嘉兴学院学报
嘉興學院學報
가흥학원학보
Journal of Jinxing University
2015年
6期
76-82
,共7页
韦晓燕%刘百山%欧阳玉霞%孙萍%谭军
韋曉燕%劉百山%歐暘玉霞%孫萍%譚軍
위효연%류백산%구양옥하%손평%담군
不溶性淀粉黄原酸酯%吸附机理%等温吸附%吸附动力学%吸附热力学
不溶性澱粉黃原痠酯%吸附機理%等溫吸附%吸附動力學%吸附熱力學
불용성정분황원산지%흡부궤리%등온흡부%흡부동역학%흡부열역학
Insoluble xanthates%Adsorption mechanism%Kinetics%Equlibrium%Thermodynamics
以玉米淀粉为原料合成了不溶性淀粉黄原酸酯(ISX),对不溶性淀粉黄原酸酯进行了红外光谱、扫描电镜和 XRD 表征,重点研究了 ISX 去除 Cu2+机理及吸附动力学、吸附平衡等温式和吸附热力学,结果表明,ISX 吸附 Cu2+为离子交换反应,其吸附速率快,符合拟二级动力学,属于 Freundlich 吸附,吸附过程为吸热、熵增、自发的反应过程。
以玉米澱粉為原料閤成瞭不溶性澱粉黃原痠酯(ISX),對不溶性澱粉黃原痠酯進行瞭紅外光譜、掃描電鏡和 XRD 錶徵,重點研究瞭 ISX 去除 Cu2+機理及吸附動力學、吸附平衡等溫式和吸附熱力學,結果錶明,ISX 吸附 Cu2+為離子交換反應,其吸附速率快,符閤擬二級動力學,屬于 Freundlich 吸附,吸附過程為吸熱、熵增、自髮的反應過程。
이옥미정분위원료합성료불용성정분황원산지(ISX),대불용성정분황원산지진행료홍외광보、소묘전경화 XRD 표정,중점연구료 ISX 거제 Cu2+궤리급흡부동역학、흡부평형등온식화흡부열역학,결과표명,ISX 흡부 Cu2+위리자교환반응,기흡부속솔쾌,부합의이급동역학,속우 Freundlich 흡부,흡부과정위흡열、적증、자발적반응과정。
Insoluble starch xanthate (ISX)was synthesized by using corn starch as raw material,and characterized by FTIR,SEM and XRD.Furthermore,the adsorption mechanism,including adsorption kinetics, equilibrium and thermodynamics of copper ions from aqueous solutions were all investigated.The results indicated the removal mechanism of ISX for Cu(II)was ions exchange,the adsorption kinetics were favorably described by the pseudo - second - order kinetic model and the adsorption isotherms followed well with the Freundlich isotherm model,the thermodynamic study indicated that the adsorption was a spontaneous and endo-thermic process.