Phytotoxicity of ionic liquids with different structures on wheat seedlings and evaluation of their toxicity attenuation at the presence of modified biochar by adsorption effect. (April 2018)

• Record Type: Journal Article
• Authors: Yu, Fang; Zhou, Yanmei; Cao, Kunxia; Gao, Wenli; Gao, Bin; Sun, Li; Liu, Shengjian; Wang, Lin; Ding, Yanting
• Is Part Of: Chemosphere. Volume 196(2018)
• Page Start: 331
• Page End: 338
• Publication Date: 2018-04
• Subjects: Ionic liquids -- Biochar -- Phytotoxicity -- Wheat -- Adsorption -- Reduction; Pollution -- Periodicals; Pollution -- Physiological effect -- Periodicals; Environmental sciences -- Periodicals; Atmospheric chemistry -- Periodicals; 551.511
• DOI: 10.1016/j.chemosphere.2017.12.148
• Languages: English
• ISSNs: 0045-6535

Abstract

Abstract: The toxic effects of eight common ionic liquids (ILs) on wheat seedlings was evaluated with specific emphasis on the influence of concentration range, anion species and cation chain length of ILs. The growth of wheat seeds was significantly inhibited by ILs, especially under higher concentration, presence of the fluoride anion and the longer alkyl chain length of the cation. The modified biochar (PB-K-N) efficiently removed the ILs from aqueous solutions, the order of the adsorption capacities was as follows: [Bmim]OAc [Bmim]C7 H5 O2 [Bmim]BF4 [Bmim]Br, [Domim]Br [BPy]Br [Omim]Br [Bmim]Br [Emim]Br. Furthermore, the wheat growth of all ILs groups except [Bmim]BF4 group in the presence of PB-K-N was also similar to that of the control groups, which clearly demonstrated that PB-K-N could decrease or alleviate toxicity of ILs toward wheat by adsorption effect. Therefore, the biochar application was effective in improving plant resistance to ILs stress by adsorption, to reduce the phytotoxicity of ILs and provide an alternative approach for the utilization of PB-K-N in ILs contaminated water and soils. Graphical abstract: Image Highlights: The toxic effect of eight ionic liquids (ILs) on wheat seedlings was evaluated. Modified biochar (PB-K-N) all efficiently removed the ILs from aqueous solutions. Explore removal regularities and the possible mechanisms involved in ILs sorption. PB-K-N could strongly decrease or alleviate toxicity of most of ILs toward wheat.