Improvement of anaerobic digestion performance by continuous nitrogen removal with a membrane contactor treating a substrate rich in ammonia and sulfide

Anaerobic Mesophilic Codigestion of Rice Straw and Chicken Manure: Effects of Organic Loading Rate on Process Stability and Performance

“…In order to prevent inhibition by ammonia, besides dilution, in situ removal of ammonia has been a research hotspot in recent years. The methods for ammonia removal include using hollow-fiber membrane reactors, adding adsorptive materials such as zeolite, immobilization of methanogens, and biogas recycle stripping [36][37][38][39]. Based on Eqs.…”

Recovery of ammonia from anaerobically digested manure using gas-permeable membranes

“…In the case of anaerobic digestion, the process can be applied inside a digester to remove ammonia without damaging the carbonaceous material and therefore improving the anaerobic process, as reported by Garcia-Gonzalez and Vanotti (2015). Other studies reported AD performance improvement in semi-batch experiments using GPMT to treat slaughterhouse waste (Lauterbock et al, 2014). Hence, if a large quantity of NH 3 is removed from digestate, the typical inhibition caused by this compound will be minimized, improving both AD and methane production.…”

Gas-Permeable Membrane Technology Coupled With Anaerobic Digestion for Swine Manure Treatment

“…Moreover, coupling gas-permeable membranes with AD could contribute to reduce potential NH 3 -mediated inhibitions of the acetoclastic methanogenic biomass, which would result in an enhanced methane production. The use of gas-permeable membrane technology in order to counteract the NH 3 inhibition in AD has been minimally studied (Lauterböck et al, 2012(Lauterböck et al, , 2014 and further research is needed. Lauterböck et al (2012) proposed the introduction of a membrane module inside AD reactors.…”