Microwave-assisted pyrolysis is used to produce biochar from oil palm waste. This method results in biochar with favorable properties, including higher surface area, greater porosity, lower moisture and ash content, and higher carbon content compared to conventional methods.The produced biochar has a range of applications, including H2S separation, wastewater treatment (such as dyes adsorption), and hazardous landfill leachate treatment. Biochar also serves as a fuel source for power generation.The structural properties of biochars produced from microwave pyrolysis make them suitable for various applications, and they have high adsorption capacity and comparable heating values (HHV) with conventional sub-bituminous coal. They burn stably and produce lower CO and NOx emissions.