Preparation of biochar and application of biochar in thallium-containing wastewater

The invention discloses preparation of biochar and application of the biochar in thallium-containing wastewater. The biochar is prepared by taking one of bagasse, pomelo peel or banana peel as a material, cleaning, removing impurities, drying, grinding, crushing, carrying out anaerobic pyrolytic reaction on biomass powder, and cooling. The invention also provides an application of the biochar in thallium-containing wastewater, which comprises the following steps: adjusting the pH value of the thallium-containing industrial wastewater to 7-9, adjusting the temperature of the wastewater to 20-35 DEG C, and finally adding the biochar to adsorb thallium ions in the wastewater; wherein in parts by mass, the ratio of thallium in the wastewater to the biochar is 1: 150. The biochar has excellent adsorption performance on thallium ions in thallium-containing industrial wastewater, and the preparation method is simple and convenient to operate, simple in equipment and low in cost. 本发明公开了生物炭的制备及其在含铊废水中的应用。所述生物炭是以甘蔗渣、柚子