US 11,866,755 B1
Ferrous pebbles as a catalyst for enhanced methane generation from rice husk
Muhammad Aamir, Al-Ahsa (SA); and Muhammad Hassan, Al-Ahsa (SA)
Assigned to KING FAISAL UNIVERSITY, Al-Ahsa (SA)
Filed by KING FAISAL UNIVERSITY, Al-Ahsa (SA)
Filed on Aug. 23, 2023, as Appl. No. 18/237,027.
Int. Cl. C12P 5/02 (2006.01); C12M 1/107 (2006.01)
CPC C12P 5/023 (2013.01) [C12M 21/04 (2013.01)] 20 Claims
 
1. A system for enhancing methane generation in biogas production, the system comprising:
a semi-continuous stirring tank reactor comprising a feedstock inlet, a feedstock outlet, a water jacket inlet, a water jacket outlet, a motor, a gear box, a stirrer, a plurality of stirrer blades, and a plurality of porous linen pouches having a plurality of ferrous pebbles disposed therein, one of each of the plurality of porous linen pouches attached to one of each of the plurality of stirrer blades;
the semi-continuous stirring tank reactor configured to receive and incubate cow manure and glucose to form waste activated sludge with methanogen growth;
the feedstock inlet configured to feed rice husk and water to the semi-continuous stirring tank reactor;
the feedstock outlet configured to discharge rice husk, water, and waste activated sludge from the semi-continuous stirring tank reactor;
the water jacket inlet and water jacket outlet configured to accept flowing water to heat the semi-continuous stirring tank reactor to a mesophilic condition;
the motor is connected to the gearbox, stirrer, and the plurality of stirrer blades; and the motor is connected to an a circuit which operates the motor.