CAJ | 학술논문

以Ca（OH）2，Na2SiO3·9H2O ，H3PO4为原料，采用水热共生法制备出对Cd2＋具有较强吸附性的雪硅钙石/HAp（Tob/HAp）复合材料，通过XRD ，SEM ，原子吸收光谱对材料进行表征和测试，通过不同的吸附时间，温度，p H值和C d2＋初始浓度的单因素实验和正交试验对吸附性能进行分析．结果表明：190℃，反应16 h制备的Tob/HAp复合材料多呈长棒状和微球状．优化吸附条件为pH6．5，初始浓度（I．C．）200mg·L -1，时间30min，温度40℃，平衡吸附量可达79．37 mg · g -1．吸附热力学和动力学拟合结果表明，吸附过程属于Langmuir单分子层吸附，且符合准二级动力学速率方程．
이Ca（OH）2，Na2SiO3·9H2O ，H3PO4위원료，채용수열공생법제비출대Cd2＋구유교강흡부성적설규개석/HAp（Tob/HAp）복합재료，통과XRD ，SEM ，원자흡수광보대재료진행표정화측시，통과불동적흡부시간，온도，p H치화C d2＋초시농도적단인소실험화정교시험대흡부성능진행분석．결과표명：190℃，반응16 h제비적Tob/HAp복합재료다정장봉상화미구상．우화흡부조건위pH6．5，초시농도（I．C．）200mg·L -1，시간30min，온도40℃，평형흡부량가체79．37 mg · g -1．흡부열역학화동역학의합결과표명，흡부과정속우Langmuir단분자층흡부，차부합준이급동역학속솔방정．
Tobermorite/HAp composites was successfully synthesized by in-situ hydrothermal method using Ca(OH)2 ,Na2SiO3 · 9H2O and H3PO4 as the raw materials .This materials has good Cd2+ ion adsorption properties .The crystalline structure ,morphology and adsorp-tion properties were characterized by XRD ,SEM and AAS .The adsorption performance has been studied by signal element experiments and orthogonality experiments .The results show that various Tob/HAp composites present rodlike and microsphere configuration under 190℃ hydrothermal conditions for 16 h .In addition ,the optimized adsorption effect is appeared at 6 .0(pH ) ,200 mg · L -1 (initial concentration ) ,30 min (adsorption time) and 40 ℃ (ad-sorption temperature) .The adsorption process can be described in terms of Langmuir iso-therm and pseudo-second order kinetics .