کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4768737 1424972 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Evaluation of combined lignite cleaning processes, flotation and microbial treatment, and its modelling by Box Behnken methodology
ترجمه فارسی عنوان
ارزیابی فرایندهای تمیز کردن ترکیب لجن، فرآوری شناور و میکروبی و مدل سازی آن با روش جعبه بونکن
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
In this study, first, the physicochemical cleaning of Cayirhan region's low-quality lignites was investigated by flotation to reduce ash content. In the flotation experiments, the effects of collector dosage, frother dosage, dispersant dosage, pulp density and air flow rate on ash content and combustible recovery in the concentrate fraction were optimized. Flotation tests were designed with Box Behnken design (BBD) which is a response surface method (RSM). The effective parameters and their interactions in lignite flotation are described with a mathematical model. After physicochemical cleaning, further desulfurization studies were carried out through biological treatment. Alternaria sp. Cf1 strain which was isolated from the same region lignites was used in microbial treatment for desulfurization studies. Sulfur emission values (EV) of studied sample, flotation and microbial treatment's concentrates were calculated and compared. After flotation and microbial treatments, sulfur emission values reduced from 12.76 to 1.01 to 0.34 for head sample, flotation and microbial treatment's concentrates, respectively that accounts for 97.37% total reduction in terms of dry ash free basis.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 192, 15 March 2017, Pages 178-186
نویسندگان
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