CAJ | 학술논문

以带结构正电荷的镁铝层状双金属氢氧化物（Mg-Al-LDH）溶胶为吸附剂系统研究了不同因素对磷吸附去除性能的影响，结果表明：其吸附动力学和吸附等温线分别符合准二级、Elovich速率方程和Langmuir方程，理论饱和吸附量可达55.99～60.90 mg/g。吸附过程的ΔG0为-28.78~-20.67 kJ/mol，吸附机理以静电吸引和化学吸附为主导。无机和有机阴离子会抑制磷在吸附剂上的吸附。200 mg/L的Mg-Al-LDH可以吸附90%以上的溶解性反应磷和84%的总磷，可以实现废水和富营养化水体中过量磷的吸附去除。
이대결구정전하적미려층상쌍금속경양화물（Mg-Al-LDH）용효위흡부제계통연구료불동인소대린흡부거제성능적영향，결과표명：기흡부동역학화흡부등온선분별부합준이급、Elovich속솔방정화Langmuir방정，이론포화흡부량가체55.99～60.90 mg/g。흡부과정적ΔG0위-28.78~-20.67 kJ/mol，흡부궤리이정전흡인화화학흡부위주도。무궤화유궤음리자회억제린재흡부제상적흡부。200 mg/L적Mg-Al-LDH가이흡부90%이상적용해성반응린화84%적총린，가이실현폐수화부영양화수체중과량린적흡부거제。
The effects of different factors on phosphorus adsorbing and removing capacities have been studied systematically by using a kind of Mg-Al layered double hydroxides (Mg-Al-LDH) sol having positive charge as adsorbent. The results show that both of its adsorption kinetics and adsorption isotherm accord with pseudo second order,Elovich rate equation and Langmuir equation,respectively. Its theoretical adsorption saturation quantity can reach 55.99-60.90 mg/g,adsorption process ΔG0 is -28.78--20.67 kJ/mol,and adsorption mechanism is mainly based on electro-static attraction and chemisorption. Inorganic and organic anions can restrain the adsorption of phosphorus on Mg-Al-LDH adsorbent. 200 mg/L of Mg-Al-LDH can adsorb out 90%or more of soluble reactive phosphorus and 84% of total phosphorus,realizing the adsorption of excess phosphorus from wastewater and eutrophic water samples.