中文摘要：

研究改性生物质材料——香菇培养基废料对水溶液中重金属铜离子的吸附性能。结果表明:改性可以大大提高香菇培养基废料的吸附性能,其铜离子去除率高达95%以上;与天然香菇培养基废料相比,改性后吸附材料的比表面积和电负性增大,表面官能团数目及种类增多。在吸附0.75 h后,改性香菇培养基废料对铜离子的吸附达到平衡,该吸附过程是一个放热反应。改性香菇培养基废料吸附铜离子前后的扫描电镜和能谱分析表明,吸附铜离子的材料表面可明显看到孔隙被占据,且铜含量明显增加,而钠含量减少。

英文摘要：

Cu2+ adsorption from simulated aqueous solution was investigated using a modified spent shiitake substrate (MSSS). The results showed that the MSSS has a high adsorption efficiency and removal performance. The Cu2+removal rate of the MSSS reached above 95%. Compared with spent shiitake substrate (SSS), the specific surface area, electronegativity and surface functional groups of the MSSS were all improved, resulting in a high adsorption capacity. The Cu2+ adsorption of MSSS reached equilibrium after 0.75 h and was an exothermic reaction. The SEM and EDS analyses of the MSSS before and after Cu2+ adsorption showed that the pores on the surface of the MSSS were occupied after adsorption and the Cu content increased but the Na content decreased.