期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 338, 期 -, 页码 47-56出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhazmat.2017.05.021
关键词
Phytoremediation; Consortium; Drench; Typha angustifolia; Paspalum scrobiculatum
资金
- University Grants Commission, New Delhi [SR/PURSE/2010]
- DBT [BT/PR7498/BCE/8/942/2012]
- Council of Scientific and Industrial Research, New Delhi
- Department of Biotechnology, New Delhi under Interdisciplinary programs on Life Sciences for advanced Research and Education [BT/PR4572/INF/22/147/2012]
Field treatment of textile industry effluent was carried out in constructed drenches (91.4 m x 1.2 m x 0.6 m; 65.8 m(3)) planted independently with Typha angustifolia, Paspalum scrobiculatum and their co-plantation (consortium-TP). The in situ treatment of effluent by T. angustifolia, P. scrobiculatum and consortium-TP was found to decrease ADMI color value by 62, 59 and 76%, COD by 65, 63 and 70%, BOD by 68, 63 and 75%, TDS by 45, 39 and 57%, and TSS by 35,31 and 47%, respectively within 96 h. Heavy metals such as arsenic, cadmium, chromium and lead were also removed up to 28-77% after phytoremediation. T. angustifolia and P. scrobiculatum showed removal of Congo Red (100 mg/L) up to 80 and 73%, respectively within 48 h while consortium-TP achieved 94% decolorization. Root tissues of T. angustifolia and P. scrobiculatum revealed inductions in the activities of oxido-reductive enzymes such as lignin peroxidase (193 and 32%), veratryl alcohol oxidase (823 and 460%), laccase (492 and 182%) and azo reductase (248 and 83%), respectively during decolorization of Congo Red. Anatomical studies of roots, FTIR, HPLC, UV-vis Spectroscopy and GC-MS analysis verified the phytotransformation. Phytotoxicity studies confirmed reduced toxicity of the metabolites of Congo Red. (C) 2017 Elsevier B.V. All rights reserved.
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