Techno-economic assessment of forward osmosis as a pretreatment process for mitigation of scaling in multi-stage flash seawater desalination process
المؤلف | Hafiz, MhdAmmar |
المؤلف | Alfahel, Radwan |
المؤلف | Altaee, Ali |
المؤلف | Hawari, Alaa H. |
تاريخ الإتاحة | 2023-05-23T09:39:15Z |
تاريخ النشر | 2023 |
اسم المنشور | Separation and Purification Technology |
المصدر | Scopus |
الملخص | Thermal desalination processes suffer from the formation of scalants on the heat exchangers of the evaporator unit which negatively affect the process efficiency. This study evaluated the technical and economic feasibility of a pilot-scale forward osmosis (FO) process for the pretreatment of seawater to remove scaling ions before the multi-stage flash (MSF) process. A commercial hollow fiber FO membrane module was used in the pilot plant. The FO pilot plant used real seawater as feed solution and real MSF brine as draw solution. A maximum recovery rate of 27.7 % was achieved using a pressure gradient of 1.0 bar with the feed solution flowing through the membrane bore side and the draw solution flowing through the shell side with a temperature of 40 °C for both feed and draw streams. The FO membrane showed high rejection for scaling ions, where the rejection rate was almost 99 %, 96 %, and 92 % for sulfate, calcium, and magnesium, respectively. The specific power consumption of the FO process was about 0.01 kWh/m3. It was found that the water production cost for the FO process was almost 0.48 $/m3. The sensitivity analysis shows that the water production cost is highly sensitive to the water flux, especially at the lower range of water flux and high membrane cost. FO pretreatment provides a promising and economical solution for mitigating the scaling issue in MSF desalination plants. |
راعي المشروع | This research is made possible by the NPRP award ( NPRP10-0117-170176 ) from Qatar National Research Fund (QNRF). In addition, the authors wish to thank Qatar National Research Fund for the financial support provided to the co-authors through a graduate sponsorship research award ( GSRA6-1-0509-19021 ) and ( GSRA7-1-0429-20028 ). The authors wish to thank the Central Laboratories Unit (CLU) at Qatar University for the ion chromatography analysis. The statements made herein are solely the responsibility of the authors. |
اللغة | en |
الناشر | Elsevier |
الموضوع | Brine Forward Osmosis Multi-stage flash Scaling Seawater desalination |
النوع | Article |
رقم المجلد | 309 |
تحقق من خيارات الوصول
الملفات في هذه التسجيلة
الملفات | الحجم | الصيغة | العرض |
---|---|---|---|
لا توجد ملفات لها صلة بهذه التسجيلة. |
هذه التسجيلة تظهر في المجموعات التالية
-
الهندسة المدنية والمعمارية [774 items ]