Nanofiltration of synthetic and industrial dye baths: Influence of temperature on rejection and membrane fouling
نویسندگان
چکیده مقاله:
Nanofiltration (NF) has become a widely accepted process not only for producing drinking water but also for recovering wastewater in industrial processes or removing pollutants from industrial wastewater effluent. In the textile industry, the treatment of various dye baths with NF at room temperature have already been studied and was found feasible at lab-scale and pilot scale. The aim of this study was to investigate the effect of temperature on permeate quality and membrane fouling in NF of textile effluents using a range of commercial membranes (Desal 5 DK, Desal 5 DL, N30F, NF PES 10) in a temperature range from 20 oC to 70 oC. Synthetic dye baths at different salt and/or dye concentrations and real dye baths were used. The performance of the NF membranes was evaluated by measuring the water flux, salt and color rejection. Na2SO4 rejection of 15% and color rejection of more than 80% were achieved through the experiments at elevated temperature. Permeate quality was satisfactory enough to recycle these effluents in reactive dyeing for water and energy savings. The fouling effect at elevated temperature on NF membrane increases the Na2SO4 and color rejection slightly, but membrane damage was observed for some membranes. There was a correlation between the results of experiments with synthetic solutions and with real wastewater.
منابع مشابه
nanofiltration of synthetic and industrial dye baths: influence of temperature on rejection and membrane fouling
nanofiltration (nf) has become a widely accepted process not only for producing drinking water but also for recovering wastewater in industrial processes or removing pollutants from industrial wastewater effluent. in the textile industry, the treatment of various dye baths with nf at room temperature have already been studied and was found feasible at lab-scale and pilot scale. the aim of this ...
متن کاملInfluence of Operating Variables on Performance of Nanofiltration Membrane for Dye Removal from Synthetic Wastewater Using Response Surface Methodology
The textile industry is a water intensive industry that produces a large amount of highly colored wastewater that must be properly treated before disposal or reuse. In the present study, to verify the possibility of reusing textile wastewater with nanofilteration (NF), an attempt was made to treatment of synthetic reactive dye aqueous solution by commercial nanofiltration membrane. Experiments ...
متن کاملEffects of membrane fouling and scaling on boron rejection by nanofiltration and reverse osmosis membranes
متن کامل
effect of seed priming and irrigation regimes on yield,yield components and quality of safflowers cultivars
این مطالعه در سال 1386-87 در آزمایشگاه و مزرعه پژوهشی دانشگاه صنعتی اصفهان به منظور تعیین مناسب ترین تیمار بذری و ارزیابی اثر پرایمینگ بر روی سه رقم گلرنگ تحت سه رژیم آبیاری انجام گرفت. برخی از مطالعات اثرات سودمند پرایمینگ بذر را بر روی گیاهان مختلف بررسی کرده اند اما در حال حاضر اطلاعات کمی در مورد خصوصیات مربوط به جوانه زنی، مراحل نموی، عملکرد و خصوصیات کمی و کیفی بذور تیمار شده ژنوتیپ های م...
the influence of social and cultural capital on efl students critical thinking skills
the major aim of this study was to investigate the relationship between social and cultural capital and efl students’ critical thinking skills. this study takes this relationship in to account to see if people with different sociocultural status are different regarding their critical thinking skills. to this end, 160 university students majoring in english language and literature, english trans...
15 صفحه اولمنابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ذخیره در منابع من قبلا به منابع من ذحیره شده{@ msg_add @}
عنوان ژورنال
دوره 1 شماره Issue 1
صفحات 34- 40
تاریخ انتشار 2015-04-01
با دنبال کردن یک ژورنال هنگامی که شماره جدید این ژورنال منتشر می شود به شما از طریق ایمیل اطلاع داده می شود.
میزبانی شده توسط پلتفرم ابری doprax.com
copyright © 2015-2023