通过SA/SiO2微球探测相对临界微粒度的度的阴离子表面活性剂吸附效率
Zhiying Li1, Lei Zhao2, Qing Ao2
1Key Laboratory of Biotechnology and Bioengineering of State Ethnic Affairs Commission, Biomedical Research Center, Engineering Research Center of Key Technology and Industrialization of Cell-based Vaccine, Ministry of Education, Gan-su Tech Innovation Center of Animal, China-Malaysia National Joint Laboratory, Northwest Minzu University, Lanzhou, Gansu, 730030, China; School of Chemical Engineering, Northwest Minzu University, Lanzhou, Gansu, 730124, China.
Journal of environmental management
|August 4, 2024
概括
在SA/SiO2微球上的阴离子表面活性剂吸附受到了临界微粒度 (CMC) 的影响. 较低的CMC值与较高的吸附相关,有助于控制环境分散.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 表面化学 表面化学
背景情况:
- 阴离子表面活性剂需要有效的环境分散策略.
- 关于关键菌度 (CMC) 的阴离子表面活性剂吸附存在有限的研究.
研究的目的:
- 为了研究CMC对阴离子表面活性剂吸附在酸盐/ (SA/SiO2) 微球上的CMC的影响.
- 在各种条件下阐明相对于CMC的吸附机制.
主要方法:
- 使用 cetyltrimethylammonium 化物 (CTAB) 和 octadecyl trimethylammonium 化物 (OTAB) 作为模型阴离子表面活性剂.
- 在不同的表面活性剂度,pH值,温度和吸附时间下检查了吸附行为.
- 相对于CMC,确定吸附能力 (qt).
主要成果:
- 吸附能力 (qt) 随着CMC值在相同度下降而增加.
- 在CMC上方观察到更高的吸附量 (CTAB为583.2 mg/g,OTAB为678.0 mg/g).
- 在CMC以下观察到较低的吸附量 (CTAB为123.2 mg/g,OTAB为138.7 mg/g).
- 与OTAB相比,CTAB的CMC较低,这证实了CMC与吸附之间的关系.
结论:
- 阴离子表面活性剂对SA/SiO2微球的吸附受到其关键微粒度的显著影响.
- 了解CMC为开发有效的吸附方法提供了基础,以去除阴离子表面活性剂.
- 这些发现支持制定减轻环境表面活性剂分散的策略.
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