摘要
利用膨润土、D2 0 2阴离子交换树脂对含 As( )废水进行了吸附实验 ,结果表明 ,膨润土、D2 0 2阴离子交换树脂对 As( )的吸附分别在 1h、2 h内达到平衡 ,其饱和吸附量分别为 :2 1.2 mg/ g、5.0 9mg/ g.废水中 Ga3+、In3+的共存使膨润土吸附 As( )的能力大大提高 ,却使树脂的吸附能力下降 ,比较而言 ,用膨润土处理半导体材料废水中的 As( )
Removal of As(Ⅴ) from wastewater by bentonite and D202 resin was studied. The results show that the adsorption of bentonite and D202 reach equilibrium within 1 h, 2 h with the saturated adsorption amount 21.2 mg/g(D202) and 5.09 mg/g(bentonite), respectively. The peak values of adsorption amount of bentonite appear at pH=4 and pH=7, and the adsorption is probable a specific one. The adsorption amout of D202 increase slowly with pH rising up. The adsorption amount of bentonite would be enhanced obviously under present of Ga\+\{3+\} and In\+\{3+\}, while, that of D202 resin reduced. Bentonite is suitable for Semi\|conductor wastewater treatment.
