https://scholars.lib.ntu.edu.tw/handle/123456789/407882
標題: | The role of ionic surfactants in compression dewatering of alum sludge | 作者: | Chu C.P. Lee D.J. Huang C. |
關鍵字: | Consolidation;Ionic surfactants;Sludge;Theological model | 公開日期: | 1998 | 卷: | 206 | 期: | 1 | 起(迄)頁: | 181-188 | 來源出版物: | Journal of Colloid and Interface Science | 摘要: | This work has experimentally investigated the characteristics of filtration followed by consolidation dewatering of an alum sludge, with especial attention to the effects of adding ionic surfactants (SDS or CTAB). The filtration and consolidation stages at a pressure of 3000 psi were discussed separately. The efficiency of filtration is enhanced in the presence of surfactant molecules; however, the cationic surfactant (CTAB) raises the consolidation rate while the anionic surfactant (SDS) retards it. A newly proposed theological model has been employed for interpreting the consolidation data. CTAB would not alter markedly the moisture distribution in the sludge, but SDS does increase markedly the amount of the tightly bound moisture by diminishing the portion occupied by pore water. The possible role of surfactants in the sludge flocs is considered. Both surfactants can be used as conditioning aids during the filtration stage. However, the applications of SDS to the consolidation stage are not encouraged. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/407882 | ISSN: | 00219797 | DOI: | 10.1006/jcis.1998.5701 | SDG/關鍵字: | aluminum potassium sulfate; anionic surfactant; ionic surfactant; article; electricity; filtration; mathematical model; priority journal; sludge dewatering; waste water management |
顯示於: | 化學工程學系 |
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