Can saving the planet's freshwater be profitable? Most certainly, says Manoj Jain, investment director at Unison Capital.

"The material recovery conversion of waste and plastic into fuel, desulfurizing the air, the flue-gases, all this is very profitable business," he said at a GZERO Live event organized by the Sustainability Leaders Council, a partnership between Eurasia Group, GZERO Media, and Suntory.