Czasopismo
2011
|
Vol. 4, no. 4
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123-130
Tytuł artykułu
Autorzy
Wybrane pełne teksty z tego czasopisma
Warianty tytułu
Języki publikacji
Abstrakty
The aim of the research project was to establish the most appropriate time of microwave exposure, which ensures effective sludge lysis. The assessment of the sludge disintegration was based on a release of organic (COD) and inorganic (PO43", NH4 , Ca2+, Mg2+) substances into liquid phase as well as the quantity and quality of the biogas produced. It was established that an increase in sludge biodegradability caused by a rise in COD, had a positive impact on the amount of biogas generated. Based on the results obtained, the optimum microwave exposure amounted to 4 min, and was correlated with the sludge temperature of 60°C for the power of 700W and 80°C for power of 900W. As compared to the amount of biogas generated with raw sludge, the optimum exposing time allowed to generate 49% and 60% more biogas at 700W and 900W respectively. Microwave treatment at both powers, did not have an influence on the CH4 content in biogas produced.
Celem badań przedstawionych w artykule było ustalenie najkorzystniejszego czasu oddziaływania mikrofal zapewniającego efektywną lizę nadmiernych osadów czynnych. Stopień dezintegracji osadu oceniano na podstawie zmian zawartości związków organicznych (ChZT) i nieorganicznych (PO43", NH4+, Ca + , Mg2+) w cieczy nadosadowej oraz ilości i jakości wygenerowanego biogazu. Poprawa biodegradowalności osadów wskutek wzrostu stężenia związków organicznych (ChZT) wpłynęła pozytywnie na ilość wydzielanego biogazu. Jako optymalny czas oddziaływania mikrofal na analizowany osad ściekowy uznano czas wynoszący 4 minuty, który odpowiadał temperaturze osadu na poziomie około 60°C dla mocy mikrofal 700W oraz około 80°C dla mocy mikrofal - 900W. Dla czasu tego produkcja biogazu w odniesieniu do ilości biogazu wygenerowanego przez osad surowy wzrosła o 49% (700W) i 60% (900W). Wstępne preparowanie osadu mikrofalami nie wpłynęło na zawartość CH4 w produkowanym biogazie.
Czasopismo
Rocznik
Tom
Strony
123-130
Opis fizyczny
Bibliogr. 42 poz.
Twórcy
autor
autor
autor
- Faculty of Energy and Environmental Engineering, Silesian University of Technology, Konarskiego 20, 44-100 Gliwice, Poland, jolanta.bohdnewicz@polsl.pl
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.baztech-article-BSL9-0064-0012