CAJ | 학술논문

采用L﹣丙氨酸对壳聚糖进行改性，制备了改性壳聚糖，并研究了改性壳聚糖对水溶液中Sr2＋的的吸附性能.结果表明：在吸附时间80 min，吸附温度50℃，吸附剂用量0.1 g ，PH值为10时，L﹣丙氨酸改性壳聚糖对Sr2＋吸附的的吸附率可达31.800%，吸附量为11.925 mg/g；L﹣丙氨酸改性壳聚糖微球对高浓度Sr2＋的吸附量最大可以达到30.650 mg·g﹣1，吸附率最高可达83.3%；等温吸附结果表明，L﹣丙氨酸改性壳聚糖微球对Sr2＋的吸附符合Langmuir等温吸附方程；L﹣丙氨酸改性壳聚糖对Sr2＋的吸附过程与准二级动力学具有较高的相关性.
채용L﹣병안산대각취당진행개성，제비료개성각취당，병연구료개성각취당대수용액중Sr2＋적적흡부성능.결과표명：재흡부시간80 min，흡부온도50℃，흡부제용량0.1 g ，PH치위10시，L﹣병안산개성각취당대Sr2＋흡부적적흡부솔가체31.800%，흡부량위11.925 mg/g；L﹣병안산개성각취당미구대고농도Sr2＋적흡부량최대가이체도30.650 mg·g﹣1，흡부솔최고가체83.3%；등온흡부결과표명，L﹣병안산개성각취당미구대Sr2＋적흡부부합Langmuir등온흡부방정；L﹣병안산개성각취당대Sr2＋적흡부과정여준이급동역학구유교고적상관성.
Ⅰn this PaPer,an efficient Procedure to modify chitosan was carried out by the reaction of alanine and chitosan. The adsorPtion behavior of Sr2+ by modified chitosan was investigated. On the condition of the ad-sorPtion time 80 mins,the adsorPtion temPerature 40 ℃,the modified chitosan'squantity 0. 1 g,and the PH value 10,the adsorPtion rate of Sr2+ was uP to 31. 800%,and the adsorPtion quantity was uP to 11. 925 mg/g. The lar-gest adsorPtion quantity was uP to 30. 650 mg/g,and the largest adsorPtion rate was uP to 83. 3 %. The isother-mal showed that the adsorPtion of chitosan modified with alanine for strontiumin accordance with Langmuir isother-mal adsorPtion equation. The adsorPtion Process kinetics accords to the second order equation.