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- Title
REMOVAL OF Pb<sup>2+</sup> AND Cr<sup>3+</sup> USING RICE HUSK AS BIOSORBENT.
- Authors
Abd El-Aziz, Mahmoud S. M.; Al-Masry, R. A.; Hefnawy, H. T.; Khalil, A. O. M.
- Abstract
The biosorption process and agricultural waste to treat heavy metals has drawn much attention. This method seems to be a more economical, envchromiummentally friendly, 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.
- Subjects
RICE hulls; AGRICULTURAL wastes; DRAWING (Metalwork); LEAD removal (Sewage purification); WATER purification; AGRICULTURAL processing; HEAVY metals; SORPTION
- Publication
Zagazig Journal of Agricultural Research, 2022, Vol 49, Issue 5, p653
- ISSN
1110-0338
- Publication type
Article
- DOI
10.21608/zjar.2022.269607