal removal and prewashed husk revealed an unfavourable change in its morphology. The adsorption process resembles to be purely physical in accordance to the isotherm parameters and FTIR spectra. SEM-EDS results corroborate the presence of adsorbed lead in MO husks. Pristine MO husk waste exceeded 91% Pb removals, water usage was minimum and no chemicals were added. Pristine MO husk without a prewashing step provides a green, practical and cheap solution to rural communities’ households and may serve as a business opportunity for families dedicated to growing and harvesting MO.http://dx.doi.org/10.1080/19397038.2020.1862350water qualitymoringa oleifera lam.leadbiosorptionfiltrationcharacterisation |
| spellingShingle | Juan S. Villarreal Javier R. Gándara Danny Navarrete M. Lorena Bejarano Andrea C. Landázuri Lead (Pb2+) adsorption by means of pristine and prewashed residual Moringa oleifera Lam. seed husk biomass for water treatment applications International Journal of Sustainable Engineering water quality moringa oleifera lam. lead biosorption filtration characterisation |
| title | Lead (Pb2+) adsorption by means of pristine and prewashed residual Moringa oleifera Lam. seed husk biomass for water treatment applications |
| title_full | Lead (Pb2+) adsorption by means of pristine and prewashed residual Moringa oleifera Lam. seed husk biomass for water treatment applications |
| title_fullStr | Lead (Pb2+) adsorption by means of pristine and prewashed residual Moringa oleifera Lam. seed husk biomass for water treatment applications |
| title_full_unstemmed | Lead (Pb2+) adsorption by means of pristine and prewashed residual Moringa oleifera Lam. seed husk biomass for water treatment applications |
| title_short | Lead (Pb2+) adsorption by means of pristine and prewashed residual Moringa oleifera Lam. seed husk biomass for water treatment applications |
| title_sort | lead pb2 adsorption by means of pristine and prewashed residual moringa oleifera lam seed husk biomass for water treatment applications |
| topic | water quality moringa oleifera lam. lead biosorption filtration characterisation |
| url | http://dx.doi.org/10.1080/19397038.2020.1862350 |
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