EFFECT OF PYROLYSIS TEMPERATURE ON BIOCHAR TO REDUCE CADMIUM (CD) CONCENTRATION IN IMPACTED LAPINDO MUD SOIL IN SIDOARJO, EAST JAVARUSLAN WIROSOEDARMO, AULIA NUR MUSTAQIMAN, FAUZANA MAULIDA NURAHMA AND KIKI GUSTINASARIAbstract This study aims to reduce the content of Cd heavy metals in the soil and to reduce agricultural waste in order to be more useful. The materials for making biochar in this study were corn cobs and rice husks made with temperatures of 500 °C, 600 °C, and 700 °C with pyrolysis using a furnace for 45 minutes which would then be mixed with metal cd contaminated the soil with a ratio of 1:10. The parameters observed were pH, temperature, water content, C-organic content, and Cd content in the soil. The difference in biochar making temperature affects the decrease in cadmium (Cd) heavy metal content of 7.35% - 11.45% for biochar made with raw materials of Corn Cobs and 9.9% - 13.58% for raw materials of husk rice. Biochar made from rice husks and corn cobs can increase soil temperature by 5.82% - 10%, acid soil pH of 7.3% - 12.65%, low soil moisture content of 15.49% - 21.42%, and increase the C-Organic content in the soil by 9.9% - 18.81%. Biochar which is made using rice husks improves soil quality slightly better than corn cobs. |