Effect of metal cation ratio on chemical properties of ZnFe2O4/AC composite and adsorption of organic contaminant

International Conference on Chemistry and Material Science 2017

化学;材料科学

Meilia, Demara^1 ; Khunur, Mochamad Misbah^1 ; Setianingsih, Tutik^1

Dept. of Chemistry, Brawijaya University, Malang, Indonesia^1

关键词: Bio chars;    FT-IR spectrum;    LDH (layered double hydroxide);    Metal cation;    NaOH solutions;    Organic contaminant;    Paracetamol;    ZnFe2O4;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/299/1/012036/pdf
DOI  :  10.1088/1757-899X/299/1/012036

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Porous woody char is biochar prepared through pyrolisis. The biochar can be used as adsorbent. In this research, ZnFe2O4/AC composite was synthesized through imregnation of the woody biochar with ZnFe2O4to study effect of mol ratio of Fe(III) and Zn(II) toward their physicochemistry and adsorption of drug wastewater. Paracetamol was used as adsorbate model. This research was conducted in several steps, including activation of the woody biochar using KOH activator at temperatur 500 °C for 15 min to produce the activated carbon, fungsionalization of the carbon using H2SO4oxidator (6M) at temperature of 80 °C for 3 h, impregnation of the oxidized activated carbon with Zn-Fe-LDH (Layered Double Hydroxide) at various mol ratio of Fe(III) and Zn(III), including 1:2, 1:3 and 1:4 using NaOH solution (5M) for coprecipitation, and calcination of Zn-Fe-LDH/AC at 950 °C for 5 min to produce ZnFe2O4/AC. FTIR diffraction characterization indicated existence of M-O (M = Zn(II), Fe(III)) and OH functional groups. FTIR spectra showed increasing of bands connected to -OH by increasing of the ratio till the ratio was achieved at 1:4, then decreased again. The ratio mol showed effect on the adsorption of paracetamol. Profile of adsorption value was fit with changing of functional groups. The highest adsorption was achieved at the ratio of 1:4. After calcination it gave the adsorption value of 17,66 mg/g.