Neiker shows algae production can boost biogas GHG performance

In Spain, Neiker-Tecnalia has demonstrated that Chlamydomonas acidophila microalgae can be successfully used to absorb ammoniacal nitrogen produced in effluent from anaerobic digestion of organic waste. By co-producing algae with biogas, the ammonium can be absorbed instead of released into the atmosphere, while the resulting algae can then also be used as a biogas feedstock, an animal feed, compost or even lutein.