نوع مقاله : پژوهشی
نویسندگان
1 بابل، دانشگاه صنعتی نوشیروانی بابل، کد پستی 4714871167
2 بابل، دانشگاه علوم پزشکی بابل، کد پستی 47176-47745
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Hypothesis: The water scarcity is one of the greatest challenges of today’s human societies and due to the rapid growth of populations and increasing the urbanization, industrial development, global climate changes and at the same time, the warming of the planet; it has been intensified in recent years. Under these conditions, the water treatment and the water resource management have gained great importance in various industries such as oil and gas, food, power plants, etc Various technologies using heat and membranes are introduced for water treatment and in recent years, the membrane distillation process has been developed due to its advantages compared to the conventional processes (such as high energy efficiency and low operational costs). However, the search for membrane improvement and modification of its properties is still underway. The use of biodegradable polymers is one of the proposed solutions so that this approach can be considered for further optimization to make it economically viable
Methods: Through the application of biodegradable polymer such as poly(lactic acid) membranes were synthesized by phase inversion method at three polymer concentrations of 16%, 17%, and 19%. The membrane characterization tests such as mean pore size, liquid entry pressure, contact angle and porosity were performed Subsequently, the membranes were applied in the membrane distillation process for the treatment of synthetic wastewater with high salt content
Findings: The purification flux (1.46 kg/m²/h of a 17% PLA membrane) and salt rejection (92.7% of a 17% PLA membrane) demonstrated the capability of the PLA membrane to be utilized in the membrane distillation process. In addition, the longterm performance of a 19% PLA membrane was evaluated over 16 h, during which its flux increased from 0.17 kg/m²/h to 0.99 kg/m²/h and its salt rejection declined from 100% to 46.52%.
کلیدواژهها [English]
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