does anyone know ways to create energy from rice straws that isnt harmful for the environment ?

Good day everyone. I am currently on my undergraduate thesis using biomass gasification as my topic. We are currently looking for other ways to extract the tar from our synthetic gas samples. We tried to inquire for GCMS services around our area but their equipment either not functioning or cannot process synthetic gas. Can you guys recommend an easier way and doable for a student like me to extract tar content from our samples?