BYRNS, G., WHEATLEY, A. and SMEDLEY, V., 2013. Carbon dioxide releases from wastewater treatment: potential use in the UK. Proceedings of the Institute of Civil Engineers - Engineering Sustainability, 166(3), pp.111-121.
Power consumption by the UK water industry has increased as a result of the introduction of new quality standards;
the annual (2008/2009) carbon dioxide output was reported at 5?1 Mt. Biogenic output of carbon dioxide for the
sector was calculated to be about 2 Mt. The strategies available to the water industry for reducing carbon footprint
are increased use of renewable energy, principally anaerobic digestion, using less power and methods for reducing
carbon dioxide emissions. This paper reports on work sponsored by UK Water Industry Research to examine methods
for capturing and utilising carbon dioxide from wastewater treatment. The review has concluded that bioconversion
and biofixation using algae and hydrogenotrophic methanogenesis are the most promising methods for utilising
carbon dioxide. These technologies would readily integrate into existing industry flow sheets and both increase
biogas production and reduce carbon dioxide emissions.