TY - JOUR ID - 5915 TI - Investigation of Cr(VI) Adsorption by Dried Brown Algae Sargassum sp. and Its Activated Carbon JO - Iranian Journal of Chemistry and Chemical Engineering JA - IJCCE LA - en SN - 1021-9986 AU - Esmaeili,, Akbar AU - Ghasemi, Samira AU - Zamani, Fariba AD - Department of Chemical Engineering, North Tehran Branch, Islamic Azad University, P.O. Box 1969633651 Tehran,, I.R. IRAN AD - Department of Chemistry, Science & Research Campus, Islamic Azad University, P.O. Box 14515-775 Tehran, I.R. IRAN Y1 - 2012 PY - 2012 VL - 31 IS - 4 SP - 11 EP - 19 KW - Sargassum sp KW - Activated Carbon KW - Adsorption KW - Algae KW - Biosorbent DO - 10.30492/ijcce.2012.5915 N2 - In this research, the batch removal of toxic hexavalent chromium ions from wastewater and aqueous solution using dried (BD) Sargassum sp. (brown marine algae) and Activated Carbon (AC) prepared from it was examined. Biomass, pH and the initial concentration of Cr(VI), adsorption models and kinetic studies were investigated. The experiment was performed in a batch system and theeffect of solution pH, initial concentration and contact time on biosorption by both biomasses were investigated and compared. When we used AC and BD as biosorbents, optima conditionswere established at pH=2.0, Cr6+ concentration at 3.69 mg/g BD and 6.877 mg/g ACand equilibrium time of 120 min. The adsorption was in therange of 83.55% and 91.98%, respectively. The experimental adsorption data were fitted to the Langmuir adsorption model.The chromium (VI) uptake by the biosorbents was best described by a pseudo second-order rate model.   UR - https://ijcce.ac.ir/article_5915.html L1 - https://ijcce.ac.ir/article_5915_f68d39256809ba632173faef4925c884.pdf ER -