陶瓷膜超滤净化石灰法制糖清汁

doi:10.7506/spkx1002-6630-20180111-145

食品科学 ›› 2019, Vol. 40 ›› Issue (2): 252-258.doi: 10.7506/spkx1002-6630-20180111-145

陶瓷膜超滤净化石灰法制糖清汁

李文1,2，朱瓌之3，漆虹3，曲睿晶1，谢彩锋1,*，雷福厚1,2,*，李凯1,4

（1.广西大学轻工与食品工程学院，广西?南宁 530004；2.广西民族大学化学化工学院，广西林产化学与工程重点实验室，广西?南宁 530008；3.南京工业大学膜科学技术研究所，江苏南京 210009；4.广西蔗糖产业协同创新中心，广西?南宁 530004）

出版日期:2019-01-25 发布日期:2019-01-22
基金资助:
广西科学研究与技术开发计划项目（桂科AB16380005；桂科AB16380011）；广西科技重大专项（桂科AA17204092）

Refining of Defecated Sugarcane Juice Using Ultrafiltration Ceramic Membrane

LI Wen1,2, ZHU Guizhi3, QI Hong3, QU Ruijing1, XIE Caifeng1,*, LEI Fuhou1,2,*, LI Kai1,4

(1. College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China; 2. Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, College of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning 530008, China; 3. Membrane Science and Technology Research Center, Nanjing University of Technology, Nanjing 210009, China; 4. Collaborative Innovation Center of Guangxi Sugarcane Industry, Nanning 530004, China)

Online:2019-01-25 Published:2019-01-22

摘要/Abstract

摘要： 对孔径为0.04?μm的陶瓷超滤膜进一步净化石灰法制糖的清汁进行研究，在跨膜压差0.45～0.50?MPa、膜面流速4.0～4.5?m/s、过滤温度75～97?℃的条件下过滤甘蔗汁30?h，膜渗透通量从350.6?L/（m2·h）降低至160.2?L/（m2·h），平均通量为177.8?L/（m2·h），能满足工业化生产的需求。甘蔗汁经陶瓷膜过滤后品质被进一步提升，简纯度可提高2.01?个单位，色素去除率为20.20%，澄清度从79.18%提升至99.98%。研究膜污染形成发现，陶瓷膜过滤甘蔗汁会在膜表面形成一层污染层，膜污染物的主要成分为有机物（多糖、蛋白质、酯类及酚类等物质），同时还含有少量的Na、Mg、Al、Si、P、Cl、K、Ca及Fe等无机成分。污染膜依次采用工业净水、1%?NaOH-0.5%?NaClO混合溶液、0.5%?HNO3溶液清洗，膜通量恢复率均高于95.5%，重复性较好，是一种有效的膜清洗方法。

关键词: 陶瓷膜, 超滤, 制糖, 石灰法, 清汁

Abstract: This study investigated the application of an ultrafiltration ceramic membrane (0.04 μm) to refine defecated sugarcane juice. The sugarcane juice was ultrafiltrated for 30 h under the following conditions: transmembrane pressure difference 0.45–0.50 MPa, crossflow velocity 4.0–4.5 m/s, and temperature 75–97 ℃. The membrane permeate flux was decreased from 350.6 to 160.2 L/(m2·h) during the ultrafiltration process and the average flux rate was 177.8 L/(m2·h), which could meet the requirement of industrial production. The apparent purity of sugarcane juice was increased by 2.01 units after ultrafiltration, the percentage removal of pigments was 20.20%, and the clarity was elevated from 79.18% to 99.98%. A fouling layer comp was formed on the membrane surface during the ultrafiltration process, which mainly consisted of organic depositions (e.g., polysaccharides, proteins, aliphatics and phenols) as well as lesser amount of inorganic components such as Na, Mg, Al, Si, P, Cl, K, Ca and Fe. A flux recovery rate of higher than 95.5% was obtained with good repeatability when fouled membrane was successively rinsed with clean industrial water, a mixed solution of 1.0% NaOH and 0.5% NaClO, and 0.5% HNO3 solution, suggesting that this cleaning method was feasible.

Key words: ceramic membrane, ultrafiltration, sugar refining, defecation, clarified juice

中图分类号:

TS244.2

李文，朱瓌之，漆虹，曲睿晶，谢彩锋，雷福厚，李凯,. 陶瓷膜超滤净化石灰法制糖清汁[J]. 食品科学, 2019, 40(2): 252-258.

LI Wen, ZHU Guizhi, QI Hong, QU Ruijing, XIE Caifeng, LEI Fuhou,, LI Kai,. Refining of Defecated Sugarcane Juice Using Ultrafiltration Ceramic Membrane[J]. FOOD SCIENCE, 2019, 40(2): 252-258.

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陶瓷膜超滤净化石灰法制糖清汁

Refining of Defecated Sugarcane Juice Using Ultrafiltration Ceramic Membrane

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