| 叶霞，刘长霞，李煦，张云江，李世朝，毛宁.壳聚糖醋酸盐及其月桂酸盐复配溶液的
油脂吸附性能研究[J].中国油脂,2026,51(1):.[YE Xia, LIU Changxia,LI Xu, ZHANG Yunjiang, LI Shizhao, MAO Ning.Oil adsorption capacity of chitosan acetate and its laurate compound solution[J].China Oils and Fats,2026,51(1):.] |
| 壳聚糖醋酸盐及其月桂酸盐复配溶液的
油脂吸附性能研究 |
| Oil adsorption capacity of chitosan acetate and its laurate compound solution |
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| DOI：10.19902/j.cnki.zgyz.1003-7969.240444 |
| 中文关键词: 壳聚糖醋酸盐 壳聚糖月桂酸盐 复配 油脂吸附 |
| 英文关键词:chitosan acetate chitosan laurate compounding oil-adsorption |
| 基金项目:河北省自然科学基金项目（B2019110020）；河北省高等学校科学技术研究项目（ZC2022044）；沧州师范学院科研创新团队资助（cxtdl1901） |
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| 中文摘要: |
| 为开发绿色、环保、高效的油脂吸附剂，采用一锅法制备了水溶性壳聚糖醋酸盐（Cs-Ac）与疏水性壳聚糖月桂酸盐（Cs-La）复配溶液（Cs-Ac-La）。对Cs-Ac-La进行了红外光谱表征；以大豆油为吸附对象，探究了Cs-Ac-La中壳聚糖的—NH+3与月桂酸钠的—COO-的物质的量比、吸附温度、介质pH对油脂吸附性能的影响，通过正交实验确定了Cs-Ac-La吸附油脂的最佳条件，并对吸附后的油脂进行了脱附实验。另外，比较了Cs-Ac-La对不同油的吸附能力。结果表明：红外光谱表征结果说明将1 g Cs-Ac溶于100 mL蒸馏水中得到Cs-Ac水溶液（pH≈54），然后直接滴入适量的月桂酸钠（La）溶液，采用一锅法成功制备了Cs-Ac-La；Cs-Ac-La 吸附油脂的最优条件为—NH+3与—COO-物质的量比1∶ 0.111 0、吸附温度20 ℃、介质pH 5～6，在此条件下油脂吸附量为200.97 g/g，比Cs-Ac的油脂吸附量提高了32.25 g/g，是Cs-La油脂吸附量的近9倍；在pH 3~10范围内，Cs-Ac-La的油脂脱附率低于Cs-Ac的，Cs-Ac的黏滞包裹和Cs-La的疏水束缚作用的协同效应提高了Cs-Ac-La的油脂吸附性能和保持性能；Cs-Ac-La对大豆油和葵花仁油的油脂吸附量远高于汽油和煤油。综上，Cs-Ac-La制备方法简单、快速，绿色环保，现用现配，可应用于含油废水处理和降脂保健品开发等领域。 |
| 英文摘要: |
| In order to develop green, environmentally friendly, and efficient oil adsorbents, the compound solution (Cs-Ac-La) of water-soluble chitosan acetate (Cs-Ac) and hydrophobic chitosan laurate (Cs-La) was prepared by the one-pot method. The Cs-Ac-La was characterized by infrared spectroscopy. Using soybean oil as the adsorption target, the effects of the molar ratio of free amino group of chitosan to carboxyl group of sodium laurate (n(—NH+3)∶ n(—COO-)), adsorption temperature and medium pH on the oil-binding capacity (OBC) of Cs-Ac-La were investigated. The optimal conditions for Cs-Ac-La adsorption of oil were determined through orthogonal experiment, and desorption experiments were conducted on the adsorbed oil. In addition, the adsorption capacity of Cs-Ac-La for different oils was compared. The results showed that appropriate amount of sodium laurate was directly dropped into Cs-Ac aqueous solution (1 g Cs-Ac dissolved in 100 mL distilled water, pH≈5.4), which got the Cs-Ac-La. The OBC of Cs-Ac-La was 200.97 g/g, which was 32.25 g/g higher than that of Cs-As and nearly 9 times that of Cs-La under the optimal conditions of n(—NH+3)∶ n(—COO-) 1∶ 0.111 0, adsorption temperature 20 ℃ and medium pH 5-6. The oil desorption experiments showed that the oil desorption rate of Cs-Ac-La was lower than that of Cs-Ac in range of pH 3-10. Because of the synergy effect between the adhesion and encapsulation of Cs-Ac and hydrophobic interaction of Cs-La, the oil adsorption and retention capacities of Cs-Ac-La were improved. The OBC of Cs-Ac-La on soybean oil and sunflower kernel oil was much higher than that of gasoline and kerosene. In conclusion, the preparation of Cs-Ac-La is simple, green, environmental, and convenient for real-time preparation. The Cs-Ac-La shows promising potential for application in the treatment of oil-containing waste water and the development of lipid-lowering dietary supplements. |
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