使用阳离子聚合物/表面活性剂改性二氧化硅去除水中的浮油

IF 2.3 Q2 Environmental Science Journal of Water Reuse and Desalination Pub Date : 2021-09-13 DOI:10.2166/wrd.2021.065
Anucha Ruksanti, Sorapong Janhom
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引用次数: 0

摘要

研究了三种阳离子聚合物和一种阳离子表面活性剂改性二氧化硅颗粒的吸油效率。采用低分子量聚乙烯亚胺(LPEI)、高分子量聚乙烯亚胺(HPEI)、聚二烯基二甲基氯化铵(PDM)和十六烷基三甲基溴化铵(CTAB)对二氧化硅颗粒进行改性,并比较了它们的除油性能。利用扫描电镜和zeta电位测量分析了未改性和改性二氧化硅颗粒的表面特性。研究了改性二氧化硅颗粒在不同粒径、油浓度、聚合物/表面活性剂浓度和pH等参数下对机油和棕榈油的吸附。结果表明,与未改性二氧化硅颗粒相比,改性二氧化硅颗粒的吸油能力提高了约10-20倍,这取决于二氧化硅颗粒的粒径、pH和所使用的聚合物/表面活性剂类型。lpei -二氧化硅、hpei -二氧化硅、pdm -二氧化硅、ctab -二氧化硅和未改性二氧化硅对棕榈油的最高吸附值分别为2.40、2.10、1.95、1.50和0.15 g/g。此外,改性二氧化硅颗粒的吸油率提高了约30-50%,对于最小尺寸的二氧化硅颗粒。
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Removing free-floating oil from water using cationic polymers/surfactant-modified silica
The purpose of this work was to evaluate the efficiency of oil sorption of silica particles modified by three different types of cationic polymers and a cationic surfactant. Low-molecular-weight polyethyleneimine (LPEI), high-molecular-weight polyethyleneimine (HPEI), polydiallyldimethylammonium chloride (PDM), and cetyltrimethylammonium bromide (CTAB) were used to modify the silica particles and then compared their performances for oil removal. The scanning electron microscope and zeta potential measurements were used to analyze the surface characteristics of unmodified and modified silica particles. Adsorptions of motor oil and palm oil on the modified silica particles have been investigated under various parameters such as the silica particle size, the oil concentration, the polymer/surfactant concentrations, and the pH. The results have shown that the modified silica particles enhanced the oil sorption ability by approximately 10–20 times depending on the size of silica particles, pH, and the type of polymer/surfactant used when compared with the unmodified silica particles. The highest palm oil adsorption values of LPEI-silica, HPEI-silica, PDM-silica, CTAB-silica, and unmodified silica were 2.40, 2.10, 1.95, 1.50, and 0.15 g/gsilica, respectively. Moreover, the oil sorption of the modified silica particles was increased by approximately 30–50% for the smallest-sized silica particles.
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来源期刊
Journal of Water Reuse and Desalination
Journal of Water Reuse and Desalination ENGINEERING, ENVIRONMENTAL-WATER RESOURCES
CiteScore
4.30
自引率
0.00%
发文量
23
审稿时长
16 weeks
期刊介绍: Journal of Water Reuse and Desalination publishes refereed review articles, theoretical and experimental research papers, new findings and issues of unplanned and planned reuse. The journal welcomes contributions from developing and developed countries.
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