Print this page Email this page
Users Online: 4545
Home About us Editorial board Search Browse articles Submit article Instructions Subscribe Contacts Login 
Year : 2013  |  Volume : 2  |  Issue : 1  |  Page : 8

Inhibition and anaerobic biodegradation of benz[a]anthracene-7,12- dione via the specific methanogenic activity test

Environment Research Center, Isfahan University of Medical Sciences (IUMS), Isfahan, Iran, and Department of Environmental Health Engineering, School of Health, IUMS, Isfahan, Iran

Correspondence Address:
Fazel Mohammadi Moghadam
Environment Research center, Isfahan University of Medical Sciences, Hezar Jerib Ave. Isfahan
Login to access the Email id

Source of Support: Environment Research Center of Isfahan University of Medical Sciences (Project Grant, # 288157).,, Conflict of Interest: None

DOI: 10.4103/2277-9183.107920

Rights and Permissions

Aims: The purpose of this study was to determine the inhibition and anaerobic biodegradation of benz[a]anthracene-7, 12-dione (BaAQ) via the specific methanogenic activity (SMA) test. Materials and Methods: In this study, 120 mL vials were filled with given concentration of BaAQ, anaerobic biomass and substrate. Each batch experiment was lasted 13 to 26 days. The inhibition effects of BaAQ with concentrations of 0.5, 5, 25, 50, 100, 250 and 500 mg/L on the methanogenic process was investigated in the presence of volatile fatty acids including acetic, butyric and propionic acids. Results: In some eatch test, the gas production was stopped after 13 days (312 h). Therefore, 312 h was considered as compared base of gas production. After this time, methane production cumulative rate was calculated for the each SMA. After 13 days (312 h) the lowest and the highest cumulative methane has been produced (per mL) at the presence of concentrations of 250 and 0.5 mg/L of BaAQ, respectively. Conclusion: The results of this study showed that the BaAQ with concentration of 250 mg/L has more inhibition effect on methane production rather than other concentrations (even of 500 mg/L). Therefore, we should not always expect that higher concentrations of toxic compounds had more inhibitory effects than low concentrations of them.

Print this article     Email this article
 Next article
 Previous article
 Table of Contents

 Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Related articles
 Citation Manager
 Access Statistics
 Reader Comments
 Email Alert *
 Add to My List *
 * Requires registration (Free)

 Article Access Statistics
    PDF Downloaded320    
    Comments [Add]    
    Cited by others 1    

Recommend this journal