title: An artificially constructed Syngonium podophyllum-Aspergillus niger combinate system for removal of uranium from wastewater.
abstract: Aspergillus niger was inoculated to the roots of five plants, and the Syngonium podophyllum-A. niger combinate system (SPANCS) was found to be the most effective in removing uranium from hydroponic liquid with initial uranium concentration of 5 mg L(-1). Furthermore, the hydroponic experiments on the removal of uranium from the hydroponic liquids with initial uranium concentrations of 0.5, 1.0, and 3.0 mg L(-1) by the SPANCS were conducted, the inhibitory effect of A. niger on the growth of S. podophyllum in the SPANCS was studied, the accumulation characteristics of uranium by S. podophyllum in the SPANCS were analyzed, and the Fourier transform infrared (FT-IR) and extended X-ray absorption fine structure (EXAFS) spectra were measured. The results show that the removal of uranium by the SPANCS from the hydroponic liquids with initial uranium concentrations of 0.5, 1.0, and 3.0 mg L(-1) reached 98.20, 97.90, and 98.50%, respectively, after 37 days of accumulation of uranium; that the uranium concentrations in the hydroponic liquids decreased to 0.009, 0.021, and 0.045 mg L(-1), respectively, which are lower than the stipulated concentration for discharge of 0.050 mg L(-1) by the People's Republic of China; that A. niger helped to generate more groups in the root of S. podophyllum which can improve the complexing capability of S. podophyllum for uranium; and that the uranium accumulated in the root of S. podophyllum was in the form of phosphate uranyl and carboxylic uranyl.
authors.affiliation: Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, 28 West Changsheng Road, Hengyang, 421001, Hunan, People's Republic of China.
authors.forename: Jia-dong
authors.initials: JD
authors.lastname: He
authors.affiliation: Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, 28 West Changsheng Road, Hengyang, 421001, Hunan, People's Republic of China.
authors.forename: Yong-dong
authors.initials: YD
authors.lastname: Wang
authors.affiliation: Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, 28 West Changsheng Road, Hengyang, 421001, Hunan, People's Republic of China.
authors.forename: Nan
authors.initials: N
authors.lastname: Hu
authors.affiliation: Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, 28 West Changsheng Road, Hengyang, 421001, Hunan, People's Republic of China. dingdxzzz@163.com.
authors.forename: Dexin
authors.initials: D
authors.lastname: Ding
authors.affiliation: Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, 28 West Changsheng Road, Hengyang, 421001, Hunan, People's Republic of China.
authors.forename: Jing
authors.initials: J
authors.lastname: Sun
authors.affiliation: Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, 28 West Changsheng Road, Hengyang, 421001, Hunan, People's Republic of China.
authors.forename: Qin-wen
authors.initials: QW
authors.lastname: Deng
authors.affiliation: Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, 28 West Changsheng Road, Hengyang, 421001, Hunan, People's Republic of China.
authors.forename: Chang-wu
authors.initials: CW
authors.lastname: Li
authors.affiliation: Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, 28 West Changsheng Road, Hengyang, 421001, Hunan, People's Republic of China.
authors.forename: Fei
authors.initials: F
authors.lastname: Xu
mesh_terms: D029064:Araceae / Q000254:growth & development / Q000378:metabolism* / Q000382:microbiology*; D001234:Aspergillus niger; D002681:China; D018527:Hydroponics; D010710:Phosphates; D018517:Plant Roots / Q000254:growth & development / Q000378:metabolism* / Q000382:microbiology; D011035:Podophyllum; D017550:Spectroscopy, Fourier Transform Infrared; D014501:Uranium / Q000032:analysis / Q000378:metabolism*; D017974:Uranium Compounds; D062065:Wastewater / Q000032:analysis; D014875:Water Pollutants, Radioactive / Q000032:analysis / Q000378:metabolism*; D056928:X-Ray Absorption Spectroscopy
chemical_list: D010710:Phosphates; D014501:Uranium; D017974:Uranium Compounds; D062065:Wastewater; D014875:Water Pollutants, Radioactive; C075963:hydrogen uranyl phosphate
keywords: Aspergillus niger; Combinate system; Phytoremediation; Syngonium podophyllum; Uranium wastewater