کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
679749 1459954 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Algal-based, single-step treatment of urban wastewaters
ترجمه فارسی عنوان
تصفیه ی فاضلاب شهری مبتنی بر جلبک، یک مرحله ای است
کلمات کلیدی
متابولیسم متابولیک تصفیه فاضلاب، گالدییرا سولفوریا، حذف ارگانیک، حذف مواد مغذی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
چکیده انگلیسی


• Demonstrated wastewater treatment by mixotrophic metabolism.
• Demonstrated single-step removal of BOD and nutrients.
• Demonstrated higher BOD removal by mixotrophic metabolism.
• Demonstrated comparable nutrient removal by mixotrophic metabolism.

Currently, urban wastewaters (UWW) laden with organic carbon (BOD) and nutrients (ammoniacal nitrogen, N, and phosphates, P) are treated in multi-stage, energy-intensive process trains to meet the mandated discharge standards. This study presents a single-step process based on mixotrophic metabolism for simultaneous removal of carbon and nutrients from UWWs. The proposed system is designed specifically for hot, arid environments utilizing an acidophilic, thermotolerant algal species, Galdieria sulphuraria, and an enclosed photobioreactor to limit evaporation. Removal rates of BOD, N, and P recorded in this study (14.93, 7.23, and 1.38 mg L−1 d−1, respectively) are comparable to literature reports. These results confirm that the mixotrophic system can reduce the energy costs associated with oxygen supply in current UWW treatment systems, and has the potential to generate more energy-rich biomass for net energy extraction from UWW.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 189, August 2015, Pages 273–278
نویسندگان
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