In-situ, self-adjusting stability control of methane-producing anaerobic biological reactors through novel use of ion exchange fibers. U.S. Patent No.10,399,877. Filed 25 September 2017, Issued 3 September 2019. Assignee:Lehigh University. Inventors: Arup K . SenGupta, Derick G. Brown, and Yu Tian.
If you are interested in details on the process, see our paper:
Tian, Y., SenGupta, A.K., and Brown, D.G. 2017. “In-situ stability control of energy-producing anaerobic biological reactors through novel use of ion exchange fibers.” ACS Sustainable Chemistry & Engineering. 5(10):9380-9389.