Doping of Eucalyptus Wood Residue based-Activated Carbon with Monoethanolamine for Enhancement of CO2 Adsorption
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Abstract
This study aimed to develop a carbon dioxide adsorbent from biomass residue. Eucalyptus wood residue of 20 grams was sonically activated in 160 ml of a phosphoric acid solution of 3 and 6 molar for 45 minutes. Then the activated samples were carbonized at 450°C for 1 hr in inert atmosphere. It was found that activated carbon prepared at immersion in 3 molar of phosphoric acid solution had a high specific surface area of 1,330.43 m2/g with mostly mesopores. Therefore, this activated carbon was selected to develop as an adsorbent by doping monoethanolamide at a concentration of 10-50% by weight. Effect of using two doping methods; hot-plate heating and shaking-ultrasonic, were compared on the adsorbent properties. Results showed that the specific surface area, pore size and total pore volume of these doped-adsorbent decreased with the concentration of the dopant. Using shaking-ultrasonic technique gave less reduction of these properties than that of heating technique. The adsorbent with the greatest ability to adsorb carbon dioxide gas of 59.67 mmol/g was prepared from doping 10 percent by weight of monoethanolamine by shaking-ultrasonic method.
Article Details
วารสารวิศวกรรมฟาร์มและเทคโนโลยีควบคุมอัตโนมัติ (FEAT Journal) มีกําหนดออกเป็นราย 6 เดือน คือ มกราคม - มิถุนายน และกรกฎาคม - ธันวาคม ของทุกปี จัดพิมพ์โดยกลุ่มวิจัยวิศวกรรมฟาร์มและเทคโนโลยีควบคุมอัตโนมัติ คณะวิศวกรรมศาสตร์มหาวิทยาลัยขอนแก่น เพื่อเป็นการส่งเสริมและเผยแพร่ความรู้ ผลงานทางวิชาการ งานวิจัยทางด้านวิศวกรรมศาสตร์และเทคโนโลยีพร้อมทั้งยังจัดส่ง เผยแพร่ตามสถาบันการศึกษาต่างๆ ในประเทศด้วย บทความที่ตีพิมพ์ลงในวารสาร FEAT ทุกบทความนั้นจะต้องผ่านความเห็นชอบจากผู้ทรงคุณวุฒิในสาขาที่เกี่ยวข้องและสงวนสิทธิ์ ตาม พ.ร.บ. ลิขสิทธิ์ พ.ศ. 2535
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