FATE OF REVERSE OSMOSIS (RO) MEMBRANES DURING OXIDATION BY DISINFECTANTS USED IN WATER TREATMENT: IMPACT ON MEMBRANE STRUCTURE AND PERFORMANCES

الموضوعات

علوم بيئية

الملخص

Providing pretreatment prior RO filtration is essential to avoid biofouling and subsequent loss of membrane performances. Chlorine is known to degrade polymericmembrane, improving or reducing membrane efficiency depending on oxidationconditions. This study aimed to assess the impact of alternative disinfectant, NH2Cl,as well as secondary oxidants formed during chloramination of seawater, e.g. HOBr,HOI, or used in water treatment e.g. ClO2, O3, on membrane structure andperformances. Permeability, total and specific rejection (Cl-, SO42-, Br-, Boron), FTIRprofile, elemental composition were analyzed. Results showed that each oxidantseems to react differently with the membrane. HOCl, HOBr, ClO2 and O3 improvedmembrane permeability but decreased rejection in different extent. In comparison, chloramines resulted in identical trends but oxidized membrane very slowly. On the contrary, iodine improved membrane rejection e.g. boron, but decreased permeability.Reaction conducted with chlorine, bromine, iodine and chloramines resulted in theincorporation of halogen in the membrane structure. All oxidant except iodine wereable to break amide bonds of the membrane structure in our condition. In addition,chloramine seemed to react with membrane differently, involving a potential additionof nitrogen. Chloramination of seawater amplified membrane performances evolutionsdue to generation of bromochloramine. Moreover, chloramines reacted both withNOM and membrane during oxidation in natural seawater, leading to additionalrejection drop.

روابط وملفات

الوثيقة في المستودع الخارجي عرض في AskZad

التعريف والنوع

رقم الوثيقة: 05d82c6f-8a91-49aa-b7f3-527cb46531f4
رقم العقد: 0
نوع الوسائط: Crawler
نوع المحتوى: الرسائل العلمية
صيغة المصدر: رسائل دكتوراة
نوع الملف: pdf image
أسماء الملفات: 05d82c6f-8a91-49aa-b7f3-527cb46531f4_1.pdf

بيانات النشر

ألقاب المؤلفين: [{"name_ar":"Jean-Philippe Croue","title_ar":"اشراف","title_en":"Supervision"},{"name_ar":"Thomas Maugin","title_ar":"اعداد","title_en":"Preparation"}]
اللغة: English

المصدر والدورية

اسم المصدر: FATE OF REVERSE OSMOSIS (RO) MEMBRANES DURING OXIDATION BY DISINFECTANTS USED IN WATER TREATMENT: IMPACT ON MEMBRANE STRUCTURE AND PERFORMANCES

المحتوى والصفحات

عدد الصفحات: 0
كلمات الباحثين: Membrane Oxidant Polyamide Ageing Monochloramine

إشراف وإعداد

الإشراف: Jean-Philippe Croue
الإعداد: Thomas Maugin

الاقتباسات الببليوغرافية

APA

Jean-Philippe Croue و Thomas Maugin. (2013). FATE OF REVERSE OSMOSIS (RO) MEMBRANES DURING OXIDATION BY DISINFECTANTS USED IN WATER TREATMENT: IMPACT ON MEMBRANE STRUCTURE AND PERFORMANCES. أطروحة(رسائل دكتوراة). جامعة الملك عبدالله للعلوم والتقنية. السعودية.

MLA

Jean-Philippe Croue و Thomas Maugin. FATE OF REVERSE OSMOSIS (RO) MEMBRANES DURING OXIDATION BY DISINFECTANTS USED IN WATER TREATMENT: IMPACT ON MEMBRANE STRUCTURE AND PERFORMANCES. 2013. جامعة الملك عبدالله للعلوم والتقنية، رسائل دكتوراة.