SCREENING OF OPERATING VARIABLES FOR AMMONIA REMOVAL FROM AQUEOUS SOLUTION BY NATURAL ZEOLITE
محل انتشار: دومین کنفرانس بین المللی نفت، گاز و پتروشیمی
سال انتشار: 1393
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 562
فایل این مقاله در 5 صفحه با فرمت PDF قابل دریافت می باشد
- صدور گواهی نمایه سازی
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
ICOGPP02_179
تاریخ نمایه سازی: 29 آبان 1394
چکیده مقاله:
Ammonia in petrochemical wastewater is one of the most hazardous water pollutants. Natural zeolite clinoptilolite has very high selectivity & capacity for ammonium cation sorption. It occurs in high abundances and rich mines of zeolite exist in different parts of iran and thus are available more cheaply and with different sizing . The objective of this research was to study the efficiency of ammonia removal and the factor affecting to this process. Clinoptilolite was obtained from Sabzevar mines. The samples were grounded and sieved based on the U.S. standard mesh. Natural clinoptilolite was modified through treatment with various acid. Ammonia removal efficiency by HCl-zeolite modified was about 97.78%, compared to less than 29.59% by natural zeolite. Operating variables were: Zeolite size, pH, contact time, the amount of zeolite, inlet ammonia concentration, temperature, agitation and other cation (Ca2+). Plackett–Burman statistical method was used to screen the variables.particles size, the amount of zeolite and contact time were found to be important for ammonia removal efficiency. Removal efficiency of ammonia increaseed with decrease in contact time and particles size for experimental design. It was found that the sabzevar modified zeolite removed ammonia to 97.97% from aqueous solution . then regeneration tests were done by contacting of 1.0 M NaCl solution. Regeneration efficiency of zeolite by NaCl solution was 81.57%.
کلیدواژه ها:
نویسندگان
z.b Mokhtari Hosseini
Chemical Engineering Group, Faculty of Oil and Petrochemical Engineering, Hakim Sabzevari University, P.O. Box ۹۶۱۷۹۷۶-۴۸۷, Sabzevar, Iran
t Shenavaei Zare
Chemical Engineering Group, Faculty of Oil and Petrochemical Engineering, Hakim Sabzevari University, P.O. Box ۹۶۱۷۹۷۶-۴۸۷, Sabzevar, Iran
e Kazemiyan
Faculty of Engineering, Shahrood Azad University, Shahrood, Iran
مراجع و منابع این مقاله:
لیست زیر مراجع و منابع استفاده شده در این مقاله 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 مقاله لینک شده اند :