title: Partial desalination and concentration of glyphosate liquor by nanofiltration.
abstract: Partial desalination and concentration of glyphosate liquor by nanofiltration under different operation modes were investigated experimentally in this study. These operation modes were direct nanofiltration, diafiltration, dilute-diafiltration and interval washing-nanofiltration. The four different operation modes were evaluated and compared in terms of glyphosate recovery and NaCl removal. Diafiltration and dilute-diafiltration performed better than direct nanofiltration. The glyphosate loss was between 11.5% and 18.8% when the dilution factor varied from 0.4 to 0.8. Interval washing-nanofiltration alleviated the concentration polarization and membrane fouling to a certain extent. Dilute-diafiltration may be the best operation mode in terms of glyphosate recovery, salt removal and cost.
authors.affiliation: College of Environment, Nanjing University of Technology, Nanjing, Jiangsu, China. xiemingconan@gmail.com
authors.forename: Ming
authors.initials: M
authors.lastname: Xie
authors.forename: Yanhua
authors.initials: Y
authors.lastname: Xu
mesh_terms: D005374:Filtration / Q000379:methods*; D005998:Glycine / Q000031:analogs & derivatives* / Q000032:analysis; D006540:Herbicides / Q000032:analysis*; D036103:Nanotechnology; D012965:Sodium Chloride / Q000737:chemistry*; D000097797:Glyphosate
chemical_list: D005998:Glycine; D006540:Herbicides; D012965:Sodium Chloride; D000097797:Glyphosate