Biosorption of MnO4 ? in aqueous solutions using Pinus insularis

4th International Conference on Water Resource and Environment

地球科学;生态环境科学

Nieva, A.D.^1 ; Doma, B.T.^1 ; Chao, H.-P.^2

School of Chemical, Biological and Materials Engineering and Sciences,Mapúa University, Manila, Philippines^1

Department of Environmental Engineering, Chung Yuan Christian University, Chung-Li

32023, Taiwan^2

关键词: Batch adsorption;    Breakthrough point;    Breakthrough time;    Column adsorption;    Experimental curves;    Initial concentration;    Sorbate concentration;    Spiked water;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/191/1/012034/pdf
DOI  :  10.1088/1755-1315/191/1/012034

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The batch adsorption capacity of Pinus insularis in the removal of Mn2+/7+ was 4.51 mg/g which was 90.73% removal. As the initial sorbate concentrations were increased, the amount adsorbed also increased. This is due to the presence of functional groups i.e. -OH, - CH, -COO, -C-OH, -C-H and -COO found in the FTIR results and the SEM results showing rough flat multi-layer surface with small amount of pores of the biosorbent. Elemental analysis also showed presence of counterion Ca2+ on the surface of the biosorbent that may undergo ion-exchange with the sorbate. The column adsorption study shows that the exhaustion point reached 60% of the influent value of 2 mg/L. The exhaust times correspond to C/C0 = 0.6 for Mn2+/7+ onto Pinus insularis at a very low initial concentration of MnO4- aqueous solution. The volumes of Mn2+/7+ spiked water treated at the breakthrough point was 1.254 mL at initial concentration of 2 mg/L, which was the total volume in the column computed by the breakthrough time multiplied by the flowrate. The study predicted the column breakthrough or S-shaped experimental curves of the adsorption wave front.