Year: 2018
Type: conference-paper
Abstract: The batch adsorption capacity of Pinus insularis in the removal of Mn 2+/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 Ca 2+ 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/C 0 = 0.6 for Mn 2+/7+ onto Pinus insularis at a very low initial concentration of MnO 4 − aqueous solution. The volumes of Mn 2+/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.
Authors: A D Nieva, B T Doma, H-P Chao
Institutions: Mapúa University, Chung Yuan Christian University
Language: English
Subfield: Water Science and Technology
Field: Environmental Science
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W2899718917