改性玉米芯生物炭的制备及其在废水中的应用

Preparation of Phosphate Modified Corn Cob Biochar and Its Adsorption on Wastewater

生物炭具备独特的多孔结构和丰富的表官能团,为废水处理、土壤改良、农作物增收、环境修复等提供一类有效的技术材料。本文选取玉米芯为实验材料,采用高浓度磷酸浸泡活化制备玉米芯生物炭,用碘值确定生物炭的最佳制备工艺条件,最后通过扫描电镜(SEM)、X射线衍射(XRD)对最佳制备条件的生物炭进行性能表征分析,并将制备的生物炭去处理模拟废水中氨氮,结果表明:污水中投加改性后的生物炭对氨氮的去除具有良好的处理效果。

Due to its unique porpus structure and rich surface functional groups,the biochar was served as an effective technical material for soil improvement,crop yield increase and environmental restoration.selecting corn cob as experimental materials,the use of high concentration of phosphoric acid soak activated,biochar,preparation of cod with iodine value determine the optimum preparation conditions of biochar,at last,by scanning electron microscope(SEM),X-ray diffraction(XRD)on the best preparation conditions,analyzing performance characterization of activated carbon,the cod,biochar samples after preparation of cod in ammonia nitrogen waste water were applied to explore its ammonia nitrogen removal efficiency.The results showed that the addition of biochar had a good treatment effect on the removal of ammonia nitrogen elements.