Effective biosorption of As(V) from polluted water using Fe(III)-modified Pomelo (Citrus maxima) peel: A batch, column, and thermodynamic study
Pomelo, Citrus maxima, peel was chemically modified with lime water and then loaded with Fe(III) to develop anion exchange sites for effective sequestration of As(V) from water. Biosorbent characterizations were done by using FTIR, SEM, XRD, EDX, and Boehm's titration. The batch biosorption stu...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-02-01
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| Series: | Heliyon |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844023006722 |
| _version_ | 1811161759196643328 |
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| author | Deepak Gyawali Sangita Rijal Prabin Basnet Kedar Nath Ghimire Megh Raj Pokhrel Hari Paudyal |
| author_facet | Deepak Gyawali Sangita Rijal Prabin Basnet Kedar Nath Ghimire Megh Raj Pokhrel Hari Paudyal |
| author_sort | Deepak Gyawali |
| collection | DOAJ |
| description | Pomelo, Citrus maxima, peel was chemically modified with lime water and then loaded with Fe(III) to develop anion exchange sites for effective sequestration of As(V) from water. Biosorbent characterizations were done by using FTIR, SEM, XRD, EDX, and Boehm's titration. The batch biosorption studies were carried out at various pHs using modified and non-modified biosorbents and optimum biosorption of As(V) occurred at acidic pH (3.0–5.0) for both the biosorbents. A kinetic study showed a fast biosorption rate and obtained results fitted well with the pseudo-second-order (PSO) model. When isotherm data were modeled using the Langmuir and Freundlich isotherm models, the Langmuir isotherm model fit the data better and produced maximal As(V) biosorption capacities of 0.72 ± 03, 0.86 ± 06, and 0.95 ± 05 mmol/g at temperatures 293± 1K, 298± 1K and 303± 1K, respectively. Desorptionof As(V) was effective using 0.1 M NaOH in batch mode. Negative values of ΔG° for all temperatures with positive ΔH° confirmed the spontaneous and endothermic nature of As(V) biosorption. The existence of co-existing chloride (Cl−), nitrate (NO3−), sodium (Na+), and calcium (Ca2+) showed insignificant interference whereas a high concentration of sulphate (SO42−) and phosphate (PO43−) significantly lowered As(V) biosorption percentage. Arsenic concentrations in actual arsenic polluted groundwater could be reduced to the WHO drinking water standard (10 μg/L) by using only 1 g/L of investigated Fe(III)-SPP. The dynamic biosorption of As(V) in a fixed bed system showed that Fe(III)-SPP was effective also in continuous mode and different design parameters for fixed bed system were determined using Thomas, Adams-Bohart, BDST, and Yoon-Nelson models. Therefore, from all of these results it is suggested that Fe(III)-SPP investigated in this study can be a potential, low cost and environmentally benign biosorbent material for an effective removal of trace amounts of arsenic from polluted water. |
| first_indexed | 2024-04-10T06:19:16Z |
| format | Article |
| id | doaj.art-329cfe5c731d4c748c8eff5499e575ad |
| institution | Directory Open Access Journal |
| issn | 2405-8440 |
| language | English |
| last_indexed | 2024-04-10T06:19:16Z |
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| spelling | doaj.art-329cfe5c731d4c748c8eff5499e575ad2023-03-02T05:01:41ZengElsevierHeliyon2405-84402023-02-0192e13465Effective biosorption of As(V) from polluted water using Fe(III)-modified Pomelo (Citrus maxima) peel: A batch, column, and thermodynamic studyDeepak Gyawali0Sangita Rijal1Prabin Basnet2Kedar Nath Ghimire3Megh Raj Pokhrel4Hari Paudyal5Central Department of Chemistry, Tribhuvan University, Kirtipur, Kathmandu, Nepal; Ministry of Forests and Environment, Department of Environment, Government of Nepal, NepalCentral Department of Chemistry, Tribhuvan University, Kirtipur, Kathmandu, NepalCentral Department of Chemistry, Tribhuvan University, Kirtipur, Kathmandu, Nepal; Nepal Engineering College, Affiliated to Pokhara University, Changunarayan, Bhaktapur, NepalCentral Department of Chemistry, Tribhuvan University, Kirtipur, Kathmandu, NepalCentral Department of Chemistry, Tribhuvan University, Kirtipur, Kathmandu, NepalCentral Department of Chemistry, Tribhuvan University, Kirtipur, Kathmandu, Nepal; Corresponding author.Pomelo, Citrus maxima, peel was chemically modified with lime water and then loaded with Fe(III) to develop anion exchange sites for effective sequestration of As(V) from water. Biosorbent characterizations were done by using FTIR, SEM, XRD, EDX, and Boehm's titration. The batch biosorption studies were carried out at various pHs using modified and non-modified biosorbents and optimum biosorption of As(V) occurred at acidic pH (3.0–5.0) for both the biosorbents. A kinetic study showed a fast biosorption rate and obtained results fitted well with the pseudo-second-order (PSO) model. When isotherm data were modeled using the Langmuir and Freundlich isotherm models, the Langmuir isotherm model fit the data better and produced maximal As(V) biosorption capacities of 0.72 ± 03, 0.86 ± 06, and 0.95 ± 05 mmol/g at temperatures 293± 1K, 298± 1K and 303± 1K, respectively. Desorptionof As(V) was effective using 0.1 M NaOH in batch mode. Negative values of ΔG° for all temperatures with positive ΔH° confirmed the spontaneous and endothermic nature of As(V) biosorption. The existence of co-existing chloride (Cl−), nitrate (NO3−), sodium (Na+), and calcium (Ca2+) showed insignificant interference whereas a high concentration of sulphate (SO42−) and phosphate (PO43−) significantly lowered As(V) biosorption percentage. Arsenic concentrations in actual arsenic polluted groundwater could be reduced to the WHO drinking water standard (10 μg/L) by using only 1 g/L of investigated Fe(III)-SPP. The dynamic biosorption of As(V) in a fixed bed system showed that Fe(III)-SPP was effective also in continuous mode and different design parameters for fixed bed system were determined using Thomas, Adams-Bohart, BDST, and Yoon-Nelson models. Therefore, from all of these results it is suggested that Fe(III)-SPP investigated in this study can be a potential, low cost and environmentally benign biosorbent material for an effective removal of trace amounts of arsenic from polluted water.http://www.sciencedirect.com/science/article/pii/S2405844023006722Pomelo peel (PP)Saponification, Fe(III) loadingAs(V) biosorptionInterfering ionsBiosorption thermodynamicsFixed bed column |
| spellingShingle | Deepak Gyawali Sangita Rijal Prabin Basnet Kedar Nath Ghimire Megh Raj Pokhrel Hari Paudyal Effective biosorption of As(V) from polluted water using Fe(III)-modified Pomelo (Citrus maxima) peel: A batch, column, and thermodynamic study Heliyon Pomelo peel (PP) Saponification, Fe(III) loading As(V) biosorption Interfering ions Biosorption thermodynamics Fixed bed column |
| title | Effective biosorption of As(V) from polluted water using Fe(III)-modified Pomelo (Citrus maxima) peel: A batch, column, and thermodynamic study |
| title_full | Effective biosorption of As(V) from polluted water using Fe(III)-modified Pomelo (Citrus maxima) peel: A batch, column, and thermodynamic study |
| title_fullStr | Effective biosorption of As(V) from polluted water using Fe(III)-modified Pomelo (Citrus maxima) peel: A batch, column, and thermodynamic study |
| title_full_unstemmed | Effective biosorption of As(V) from polluted water using Fe(III)-modified Pomelo (Citrus maxima) peel: A batch, column, and thermodynamic study |
| title_short | Effective biosorption of As(V) from polluted water using Fe(III)-modified Pomelo (Citrus maxima) peel: A batch, column, and thermodynamic study |
| title_sort | effective biosorption of as v from polluted water using fe iii modified pomelo citrus maxima peel a batch column and thermodynamic study |
| topic | Pomelo peel (PP) Saponification, Fe(III) loading As(V) biosorption Interfering ions Biosorption thermodynamics Fixed bed column |
| url | http://www.sciencedirect.com/science/article/pii/S2405844023006722 |
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