發(fā)布時間：2018-04-26 15:01

  本文選題：鑭改性 + 凹凸棒土　； 參考：《環(huán)境工程學報》2016年12期

【摘要】：鎖磷劑的應用與推廣加快了人們對鑭改性粘土的不斷研究。為了探討2種制備方法所得的鑭改性凹凸棒土吸附劑對水體中磷酸根的去除效果,首先制備了鑭改性凹凸棒土(La-ATP)及鑭改性酸活化凹凸棒土(La-H-ATP)2種吸附劑,然后在不同條件下研究比較了二者對磷酸根的吸附效果。結(jié)果表明:La-ATP和La-H-ATP對磷酸根吸附曲線適合Langmuir方程,飽和吸附量(qm)均大于12 mg·g~(-1)。高溫有利于La-ATP和La-H-ATP對磷酸根的吸附,并且La-ATP的平衡吸附量(qe)在35、25和10℃條件下均大于La-H-ATP。在酸性條件下,La-ATP具有比La-H-ATP更好的除磷效果。兩種吸附劑對磷酸根具有較好的吸附選擇性,幾種常見共存離子存在時的吸附量無明顯變化。
[Abstract]:The application and popularization of phosphorus-locking agent has accelerated the study of lanthanum-modified clay. In order to study the removal effect of lanthanum modified attapulgite adsorbent on phosphate in water, two kinds of lanthanum modified attapulgite (La-ATPase) and lanthanum modified acid-activated attapulgite (La-H-ATPase) were prepared. Then the adsorption of phosphate was studied under different conditions. The results showed that the adsorption curves of the phosphate radical for the two species were suitable for the Langmuir equation, and the saturated adsorption capacity (QM) was more than 12mg / g ~ (-1) 路g ~ (-1) 路g ~ (-1) 路m ~ (-1). High temperature is favorable to the adsorption of phosphate radical by La-ATP and La-H-ATP, and the equilibrium adsorption capacity of La-ATP is larger than that of La-H-ATP at 35 鈩，

本文編號：1806516