CAJ | 학술논문

以FeCl3为原料采用浸渍法，获得了载铁活性炭，考察对水中砷的去除能力及影响因素，并对吸附过程进行等温吸附模型和动力学的模拟。实验结果表明，砷去除的最佳条件为：载铁活性炭平衡振荡5 h，pH控制在7。水中常见共存离子除Ca2＋外不影响砷的去除效果，Ca2＋有助于砷的去除。改性炭对砷的吸附能较好的符合Langmuir模型和二级动力学方程，而不符合Freundlich模型，说明这一吸附过程为单分子层吸附。由于活性炭对砷的吸附属于物理吸附，故全过程不引入其他离子，不会对水体造成二次污染。
이FeCl3위원료채용침지법，획득료재철활성탄，고찰대수중신적거제능력급영향인소，병대흡부과정진행등온흡부모형화동역학적모의。실험결과표명，신거제적최가조건위：재철활성탄평형진탕5 h，pH공제재7。수중상견공존리자제Ca2＋외불영향신적거제효과，Ca2＋유조우신적거제。개성탄대신적흡부능교호적부합Langmuir모형화이급동역학방정，이불부합Freundlich모형，설명저일흡부과정위단분자층흡부。유우활성탄대신적흡부속우물리흡부，고전과정불인입기타리자，불회대수체조성이차오염。
Activated charcoal modified by Fe3+is gotten by impregnation method from FeCl3 .Ability of removing As(Ⅴ) from drinking water and its influence factors,isotherm adsorption model and dynamic simulation are studied.The experi-ments showed that when reaction 5 h and the pH value are kept in 7,the reaction condition become the best.The common coexisting ions,except for Ca2+,do not affect the arsenic removal effect,and Ca2+is helpful for arsenic removal.The experi-ments data can be well simulated by both the Langmuir model and second-order kinetics equation.Additionally,the adsorp-tion of As(V)by the modification of activated charcoal belongs to physical absorption.Therefore,other ions won’t be brought into the water by using this method.