The Role of Methanogens in Waste Water Treatment

Introduction

Filamentous methanogen. Obtained from Maryland Astrobiology Consortium, NASA, and STScI

Methanogens

Classification of the different orders of Methanogens. Obtained from http://dc344.4shared.com/doc/U1tNMdLZ/preview.html

Methanogenesis

The figure represents the main pathways of methanogenesis which convert CO2, acetate, or organic acids into methane gas. Image obtained from http://microbewiki.kenyon.edu/index.php/Black_Sea

Uses in Wastewater Treatment

Anaerobic_Reactors.jpeg‎

Possible Environmental Impacts

Include some current research in each topic, with at least one figure showing data.

Conclusion

Overall paper length should be 3,000 words, with at least 3 figures.

References

[1]M. R.J. Daelman, E. M. van Voorthuizen, U. G.J.M. van Dongen, E. I.P. Volcke, M. C.M. van Loosdrecht. "Methane emission during municipal wastewater treatment". Water Research. 2012. Volume 46. p. 3657-3670.

[2]A.E. Johansson, A-M. Gustavsson, M.G. Oquist, B.H. Svensson. "Methane emissions from a constructed wetland treating wastewater-seasonal and spatial distribution and dependence on edaphic factors". Water Research. 2004. Volume 38. p. 3960-3970.

[3]Toprak, Hikmet. "Temperature and organic loading dependency of methane and carbon dioxide emission rates of a full-scale anaerobic waste stabilization pond". Water Research. 1995. Volume 29. p. 1111-1119.

[4]E. Uggetti, J Garcia, S. E. Lind, P. J. Martikainen, I. Ferrer. "Quantification of greenhouse gas emissions from sludge treatment wetlands". Water Research. 2012. Volume 46. p. 1755-1762.

[5]J. Wang, J. Zhang, H. Xie, P. Qi, Y. Ren, Z. Hu. "Methane emissions from a full-scale A/A/O wastewater treatment plant". Bioresource Technology. 2011. Volume 102. p. 5479-5485.

[6]M. Tabatabaei, R. A. Rahim, N. Abdullah, A-D. G. Wright, Y. Shirai, K. Sakai, A. Sulaiman, M. A. Hassan. "Importance of the methanogenic archaea populations in anaerobic wastewater treatments". Process Biochemistry. 2010. Volume 45. p. 1214-1225.

[7]Y. Wang, C. Ye, H. Yang, J. Zhang, C. Huang, B. Xie. "Methane formation in soil-plant systems treating wastewater as influenced by microbial populations". Environmental Earth Science. 2013. Volume 70. p. 1647-1652.

[8][Slonczewski, J.L., and Foster, J.W. "Microbiology: An Evolving Science". W.W. Norton and Company. 2014. Third Edition.]

Edited by student of Joan Slonczewski for BIOL 238 Microbiology, 2009, Kenyon College.