عنوان البحث(Papers / Research Title)
بحث-adsorption on different types of beds
الناشر \ المحرر \ الكاتب (Author / Editor / Publisher)
محمد عبد مسلم عبد الله الطفيلي
Citation Information
محمد,عبد,مسلم,عبد,الله,الطفيلي ,بحث-adsorption on different types of beds , Time 6/16/2011 7:53:05 AM : كلية الهندسة
وصف الابستركت (Abstract)
بحث-adsorption on different types of beds
الوصف الكامل (Full Abstract)
Evaluation of Methylene Blue Removal From Water by Adsorption onto Different Types of Adsorbent Beds
Asst. Prof. Dr. Mohammed A. Muslim
Asst. Prof. Dr. Jabbar H. Al-Baidhany
Wissam H. Alwan Al-Taliby
Babylon
University/
College of
Engineering/Dept. of Civil Engineering
Abstract
The aim of this research is to evaluate the applicability of using locally available materials and commercial activated carbon for the adsorption of methylene blue dye using continuous system (fixed bed). Two local materials in addition to commercial activated carbon, where evaluated for the adsorption process. These materials included Iraqi porcellanite rocks and activated carbon prepared from Iraqi palm-date pits.
During the present study, activated carbon was prepared from Iraqi palm-date pits using chemical activation method by impregnation in 85% phosphoric acid followed by carbonization in 400?C. Eighteen experiments and different column systems where carried out at various adsorbent types, initial concentrations, flow rate, bed depth, and different weight ratios of Date pits AC-commercial AC and Porcellanite-commercial AC. Two types of experiments were carried out, batch experiments and continuous flow (column system) experiments. Batch study showed that equilibrium isotherms for all the adsorbents used in the study are of favorable type. The equilibrium data for methylene blue adsorption on different adsorbents well fitted to the Langmuir equation, with maximum monolayer adsorption capacities of (21.86 mg/g), (21.12 mg/g), and (10.17 mg/g) exhibited by Porcellanite, commercial activated carbon and the produced activated carbon respectively. Porcellanite achieved higher removal efficiencies followed by commercial activated carbon and date-pits activated carbon. Column experiments (continuous system) showed that the use of granular porcellanite instead of GAC reduces the operating time by only 11% at similar operation conditions. While the use of the produced date-pits activated carbon reduces the operating time by 35% compared to GAC at similar operation conditions. It was found that adding different weight ratios of porcellanite or date-pits activated carbon to the commercial activated carbon bed increases the operating time. (Data Fit version 9.0) program was used for statistical analysis of experimental results.
Keywords: Adsorption; Palm-Date pits; Porcellanite; Methylene blue.
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