Journal
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
Volume 29, Issue -, Pages 298-303Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2015.04.009
Keywords
Agricultural waste; Corn cob; Characterization; Silica; Catalytic activity
Funding
- National Research Foundation of Korea (NRF) grant - government (MEST) [2011-0020202]
- National Research Foundation of Korea [2011-0020202] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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A simple method based on alkaline extraction followed by acid precipitation can be used to form silica aquagel from corn cob ash (CCA). SEM-EDS analysis confirmed the high silicon and oxygen content of the extracted silica. XRD diffraction indicated that the obtained product was amorphous silica, while FTIR data demonstrated the presence of siloxane and silanol groups. TEM images revealed the silica to be amorphous, and have an agglomeration form with an average diameter of similar to 50 nm. CCA-extracted silica (0.1 g/20 ml) was observed to have good catalytic potential with 100% removal of 12 x 10(-4) M methylene blue. (C) 2015 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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