基于不同质量牡蛎壳改性的花生壳生物炭吸附磷研究

由于过量磷肥的施用、大量含磷生活、工业废水的排放,水体富营养化现象日益严重,需要经济有效的方式去除磷元素。而牡蛎壳和花生壳均为生物质废弃物,可通过二次利用来制备牡蛎壳改性花生壳生物炭。采用添加牡蛎壳的方法对花生壳生物炭进行了改性实验,探讨了不同牡蛎壳对花生壳生物炭吸附磷效能的影响。结果表明:牡蛎壳改性的花生壳生物炭显著提高了对磷的吸附效果,而且牡蛎壳与花生壳质量之比越大,改性后的花生壳生物炭对水体中磷的吸附量也越增大。

Study on Modification Methods of Peanut Shell Biochar Modified by Oyster Shell

Due to the application of excessive phosphorus fertilizer and the discharge of a large amount of phosphorus-containing domestic and industrial wastewater,the eutrophication of nature water body is becoming more and more serious.Hence,an economical and effective methods of phosphorus removal are urgently needed.Oyster shell and peanut shell are both biomass wastes,and peanut shell biochar modified by oyster shell can be prepared by secondary utilization.In this experiment,peanut shell biochar modified by different quality of oyster shell was prepared to explore the effect of different quality of oyster shells on its phosphorus adsorption efficiency.The experimental results showed that the phosphorus adsorption efficiency of peanut shell biochar modified oyster shell was significantly improved.The greater the mass ratio of oyster shell to peanut shell,the higher the adsorption capacity of peanut shell biochar modified by oyster shell.