کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4909948 | 1427559 | 2016 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Long-term operation of anaerobic immobilized biomass reactor treating organic wastewater containing sulfate
ترجمه فارسی عنوان
کارکرد طولانی مدت راکتور بیوماس بی تحرک بی هوازی که از پسماندهای آلی حاوی سولفات برخوردار است
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کلمات کلیدی
راکتور بی هوازی، اتانول، عملیات طولانی مدت، کف پلی اورتان، سولفات،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
This work evaluates the long-term performance (888 days) of a horizontal-flow anaerobic immobilized biomass (HAIB) reactor fed with synthetic wastewater containing organic matter and sulfate. The HAIB reactor achieved stable performance, exhibiting high sulfate and organic matter removal efficiencies subjected to organic matter concentration (expressed as chemical oxygen demand - COD) of 1500Â mg/L and sulfate of 500Â mg/L. Sulfate removal efficiency close to 100% was obtained for COD/sulfate ratios equal to or higher than 2.6, decreasing to â¼80% for COD/sulfate ratio of 1.4. Sulfidogenesis was clearly dependent on the availability of electron donor; but not methanogenesis. The smaller COD removal efficiencies (â¼93%) were observed at the higher sulfate (1980Â mg/L) and organic matter (COD of 7000Â mg/L) concentrations, with COD/sulfate ratio of 3.5. Under these conditions, the presence of volatile fatty acids in the effluent indicates the occurrence of methanogenesis inhibition probably due to sulfide. The fixed-film HAIB reactor did not present bed clogging throughout the entire long-term operation period, thereby leading the way to new perspectives to use the efficient treatment of sulfate-rich wastewater.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Water Process Engineering - Volume 13, October 2016, Pages 100-106
Journal: Journal of Water Process Engineering - Volume 13, October 2016, Pages 100-106
نویسندگان
Márcia Helena Rissato Zamariolli Damianovic, Flávia Talarico Saia, Leandro Augusto Gouvêa de Godoi, Eugenio Foresti,