“…Unwanted sulfide generation, overly salinity, and the existence of lignin components can all have a negative impact on the rate at which algae biogas is produced. However, by utilizing a range of pretreatment methods such as mechanical, thermal, microwave, enzymatic, and catalytic irradiation, the rate of biogas production can be boosted [ 33 ]. Current research focuses on using microalgae to improve biogas made from swine wastewater treated with AD.…”