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Phytoremediation of metal-contaminated soils by the hyperaccumulator canola (Brassica napus L.) and the use of its biomass for ethanol production

Authors
Dhiman, Saurabh SudhaSelvaraj, ChandraboseLi, JinglinSingh, RanjithaZhao, XinKim, DongwookKim, Jae YoungKang, Yun ChanLee, Jung-Kul
Issue Date
1-11월-2016
Publisher
ELSEVIER SCI LTD
Keywords
Ethanol; Fungal consortia; Heavy metal; Hyperaccumulator; Phytoremediation
Citation
FUEL, v.183, pp.107 - 114
Indexed
SCIE
SCOPUS
Journal Title
FUEL
Volume
183
Start Page
107
End Page
114
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/86894
DOI
10.1016/j.fuel.2016.06.025
ISSN
0016-2361
Abstract
This study evaluates the phytoremediation potential of canola biomass, which was grown on soils contaminated by several metals. The increase in metal concentration was measured in different parts of the growing biomass. Nearly 95 mg zinc/kg soil of the zinc supplied to the soil accumulated within the roots of canola. To test the suitability of the canola biomass for bioethanol production, a saccharification was performed after phytoextraction of metals. Armillaria gemina and Pholiota adiposa were co-cultured to obtain a highly active lignocellulase cocktail. Saccharification yields (SY) of 71.8% and 74.4% were obtained with biomass contaminated with nickel and copper, respectively. Under similar conditions, Celluclast (R) 1.5 L in combination with commercial beta-glucosidase resulted in a SY of 73.4%. Fermentation using the hydrolysate of canola biomass used in the phytoremediation yielded 68.9% of bioethanol. To our knowledge, this is the first study where canola biomass used for phytoremediation was tested for bioethanol production through saccharification. (C) 2016 Elsevier Ltd. All rights reserved.
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