CAJ | 학술논문

制备了铁改性活性炭，通过快速动态小柱实验研究了活性炭改性前后对镉的吸附性能，同时考察了进水 pH、进水流量和初始质量浓度等因素对吸附材料穿透特性的影响，最后对铁改性活性炭再生方法进行了研究．结果表明，铁改性活性炭对镉的吸附量是未改性活性炭的3．7倍，负载的铁氧化物大大提高了改性活性炭对镉的吸附能力，同时铁改性活性炭对镉的吸附受溶液 pH、进水流量和初始质量浓度的影响．0．05 mol·L－1的 EDTA－2Na 溶液能有效再生吸附饱和后的改性活性炭，再生后的改性活性炭可重复使用．
제비료철개성활성탄，통과쾌속동태소주실험연구료활성탄개성전후대력적흡부성능，동시고찰료진수 pH、진수류량화초시질량농도등인소대흡부재료천투특성적영향，최후대철개성활성탄재생방법진행료연구．결과표명，철개성활성탄대력적흡부량시미개성활성탄적3．7배，부재적철양화물대대제고료개성활성탄대력적흡부능력，동시철개성활성탄대력적흡부수용액 pH、진수류량화초시질량농도적영향．0．05 mol·L－1적 EDTA－2Na 용액능유효재생흡부포화후적개성활성탄，재생후적개성활성탄가중복사용．
This study investigated the effect of activated carbon and iron-modified activated carbon on the adsorption of cadmium through rapid small-scale column tests (RSSCTs ).The breakthrough performance of the system was evaluated at different pH value,flow rate and initial feed concentration.The regeneration method of iron-modified activated carbon was also studied. The results indicated that loaded iron oxide significantly enhanced activated carbon’s adsorption for cadmium.The adsorption capacity of cadmium on iron-modified activated carbon is 3.7 times as high as that on the activated carbon.Meanwhile,cadmium adsorption was dependent on influent pH value,flow rate and initial feed concentration.Modified activated carbon was regenerated effectively with 0.05 mol·L-1 EDTA-2Na solution after cadmium breakthrough, and the regenerated iron-modified activated carbon could be reused.