| Literature DB >> 24485750 |
Ya-Li Chen1, Xiao-Qing Hong2, Hui He1, Hong-Wei Luo1, Ting-Ting Qian1, Ru-Zhong Li2, Hong Jiang3, Han-Qing Yu4.
Abstract
In this study, Typha angustifolia was proven to have an excellent accumulation ability in high concentrations of wastewater solutions having Cr (VI) concentrations up to 30 mg L(-1) for 20 days (74% of removal efficiency). Synchrotron microfocus micro X-ray fluorescence (μ-XRF) mapping showed that the uptaken Cr was mainly enriched in the outer layer of the roots and a small portion of it was uniformly distributed in the fronds. The total proteins, soluble sugars, and malondialdehyde in T. angustifolia increased when the concentration of Cr (VI) increased from 9 to 30 mg L(-1). Transmission electron microscope (TEM) assay showed that no lignifications were observed when Cr was absorbed by T. angustifolia. It was concluded that T. angustifolia can uptake Cr by means of surface layer absorption and transportation, and alleviate stresses associated with the sorption of Cr (VI) by thickening of cell walls or secretion of chemical substances.Entities:
Keywords: Biosorption; Heavy metal; Mechanism; Typha angustifolia; μ-XRF mapping
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Year: 2014 PMID： 24485750 DOI： 10.1016/j.biortech.2014.01.022
Source DB: PubMed Journal: Bioresour Technol ISSN： 0960-8524 Impact factor: 9.642