摘要
染料是一种毒性强、不易生物降解的化学物质,是水体污染的主要工业污染源之一,提高染料废水处理性能是亟需解决的问题。采用分子筛HZSM-5吸附去除直接黑19染料,以吸附去除率和吸附量作为评价HZSM-5吸附去除性能的指标,探究HZSM-5用量、pH、温度、染料初始质量浓度、吸附时间等因素对吸附性能的影响。结果表明,HZSM-5用量越大,HZSM-5吸附去除率越高,吸附量越低;38.6℃时,HZSM-5吸附去除率较高;随着直接黑19染料初始质量浓度的增加,HZSM-5吸附去除率呈下降趋势;酸性条件有利于HZSM-5的吸附;当吸附时间达到60 min时,HZSM-5对直接黑19染料的吸附基本达到饱和,且两者间的吸附过程符合准二级动力学模型。
Dye is a chemical substance with strong toxicity and low biodegradability,and it is one of the main industrial pollution sources of water pollution.Therefore,improving the treatment performance of dye wastewater is an urgent problem to be solved.The molecular sieve HZSM-5 was used to adsorb and remove the direct black 19.With the adsorption removal rate and adsorption capacity as the key indicators to evaluate the adsorption and removal performance of HZSM-5,the effects of HZSM-5 dosage,pH,temperature,initial mass concentration of direct black 19 dye,adsorption time and other factors on its adsorption performance are explored.The experimental results showed that the higher the dosage of HZSM-5,the higher the removal rate of direct black 19,the lower the adsorption capacity.At 38.6℃,the removal rate of HZSM-5 was higher.With the increase of the initial mass concentration of direct black 19,the removal rate of HZSM-5 decreased.Acidic conditions were favorable for HZSM-5 adsorption.When the adsorption time reached 60 min,the ad⁃sorption of direct black 19 by HZSM-5 was basically saturated,and the adsorption process between them con⁃formed to the pseudo second order kinetic model.
作者
朱圳
ZHU Zhen(School of Textile Clothing&Arts Media,Suzhou Institute of Trade and Commerce,High-end Textile Intelligent Manufacturing Engineering Research Center of Jiangsu Province,Suzhou 215009,China)
出处
《印染助剂》
CAS
2022年第10期49-52,共4页
Textile Auxiliaries
基金
苏州经贸职业技术学院教科研项目(YJ-ZK2113)
2021年江苏省大学生创新创业训练计划项目(61202140)。
