کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8393560 1544071 2017 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Managing the excessive proliferation of glycogen accumulating organisms in industrial activated sludge by nitrogen supplementation: A FISH-NanoSIMS approach
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
Managing the excessive proliferation of glycogen accumulating organisms in industrial activated sludge by nitrogen supplementation: A FISH-NanoSIMS approach
چکیده انگلیسی
In this study, the effect of nitrogen addition on GAO carbon metabolism was investigated during an 8 h cycle. Activated sludge dominated by GAO from a winery wastewater sequencing batch reactor was incubated under different carbon to nitrogen (COD:N) ratios (100:1, 60:1 and 20:1) using 13C - acetate and 15N - urea. GAO cell assimilation was quantified using FISH-NanoSIMS. The activated sludge community was assessed by 16S rRNA gene profiling, DNA and storage polymer production. Carbon and nitrogen quantification at the cellular level by NanoSIMS revealed that low (COD:N of 100:1) or null nitrogen concentrations enhanced GAO carbon uptake. COD:N ratios of 60:1 and 20:1 reduced GAO carbon uptake and promoted whole microbial community DNA production. Nitrogen dosing at COD:N ratios of 60:1 or higher was demonstrated as feasible strategy for controlling the excessive GAO growth in high COD waste treatment plants.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Systematic and Applied Microbiology - Volume 40, Issue 8, December 2017, Pages 500-507
نویسندگان
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