摘要
针对目前大部分饮用水存在的卫生安全隐患和健康问题,提出以电气石作为多功能净水剂。经不同温度热处理后,电气石FTIR吸收发生峰强度变弱甚至消失、峰位置移位等现象。低温热处理后电气石可以快速将酸性溶液调节为弱碱性,对强碱性溶液也有调节为弱碱性的趋势。800℃热处理后电气石对氟离子吸附去除率可达64%以上,重金属离子去除率均在96%以上。电气石还可将水分子17 O NMR半高幅宽由102Hz降低至72Hz,有效减小了水分子团簇结构,并使水中溶解氧的质量浓度由5.60mg/L提高到6.11mg/L。
Tourmaline was proposed as a multi-functional purifying agent to reduce the safety and health risks of drinking water.After heat treatment at different temperatures,some tourmaline FTIR absorption peaks intensity were weakened or even disappeared and peaks position were translocated.Low-temperatures treated tourmaline could quickly adjust acidic solution to weak alkaline.Moreover,there was a tendency to adjust strong alkaline solution to weak alkaline.After heat treatment at 800℃,the tourmaline could remove fluoride ion and heavy metal ions effectively,and the removal rates was more than 64% and 96%,respectively.In addition,tourmaline could reduce 17O NMR full width at half maximum intensity from 102 Hz to 72 Hz,reduce the cluster structure of water molecules and increase dissolved oxygen in water from 5.60mg/L to 6.11mg/L.
出处
《吉林大学学报(地球科学版)》
EI
CAS
CSCD
北大核心
2011年第1期235-240,共6页
Journal of Jilin University:Earth Science Edition
基金
国家'863'计划项目(2007AA06A410)
关键词
热处理
电气石
净水剂
heat treatment; tourmaline; purifying agent