Urea Granules with Biopolymer Coating to Reduce Nitrogen Release Rate
Publish place: The 14th Conference of chemical Engineering
Publish Year: 1391
نوع سند: مقاله کنفرانسی
زبان: English
View: 1,472
This Paper With 6 Page And PDF Format Ready To Download
- Certificate
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
NICEC14_809
تاریخ نمایه سازی: 3 آذر 1391
Abstract:
Urea is one of the soluble granular fertilizers. This solubility property leads to environmental pollution. One method to reduce environmental pollution involves the use of slow-releasefertilizers. These fertilizers are coated with materials, which reduce their dissolution rate. The aim of this study was to develop a biodegradable coating biopolymer film to reduce release rate ofnitrogen. For this purpose, modified lignin was selected as coating material. The fluidized bed was used to coating process with modified lignin. Two different mass percentages of coating material, including 2.1% and 3.4% was used to investigate the effect of the coating thickness on nitrogenrelease. Experimental results showed when the percentage of coating film was increased from2.1% to 3.4%, the nitrogen release decreased from 80% to 45% after 40 minutes, whereas the corresponding value for urea was 100%. Also, 105 minutes and 5 hours needed to release thenitrogen totally for the samples of 2.1% and 3.4% coating, respectively. This coated fertilizer, with nearly 5 hr delay in dissolution rate, not only is matched to the demand rate of the very precious plants, but also is environment friendly from point of view nitrate pollution losses
Keywords:
Authors
J Behin
Chemical Engineering Department, Faculty of Engineering, Razi University, Kermanshah, Iran
مراجع و منابع این Paper:
لیست زیر مراجع و منابع استفاده شده در این Paper را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود Paper لینک شده اند :