In recent years, the paper industry is developing strongly and plays an important role in the industry of our country. Most of the factories have their own wastewater treatment systems. In general, wastewater in paper mill is very difficult to treat and to handle, especially color (Pt–Co) index. In this research, activated carbon with a high surface area and high adsorption capacity was prepared from corn stalks, an agricultural by-products. The suitable conditions of pyrolysis were investigated to prepare activated bio-char from corn stalk. Then, as-obtained carbon material was applied for color treatment of effluent from paper mill. The activated carbon showed high efficiency and capability in color removal of waste water, with the color reduction of 77%.

近年来，造纸工业发展强劲，在我国工业中占有重要地位。大多数工厂都有自己的废水处理系统。一般来说，造纸厂的废水很难处理和处理，尤其是颜色（Pt-Co）指数。在这项研究中，以农业副产品玉米秸秆为原料制备了具有高表面积和高吸附能力的活性炭。研究了热解的适宜条件，以玉米秸秆为原料制备活性生物炭。然后，将所获得的碳材料应用于造纸厂废水的颜色处理。活性炭在去除废水颜色方面表现出高效和能力，颜色减少了77％。