Assessing of alkaline and enzymatic pre-treatment: comparison as WAS solubilisation process to maximize its potential as carbonaceous source
| العنوان: | Assessing of alkaline and enzymatic pre-treatment: comparison as WAS solubilisation process to maximize its potential as carbonaceous source |
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| المؤلفون: | José Tavares de Sousa, Railson de Oliveira Ramos, Kely Dayane Silva do Ó, Tales Abreu Tavares de Sousa, Valderi Duarte Leite, Israel Nunes Henrique |
| المصدر: | Biomass Conversion and Biorefinery. 13:355-366 |
| بيانات النشر: | Springer Science and Business Media LLC, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | chemistry.chemical_classification, Renewable Energy, Sustainability and the Environment, Chemistry, business.industry, Phosphorus, Sewage, chemistry.chemical_element, Fraction (chemistry), Sequencing batch reactor, Biodegradation, Pulp and paper industry, Respirometry, Activated sludge, Organic matter, business |
| الوصف: | The study comparatively evaluated the alkaline and enzymatic solubilisation of waste activated sludge (WAS) from a sequencing batch reactor treating sewage. In order to increase the readily biodegradable fraction, both pre-treatment technologies were investigated with two different reaction times (8 and 48 h). The significance of the time influence was analysed by comparing the results of each technology. The concentrations of CODf, proteins, carbohydrates, phosphorus, and orthophosphate were the parameters investigated in the soluble fraction, considering that its increase indicates the degradation process of sludge floc, and its consequent solubilisation. Respirometry testing was also a parameter used to assess the biodegradability of the control sludge, without pre-treatment, and after both pre-treatments were carried out. The sludge solubilisation rate increased for both technologies investigated. However, the statistical analysis applied indicated the alkaline pre-treatment as more effective, also the reaction time as significantly relevant for alkaline solubilisation. For this technology, the metabolised organic matter was increased by 178 and 279 mgCODf L−1 with reaction times of 8 and 48 h, respectively. Also, the readily biodegradable fraction was increased reaching a factor 18–29. Despite the higher efficiency of the alkaline pre-treatment, the enzymatic process showed a higher fraction of COD used, possibly due to the organic properties of the enzyme itself. |
| تدمد: | 2190-6823 2190-6815 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::4d5de6a65bc28aa819b4ea544af1417d https://doi.org/10.1007/s13399-021-01834-x |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........4d5de6a65bc28aa819b4ea544af1417d |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 21906823 21906815 |
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