کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6354159 | 1622638 | 2016 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Distribution of Polycyclic Aromatic Hydrocarbons (PAHs) in sludge organic matter pools as a driving force of their fate during anaerobic digestion
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کلمات کلیدی
ANTDBahAbenzo(a)anthracenebenzo(ghi)peryleneFLTPYRNEXOMPBghipBbFPHEBAPBAAASEWWTPBkF - BKFNER - DOWNPCA - PCAind - اندرAnthracene - اینتگرین Benzo(a)pyrene - بنزو (a) پیرنهBenzo(b)fluoranthene - بنزو (ب) فلورانتنBenzo(k)fluoranthene - بنزو (ک) فلورنتنPrincipal components analysis - تجزیه و تحلیل اجزای اصلیWaste water treatment plant - تصفیه خانه فاضلابInoculum - تلقیحOrganic matter characterization - خصوصیات آلی موادBioaccessibility - دسترسی بیواسطهFlu - سرفهComplexity index - شاخص پیچیدگیaccelerated solvent extraction - شتاب دهنده استخراج حلالOctanol/water partition coefficient - ضریب پارتیشن اکتانول / آبFluorene - فلوئورن Fluoranthene - فلوورانتنDOM - قضاوتSubstrate - لایهSludge - لجنDissolved organic matter - ماده آلی حل شدهOrganic micropollutants - میکروپولنتن های آلیAnaerobic digestion - هضم بیهوازیPAHs - هیدروکربن های آروماتیک چند حلقه ایPhenanthrene - پنانترنPyrene - پیرنهCHRY - چریCod - کادوchrysene - کریستینKow - کوه
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
مهندسی ژئوتکنیک و زمین شناسی مهندسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The fate of organic matter during anaerobic digestion of sewage sludge was studied in batch systems thanks to a sequential chemical fractionation of the particulate phase coupled to fluorescence spectroscopy. Polycyclic Aromatic Hydrocarbons (PAHs) distribution within the organic pools was characterized from their analysis in the residual fraction after each extraction. Both methods were combined to understand the link between PAHs presence in organic pools and their spectral characterization after extraction. Two batch systems (sludge and inoculum mixture) were set up to study the impact of PAHs spiking on their fate and distribution. The sequential fractionation allowed us to extract and characterize about 50% of total Chemical Oxygen Demand. Moreover, fluorescence spectroscopy helped us to understand the organic pools evolution: the most easily extracted pools composed of protein-like molecules were highly degraded meaning that chemical accessibility mimics the bioaccessibility to degrading microorganisms. PAHs were present in all pools of organic matter but native PAHs were mainly present in low accessible (hardly extractable) fractions and during anaerobic digestion, they accumulated in the non-accessible (non extractable) fraction. Spiked PAHs were more dissipated during anaerobic digestion since spiking made them present in more accessible fractions. During the anaerobic digestion, contrary to native PAHs, spiked ones relocated toward less accessible organic fractions confirming the ageing phenomenon. PCA analysis showed that, in spiked mixture, PAHs presence in organic pools is linked to both PAHs physical-chemical properties and quality/quantity of the associated organic pools.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Waste Management - Volume 48, February 2016, Pages 389-396
Journal: Waste Management - Volume 48, February 2016, Pages 389-396
نویسندگان
Quentin Aemig, Claire Chéron, Nadine Delgenès, Julie Jimenez, Sabine Houot, Jean-Philippe Steyer, Dominique Patureau,