نتایج جستجو برای: pes membranes
تعداد نتایج: 97505 فیلتر نتایج به سال:
A new method for the preparation of gas separation membranes in a one-step procedure is presented, where common, non-volatile solvents can be used in the polymer solution. It concerns contacting of a polymer solution with two successive nonsolvent baths, whereby the first bath initiates the formation of a dense top layer and the second bath gives the actual polymer precipitation. Membranes made...
This paper reports on preparation of polyamide membrane with addition of silver nanoparticles (AgNPs). AgNPs act as antibacterial agents that are less susceptible to membrane’s biofouling by interfacial polymerization (IP) method. AgNPs was synthesized via green route which has been reported previously. Attenuated Total Reflectance-Fourier Transform Infrared Spectroscopy (ATR-FTIR), Field emiss...
asymmetric membranes are widely used in many industrial membrane separation processes. the major advantage of membrane filtration over the conventional process is its ability to remove a wider spectrum of particles without using any chemicals. hollow fiber configuration offer many advantages over flat-sheet or tubular membranes. the spinning process of hollow fiber may look simple, yet it is te...
رنگهای راکتیو جزء رنگهای محلول در آب هستند. مقدار زیادی یون هیدروکسید (OH-) وارد محیط کرده و سبب تغییر رنگ و pH میشوند. این رنگها سبب ایجاد مشکلاتی برای انسان و گیاهان و جانوران ساکن در محیط میشوند. بنابراین حذف رنگهای مذکور از محیط آبی امری ضروری است. در پژوهش حاضر ابتدا نانوصفحات گرافناکساید با استفاده از روش اصلاح شدهی هامر سنتز گردید و گرافن اکساید مغناطیسی با روش سولوترمال تهیه شد...
0014-3057/$ see front matter 2010 Published b doi:10.1016/j.eurpolymj.2010.03.005 * Corresponding author. Tel.: +82 2 958 5299; fax E-mail address: [email protected] (H.-J. Kim). Polymer blending is used to modify or improve the dimensional and thermal stability of any two different polymers or copolymers. In this study, both sulfonated polybenzimidazole homopolymer (MS-p-PBI 100) and sulfonat...
In this study, an ultrasonic irradiation technique was utilized to mitigate the fouling of polyethersulfone (PES) and polyvinylidene fluoride (PVDF) membranes. The use of ultrasound at 20 kHz was applied to a dead-end microfiltration cell in order to mitigate fouling caused by the presence of colloidal bentonite particles. The effect of ultrasonic power and pulse duration on the permeate flux r...
To improve the energy efficiency of membrane distillation (MD), localized heating feed-membrane interface is advantageous relative to bulk feed. This motivated current study, which targeted at developing a simple two-step way fabricating Laser-Induced Graphene (LIG) Janus for electrothermal distillation. Specifically, had an electrically conductive graphene side and polydimethylsiloxane (PDMS) ...
Abstract Background Nanomaterials have emerged as a fascinating class of materials in high demand for variety practical applications. They are classified based on their composition, dimensions, or morphology. For the synthesis nanomaterials, two approaches used: top-down and bottom-up approaches. Main body abstract Nanoscale structures potential to be used production newly developed devices wit...
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