摘要
以碱性木质素(SL)、壳聚糖(CS)、聚乙稀亚胺(PEI)为原料,利用自由基聚合法制备了一种新型的聚乙稀亚胺改性木质素复合壳聚糖气凝胶(QACL),通过扫描电镜、傅里叶变换红外光谱仪以及热重分析仪等手段对QACL吸附剂的形貌、结构及热性能进行表征,研究了反应时间、温度、pH、吸附剂投加量对糖蜜色素吸附效果的影响。结果表明,QACL吸附色素的最优条件为:pH为7,反应温度60℃,反应时间30 min和吸附剂投加量1.1 g/L。此时QACL对糖蜜色素的去除率达94%,吸附容量为128.18 mg/g。
A novel chitosan aerogel(QACL)was prepared by free radical polymerization using alkaline lignin(SL),chitosan(CS)and polyvinyl imide(PEI)as raw materials.The morphology,structure and thermal properties of QACL adsorbent were observed and characterized by scanning electron microscopy,Fourier transform infrared spectrometer and thermogravimetric analyzer.The effects of changing reaction time,temperature,pH and adsorbent dosage on the absorption of molasses pigment were studied.The results showed that the optimal conditions were pH 7,reaction temperature 60℃,reaction time 30 min and adsorbent dosage 1.1 g/L,the removal rate of molasses pigment by QACL reached 94%,and the adsorption capacity was 128.18 mg/g.
作者
邓立高
黄小芸
黄思豪
邓丕硕
蓝兆林
王朝阳
DENG Ligao;HUANG Xiaoyun;HUANG Sihao;DENG Pishuo;LAN Zhaolin;WANG Zhaoyang(School of Light Industry&Food Engineering,Guangxi University,Nanning 530004,China)
出处
《应用化工》
CAS
CSCD
北大核心
2024年第6期1301-1304,共4页
Applied Chemical Industry
基金
广西自然科学基金(2022GXNSFAA035578)
广西大学大学生创新创业训练计划项目(S202210593156)。
关键词
糖蜜
色素
澄清脱色
吸附剂
molasses
pigment
clarification and decolorization
adsorbent
