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Influence of Various Degradation Conditions on the Properties of Gas-Generating Soils in the Process of Their Decontaminationстатья
Информация о цитировании статьи получена из
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 17 октября 2017 г.
- Авторы: Gladchenko M.A., Gaidamaka S.N., Murygina V.P., Lifshits A.B.
- Журнал: Russian Journal of Physical Chemistry B
- Том: 11
- Номер: 4
- Год издания: 2017
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 561
- Последняя страница: 567
- DOI: 10.1134/S1990793117040078
- Аннотация: The properties of gas-generating soils (GGS) in the process of biofermentation under anaerobic and aerobic conditions are studied. The degradation of organic matter (OM) in a soil under natural occurrence conditions (without free access of air oxygen) at emperatures from 10 to 12 °C is demonstrated to proceed at a specific reaction rate of k = 0.096 ear−1. The main phase of gas generation (biogas formation) is shown to take 15 years, with the content of methane in the biogas being 60−80 vol %. It has been established that, under the conditions of forced aeration of the GGS array, the specific reaction rate of OM degradation increases 10-fold, to 0.9673 year−1, with a nearly complete decomposition of OM taking 1.5−2.0 years. A prerequisite for achieving of the predicted result is the maintenance of the environment humidity at a level not lower than 50%. Application of an alternative method, a thermal treatment of GGS increases the degree of OM decomposition to 59% within 4 h at 200°C and to 75% within 2 h at 300°C. In this case, residual organic substances are carbonized in the course of thermal treatment, transforming into a material resistant to microbiological decomposition. In fact, after heating at 200−300°C, GGS becomes inert from the gas-geochemical point of view.
- Добавил в систему: Гладченко Марина Анатольевна