بررسی مدلهای همدمای جذب بر قابلیت حذف ناخالصی های ملاس رقیق چغندرقند با استفاده از کربن فعال پودری

نویسندگان
بیوک آقا فرمانی 1
صمد بدبدک 1
سعید داداشی 2
1 استادیار گروه علوم و صنایع غذایی، دانشکده کشاورزی و منابع طبیعی اهر، دانشگاه تبریز
2 استادیار گروه علوم وصنایع غذایی، دانشکده کشاورزی، دانشگاه تبریز، تبریز، ایران
10.52547/fsct.17.107.107
چکیده
کربن فعال پودری ظرفیت جذب بالایی داشته و دارای سطح غیرقطبی قابل توجهی است. نیروهای سطح (واندروالس و لاندن) جذب قوی­تری را بین سطح کربن و ناخالصی­ها نسبت به ملکول­های موجود در ملاس رقیق به وجود می­آورد. هدف این پژوهش حذف انواع ناخالصی­ها مانند ترکیبات رنگی، عوامل کدورت­زا، ترکیبات فنولی، آنتوسیانین و پروتئین­ ملاس رقیق چغندرقند (ملاس رقیق چغندرقند 35%) با استفاده از کربن فعال پودری در چهار سطح (61/0، 78/0، 13/1 و g 83/1بر g 100 ملاس رقیق) در pH 5/4 بود. برای پیش بینی کاهش ناخالصی­های ملاس رقیق چغندر قند، مدل­های همدمایی جذب فروندلیچ و لانگمویر مورد بررسی قرار گرفت. نتایج بررسی همدما­های تعادلی جذب بر اساس ضریب تبیین و ظرفیت جذب نشان داد که جذب ناخالصی­های مانند ترکیبات رنگی (9605/0 R2= و ظرفیت جذب 0794/5)، ترکیبات فنولی (7605/0 R2= و ظرفیت جذب 9755/0) و پروتئین (9679/0 R2= و ظرفیت جذب 9314/1) از مدل فروندلیچ پیروی کرد. عوامل کدورت­زا و ترکیبات آنتوسیانینی از هیچ کدام از مدل­های بررسی شده تبعیت نکرد.
کلیدواژه‌ها
ملاس رقیق چغندر قند
همدمایی جذب
کربن فعال پودری
ناخالصی‌

موضوعات

عنوان مقاله English

Investigation of sorption isotherm models on remove ability sugar beet dilute molasses impurities using powdered activated carbon

نویسندگان English

Boukaga Farmani 1
Samad Bodbodak 1
Saeed Dadashi 2
1 Assistant Professor of Department of Food Science and Technology, Ahar Faculty of Agriculture and Natural Resources, University of Tabriz
2 University of Tabriz
چکیده English

Powdered activated carbon has high adsorption capacity with the remarkable nonpolar surface. The surface forces (van der Waal’s and London) create a stronger attraction between the carbon surface and impurities in comparison to present molecules in dilute molasses. The aim of the study was to adsorb types of impurities such as colorants, turbidity agents, phenolic compounds, anthocyanin and protein of dilute molasses (35% sugar beet dilute molasses) using powdered activated carbon at 4 levels (0.61, 0.78, 1.13, and 1.83 g 100g-1 dilute molasses) at pH 4.5. Further, Freundlich and Longmuir sorption isotherm models were evaluated to predict reduction of impurities. The results of equilibrium isotherms based on the coefficient of determination and adsorption capacity exhibited that the adsorption of impurities such as colorants (R2 = 0.9605 and Kf = 5.0794), phenolic compounds (R2 = 0.7605 and Kf = 0.9755) and protein (R2 = 0.9679 and Kf = 1.9314) didn’t follow from Freundlich model. Turbidity agents and anthocyanin didn’t follow any of the studied models.

کلیدواژه‌ها English

Sugar beet dilute molasses
Sorption isotherm
Powdered activated carbon
Impurity
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