CAJ | 학술논문

以菜粕为原料，采用磷酸活化法制备了孔隙发达的活性碳，通过扫描电子显微镜和表面孔隙测定仪对样品进行了表征，考察了菜粕活性碳对水溶液中甲基橙的吸附性能.试验结果表明，制备的活性碳表面形成了具有发达的孔隙结构，比表面积为1521.2 m2/ g，平均孔径为1.49 nm.所制备的活性碳对甲基橙的吸附过程符合伪二级反应动力学方程，qe 的计算值与实测值有较高的一致性.采用 Freundlich 和 Langmuir 方程考察菜粕对甲基橙吸附等温线，实验结果显示吸附更符合 Langmuir 模型，在283、293和313 K 时，其最大吸附量（qm ）分别为337、366和376 mg·g -1.甲基橙溶液初始浓度100 mg/ L，投加量为0.3 g/ L，pH 值为3，反应时间2 h 去除率可以达到90％以上，菜粕活性碳能有效去除水溶液中的甲基橙.
이채박위원료，채용린산활화법제비료공극발체적활성탄，통과소묘전자현미경화표면공극측정의대양품진행료표정，고찰료채박활성탄대수용액중갑기등적흡부성능.시험결과표명，제비적활성탄표면형성료구유발체적공극결구，비표면적위1521.2 m2/ g，평균공경위1.49 nm.소제비적활성탄대갑기등적흡부과정부합위이급반응동역학방정，qe 적계산치여실측치유교고적일치성.채용 Freundlich 화 Langmuir 방정고찰채박대갑기등흡부등온선，실험결과현시흡부경부합 Langmuir 모형，재283、293화313 K 시，기최대흡부량（qm ）분별위337、366화376 mg·g -1.갑기등용액초시농도100 mg/ L，투가량위0.3 g/ L，pH 치위3，반응시간2 h 거제솔가이체도90％이상，채박활성탄능유효거제수용액중적갑기등.
A novel activated carbon(AC)was prepared from rapeseed by chemical activation method using H3 PO4 as activating agent,and was characterized by electron microscope(SEM)scanning and determination of the specific surface area,then the aqueous - solution - prepared AC was used as adsorbent for the adsorption of methyl orange. The prepared activated carbon has rich honeycomb - like structures,and its specific surface area is 1521. 2 m2 ·g - 1 and the average pore size is 1. 49 nm. The adsorption process followed pseudo - second - order kinetics, and equilibrium adsorption amounts calculated from the fitted equations are well in accordance with the experimental values. The absorption isothermals of methyl orange on the activated carbon obeyed the Langmuir isothermal equa-tion. The removal rate of methyl orange is above 90% under the following adsorption condition,methyl orange solu-tion is 100 mg·L - 1 ,the dose of adsorbent is 0. 3 g·L - 1 ,the value of pH is 3 and the reaction time is 2 hours. The aqueous - solution - prepared AC is an ideal absorption material for the removing of methyl orange.