發(fā)布時(shí)間：2018-04-16 10:03

  本文選題：高嶺土 + 氧化鋯��； 參考：《離子交換與吸附》2016年06期

【摘要】：合成了氧化鋯負(fù)載改性的高嶺土吸附劑,并研究了其對(duì)水中F~-的吸附行為。通過XRD和FT-IR對(duì)改性前后的高嶺土進(jìn)行表征,結(jié)果表明,負(fù)載的氧化鋯不影響高嶺土晶型和骨架結(jié)構(gòu)。吸附實(shí)驗(yàn)結(jié)果表明,氧化鋯改性后的高嶺土對(duì)F~-有很高的去除效率,其吸附機(jī)理包括離子交換和靜電作用力,吸附等溫線符合Freundlich等溫吸附模式,吸附動(dòng)力學(xué)可用擬二級(jí)動(dòng)力學(xué)模型擬合。吸附量隨著溶液pH值的升高而降低,共存陰離子能抑制F~-在氧化鋯負(fù)載的高嶺土上的吸附。
[Abstract]:A modified kaolin adsorbent supported on zirconia was synthesized and its adsorption behavior for F- in water was studied.The modified kaolin was characterized by XRD and FT-IR. The results showed that the loaded zirconia did not affect the crystal form and skeleton structure of kaolin.The adsorption results show that the modified kaolin has a high removal efficiency of F-, the adsorption mechanism includes ion exchange and electrostatic force, and the adsorption isotherm accords with the Freundlich isotherm model.The adsorption kinetics can be fitted by the pseudo-second-order kinetic model.The amount of adsorption decreases with the increase of pH value of the solution and coexisting anions can inhibit the adsorption of F- on zirconia supported kaolin.
【作者單位】： 南京曉莊學(xué)院環(huán)境科學(xué)學(xué)院;
【基金】：江蘇省高校自然科學(xué)基金面上項(xiàng)目(No.15KJB610010) 中國博士后科學(xué)基金(No.2015M571832) 2015年江蘇省高等學(xué)校大學(xué)生創(chuàng)新創(chuàng)業(yè)訓(xùn)練計(jì)劃重點(diǎn)項(xiàng)目(No.2893)
【分類號(hào)】：O647.3
，

本文編號(hào)：1758393