TY - JOUR ID - 73976 TI - The Study of Phosphorous Adsorption from Aqueous Solution by Date Wood and Sugarcane Bagasse Biochars Produced at Different Pyrolysis Temperature JO - Iranian Journal of Soil and Water Research JA - IJSWR LA - en SN - 2008-479X AU - Koraei, Ali AU - Moezzi, Abdolamir AU - Khodadoust, Saeid AD - Ph.D. Student, Department of Soil Science, Faculty of Agriculture, Shahid Chamran University of Ahvaz, Ahvaz, Iran AD - Associate Professor, Department of Soil Sciences, Faculty of Agriculture, Shahid Chamran University of Ahvaz AD - Assistant Professor, Department of Chemistry, Faculty of Science, Behbahan Khatam Alanbia University of Technology, Behbahan, Iran Y1 - 2020 PY - 2020 VL - 51 IS - 3 SP - 617 EP - 628 KW - Pyrolysis temperature KW - Organic adsorbent KW - Kinetic adsorption KW - Isotherm DO - 10.22059/ijswr.2019.291920.668380 N2 - The potential of biochar for pollutant removal from aqueous solution greatly depends on biochar characteristics and its production conditions. The objective of this research was to investigate the efficiency of phosphorous adsorption from aqueous solution by date wood and sugarcane bagasse biochars produced at different pyrolysis temperature. For this purpose, biochars were produced at different temperatures (250, 400, 550 ˚C) and their physio-chemical characteristics were measured. Batch experiments performed to evaluate equilibrium and kinetics phosphate adsorption on biochars surface. Then, experimental data of phosphate adsorption were analyzed using the kinetic (Pseudo First-order, Pseudo second-order, and intra-particle diffusion) and the adsorption isotherm (Langmuir, Freundlich) models. In addition, the effect of various initial phosphate concentrations (25–500 mg L-1) and solution pH was investigated. The results indicated that the removal efficiency of sugarcane bagasse biochars was more than the date wood and increased with increasing of pyrolysis temperature. The sugarcane bagasse biochar produced at 550 ˚C, had maximum phosphorus adsorption from aqueous solution (46.94 mg g-1). Freundlich model showed the best fit for experimental data of phosphate adsorption onto biochar with R2=0.96 and RMSE=0.004. The results also revealed that Pseudo second-order kinetic model (R2 = 0.99) had the best fit for phosphate adsorption data. According to the results of this study, it can be concluded that the sugarcane bagasse biochar produced at 550 ˚C has high efficiency for removal phosphate from aqueous solution. UR - https://ijswr.ut.ac.ir/article_73976.html L1 - https://ijswr.ut.ac.ir/article_73976_c9c9ff772e76f4b3aad81b8ff105d3f3.pdf ER -