Sequestration of Pb2+ from aqueous solution using bio-based-alkaline modified sorbent from waste Irvingia gabonensis seed husk
The unmodified and modified Irvingia gabonensis (IG) were characterized with Fourier transform infrared (FTIR), X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET), thermogravimetric analyzer (TGA), and scanning electron microscope (SEM). The experimental conditions revealed the optimum adsorption...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IWA Publishing
2023-11-01
|
| Series: | Water Practice and Technology |
| Subjects: | |
| Online Access: | http://wpt.iwaponline.com/content/18/11/2495 |
| _version_ | 1797428439085481984 |
|---|---|
| author | Hillary Onyeka Abugu Ogechi L. Alum Janefrances N. Ihedioha Arinze L. Ezugwu Ifeanyi A. Ucheana Ibeabuchi J. Ali Samson I. Eze |
| author_facet | Hillary Onyeka Abugu Ogechi L. Alum Janefrances N. Ihedioha Arinze L. Ezugwu Ifeanyi A. Ucheana Ibeabuchi J. Ali Samson I. Eze |
| author_sort | Hillary Onyeka Abugu |
| collection | DOAJ |
| description | The unmodified and modified Irvingia gabonensis (IG) were characterized with Fourier transform infrared (FTIR), X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET), thermogravimetric analyzer (TGA), and scanning electron microscope (SEM). The experimental conditions revealed the optimum adsorption efficiency was achieved at pH 6 within 30 min. FTIR spectra showed an observable shift in peaks attributed to the pretreatment with NaOH that necessitated the breakdown of the organic compounds. It was established from the SEM image under different magnifications that the surface morphology of the biosorbent consists of heterogeneous layers and pore cavities which acted as potential sites for Pb2+ adsorption. However, there was a considerable increase in the BET surface area, pore size, and pore width on the modified biosorbent compared to the unmodified biosorbent though this did not translate into higher adsorption capacity. The experimental data were best fitted with the Temkim isotherm model suggesting heterogeneous uptake of Pb2+ onto the base-modified Irvingia gabonensis seed husk. The maximum adsorption capacity was 2.58 mg/g and the kinetic model is best described with the pseudo-second-order reaction suggesting a chemical adsorption mechanism. The two error functions (HYBRID and MPSD) suggested the pseudo-second-order reaction mechanism in the adsorption of Pb2+ onto the base-modified Irvingia gabonensis.
HIGHLIGHTS
Irvingia gabonensis seed husk was investigated for Pb2+ removal from aqueous solution.;
Irvingia gabonensis was functionalized with base (NaOH).;
A large surface area was observed on the functionalized Irvingia gabonensis.;
Several functional groups that enhanced the adsorption of Pb2+ were observed.;
HYBRID and MPSD error functions indicated the chemisorption reaction mechanism on Pb2+ adsorption.; |
| first_indexed | 2024-03-09T08:58:54Z |
| format | Article |
| id | doaj.art-172f850d7e5c4f44b2ca0f52dcc5ce4c |
| institution | Directory Open Access Journal |
| issn | 1751-231X |
| language | English |
| last_indexed | 2024-03-09T08:58:54Z |
| publishDate | 2023-11-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Water Practice and Technology |
| spelling | doaj.art-172f850d7e5c4f44b2ca0f52dcc5ce4c2023-12-02T12:10:43ZengIWA PublishingWater Practice and Technology1751-231X2023-11-0118112495251310.2166/wpt.2023.170170Sequestration of Pb2+ from aqueous solution using bio-based-alkaline modified sorbent from waste Irvingia gabonensis seed huskHillary Onyeka Abugu0Ogechi L. Alum1Janefrances N. Ihedioha2Arinze L. Ezugwu3Ifeanyi A. Ucheana4Ibeabuchi J. Ali5Samson I. Eze6 Department of Pure and Industrial Chemistry, University of Nigeria, Nsukka, Enugu State, Nigeria Department of Pure and Industrial Chemistry, University of Nigeria, Nsukka, Enugu State, Nigeria Department of Pure and Industrial Chemistry, University of Nigeria, Nsukka, Enugu State, Nigeria Department of Pure and Industrial Chemistry, University of Nigeria, Nsukka, Enugu State, Nigeria Department of Pure and Industrial Chemistry, University of Nigeria, Nsukka, Enugu State, Nigeria Department of Pharmaceutical Chemistry, Enugu State University of Science and Technology, Enugu, Enugu State, Nigeria Department of Pure and Industrial Chemistry, University of Nigeria, Nsukka, Enugu State, Nigeria The unmodified and modified Irvingia gabonensis (IG) were characterized with Fourier transform infrared (FTIR), X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET), thermogravimetric analyzer (TGA), and scanning electron microscope (SEM). The experimental conditions revealed the optimum adsorption efficiency was achieved at pH 6 within 30 min. FTIR spectra showed an observable shift in peaks attributed to the pretreatment with NaOH that necessitated the breakdown of the organic compounds. It was established from the SEM image under different magnifications that the surface morphology of the biosorbent consists of heterogeneous layers and pore cavities which acted as potential sites for Pb2+ adsorption. However, there was a considerable increase in the BET surface area, pore size, and pore width on the modified biosorbent compared to the unmodified biosorbent though this did not translate into higher adsorption capacity. The experimental data were best fitted with the Temkim isotherm model suggesting heterogeneous uptake of Pb2+ onto the base-modified Irvingia gabonensis seed husk. The maximum adsorption capacity was 2.58 mg/g and the kinetic model is best described with the pseudo-second-order reaction suggesting a chemical adsorption mechanism. The two error functions (HYBRID and MPSD) suggested the pseudo-second-order reaction mechanism in the adsorption of Pb2+ onto the base-modified Irvingia gabonensis. HIGHLIGHTS Irvingia gabonensis seed husk was investigated for Pb2+ removal from aqueous solution.; Irvingia gabonensis was functionalized with base (NaOH).; A large surface area was observed on the functionalized Irvingia gabonensis.; Several functional groups that enhanced the adsorption of Pb2+ were observed.; HYBRID and MPSD error functions indicated the chemisorption reaction mechanism on Pb2+ adsorption.;http://wpt.iwaponline.com/content/18/11/2495adsorptionftirkineticsmorphologypseudo-first-order reactionwaste |
| spellingShingle | Hillary Onyeka Abugu Ogechi L. Alum Janefrances N. Ihedioha Arinze L. Ezugwu Ifeanyi A. Ucheana Ibeabuchi J. Ali Samson I. Eze Sequestration of Pb2+ from aqueous solution using bio-based-alkaline modified sorbent from waste Irvingia gabonensis seed husk Water Practice and Technology adsorption ftir kinetics morphology pseudo-first-order reaction waste |
| title | Sequestration of Pb2+ from aqueous solution using bio-based-alkaline modified sorbent from waste Irvingia gabonensis seed husk |
| title_full | Sequestration of Pb2+ from aqueous solution using bio-based-alkaline modified sorbent from waste Irvingia gabonensis seed husk |
| title_fullStr | Sequestration of Pb2+ from aqueous solution using bio-based-alkaline modified sorbent from waste Irvingia gabonensis seed husk |
| title_full_unstemmed | Sequestration of Pb2+ from aqueous solution using bio-based-alkaline modified sorbent from waste Irvingia gabonensis seed husk |
| title_short | Sequestration of Pb2+ from aqueous solution using bio-based-alkaline modified sorbent from waste Irvingia gabonensis seed husk |
| title_sort | sequestration of pb2 from aqueous solution using bio based alkaline modified sorbent from waste irvingia gabonensis seed husk |
| topic | adsorption ftir kinetics morphology pseudo-first-order reaction waste |
| url | http://wpt.iwaponline.com/content/18/11/2495 |
| work_keys_str_mv | AT hillaryonyekaabugu sequestrationofpb2fromaqueoussolutionusingbiobasedalkalinemodifiedsorbentfromwasteirvingiagabonensisseedhusk AT ogechilalum sequestrationofpb2fromaqueoussolutionusingbiobasedalkalinemodifiedsorbentfromwasteirvingiagabonensisseedhusk AT janefrancesnihedioha sequestrationofpb2fromaqueoussolutionusingbiobasedalkalinemodifiedsorbentfromwasteirvingiagabonensisseedhusk AT arinzelezugwu sequestrationofpb2fromaqueoussolutionusingbiobasedalkalinemodifiedsorbentfromwasteirvingiagabonensisseedhusk AT ifeanyiaucheana sequestrationofpb2fromaqueoussolutionusingbiobasedalkalinemodifiedsorbentfromwasteirvingiagabonensisseedhusk AT ibeabuchijali sequestrationofpb2fromaqueoussolutionusingbiobasedalkalinemodifiedsorbentfromwasteirvingiagabonensisseedhusk AT samsonieze sequestrationofpb2fromaqueoussolutionusingbiobasedalkalinemodifiedsorbentfromwasteirvingiagabonensisseedhusk |