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研究了红茶粉末作为生物吸附剂对结晶紫的吸附性能。分别考察了吸附时间、红茶投加量、结晶紫初始浓度、pH值、温度和盐浓度等因素对红茶粉末吸附结晶紫性能的影响。结果表明:红茶粉末对结晶紫吸附效果较好,吸附反应时间180min基本达到平衡;红茶投加量越多,吸附率越高,吸附量越低。红茶吸附结晶紫为吸热反应,升高温度利于结晶紫吸附。盐加入不利于结晶紫吸附。红茶吸附结晶紫符合Langmuir和Freundlich吸附等温方程,最大吸附容量为108.70mg/g(313K)。
The adsorption properties of black tea powder as a biosorbent to crystal violet were studied. The effects of adsorption time, dosage of black tea, initial concentration of crystal violet, pH value, temperature and salt concentration on the properties of black tea powder were investigated. The results showed that the black tea powder had a good adsorption effect on crystal violet and the equilibrium reaction time was basically 180min. The more black tea was added, the higher the adsorption rate, the lower the adsorption capacity. Black tea adsorption crystal violet endothermic reaction, increasing the temperature conducive to crystal violet adsorption. Salt is not conducive to crystal violet adsorption. The adsorption of crystal violet on black tea accords with Langmuir and Freundlich adsorption isotherm equation, the maximum adsorption capacity is 108.70mg / g (313K).