化工进展
化工進展
화공진전
CHEMICAL INDUSTRY AND ENGINEERING PROGRESS
2015年
5期
1377-1383,1388
,共8页
李庭%周成显怡%谢通慧%刘文彬
李庭%週成顯怡%謝通慧%劉文彬
리정%주성현이%사통혜%류문빈
大分子多糖%触须式%阴离子交换%制备%吸附
大分子多糖%觸鬚式%陰離子交換%製備%吸附
대분자다당%촉수식%음리자교환%제비%흡부
macromolecular polysaccharide%tentacle-type%anion exchange%preparation%adsorption
以不同的大分子多糖为骨架材料,通过三步反应以触须式引入季铵基团,从而制得4种具有高通量的强碱性阴离子交换树脂:淀粉基树脂、微晶纤维素基树脂、纤维素微球基树脂及琼脂糖微球基树脂。研究树脂对曙红Y的吸附,探讨了时间、溶液pH值和染料初始浓度对染料去除率的影响。结果表明,4种树脂在pH值为1~12范围内对染料的去除效果稳定;5min内4种树脂基本都达到了吸附平衡,其中琼脂糖微球基树脂按1g/L投放时,在2min内即可将200mg/L的曙红Y完全去除;通过拟合得知,4种树脂的吸附动力学符合拟一级动力学方程,等温线符合Freundlich等温线方程。这4种树脂尤其是琼脂糖微球基树脂在吸附速率及吸附量上均具有较大优势,但4种树脂的原料成本不一,可根据需求选用不同的树脂。
以不同的大分子多糖為骨架材料,通過三步反應以觸鬚式引入季銨基糰,從而製得4種具有高通量的彊堿性陰離子交換樹脂:澱粉基樹脂、微晶纖維素基樹脂、纖維素微毬基樹脂及瓊脂糖微毬基樹脂。研究樹脂對曙紅Y的吸附,探討瞭時間、溶液pH值和染料初始濃度對染料去除率的影響。結果錶明,4種樹脂在pH值為1~12範圍內對染料的去除效果穩定;5min內4種樹脂基本都達到瞭吸附平衡,其中瓊脂糖微毬基樹脂按1g/L投放時,在2min內即可將200mg/L的曙紅Y完全去除;通過擬閤得知,4種樹脂的吸附動力學符閤擬一級動力學方程,等溫線符閤Freundlich等溫線方程。這4種樹脂尤其是瓊脂糖微毬基樹脂在吸附速率及吸附量上均具有較大優勢,但4種樹脂的原料成本不一,可根據需求選用不同的樹脂。
이불동적대분자다당위골가재료,통과삼보반응이촉수식인입계안기단,종이제득4충구유고통량적강감성음리자교환수지:정분기수지、미정섬유소기수지、섬유소미구기수지급경지당미구기수지。연구수지대서홍Y적흡부,탐토료시간、용액pH치화염료초시농도대염료거제솔적영향。결과표명,4충수지재pH치위1~12범위내대염료적거제효과은정;5min내4충수지기본도체도료흡부평형,기중경지당미구기수지안1g/L투방시,재2min내즉가장200mg/L적서홍Y완전거제;통과의합득지,4충수지적흡부동역학부합의일급동역학방정,등온선부합Freundlich등온선방정。저4충수지우기시경지당미구기수지재흡부속솔급흡부량상균구유교대우세,단4충수지적원료성본불일,가근거수구선용불동적수지。
With different macromolecular polysaccharide as framework materials,four high-capacity strong base anion exchange resins were prepared by the introduction of quaternary ammonium groups in tentacle-type by three chemical reactions. The resins were applied to remove Eosin Y,and the effects of adsorption time,pH and dye concentration on the removal were also studied. It indicated that all resins could function well in the pH range of 1 to 12. Four resins reached equilibrium in 5 min,and agarose beads resin can completely remove 200 mg/L Eosin Y in 2 min at 1 g/L feeding rate. Fitting the data into kinetic models and isotherm gave the conclusion that the adsorption behavior matched better with pseudo-first-order kinetic and Freundlich isotherm. The adsorption rate and adsorption capacity of four resins,especially agarose beads resin,have a greater advantage. It can be selected according to the needs,because the costs of raw materials in four resins are different.