Effect of Phosphoric Acid Concentration on the Characteristics of Sugarcane Bagasse Activated Carbon

Soft Soil Engineering International Conference 2015

Adib, M.R.M.^1 ; Suraya, W.M.S.W.^1 ; Rafidah, H.^2 ; Amirza, A.R.M.^1 ; Attahirah, M.H.M.N.^1 ; Hani, M.S.N.Q.^1 ; Adnan, M.S.^1

Faculty of Civil and Environmental Engineering, Universiti Tun Hussein Onn Malaysia (UTHM), Johor, Batu Pahat

86400, Malaysia^1

Faculty of Engineering Technology, Universiti Tun Hussein Onn Malaysia (UTHM), Johor, Batu Pahat

86400, Malaysia^2

关键词: Acid concentrations;    Commercial activated carbons;    Impregnation methods;    Iodine adsorption;    Optimum conditions;    Optimum value;    Sugar-cane bagasse;    Textile wastewater;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/136/1/012061/pdf
DOI  :  10.1088/1757-899X/136/1/012061

来源: IOP

【 摘 要 】

Impregnation method is one of the crucial steps involved in producing activated carbon using chemical activation process. Chemicals employed in this step is effective at decomposing the structure of material and forming micropores that helps in adsorption of contaminants. This paper explains thorough procedures that have been involved in producing sugarcane bagasse activated carbon (SBAC) by using 5%, 10%, 20%, 30% phosphoric acid (H3PO4) during the impregnation step. Concentration of H3PO4 used in the process of producing SBAC was optimized through several tests including bulk density, ash content, iodine adsorption and pore size diameter and the charactesristic of optimum SBAC produced has been compared with commercial activated carbon (CAC). Batch study has been carried out by using the SBAC produced from optimum condition to investigate the performance of SBAC in removal of turbidity and chemical oxygen demand (COD) from textile wastewater. From characteristic study, SBAC with 30% H3PO4 has shown the optimum value of bulk density, ash content, iodine adsorption and pore size diameter of 0.3023 g cm-3, 4.35%, 974.96 mg/g and 0.21-0.41 μm, respectively. These values are comparable to the characteristics of CAC. Experimental result from the batch study has been concluded that the SBAC has a promising potential in removing turbidity and COD of 75.5% and 66.3%, respectively which was a slightly lower than CAC which were able to remove 82.8% of turbidity and 70% of COD. As a conclusion, the SBAC is comparable with CAC in terms of their characteristics and the capability of removing contaminants from textile wastewater. Therefore, it has a commercial value to be used as an alternative of low-cost material in producing CAC.