摘要
以小分子的乙二胺与环氧氯丙烷为原料,以黏度为考察对象,对高分子重金属螯合剂的前体物合成条件进行优化。采用单因素实验确定黏度的主要影响因素,然后采用响应面法对制备条件进行优化。结果表明:(1)拟合的模型回归项显著而失拟项不显著,拟合性良好。(2)最佳制备条件为环氧氯丙烷和乙二胺摩尔比1.1、反应温度82.8℃、反应时间9.2h、NaOH和乙二胺摩尔比1.2。(3)产物傅立叶红外光谱表明,特征官能团的存在证明了前体物的生成。(4)利用前体物进一步合成了螯合剂,该螯合剂的Pb去除和稳定效果明显优于市售螯合剂。
The precursor of new macromolecular heavy metal chelating agent was synthesized using amine and epichlorohydrin.Taking the viscosity as the indicator,effects of different factors were investigated and the optimal reaction conditions were determined by response surface methodology.The results showed that:(1)the regression of the model was significant and lack of fit was not significant,which indicated the model fit the experimental data well.(2)The determined optimal synthesis parameters were molar ratio of epichlorohydrin to amine of 1.1,temperature of 82.8℃,reaction time of 9.2 hours,molar ratio of sodium hydroxide to amine of 1.2,respectively.(3)The synthetized precursor was analyzed by FTIR and it was further used for heavy metal chelating agent synthesis.(4)Heavy metal chelating agent synthesized with the precursor was shown to have better removal and stabilization effect than that of present commercial ones.
作者
王峰
宋倩楠
唐一
童立志
胡滨
杨晓进
胡清
WANG Feng;SONG Qiannan;TANG Yi;TONG Lizhi;HU Bin;YANG Xiaojin;HU Qing(Schoolof EnvironmentalScience&Engineering,Southern University of Scienceand Technology,Shenzhen Guangdong 510085;School of Chemical Engineering,Beijing University of Chemical Technology,Beijing 100029;EngineeringInnovation Center(Beijing),Southern Universityof Scienceand Technology,Beijing 100083;SchoolofEnvironment,HarbinInstituteofTechnology,Harbin Heilongjiang 150090)
出处
《环境污染与防治》
CAS
CSCD
北大核心
2020年第1期1-6,共6页
Environmental Pollution & Control
基金
国家重点研发计划“固废资源化”重点专项(No.2018YFC1902904)
深圳市科技计划项目(No.JSGG20160429191853857)
关键词
响应面法
重金属
螯合剂
合成
response surface methodology
heavy metals
chelating agent
synthesis