The usage of activated carbon from teak sawdust (tectona grandis l.f.) and zeolite for the adsorption of Cr(VI) and its analysis using solid-phase spectrophotometry (sps)

International Conference on Advanced Materials for Better Future 2016

Saputro, S.^1 ; Masykuri, M.^1 ; Mahardiani, L.^1 ; Mulyani, B.^1 ; Qorina, I.^1 ; Yoshimura, K.^2 ; Takehara, K.^3 ; Matsuoka, S.^4

Chemistry Education, Faculty of Teacher Training and Education, Sebelas Maret University, Jl. Ir. Sutami 36A, Surakarta, Central Java

57126, Indonesia^1

Kyushu Environmental Evaluation Association, Matsukadai Higashi-ku, Fukuoka

813-0004, Japan^2

Department of Chemistry, Faculty of Sciences, Kyushu University, Motooka, Nishi-ku, Fukuoka

819-0395-744, Japan^3

Department of Environmental Science, Faculty of Science, Niigata University, Ikarashi, Niigata

950-2181, Japan^4

关键词: Adsorption capacities;    Composite adsorbents;    Limit of detection;    Muffle furnaces;    Optimal composition;    Optimum composition;    Sensitive method;    Solid-phase spectrophotometry;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/176/1/012019/pdf
DOI  :  10.1088/1757-899X/176/1/012019

来源: IOP

【 摘 要 】

This study aims to evaluate the usage of teak sawdust and zeolite as an adsorbent of Cr(VI) ion; optimal composition ratio of the composite adsorbent; and the sensitivity of solid-phase spectrophotometry (SPS) as a method to determine the levels of Cr(VI) ion as an adsorption results of adsorbents. The adsorbent used were teak sawdust activated carbon and zeolite as a single and composite adsorbents. The teak sawdust carbonization using muffle furnace and then activated with H3PO410% while the zeolite with H2SO410%. The contacting process of the adsorbents with Cr(VI) was done by varying the compositions. Analysis of Cr(VI) level was done using SPS method. Characterization of adsorbent before and after being activated is done using a FTIR. The results showed that teak sawdust and zeolite can be used as adsorbents to adsorb Cr(VI) in the simulated liquid waste with the adsorption capacity 1.19 μg/g; the optimum composition ratio of teak sawdust activated carbon and zeolite was 75%:25% with the percentage of adsorption was 62.72%. Solid-phase spectrophotometry is a sensitive method to analyze the decreased levels of Cr(VI) as an adsorption results in μg/L level with the limit of detection (LOD) was 0.03 μg/L.