文献类型：期刊文献

中文题名：膨润土对海水中重油分散途径的影响研究

英文题名：Study on the effect of bentonite on heavy soil dispersion in seawater

作者：陈荔[1];周彦波[1];王肖倩[1];鲁军[1]

机构：[1]华东理工大学资源与环境工程学院,上海200237

年份：2012

卷号：34

期号：12

起止页码：66

中文期刊名：环境污染与防治

外文期刊名：Environmental Pollution & Control

收录：CSTPCD;;北大核心:【北大核心2011】；CSCD:【CSCD_E2011_2012】；

基金：上海市自然科学基金资助项目(No.10ZR1408000);上海市晨光计划资助项目(No.11CG32)

语种：中文

中文关键词：OMA;油泄漏;油分散;改性膨润土

外文关键词：OMA; oil spill; oil dispersion; modified bentonite

摘要：石油泄漏对海洋生态造成极大威胁。通过实验室模拟重油在海水中悬浮与扩散的情况,考察了膨润土在模拟海水中促进油滴分散的作用机制,以及振荡时间、膨润土表面特性和膨润土投加量对重油分散效率的影响。实验结果表明,2种膨润土颗粒均可以通过与重油形成聚结物(OMA)将油分散。改性膨润土(CTAB-B)与重油形成稳定OMA所需的时间远远小于未改性钠基膨润土(Na-B),形成时间分别为40、180min;CTAB-B与重油生成OMA的效率高于Na-B,在低膨润土投加量(为重油质量的10%)条件下,CTAB-B、Na-B与重油形成OMA的效率分别是70%和36%;Na-B参与形成的OMA结构单一,CTAB-B与重油形成多种OMA结构,油滴粒径有所增大,但油滴颗粒在水中的稳定性增强。研究结果对于海洋石油泄露的防治具有一定指导意义。
Oil spill has been seriously threatened ecological environment of marine. Batch laboratory experi-ments were conducted to simulate the suspension and dispersion of heavy oil in seawater, the effects of shaking time, bentonite type and the dosage of bentonite on heavy oil dispersion were investigated. The experiment results con firmed that both modified bentonite （CTAB-B） and original bentonite （Na B） could disperse oil by aggregating with oil and forming oil-mineral-aggregates （OMA）. Adding CTAB-B to the mixture of seawater and oil, OMA was formed in 40 min, which was much shorter than adding Na-B （180 min）. 70% and 36% of oil formed OMA with CTAB-B and Na-B respectively under low dosage of bentonite which was 10% of oil by mass. OMA formed with CTAB-B were more complicated in structure and richer in the type by which oil droplets became more stable in water. These results will help to apply a new solution when oil accidentally spilled into the ocean.