کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4453924 1620818 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of surfactants on graphene oxide nanoparticles transport in saturated porous media
ترجمه فارسی عنوان
اثرات سورفکتانت ها بر انتقال نانوذرات اکسید گرافین در رسانه های متخلخل اشباع
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست علوم زیست محیطی (عمومی)
چکیده انگلیسی

Transport behaviors of graphene oxide nanoparticles (GONPs) in saturated porous media were examined as a function of the presence and concentration of anionic surfactant (SDBS) and non-ionic surfactant (Triton X-100) under different ionic strength (IS). The results showed that the GONPs were retained obviously in the sand columns at both IS of 50 and 200 mmol/L, and they were more mobile at lower IS. The presence and concentration of surfactants could enhance the GONP transport, particularly as observed at higher IS. It was interesting to see that the GONP transport was surfactant type dependent, and SDBS was more effective to facilitate GONP transport than Triton X-100 in our experimental conditions. The advection–dispersion–retention numerical modeling followed this trend and depicted the difference quantitatively. Derjaguin–Landau–Verwey–Overbeek (DLVO) interaction calculations also were performed to interpret these effects, indicating that secondary minimum deposition was critical in this study.

Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Environmental Sciences - Volume 35, 1 September 2015, Pages 12–19
نویسندگان
, , , , , ,