CAJ | 학술논문

用尿素水解均匀沉淀法制备一系列不同的Mg2＋与Al3＋摩尔比的镁铝水滑石（Mg/Al-LDHs）,并研究了镁铝水滑石的焙烧产物（LDO）对阴离子染料茜素黄GG的吸附特征。分别考察了不同镁铝摩尔比的LDO、LDO投加量、反应温度、染料的初始浓度等因素对LDO吸附阴离子染料茜素黄GG的影响。结果表明,对于150mL 30mg/L的茜素黄GG模拟废水溶液,镁铝摩尔比为1：2的镁铝水滑石,投加量为30mg,在25℃下反应150min,去除率可达到100%。三次回收重复利用的LDO对茜素黄的去除率仍为76%以上,LDO是一种良好的环保吸附材料。
용뇨소수해균균침정법제비일계렬불동적Mg2＋여Al3＋마이비적미려수활석（Mg/Al-LDHs）,병연구료미려수활석적배소산물（LDO）대음리자염료천소황GG적흡부특정。분별고찰료불동미려마이비적LDO、LDO투가량、반응온도、염료적초시농도등인소대LDO흡부음리자염료천소황GG적영향。결과표명,대우150mL 30mg/L적천소황GG모의폐수용액,미려마이비위1：2적미려수활석,투가량위30mg,재25℃하반응150min,거제솔가체도100%。삼차회수중복이용적LDO대천소황적거제솔잉위76%이상,LDO시일충량호적배보흡부재료。
A series of magnesium aluminate layered double hydroxides（Mg/Al-LDHs） with different n（Mg）/n（Al） were prepared by the urea hydrolytic homogeneous precipitation method,and the removal of alizarin yellow GG by calcined Mg/Al-LDHs（LDO） was investigated.The effect of Mg/Al ratio,amount of adsorbent,temperature and initial dye concentration were studied.The results showed that 100% alizarin yellow GG was adsorbed by 30mg 1：2 n（Mg）/n（Al） LDO at 25°C after 150min of reaction when in 150mL alizarin yellow GG solution with the concentration of 25mg/L.The removal rate of alizarin yellow GG was above 76% for LDO after three cycles,indicating that LDO is environmental friendly material.