新型吸附树脂对水中苯的吸附行为

研究表明，苯对人的毒性作用表现在中枢神经系统，65g／m^3的苯可引起广泛的出血导致死亡。反复暴露的低浓度苯主要对血液及造血组织产生毒性作用。根据苯吸入致白血病的流行病学研究数据，采用定量外推法计算出饮用水苯质量浓度为0．01mg/L时终身患癌的超额危险度为10^-5，因此饮用水中的苯的限值为0．01mg／L。因此，有效去除饮水中的苯具有重要的意义。

Adrsorption of benzene in aqueous solution with new adsorption resins

A comparison was made of adsorption characteristics and adsorption thermodynamics about benzene in aqueous solution onto new adsorption resins ZH-00 and ZH-03 prepared in this laboratory.The static equilibrium adsorption isotherms in the temperature range of 283-293K were measured.The results show that Langmuir equation can give a better fitting for the data from the above adsorption isotherms and the process of adsorption for benzene in aqueous solution with the two new adsorbents is an exothermic,monomolecular layer,physical one,and the temperature has an important effect on the adsorption process.The static efficiency of removal of benzene reaches 90 percent at the low concentration and the breakthrough capacities of benzene on ZH-00 and ZH-03 are 40.1 and (45.6 mg)/(ml dry resin),respectively.