A bike-powered poop pump is redefining low-cost sanitation, April 2011, by Robert Goodier, Engineering for Change.
Meet the next generation of bicycle-powered devices for developing countries: a pit latrine pump. It’s the offspring of locally available parts—a bucket, a hose, a bicycle—and a modified bike-powered corn sheller, which is itself a field-tested time saver. The pump is still in testing, But so far, it seems to represent the kind of inventiveness and repurposing of parts needed to achieve extreme affordability. The brains behind it are a team of MIT engineers and business students who formed Sanergy, an organization working to redefine low-cost sanitation.