Development of Electrospun Membranes Based on PVDF-HFP Modified by Nanosized Zeolite

الموضوعات

علوم تطبيقية وتكنولوجية

الملخص

Current methods to treat wastewater like produced water and refinery effluents before discharging are unable to keep up with the ever increasing stringent regulations of discharge and reuse. Membrane distillation (MD) is an emerging membrane technology that can be used to overcome this challenge. MD is particularly attractive because it can remove oil and salt from such wastewaters in one step, producing freshwater. However, pore clogging and wetting by low surface tension contaminants limit the use of MD for oily wastewater treatment. To overcome this challenge, a dual-layered membrane, consisting of an underwater superoleophobic top layer of electrospun poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) coated with regenerated cellulose (RC) and a hydrophobic bottom layer of electrospun PVDF-HFP was developed before [1]. The membrane was successful in desalinating oily wastewater through direct contact membrane distillation (DCMD). While the membrane maintained complete salt and oil rejection in DCMD, its permeate flux was relatively low. In this work, the performance of the dual-layered membrane in terms of permeate flux was enhanced by incorporating different concentrations of Linde type L (LTL) zeolite nanoparticles into the top membrane layer via cellulose surface coating. The results showed that the MD performance was optimized when 1 wt% of nanoparticles was embedded in the cellulose coating. The composite membrane with 1 wt% zeolite loading maintained a flux 38% higher than that of the dual-layered membrane without zeolite in oily saline water desalination. This is attributed to the increase in top layer porosity from 41.59% to 49.71% induced by the addition of 1 wt% of LTL nanoparticles. The results from this study suggest that the incorporation of LTL zeolite nanoparticles into the cellulose coating can effectively enhance the membrane performance without compromising the oil and salt rejection in DCMD.

روابط وملفات

التعريف والنوع

رقم الوثيقة

f613a8fc-31a1-4b4d-97b4-a2eea3abda64

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

رسائل ماجيستير

نوع الملف

pdf text

أسماء الملفات

2283137_1.pdf

بيانات النشر

ألقاب المؤلفين

[{"name_ar":" Isam Janajreh","title_ar":"اشراف","title_en":"Supervision"},{"name_ar":" Raed Hashaikeh","title_ar":"اشراف","title_en":"Supervision"},{"name_ar":"Faisal Almarzooqi","title_ar":"اشراف","title_en":"Supervision"},{"name_ar":"Georgios Karanikolos","title_ar":"اشراف","title_en":"Supervision"},{"name_ar":"Haya Nassrullah","title_ar":"اعداد","title_en":"Preparation"}]

اللغة

English

المصدر والدورية

اسم المصدر

Development of Electrospun Membranes Based on PVDF-HFP Modified by Nanosized Zeolite

المحتوى والصفحات

عدد الصفحات

0

كلمات الباحثين

Membrane Distillation Underwater Superoleophobicity Nanozeolites Dual-layered

إشراف وإعداد

الإشراف

Isam Janajreh, Raed Hashaikeh, Faisal Almarzooqi, Georgios Karanikolos

الإعداد

Haya Nassrullah

الاقتباسات الببليوغرافية