A long-term study on the effect of magnetite supplementation in continuous anaerobic digestion of dairy effluent – Enhancement in process performance and stability

•A long-term study on the effect of magnetite in continuous biomethanation was made.•Magnetite supplementation was beneficial to the continuous biomethanation of whey.•Methane production and process stability were improved with magnetite addition.•DIET via conductive magnetite likely contributed to...

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