[ Objective ] We aimed to study the preparation methods of impurely irrigated soil adsorbent from beaches, as well as its ability to absorb phenol. [ Method] Using hydrochloric acid as activator, we compared the influences of various soil adsorbents on the adsorption of phenol through the desired orthogonal tests where the addition of saw dust, concentration of hydrochloric acid, liquid-solid ratio and carbonization temperature varied. Afterwards, we characterized this soil adsorbent. [ Result] For the soil adsorbent made under the optimal conditions, that is, addition of saw dust was 20% , concentration of HC1 was 1 mol/L, the ratio of liquid to solid was 2:1, carbonization temperature was 500 ℃ , and activation time was one hour, the absorption efficiency of phenol in water by the prepared soil adsorbent reached above 90% . Characterization showed that the prepared soil adsorbent changed greatly in the structure, that is, soil pore and carbon content increased obviously, as well as its adsorption efficiency. [Conclusion] The prepared soil adsorbent by this method greatly improved the absorption efficiency of phenol in water, which provided a novel method for the reasonable utilization of saw dust, with good prospects.%[目的]研究滩涂污灌土壤吸附剂的制备方法及对苯酚的吸附效果.[方法]采用盐酸作为活化剂,通过正交试验比较在不同木屑加入量、盐酸浓度、液固比、碳化温度下制备的吸附剂,对水中苯酚吸附效果的影响,并对其进行表征.[结果]在木屑加入量为20％,经1mol/L的盐酸按液固比2∶1浸泡处理滩涂污灌土壤后,在500℃下碳化1h后,制备的土壤吸附剂对水溶液中苯酚的吸附效率可达90％以上.表征结果显示,制备的污灌土壤吸附剂结构发生了明显变化,土壤孔隙和碳含量明显增大,吸附效率显著提高.[结论]制备的土壤吸附剂大大提高了水溶液中苯酚的吸附效率,为木屑的资源化利用探索了新的方法,具有良好的应用前景.
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