Plastic pollution is a global issue that significantly impacts the environment and human health. Plastic debris can come in all shapes and sizes, but those that are less than five millimeters in length are called “microplastics (MPs).” MPs can enter the oceans and lakes via wastewater treatment plants (WWTPs), thereby harming aquatic life. Biochar, as an inexpensive and green material, has gained interest for its potential use in treating and removing contaminants from wastewater. This study compared adsorption of MPs using the following biochar variants: 1) raw pine wood derived biochar, 2) four physically activated biochar prepared at different temperatures (550°C, 650°C, 750°C, and 850°C)3) iron-modified biochar (Fe-biochar), and 4) sand. The results of the adsorption test showed that Fe-biochar had the best performance among all materials, with adsorption capacity over 20 mg-MPs/g Fe-biochar.  Activated biochar at 850°C demonstrated the next best capacity approximate 4.55 mg-MPs/g 850-Biochar. These findings show that the negatively charged MP particles are highly attracted to Fe-biochar media, leading to high removal. Further column-based experiments are ongoing to evaluate continuous wastewater flow parameters on the modified biochar media.