Characterization of adsorbent derived from Coconut Husk and Silica (SiO2)

8th Annual International Conference 2018 on Science and Engineering

工业技术（总论）

Mariana, M.^1 ; Mulana, F.^1 ; Sofyana, S.^1 ; Dian, N.P.^2 ; Lubis, M.R.^1

Department of Chemical Engineering, Faculty of Engineering, Syiah Kuala University, Darussalam, Banda Aceh, Indonesia^1

Undergraduate Stud. of Department of Chemical Engineering, Faculty of Engineering, Syiah Kuala University, Darussalam, Banda Aceh, Indonesia^2

关键词: Adsorption efficiency;    Ash contents;    Chemical group;    Coconut husk;    FTIR analysis;    National standard;    Type of raw materials;    XRD analysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/523/1/012022/pdf
DOI  :  10.1088/1757-899X/523/1/012022

学科分类：工业工程学

来源: IOP

【 摘 要 】

Activated carbon is one of the most commonly used adsorbents because of its high adsorption effectiveness. However, an adsorbent with one type of activated carbon causes a lacking of adsorption efficiency. Therefore, in this study we prepared activated carbon from two types of raw materials. The type of raw material is a combination of coconut husk and silica with several products of activated carbon that contained coconut husk and silica with mass ratio of 70:30, coconut husk with and without activation and pure silica (SiO2). In this study, raw materials were physically heated at 800 ° C for 2 hours and chemically activated with H2SO4 solution for 2 hours. FTIR analysis identified a chemical group of Si-O in adsorbent at 898,83-1442,74 cm-1. XRD analysis showed that the prepared activated carbon of combination coconut husk:silica; coconut husk with activation; coconut husk without activation and pure silica had silica (SiO2) composition of 83%; 75%; 62.4% and 63.2%, respectively. The water content in activated carbon of combination coconut:silica; coconut husk with activation; coconut husk without activation and pure silica (SiO2) was 4.41%; 3.87%; 3.21% and 2.71%, respectively and the ash content was 3.9%, 2.04%; 1.86% and 0.32% respectively. Both water content and ash content met Indonesian National Standard (SNI) No. 06-3730-1995 with the maximum of ash and water content was 10% and 15%.