REMOVAL OF Pb2+ AND Cr3+ USING RICE HUSK AS BIOSORBENT | ||||
| Zagazig Journal of Agricultural Research | ||||
| Volume 49, Issue 5, September and October 2022, Page 653-666 PDF (655.1 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/zjar.2022.269607 | ||||
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| Authors | ||||
Mahmoud S.M. Abd El-Aziz  1; R.A. Al-Masry2; H.T. Hefnawy2; A.O.M. Khalil2
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| 1Biochem. Dept., Fac. Agric., Zagazig Univ., Egypt Univerisity | ||||
| 2Biochem. Dept., Fac. Agric., Zagazig Univ., Egypt | ||||
| Abstract | ||||
| The biosorption process and agricultural waste to treat heavy metals has drawn much attention. This method seems to be a more economical, envchromiummentallyfriendly, and simple way for removing heavy metals from effluents. The study was conducted to explore the efficiency of the biosorption process utilizing rice husk to remove Pb2+ and Cr3+ from synthetic wastewater. Biosorption studies at different operating parameters, such as biosorbent dosage (0.5-5.0 g), pH (pH2–8), contact time (15-120 minutes), and initial heavy metal concentration (10-100 mg/L), were conducted in batch experiments. The highest performance for Pb2+ and Cr3+ biosorption was found at 5.0g biosorbent dosage of spent mushroom compost, unadjusted pH 6, 10 minutes of contact time, and 10 mg/L of initial concentration. The study was well fitted to the Langmuir isotherm model (R2> 0.90) for Pb2+ and Cr3+ biosorption, which are much greater compared to the Freundlich model.Solvent of 0.1N Sulphuric acid showed higher desorption of Pb2+(89%) and Cr3+(86%) adsorption-desorption process can be continued till seven cycles efficiently.In conclusion, the rice husk has the potential to be an effective biosorbent for removing Pb2+ and Cr3+ from synthetic wastewater. | ||||
| Keywords | ||||
| Biosorption; Pb2+; Cr3+; rice husks; wastewater | ||||
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