| Autor: |
Dian Arrisujaya, Niti Sae Utami, Tia Mulyawati, Dea Rahmalisa, Siska Wati, Hidayat Hidayat |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
Water Practice and Technology, Vol 18, Iss 11, Pp 2785-2796 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
1751-231X |
| DOI: |
10.2166/wpt.2023.182 |
| Popis: |
This work reports the use of Mangifera kemanga leaves (MKL) treated with ethanol and nitric acid as an adsorbent to remove Cr(VI) and Pb(II) ions at different pHs, adsorbent dosages, times, initial metal ion concentrations, and temperatures. The MKL's maximum adsorption capacity was 213 mg/g for Cr(VI) at pH 2 and 89 mg/g for Pb(II) at pH 6. Batch experiments showed that MKL follows the Langmuir isotherm model in absorbing Cr(VI) and Pb(II). The Cr(VI) and Pb(II) adsorption kinetics are best suited by the pseudo-second-order kinetics model. Thermodynamic data studies indicated that surface complexation coexisted with ion exchange as the preliminary removal means. The results implied that MKL could potentially remove Cr(VI) and Pb(II). HIGHLIGHTS Kemang leaves were used as biosorbent for Cr(VI) and Pb(II) removal from aqueous solution.; The biosorption capacity of the biosorbent for Cr(VI) was 212.76 mg/g.; The biosorption capacity of the biosorbent for Pb(II) was 89.29 mg/g.; Both Cr(VI) and Pb(II) adsorption were well suited by a pseudo-second-order model.; Biosorbent may be regenerated and reused, indicating materials’ economic benefits.; |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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