Enhanced activation of ultrasonic pre-treated softwood biochar for efficient heavy metal removal from water

Physical and chemical modification on biochar is an interesting approach to enhance the properties make them potential candidates in adsorption of heavy metals from water. Studies have shown that ultrasound treatments as well alkali activations has positive impact behaviour material. Base activation derived pre-treated woodchips were studied understand influence pre-treatment emerged it. 40 170 kHz softwood subjected laboratory scale pyrolysis resulted biochars treated with NaOH. The physicochemical examined, experiments revealed assisted better capacity compared untreated samples after activation. sample exhibited equilibrium 19.99 mg/g which almost 22 times higher than corresponding non-activated sample. showed improved competitive towards copper ions comparison nickel or lead. overall study suggests combined enhances metal removal efficiency these engineered can be used effective adsorbent field wastewater treatment.