摘要
引言草甘膦[N-（膦羧甲基）甘氨酸,（HO）2P（O）CH2NHCH2COOH]是一种高效广谱的灭生性、内吸传导型优秀除草剂。1971年由美国D.D.贝尔德等发现,由美国孟山都公司开发生产,到20世纪80年代已经成为世界上销售量最大、增长速度最快的除草剂品种之一[1-4]。草甘膦的合成方法有多种[5-9],国内生产厂家大都采用甘氨酸（NH2CH2COOH）法,其生产废水中残留成分主要有草甘膦、甘氨酸、氯化钠等[10-11]。
Using alkalescent functional fiber FFA-1 and resin D301 as adsorbent,some effective components in wastewater from glyphosate production such as glyphosate and glycine were recovered by process of dynamic adsorption-desorption.The dynamic adsorption conditions were optimized.4 g alkalescent fiber FFA-1,6 g D301-C and 4 g activated carbon were packed and filled in a column,and FFA-1 column was at the bottom and D301-C column was at the top.Height/diameter ratio of both columns was 6.25.The wastewater of 200 g was pumped continuously into FFA-1 column and temperature was controlled at the range of 30℃ to 35℃.The wastewater flow rate was 1.6 ml·min-1 for FFA-1 column and 1.3 ml·min-1 for D301-C column respectively.The recovery efficiencies of glyphosate and glycine were 95% and 92% respectively,and the color of wastewater was from yellow to colorless.1.0 mol·L-1 NaOH solution was used as a desorption solvent,and the desorption rates of glyphosate and glycine were 98% and 94%,respectively.The experimental results showed that alkalescent fiber FFA-1 and D301 resin had higher regeneration ability.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2013年第4期1453-1458,共6页
CIESC Journal
基金
河南省郑州科技局科技攻关基金项目(0910SGYG23256-6)~~
