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c-n-ratio
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Vermicomposting of organic solid waste with the E. Fetida in different bedding materials case study: Jalal-e-aieahmad vegetable and fruit market of tehran at summer 2009
, Article Journal of Environmental Studies ; Volume 36, Issue 55 , 2010 , Pages 37-42 ; 10258620 (ISSN) ; Shayegan, J ; Sharif University of Technology
2010
Effect of C/N ratio on the phytoremediation of crude oil contaminated soils by puccinellia distance
, Article Iranian Journal of Chemistry and Chemical Engineering ; Volume 27, Issue 3 , September and October , 2008 , Pages 77-85 ; 10219986 (ISSN) ; Voussoughi, M ; Yaghmaei, S ; Abedi Koupai, J ; Borghaei, M ; Gholam Reza, P ; Sharif University of Technology
2008
Abstract
Petroleum contamination of soil is a serious problem throughout the oil producer countries. Vegetation may play an important role in the biodegradation of toxic organic chemicals in soil. For petroleum compounds, the presence of rhizosphere micro flora may accelerate biodegradation of the contaminants. In a greenhouse study, petroleum contaminated soil were treated using phytoremediation . The C/N ratios and microbial populations were assessed in the beginning and the end of trials. The results showed that Puccinellia distance could tolerate the harsh condition of the soils. As MPN increases, C/N ratios decrease among trials. N, as a nutrient, had effects on both microbial populations and...
Effects of puccinellia distans and tall fescue on modification of c/n ratios and microbial activities in crude oil-contaminated soils
, Article Petroleum Science and Technology ; Volume 27, Issue 5 , 2009 , Pages 452-463 ; 10916466 (ISSN) ; Voussoughi, M ; Yaghmaei, S ; Abedi-Koupai, J ; Borghei, M ; Ghafoori, S ; Sharif University of Technology
Abstract
Petroleum contamination of soil is a serious problem throughout oil-producing countries. One of the cost-effective options for removing contaminants from shallow soils is phytoremediation. Vegetation, by stimulating the microorganisms via releasing root exudates near the rhizosphere, may play an important role in the biodegradation of toxic organic chemicals in soil. This experiment investigates the efficiency of this emerging technology following the implementation of five plant species. The study was carried out in a greenhouse using crude oil-contaminated soil from sites around the Tehran Refinery. To study the effect of a water-absorbent agent, we also used hydrogel in this experiment....