一种由阴离子表面活性剂凝胶化生成的新型壳聚糖水凝胶吸附剂。
A new type of chitosan hydrogel sorbent generated by anionic surfactant gelation.
机构信息
Department of Chemical Engineering, Hanbat National University, San 16-1, Deokmyeong-Dong, Yuseong-Gu, Daejeon 305-719, Republic of Korea.
出版信息
Bioresour Technol. 2010 Jun;101(11):3853-8. doi: 10.1016/j.biortech.2009.12.089. Epub 2010 Feb 2.
A new type of chitosan hydrogel beads (CSB) with a core-shell membrane structure was generated by sodium dodecyl sulfate (SDS) gelation process. CSB exhibited higher mechanical strength and acid stability than chitosan hydrogel beads (CB) formed by alkali gelation. The effect of SDS concentration variation during gelation on the adsorption capacity of CSB for congo red (CR) as a model anionic dye showed that CSB formed by 4gl(-1) SDS gelation had the highest adsorption capacity. The maximum adsorption capacity of CSB (208.3mgg(-1)) obtained from the Sips model was found slightly higher than that of CB (200.0mgg(-1)). Membrane materials of CSB obtained after squeezing core water from the beads showed approximately 25 times higher volumetric adsorption capacity than CB.
一种新型壳聚糖水凝胶珠（CSB）具有核壳膜结构，由十二烷基硫酸钠（SDS）凝胶过程产生。CSB 表现出比由碱凝胶化形成的壳聚糖水凝胶珠（CB）更高的机械强度和酸稳定性。在凝胶化过程中 SDS 浓度变化对 CSB 对刚果红（CR）作为模型阴离子染料的吸附能力的影响表明，由 4gl(-1) SDS 凝胶化形成的 CSB 具有最高的吸附能力。从 Sips 模型获得的 CSB（208.3mgg(-1)）的最大吸附能力略高于 CB（200.0mgg(-1)）。从珠粒中挤出核心水后得到的 CSB 的膜材料的体积吸附能力比 CB 高约 25 倍。
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