German engineers have developed a high-rate processing plant that generates biogas from sewage.
EDIE NEWSROOM (2002): Germany boosts biogas from new sewage treatment plant. URL [Accessed: 06.08.2010]German engineers have developed a high-rate processing plant that generates biogas from sewage.
EDIE NEWSROOM (2002): Germany boosts biogas from new sewage treatment plant. URL [Accessed: 06.08.2010]