کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5759274 | 1623042 | 2017 | 30 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Impact of phosphate limitation on PHA production in a feast-famine process
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کلمات کلیدی
TSSPHBPHAPolyhydroxyalkanoatesPAOGaOGMOsSBRPolyphosphate accumulating organisms - ارگانیزم های تجمع پلی فسفاتGenetically modified organisms - ارگانیسم های اصلاح شده ژنتیکیdissolved oxygen - اکسیژن محلولSequential batch reactor - راکتور بتنی متوالیMixed microbial cultures - فرهنگ های میکروبی مخلوطtotal suspended solids - مجموع مواد جامد معلقPolyhydroxybutyrate - پلی هیدروکسی بوتیرتTotal phosphorus - کل فسفرGlycogen accumulating organisms - گیاهان انجماد گلیکوژن
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Double-limitation systems have shown to induce polyhydroxyalkanoates (PHA) production in chemostat studies limited in e.g. carbon and phosphate. In this work the impact of double substrate limitation on the enrichment of a PHA producing community was studied in a sequencing batch process. Enrichments at different C/P concentration ratios in the influent were established and the effect on the PHA production capacity and the enrichment community structure was investigated. Experimental results demonstrated that when a double substrate limitation is imposed at a C/P ratio in the influent in a range of 150 (C-mol/mol), the P-content of the biomass and the specific substrate uptake rates decreased. Nonetheless, the PHA storage capacity remained high (with a maximum of 84Â wt%). At a C/P ratio of 300, competition in the microbial community is based on phosphate uptake, and the PHA production capacity is lost. Biomass specific substrate uptake rates are a linear function of the cellular P-content, offering advantages for scaling-up the PHA production process due to lower oxygen requirements.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Water Research - Volume 126, 1 December 2017, Pages 472-480
Journal: Water Research - Volume 126, 1 December 2017, Pages 472-480
نویسندگان
Emmanouela Korkakaki, Mark C.M. van Loosdrecht, Robbert Kleerebezem,