1404/04/12
محبوبه ضرابی

محبوبه ضرابی

مرتبه علمی: استادیار
ارکید:
تحصیلات: دکترای تخصصی
اسکاپوس:
دانشکده: دانشکده کشاورزی
نشانی: کیلومتر چهار جاده ملایر -اراک، دانشگاه ملی ملایر، دانشکده کشاورزی ، گروه علوم خاک
تلفن:

مشخصات پژوهش

عنوان
Competitive Removal of Ammonium-Nitrogen from Aqueous Solutions by Mineral and Organic Adsorbents
نوع پژوهش
JournalPaper
کلیدواژه‌ها
Adsorption; ammonium-nitrogen; freundlich; isotherm; langmuir; mineral and organic adsorbent
سال
2018
مجله COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS
شناسه DOI
پژوهشگران Mahboubeh Zarabi

چکیده

Sorption potentials of mineral and organic materials for ammonium nitrogen (NHþ 4 N) removal from aqueous solution were investigated. Batch adsorption studieswere performed as a function of pH, contact time, and adsorbent dosage. Isotherm experiments were carried out by concentrations of NHþ 4  N ranged from0 to 1000 mg NHþ 4  N=l. The adsorption equilibrium was described well by the Langmuir and Freundlich isotherm models. The maximum adsorption capacities of NHþ 4  N decrease in this order: Zeolite> Bentonite> Canola residue> Municipal waste compost > Mushroom compost > Calcite > Kaolinite> Wheat bran. The energy of adsorption in mineral adsorbent ranged from 0.0014 L/mg (Kaolinite) to 0.0105 L/mg (Zeolite), while it was ranged from 0.0016 L/mg (Municipal waste compost) to 0.0033 L/mg (Wheat bran) in organic adsorbents. Our finding showed that organic adsorbents can be used as a novel and low-cost absorbents to remove NHþ 4  N from wastewater