Editorial: Algal technologies for wastewater treatment and resource recovery

Over 80% of the globally produced wastewater receives none or hardly any treatment before it is disposed into the environment (WWAP ). Therefore, it is urgent to develop new wastewater treatment technologies that are sustainable in the broad sense of the word, i.e. not only produce high quality effluents, but also minimise energy expenses, recover energy and nutrients, and apply technology that is appropriate in relation to the availability of skilled personnel.