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Please use this identifier to cite or link to this item: http://repository.li.mahidol.ac.th/dspace/handle/123456789/42657
Title: Phytoremediation of cadmium-polluted soil by Chlorophytum laxum combined with chitosan-immobilized cadmium-resistant bacteria
Authors: Benjaphorn Prapagdee
Jiraporn Wankumpha
Faculty of Environment and Resource Studies, Mahidol University
Keywords: Environmental Science
Issue Date: 1-Aug-2017
Citation: Environmental Science and Pollution Research. Vol.24, No.23 (2017), 19249-19258
Abstract: © 2017, Springer-Verlag GmbH Germany. This study examined the performance of the chitosan-immobilized cadmium-resistant bacteria Arthrobacter sp. and Micrococcus sp. on cadmium phytoremediation by Chlorophytum laxum in cadmium-polluted soil. These immobilized cadmium-resistant bacteria can survive in cadmium-contaminated soil and significantly increased soil cadmium solubility, but the ability of chitosan-immobilized cells to increase cadmium solubility was lower than that of free cells. A pot experiment demonstrated that chitosan-immobilized Micrococcus sp. promoted the growth of C. laxum planted in cadmium-contaminated soil. A significant increase in the cadmium concentration in the roots and aboveground parts of C. laxum was found in plants inoculated with free and chitosan-immobilized cells of these bacteria. The performance of Arthrobacter sp. free cells to augment cadmium accumulation in C. laxum was a little bit better than that of chitosan-immobilized Arthrobacter sp., except at 9 weeks after planting. The phytoextraction coefficient, bioaccumulation factor, and translocation factor of C. laxum inoculated with free and chitosan-immobilized cells of cadmium-resistant bacteria were higher than those of the uninoculated control and increased with time. Our findings suggest that chitosan-immobilized cells can be exploited to enhance the efficiency of cadmium phytoremediation by C. laxum.
URI: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85021705810&origin=inward
http://repository.li.mahidol.ac.th/dspace/handle/123456789/42657
ISSN: 16147499
09441344
Appears in Collections:Scopus 2016-2017

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