用改性活性炭处理含铬废液和富集金的研究

Studieson the Treating the Abolished Liquid Containing Cr and Riching Au by modified actie carbon

摘要: 经改性的乌桕籽壳活性炭成功地用于对含铬废水的净化处理，尤其是氧化改性后的活性炭对Ｃｒ６＋吸附容量增加明显，而且发现吸附容量随活性炭表面羧羟基比值增加而增加。实验表明，改性后活性炭对金表现出优良的吸附性能，是很好的金富集剂，在溶液酸度为２０％王水介质中吸附效果最佳，少许滤纸浆有助于活性炭对金的吸附

Abstract: This paper studies the appli cation of modified active carbon from fruit shell of chinese tallow tree in treating abolished liquid containing Cr and riching Au.Especially,after oxidizing and modifying the active carbon adsorption ability to Cr 6+ increases obviously,and the ability increases according to the active carbon surfaces ratio of -COOH/-OH.The active carbon is also a kind of good Au adsorbent Modified active carbon adsorbs Au easier .It has the best adsorption quantity in such mixed acid of20...