Optimization of Immobilized Microorganisms Technology to Cr (VI) in Wastewater

Abstract:

In order to establish a low cost and high efficiency immobilized microorganism system to treat Cr (VI) wastewater, the effects to removal capacity to Cr (VI) of microbe strain, additives and medium were investigated. These strains were immobilized with SA (sodium alginate) by immobilized microorganism technology combined with three additives CNTs (carbon nanotubes), activated carbon, straw and nutrient source, respectively. The results showed that three kinds of additives could improve the removal effect to Cr (VI), and the removal rate up to 30% when Cr (VI) concentration was 10mg/L. There was not a significant difference among these additives. The solution contains 40% medium could significantly improve the removal capacity to Cr (VI). The removal rate could reach more than 98% when Cr (VI) concentrations were 10mg/L-20mg/L. Therefore, efficient strains, additives and medium could improve the removal capacity to Cr (VI) of immobilized microorganism technology. It can be widely used in chromium contaminated wastewater.

• Periodical: Advanced Materials Research (Volumes 1092-1093)
• Pages: 886-891
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1092-1093.886
• Online since: March 2015
• Authors: Yan Xu*, Xiao Ming Chen, Chao Wang, Chen Ruan, Xiao Ling Liu, Shou Song
• Keywords: Additives, Carbon Nanotubes (CNTs), Chromium-Contained Wastewater, Immobilized Microorganism, Medium, Removal Rate

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