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Iranian Journal of Materials Science and Engineering، جلد ۱۷، شماره ۲، صفحات ۰-۰
عنوان فارسی
چکیده فارسی مقاله
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عنوان انگلیسی Preparation of a Mesoporous Ceramic Adsorbent Based on Iranian Domestic Kaolin to Utilize as Slow-Release Urea Fertilizer Medium
چکیده انگلیسی مقاله Overusing nitrogen fertilizer causes some serious problems for water resources, soil, and agriculture products. Researchers have been trying to develop effective means which may use less amount of fertilizers containing nitrogen. In this work, cost-effective ceramic granule adsorbent was prepared to be used as a fertilizer carrier of controlled release behavior. A mixture of 70 wt.% domestic kaolin and 30 wt.% gibbsite was used to produce the granules. By utilizing thermal analysis of raw granule, the calcination temperatures were obtained and the effect of various calcination temperatures of 500, 600, and 700˚C on the water adsorption was studied. The characteristics of granules were investigated by XRD, BET, FTIR, and SEM analyses. The results showed that by increasing the calcination temperature, the crystal structure of the granules was transformed into a dehydrated form and by calcination at 600°C the specific surface area of granules increased from 7.50 to 53.45m2/g. The granules were soaked in a 500g/lit solution of urea, where they adsorbed about 10wt.% urea. The dried urea-loaded granules were placed in water where the release of urea was measured by UV-vis spectrophotometry. Finally, different portions of urea-loaded granules were evaluated as fertilizer in the growing bed of corn plant where the height and the stem diameter of samples were compared with a control sample as well as a sample fertilized by urea directly. The results showed that by using the loaded granules, the urea consumption can be reduced by 50%.  
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نویسندگان مقاله | S.M. Moussavi Janbesarayi
Department of Materials Science and Engineering, Faculty of Engineering, Imam Khomeini International University (IKIU), Qazvin, Iran


| M. Mohebi
Department of Materials Science and Engineering, Faculty of Engineering, Imam Khomeini International University (IKIU), Qazvin, Iran


| S. Baghshahi
Department of Materials Science and Engineering, Faculty of Engineering, Imam Khomeini International University (IKIU), Qazvin, Iran


| S.A.A. Alem
Department of Materials Science and Engineering, Faculty of Engineering, Imam Khomeini International University (IKIU), Qazvin, Iran


| E. Irom
Department of Ceramic, Materials and Energy Research Center (MERC), Alborz, Iran
نشانی اینترنتی http://ijmse.iust.ac.ir/browse.php?a_code=A-10-2493-1&slc_lang=en&sid=1
فایل مقاله اشکال در دسترسی به فایل - ./files/site1/rds_journals/454/article-454-2411322.pdf
کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده گروه سرامیک
نوع مقاله منتشر شده Research paper
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