کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
679947 1459959 2015 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Defatted algal biomass as a non-conventional low-cost adsorbent: Surface characterization and methylene blue adsorption characteristics
ترجمه فارسی عنوان
زیست توده جلبکی به عنوان یک جاذب ارزان قیمت غیر متعارف مضر است: خصوصیات سطحی و جذب متیلن آبی
کلمات کلیدی
بیوماس جلبک ایزوترم جذب لانگمیر و فروندلیچ، متیلن آبی، سطح خاص، جنبش
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
چکیده انگلیسی


• Utilization of defatted algal biomass (DAB) as an adsorbent was studied.
• Maximum adsorption capacity of DAB was found to be 7.73 mg g−1.
• Specific surface area of DAB was estimated to be 18.94 m2 g−1.

The present study investigates the use of defatted algal biomass (DAB) as a non-conventional low cost adsorbent. The maximum adsorption capacity of biomass (raw, defatted and sulfuric acid pretreated DAB) was determined by liquid phase adsorption studies in batch mode for the removal of methylene blue present at various concentrations (1, 2, 3, 4, and 5 mg L−1) from aqueous solutions. The data was well fitted with Langmuir and Freundlich isotherms. The maximum adsorption capacity for raw, defatted and sulfuric acid pretreated DAB was found to be 6.0, 7.73 and 7.80 mg g−1, respectively. The specific surface area of raw, defatted and sulfuric acid pretreated DAB was estimated to be 14.70, 18.94, and 19.10 m2 g−1, respectively. To evaluate the kinetic mechanism that controls the adsorption process, pseudo-first order, pseudo-second order, intraparticle diffusion and particle diffusion has been tested. The data fitted quite well with pseudo-second order kinetic model.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 184, May 2015, Pages 395–404
نویسندگان
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