[صفحه اصلی ]   [Archive]  
:: صفحه اصلي :: درباره نشريه :: آخرين شماره :: تمام شماره‌ها :: جستجو :: ثبت نام :: ارسال مقاله :: تماس با ما ::
:: دوره 8، شماره 1 - ( 11-1399 ) ::
جلد 8 شماره 1 صفحات 25-32 برگشت به فهرست نسخه ها
Azo dye removal via surfactant-assisted polyvinylidene fluoride membrane
چکیده:   (586 مشاهده)
Background: Recently, concerns have been raised regarding the environmental and public health safety of azo dyes, the most widely used synthetic dyes. The membrane technique has been introduced as one of the efficient methods for dye removal treatments. Polyvinylidene fluoride (PVDF) membrane manipulated by surfactants was studied for removal of the azo dye, carmoisine.
Methods: PVDF membrane was prepared via non-solvent-induced phase separation (NIPS) and used to remove the azo dye, carmoisine. Three nonionic surfactants including Tween 20, Tween 60, and Tween 80 were used individually as additives in casting solutions to improve PVDF membrane properties.
Results: Fourier-transform infrared spectroscopy (FTIR) demonstrated the presence of functional groups of carbonyl (C=O) and hydroxyl (OH), assigned to Tween molecules, in the membrane chemical structure. All Tween species caused a decrease in the surface hydrophobicity of PVDF membranes illustrated by the reduced contact angles. Each Tween at a 2% concentration in the dope solution led to an increase in the pore-size of PVDF membranes, which was estimated by scanning electron microscopy (SEM). However, this impact was reversed at Tween concentrations of 4%. Membranes were assessed for dye removal efficiency and permeate flux in a cross-flow system. Permeability of PVDF membranes improved (~78%) with adding Tween 80 at a concentration of 2%. Tween 60 at a 2% concentration
resulted in a ~45% increase in dye removal efficiency of PVDF membranes. And, atomic force microscopy (AFM) showed that Tween 60 increased membrane surface roughness.
Conclusion: Surfactant-mediated changes in the surface properties of PVDF membrane improved dye removal efficacy.
متن کامل [PDF 998 kb]   (564 دریافت)    
نوع مطالعه: مقاله اصیل | موضوع مقاله: تخصصي
دریافت: 1399/11/27 | پذیرش: 1399/11/10 | انتشار: 1399/12/25
ارسال نظر درباره این مقاله
نام کاربری یا پست الکترونیک شما:

CAPTCHA



XML   English Abstract   Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Darbandi F, Mousavi A, Bagheri Lotfabad T, Heydarinasab A, Yaghmaei S. Azo dye removal via surfactant-assisted polyvinylidene fluoride membrane. Environ. health eng. manag.. 2021; 8 (1) :25-32
URL: http://ehemj.com/article-1-707-fa.html

Azo dye removal via surfactant-assisted polyvinylidene fluoride membrane. مجله مدیریت و مهندسی بهداشت محیط. 1399; 8 (1) :25-32

URL: http://ehemj.com/article-1-707-fa.html



بازنشر اطلاعات
Creative Commons License این مقاله تحت شرایط Creative Commons Attribution-NonCommercial 4.0 International License قابل بازنشر است.
دوره 8، شماره 1 - ( 11-1399 ) برگشت به فهرست نسخه ها
مجله مدیریت و مهندسی بهداشت محیط Environmental Health Engineering And Management Journal
Persian site map - English site map - Created in 0.04 seconds with 30 queries by YEKTAWEB 4341