Alkaline solutions resulting from extracting sulfide from hydrocarbon fluids can be treated in a combination of one or more electrodialysis cells and a bioreactor. A transistor element is formed in the silicon layer of the SOI substrate. The inkjet recording apparatus includes a control unit configured, based on an amount of gas in the flow path forming member before the ink is filled in the ink flow path, and an amount of gas in equilibrium in the flow path forming member after the ink is filled in the ink flow path, to control the operation of the suction unit.