Date seed derived biochar for Ni(II) removal from aqueous solutions
The purpose of this study was to investigate the adsorption characteristic of biochars derived from date seed for Ni2+ ions removal from aqueous solutions. Two biochars were prepared by slow pyrolysis of date seed for 3 h at 450 °C (DSB450) and 550 °C (DSB550). The adsorption of Ni2+ was carried out...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2017-01-01
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| Series: | MATEC Web of Conferences |
| Online Access: | https://doi.org/10.1051/matecconf/201712005005 |
| _version_ | 1818657543730233344 |
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| author | Mahdi Zainab El Hanandeh Ali Yu Qiming |
| author_facet | Mahdi Zainab El Hanandeh Ali Yu Qiming |
| author_sort | Mahdi Zainab |
| collection | DOAJ |
| description | The purpose of this study was to investigate the adsorption characteristic of biochars derived from date seed for Ni2+ ions removal from aqueous solutions. Two biochars were prepared by slow pyrolysis of date seed for 3 h at 450 °C (DSB450) and 550 °C (DSB550). The adsorption of Ni2+ was carried out by batch experiments at room temperature. The effects of pyrolysis temperature, contact time, initial metal concentration, and solution pH were investigated. The results showed that biochar prepared at higher temperature (DSB550) had higher adsorption capacity of Ni2+ from aqueous solution than biochar prepared at lower temperature (DBS450). Adsorption efficiency of Ni2+ ions was pH dependent and the maximum adsorption was found to occur at pH around 6.0. To describe the equilibrium isotherms, the experimental results were analyzed by the Langmuir, and Freundlich isotherms. The adsorption isotherm for Ni2+ by DSB550 was best fit to Langmuir isotherm with (R2 = 0.94). The maximum adsorption capacity of Ni2+ of DSB550 biochar was 0.609 mmol g−1. Pseudo-first order, pseudo-second order, and intraparticle diffusion models were used to model the kinetic parameters and mechanism of adsorption process. The results showed that the adsorption kinetics of these biochars are well described by a pseudo-second order kinetic model with correlation coefficient (R2 = 0.99). The results of the study indicated that biochar derived from date seed biomass is a suitable material for adsorption of Ni2+ ion from aqueous solution. |
| first_indexed | 2024-12-17T03:43:09Z |
| format | Article |
| id | doaj.art-5a46507fb586423484234cd563993c23 |
| institution | Directory Open Access Journal |
| issn | 2261-236X |
| language | English |
| last_indexed | 2024-12-17T03:43:09Z |
| publishDate | 2017-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | MATEC Web of Conferences |
| spelling | doaj.art-5a46507fb586423484234cd563993c232022-12-21T22:04:57ZengEDP SciencesMATEC Web of Conferences2261-236X2017-01-011200500510.1051/matecconf/201712005005matecconf_ascm2017_05005Date seed derived biochar for Ni(II) removal from aqueous solutionsMahdi Zainab0El Hanandeh Ali1Yu Qiming2School of Engineering, Griffith UniversitySchool of Engineering, Griffith UniversitySchool of Engineering, Griffith UniversityThe purpose of this study was to investigate the adsorption characteristic of biochars derived from date seed for Ni2+ ions removal from aqueous solutions. Two biochars were prepared by slow pyrolysis of date seed for 3 h at 450 °C (DSB450) and 550 °C (DSB550). The adsorption of Ni2+ was carried out by batch experiments at room temperature. The effects of pyrolysis temperature, contact time, initial metal concentration, and solution pH were investigated. The results showed that biochar prepared at higher temperature (DSB550) had higher adsorption capacity of Ni2+ from aqueous solution than biochar prepared at lower temperature (DBS450). Adsorption efficiency of Ni2+ ions was pH dependent and the maximum adsorption was found to occur at pH around 6.0. To describe the equilibrium isotherms, the experimental results were analyzed by the Langmuir, and Freundlich isotherms. The adsorption isotherm for Ni2+ by DSB550 was best fit to Langmuir isotherm with (R2 = 0.94). The maximum adsorption capacity of Ni2+ of DSB550 biochar was 0.609 mmol g−1. Pseudo-first order, pseudo-second order, and intraparticle diffusion models were used to model the kinetic parameters and mechanism of adsorption process. The results showed that the adsorption kinetics of these biochars are well described by a pseudo-second order kinetic model with correlation coefficient (R2 = 0.99). The results of the study indicated that biochar derived from date seed biomass is a suitable material for adsorption of Ni2+ ion from aqueous solution.https://doi.org/10.1051/matecconf/201712005005 |
| spellingShingle | Mahdi Zainab El Hanandeh Ali Yu Qiming Date seed derived biochar for Ni(II) removal from aqueous solutions MATEC Web of Conferences |
| title | Date seed derived biochar for Ni(II) removal from aqueous solutions |
| title_full | Date seed derived biochar for Ni(II) removal from aqueous solutions |
| title_fullStr | Date seed derived biochar for Ni(II) removal from aqueous solutions |
| title_full_unstemmed | Date seed derived biochar for Ni(II) removal from aqueous solutions |
| title_short | Date seed derived biochar for Ni(II) removal from aqueous solutions |
| title_sort | date seed derived biochar for ni ii removal from aqueous solutions |
| url | https://doi.org/10.1051/matecconf/201712005005 |
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