Column study on Cr(VI)-reduction using the brown seaweed Ecklonia biomass

Journal of Hazardous Materials
Donghee ParkJong Moon Park

Abstract

The potential use of the brown seaweed, Ecklonia, biomass as a bioreductant for reducing Cr(VI) was examined in a continuous packed-bed column. The effects of the operating parameters, such as influent Cr(VI) concentration, influent pH, biomass concentration, flow rate and temperature, on the Cr(VI) reduction were investigated. Increases in the influent Cr(VI) concentration and flow rate or a decrease in the biomass concentration inside the column led to a higher breakthrough of the Cr(VI) ions in the effluent. Particularly, the influent pH and temperature most significantly affected on the breakthrough curve of Cr(VI); a decrease in the influent pH or an increase in the temperature enhanced the Cr(VI) reduction in the column. For process application, a non-parametric model using neural network was used to predict the breakthrough curves of the column. Finally, the potential of the column packed with Ecklonia biomass for Cr(VI) detoxification was demonstrated.

References

Aug 1, 1997·Regulatory Toxicology and Pharmacology : RTP·R A Anderson
Nov 23, 2001·Environmental Science & Technology·Y S YunB Volesky
Oct 24, 2003·Environmental Science & Technology·Veera M BodduEdgar D Smith
Jan 27, 2004·Environmental Science & Technology·Rathinam AravindhanThirumalachari Ramasami
Oct 19, 2004·Environmental Science & Technology·Donghee ParkJong Moon Park
Sep 20, 2005·Bioresource Technology·Donghee ParkJong Moon Park

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Citations

Mar 30, 2013·Environmental Science and Pollution Research International·Girish ChoppalaBalaji Seshadri
Mar 10, 2016·Waste Management·F E HugginsJ C Hower
Jun 3, 2008·Journal of Hazardous Materials·Hyun-Doc ChoiJae-Young Lee
May 28, 2013·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Gabriel D SudituLaura Bulgariu

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