کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4997014 1459902 2017 32 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enhancing thermophilic co-digestion of nitrogen-rich substrates by air side-stream stripping
ترجمه فارسی عنوان
افزایش ترشح هورمون ترموفیلیک زیربنای غنی از نیتروژن با ته نشست هوا در هوا
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
چکیده انگلیسی
High ammonia concentrations can inhibit thermophilic anaerobic digestion, thus limiting the advantageous treatment of wastes rich both in carbon and nitrogen. In the present paper, an air side-stream stripping column was coupled to two thermophilic digesters to control ammonia content. The effects of exposing an increasing biomass fraction to the harsh conditions inside the column (pH above 9, O2 at saturation and high T) on digester performance were tested by treating and recirculating 21% of reactor volume 3 or 5 times per week. Neither biomass/liquid separation before stripping nor addition of chemicals to control pH were required. Ammonium nitrogen concentration was lowered from 2.4 to 1.1 ± 0.1 g N-TAN L−1 and from 4.5 to 2.0 ± 0.1 g N-TAN L−1 without compromising process stability. The air side-stream stripping process was successfully implemented to maintain ammonia concentration below 0.6 ± 0.1 g N-NH3 L−1 while boosting methane production by doubling organic (and therefore nitrogen) loading rate.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 241, October 2017, Pages 397-405
نویسندگان
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