Utilization of waste eggshells as humidity adsorbent
บทความในวารสาร
ผู้เขียน/บรรณาธิการ
กลุ่มสาขาการวิจัยเชิงกลยุทธ์
ไม่พบข้อมูลที่เกี่ยวข้อง
รายละเอียดสำหรับงานพิมพ์
รายชื่อผู้แต่ง: Pongtonglor P., Hoonnivathana E., Limsuwan P., Limsuwan S., Naemchanthara K.
ผู้เผยแพร่: Asian Network for Scientific Information (ANSINET)
ปีที่เผยแพร่ (ค.ศ.): 2011
วารสาร: Journal of Applied Sciences (1812-5654)
Volume number: 11
Issue number: 21
หน้าแรก: 3659
หน้าสุดท้าย: 3662
จำนวนหน้า: 4
นอก: 1812-5654
eISSN: 1812-5662
ภาษา: English-Great Britain (EN-GB)
บทคัดย่อ
The chicken and duck eggshell powders were prepared and heated at 1300ฐC for 4 h. The samples were analyzed by X-Ray Diffraction (XRD). It was found that Calcium Carbonate (CaCO3) from chicken and duck eggshells completely transformed into Calcium Oxide (CaO). Then the samples were placed in a box installed with a hygro-thermometer for humidity adsorption test in the range of 20-75% RH at 25ฐC. Hydration rate for duck and chicken eggshells were 0.0625% RH min-1 (within 880 min) and 0.0482% RH min-1 (within 1140 min) respectively. The results show that CaO from the duck eggshells is a better adsorbent than that of chicken eggshells. Furthermore, after humidity adsorption, CaO obtained from both eggshells were partly transformed into portlandite (Ca(OH)2 was confirmed by the Rietveld refinement method and Scanning Electron Microscope (SEM). ฉ 2011 Asian Network for Scientific Information.
คำสำคัญ
Calcium carbonate, Calcium oxide, Eggshell, Humidty adsorption, Hydration rate, Podlandite