Removal of Low Concentration Chromium (III) from Aqueous Solution with 4 Microbial Biosorbents

Abstract:

The low concentration Chromium (Ⅲ) adsorption was studied by 4 biosorbents (TP, XB, MY and TQ), which were isolated from Chrome-tanned leather construction section sludge. Batch experiments were carried out to investigate the effect of contact time, solution pH, biomass dosage, initial concentration of copper and temperature on biosorption efficiency. The experiment results showed that the concentration of chromium (Ⅲ) could meet the national standard (≤1.5mg/L) after treatment. The optimal pH value, mass concentration and temperature of biosorption was 4.0, 0.5g/L and 30°C, respectively. When the biosorbent were treated by [ NaOH ]= 0.3 mol/L, absorption capacitie was increased by 34.54%、23.21%、17.86% and 38.96% respectively. And from the results of SEM (Scanning electron microscope) and FT-IR (Fourier Transform infrared spectroscopy), the structure and functional groups of biosorbents was changed after the biosorption.

• Periodical: Advanced Materials Research (Volumes 610-613)
• Pages: 1863-1870
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.610-613.1863
• Online since: December 2012
• Authors: Xin Li, Yong Liang Sun, Lin Zhou, Ju Fang Wang, Wen Jian Li
• Keywords: Biosorption, Cr(III), Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscope (SEM)

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