![]() ![]() Removal of Cr (VI) from aqueous solutions using pre-consumer processing agricultural waste: a case study of rice husk. Journal of Mazandaran University of Medical Sciences 24: 172–187.īansal, M., Garg, U., Diwan, S. Equilibrium and synthetic equations for index removal of methylene blue using activated carbon from oak fruit bark. Journal of chemical and pharmaceutical sciences 9: 2924–2928.Īsgari, G., Dargahi, A. Efficiency of a constructed wetland in controlling organic pollutants, nitrogen, and heavy metals from sewage. International Journal of Pharmacy and Technology 8: 13919–13929. Evaluating the palm leaves efficiency as a natural adsorbent for removing cadmium from aqueous solutions: isotherm adsorption study. International Journal of Current Engineering and Technology 8(3): 526–530. Removal of heavy metal ions from wastewater by chemically modified agricultural waste material as potential adsorbent-a review. The findings implied that the acid and biochar rice bran performed remarkably in the remediation of the wastewater compared with alkali rice bran for reuse for industrial, agricultural, and environmental purposes.Īcharya, J., Kumar, U. ![]() The adsorption kinetics was agreeably suited to pseudo-second-order, whereas the Freundlich isotherm equation was also suitably expounded the study’s findings. Furthermore, the highest removal efficiency was obtained (94%) at the pH of 2.0, the contact duration of 100 min, Cr (VI) concentration of 50 mg/L, and dosage of 2 g/L, which was statistically the optimal condition for the modified rice bran. The increase of adsorbent dosage up to 2 g/L led to a rise in removal effectiveness (82.06%). The findings indicated that the optimized acid, biochar, alkali, and unmodified rice bran removal efficiency for Cr (VI) were 94.50%, 94.27%, 88.60%, and 90.18%, respectively. The scanning electron microscope and Fourier transform infrared spectroscopy were used to analyze the characteristics of the modified adsorbents. The colorimetric method was used for Cr determination by employing an ultraviolet/visible spectrophotometer. This study investigated the possibility and efficiency of absorbing chromium (VI) (Cr ) ions from the polluted solutions by employing the chemically modified adsorbents (alkali, biochar, and acid rice bran), focusing on the possible impacts of the solution’s pH values, adsorbent’s dosages, concentrations, and contact times. ![]()
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