عوامل موثر بر کارایی غشاهای استات سلولز در تصفیه آب
الموضوعات :
عباس شيخ
1
(تربیت مدرس)
الکلمات المفتاحية: رسوب با غوطه وري تراوايي گرفتگي,
ملخص المقالة :
با توجه به کاربرد روزافزون فرآيندهاي غشايي در اين مقاله به غشاهاي استات سلولز در تصفيه آب پرداخته شده است. در اين راستا ابتدا روش هاي ساخت غشا مرور شده و بر روش پر استفاده جدايش فازي تمرکز شده است. از آنجا که استات سلولز که پايه طبيعي دارد و از نخستين غشاهاي تجاري است داراي کاستي هايي است، در ادامه تلاش های پژوهشگران براي بهبود ويژگي هايي چون تراوايي، ميزان پس زني نمک و پروتئين، گرفتگي، خواص مکانيکي و گرمايي با وارد کردن افزودني، نانو ذره يا آميخته کاري، بررسي شده اند. همچنين به اثر ح الل، ضدحلال، غلظت پليمر و دماي حمام انعقاد بر کارايي اين غشاها پرداخته شده است.
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