新型重金属捕捉剂的除锑试验研究
Experimental Study on Antimony Removal with New Heavy Metal Capture Agents
秦华1
作者信息
- 1. 中铝生态环保技术(湖南)有限公司,长沙 410000
- 折叠
摘要
巯基对锑具有较好的配位能力,因此研发人员将巯基嫁接至设计的分子骨架上,合成新型重金属捕捉剂(HMC-1).试验采用HMC-1 处理印染废水中的Sb(Ⅴ),研究不同HMC-1 投加量、pH和共存离子等因素对Sb(Ⅴ)去除效果的影响.试验结果表明,最优条件下,HMC-1投加量为100 mg/L,pH为4.0±0.2,共存阴离子浓度为 0 mg/L,Sb(Ⅴ)去除率可以达到 92.33%,Sb(Ⅴ)浓度由 3.00 mg/L降低到 0.23 mg/L.印染废水处理后,出水满足《锡、锑、汞工业污染物排放标准》(GB 30770-2014)的要求.相比其他处理方法,该重金属捕捉剂对废水中Sb(Ⅴ)的去除效果好,处理速度快,投加量小且成本低,具有较好的市场应用前景.
Abstract
The thiol group has good coordination ability with antimony,so researchers grafted the thiol group onto the designed molecular framework to synthesize a new heavy metal scavenger(HMC-1).The experiment uses HMC-1 to treat Sb(Ⅴ)in printing and dyeing wastewater,and studies the effects of different HMC-1 dosages,pH,and coexisting ions on the removal efficiency of Sb(Ⅴ).The experimental results show that under optimal conditions,the dosage of HMC-1 is 100 mg/L,pH is 4.0±0.2,and the concentration of coexisting anions is 0 mg/L,and the removal rate of Sb(Ⅴ)can reach 92.33%,and the concentration of Sb(Ⅴ)can be reduced from 3.00 mg/L to 0.23 mg/L.After the treatment of printing and dyeing wastewater,the effluent meets the requirements of the"Industrial Pollutant Discharge Standards for Tin,Antimony,and Mercury"(GB 30770-2014).Compared with other treatment methods,this heavy metal capture agent has better removal efficiency for Sb(Ⅴ)in wastewater,fast treatment speed,small dosage,and low cost,which has good market application prospects.
关键词
巯基嫁接/重金属捕捉剂/除锑Key words
thiol grafting/heavy metal capture agents/antimony removal引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据