Enhancement of oxygen gas-liquid mass transfer with colloidal gas aphron dispersions
文献类型：期刊论文
| 作者 | Dai, YJ; Deng, T; Wang, J; Xu, K |
| 刊名 | COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
 |
| 出版日期 | 2004-06-15 |
| 卷号 | 240期号:1-3页码:165-171 |
| 关键词 | gas-liquid mass transfer oxygen colloidal gas aphron surfactants stiring |
| ISSN号 | 0927-7757 |
| 其他题名 | Colloid Surf. A-Physicochem. Eng. Asp. |
| 中文摘要 | In this work, an attempt was made to enhance gas-liquid mass transfer of oxygen with the aid of colloidal gas aphron (CGA) dispersion. The gas-liquid volume mass transfer coefficients (k(L)a) of oxygen in CGA dispersions were measured and related to stirring velocity, type and concentration of surfactants, and temperature. Four surfactants, sodium dodecyl sulfate (SDS), hexadecyltrimethyl ammonium chloride (HTAC), nonylphenol ethoxylate (NP-10), and potassium mono lauryl phosphate (MAPK), were examined in forming CGAs and thereby affecting the mass transfer of oxygen in the dispersions. It was found that effects of surfactants on the oxygen gas-liquid mass transfer were type-dependent. As concentrations rose, the k(L)a of oxygen increased evidently for SDS and an enhancement of k(L)a by a factor of three was observed at the concentration of 2.75 g/L. However the k(L)a decreased for MAPK. Nonylphenol ethoxylate was found to have little effect on k(L)a and HTAC showed mixed behavior. In SDS dispersion, it was found that the mass transfer reached a maximum value at a stirring velocity of 8000 r/min, but further benefit was not observed afterwards. With the increase of temperature, the mass transfer of oxygen was intensified but no much benefit was observed above 308 K. Published by Elsevier B.V. |
| 英文摘要 | In this work, an attempt was made to enhance gas-liquid mass transfer of oxygen with the aid of colloidal gas aphron (CGA) dispersion. The gas-liquid volume mass transfer coefficients (k(L)a) of oxygen in CGA dispersions were measured and related to stirring velocity, type and concentration of surfactants, and temperature. Four surfactants, sodium dodecyl sulfate (SDS), hexadecyltrimethyl ammonium chloride (HTAC), nonylphenol ethoxylate (NP-10), and potassium mono lauryl phosphate (MAPK), were examined in forming CGAs and thereby affecting the mass transfer of oxygen in the dispersions. It was found that effects of surfactants on the oxygen gas-liquid mass transfer were type-dependent. As concentrations rose, the k(L)a of oxygen increased evidently for SDS and an enhancement of k(L)a by a factor of three was observed at the concentration of 2.75 g/L. However the k(L)a decreased for MAPK. Nonylphenol ethoxylate was found to have little effect on k(L)a and HTAC showed mixed behavior. In SDS dispersion, it was found that the mass transfer reached a maximum value at a stirring velocity of 8000 r/min, but further benefit was not observed afterwards. With the increase of temperature, the mass transfer of oxygen was intensified but no much benefit was observed above 308 K. Published by Elsevier B.V. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Chemistry, Physical |
| 研究领域[WOS] | Chemistry |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000222519100020 |
| 公开日期 | 2013-11-05 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/4928]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | Chinese Acad Sci, Inst Proc Engn, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Dai, YJ,Deng, T,Wang, J,et al. Enhancement of oxygen gas-liquid mass transfer with colloidal gas aphron dispersions[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2004,240(1-3):165-171. |
| APA | Dai, YJ,Deng, T,Wang, J,&Xu, K.(2004).Enhancement of oxygen gas-liquid mass transfer with colloidal gas aphron dispersions.COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,240(1-3),165-171. |
| MLA | Dai, YJ,et al."Enhancement of oxygen gas-liquid mass transfer with colloidal gas aphron dispersions".COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 240.1-3(2004):165-171. |
入库方式： OAI收割
来源：过程工程研究所
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