【摘要】 将柚皮洗涤干燥后经过水热活化去除生物油,再加入ZnSO₄进行二次水热反应,产品干燥后于管式石英炉中,在氮气气氛下热解,最后得到片层结构的氧化锌复合生物炭。Langmuir吸附等温模型计算得到其最大吸附量可达222.22 mg·g^-1。将其用于土壤中钝化Cu（Ⅱ）,以DTPA提取土壤中Cu（Ⅱ）计算其生物可利用态,结果表明:不同污染程度的土壤中添加ZnO/生物炭后,Cu（Ⅱ）的生物可利用态都有了显著地降低,表明污染毒性降低。更多还原

【Abstract】 After washing and drying, the pomelo peel was hydrothermally activated to remove its bio-oil, then ZnSO₄ was added in for hydrothermal reaction. After dried and pyrolyzed in a tubular quartz furnace under nitrogen atmosphere, the ZnO/biochar composite with sheet structure was obtained. The maximum adsorption capacity of ZnO/biochar for Cu（Ⅱ） was 222.22 mg·g^-1. The bioavailability of Cu（Ⅱ） was evaluated by DTPA extracting. The experimental results showed that the bioavailability of Cu（Ⅱ）decreased significantly after adding ZnO/biochar to soil with different pollution levels. It indicated that ZnO/biochar could effectively remove the pollution and hazard of Cu（Ⅱ） from soils.更多还原