湖北农业科学
湖北農業科學
호북농업과학
2014年
12期
2784-2787
,共4页
木薯淀粉%交联羧甲基淀粉%Cr3+%吸附
木藷澱粉%交聯羧甲基澱粉%Cr3+%吸附
목서정분%교련최갑기정분%Cr3+%흡부
cassava starch%cross-linking carboxymethylated starch%Cr3+%adsorptoin
采用搅拌球磨机对木薯淀粉进行机械活化，以活化60 min的木薯淀粉为原料合成交联羧甲基淀粉，考察交联羧甲基淀粉对Cr3+的静态吸附行为和动力学性质，并对吸附机理进行了探讨。结果表明，交联羧甲基淀粉对Cr3+有很好的吸附作用，在常温、吸附时间60 min、Cr3+浓度0.06 mg/mL、pH 3.3条件下，交联羧甲基淀粉对Cr3+的吸附容量为15.3 mg/g。吸附受颗粒内扩散控制，其过程符合Freundlich等温方程。吸附机理推测是物理吸附和化学吸附的综合作用。
採用攪拌毬磨機對木藷澱粉進行機械活化，以活化60 min的木藷澱粉為原料閤成交聯羧甲基澱粉，攷察交聯羧甲基澱粉對Cr3+的靜態吸附行為和動力學性質，併對吸附機理進行瞭探討。結果錶明，交聯羧甲基澱粉對Cr3+有很好的吸附作用，在常溫、吸附時間60 min、Cr3+濃度0.06 mg/mL、pH 3.3條件下，交聯羧甲基澱粉對Cr3+的吸附容量為15.3 mg/g。吸附受顆粒內擴散控製，其過程符閤Freundlich等溫方程。吸附機理推測是物理吸附和化學吸附的綜閤作用。
채용교반구마궤대목서정분진행궤계활화，이활화60 min적목서정분위원료합성교련최갑기정분，고찰교련최갑기정분대Cr3+적정태흡부행위화동역학성질，병대흡부궤리진행료탐토。결과표명，교련최갑기정분대Cr3+유흔호적흡부작용，재상온、흡부시간60 min、Cr3+농도0.06 mg/mL、pH 3.3조건하，교련최갑기정분대Cr3+적흡부용량위15.3 mg/g。흡부수과립내확산공제，기과정부합Freundlich등온방정。흡부궤리추측시물리흡부화화학흡부적종합작용。
The cross-linking carboxymethyl starch was prepared using the cassava starch mechanically activated for 60 min by a ball-stirring mill. The static adsorption behavior and kinetics of the cross-linking carboxymethyl starch on Cr3+ were investigated. The adsorption mechanism was studied. The results showed that the cross-linking carboxymethyl starch could adsorb Cr3+ with 15.3 mg/g when the dosage of cross-linking carboxymethyl starch was 0.10 g, Cr3+ initial concentration was 0.06 mg/mL with pH of 3.3 and the adsorption time of 60 min. The adsorption was an intraparticle diffusion process. The adsorption process was adapted to Freundlich equation. The adsorption was comprehensive action of physical adsorption and chemical adsorption.
