References
- Das , D. and Veziroglu , T.N. 2001 . Hydrogen production by biological process: a survey of literature . Int. J. Hydrogen Energy , 26 : 13 – 28 .
- Roychowdhury , S. , Cox , D. and Levandowsky , M. 1988 . Production of hydrogen by microbial fermentation . Int. Hydrogen Energy , 13 ( 7 ) : 407 – 410 .
- Lester , J.N. , Sterritt , R.M. and Kirk , P.W. 1983 . Significance and behavior of heavy metals in wastewater treatment processes . Sci. Total Environ. , 30 : 45 – 83 .
- Mosey , F.E. 1976 . Assessment of the maximum concentration of heavy metals in crude sewage which will not inhibit anaerobic digestion of sludge . J. Water Pollut. Control Fed. , 48 : 10 – 20 .
- Vallee , B.J. and Ulmer , D.D. 1972 . Biochemical effects of mercury, cadmium, and lead . Ann. Rev. Biochem. , 41 : 91 – 128 .
- Fletch , P. and Becktt , P.H.T. 1987 . The chemistry of heavy metals in digested sewage sludge-II. Heavy-metals complexation with soluble organic matter . Water Res. , 21 : 1163 – 1172 .
- Mueller , R.F. and Steiner , A. 1992 . Inhibition of anaerobic digestion caused by heavy metals . Water Sci. Technol. , 26 : 835 – 846 .
- Lin , C.Y. 1993 . Effect of heavy metals on acidogenesis in anaerobic digestion . Wat. Res. , 27 : 147 – 152 .
- Kong , I.C. , Hubbard , J.S. and Jones , W.J. 1994 . Metal-induced inhibition of anaerobic metabolism of volatile fatty acid and hydrogen . Appl. Microb. Biotech. , 42 : 396 – 402 .
- Fang , H.H.P. and Hui , H.H. 1994 . Effect of heavy metals on the methanogenic activity of starch-grading granules . Biotech. Lett. , 16 : 1091 – 1096 .
- Owen , W.F. , Stuckey , D.C. , Healy , J.B. and McCarty , P.L. 1979 . Bioassay for monitoring biochemical methane potential and anaerobic toxicity . Wat. Res. , 13 : 485 – 492 .
- Yu , H.Q. and Fang , H.H.P. 2001 . Inhibition on acidogenesis of dairy waster by zinc and copper . Environ. Technol. , 22 : 1459 – 1465 .
- Dubois , M. , Gilles , K.A. , Hamilton , J.K. , Rebers , P.A. and Smith , F. 1956 . Colorimetric method for determination sugars and related substance . Anal. Chem. , 28 ( 3 ) : 350 – 356 .
- APHA. 1995 . Standard Methods for the Examination of Water and Wastewater, , 19th Ed. Washington , DC : American Public Health Association, American Water Works, and Water Environment Federation .
- Lay , J.J. and Noike , T. 1999 . Feasibility of biological hydrogen production from organic fraction of municipal solid waste . Water Res. , 33 ( 11 ) : 2579 – 2586 .
- Yenigun , O. , Kizilgun , F. and Yilmazer , G. 1996 . Inhibition effects of zinc and copper on volatile fatty acid production during anaerobic digestion . Environ. Technol. , 17 : 1269 – 1274 .