作者:梁帆帆 ，苏倩 ，马荣 ，刘云根
Authors:LIANG Fan-fan , SU Qian , MA Rong , LIU Yun-gen 摘要:摘要:以香蒲污泥基生物炭和聚乙烯制备结构生物炭为吸附剂，KH₂PO₄和NH₄Cl为吸附质，研究结构生物炭的制备及对水体中氮磷的吸附性能。采用单因素实验法，筛选结构生物炭的最佳参数，并对其进行表征。研究结果表明：采用60 %施胶量、5 N·cm^-2 成型压力、160℃成型温度、95 min成型时间制备结构生物炭；结构生物炭对氮磷的吸附符合Langmuir模型，为单分子层吸附，对磷的亲和力比氮高，且氮磷在结构生物炭上的吸附是自发的有利的；结构生物炭较香蒲污泥基生物炭，提高结构生物炭的疏水性和稳定性，其表面颗粒结合紧密，对氮磷的吸附机制可归因为孔隙填充、静电吸附、氢键结合。
Abstract:Abstract: Using cattail-sludge biochar and polyethylene to prepare structured biochar as adsorbents, KH₂PO₄ and NH₄Cl as adsorbents, the preparation of structured biochar and its adsorption performance to nitrogen and phosphorus in water were studied. The single factor experiment method was used to screen and characterize the optimal parameters of structural biochar. The research results show that: structured biochar is prepared with 60% sizing amount, 5 N·cm^-2 molding pressure, 160℃ molding temperature, and 95 min molding time; the adsorption of nitrogen and phosphorus by the structured biochar conforms to the Langmuir model, which is simple Molecular layer adsorption, has higher affinity for phosphorus than nitrogen, and the adsorption of nitrogen and phosphorus on structural biochar is spontaneously beneficial; structural biochar is better than cattail-sludge biochar, which improves the hydrophobicity and stability of structural biochar. The surface particles are tightly bound, and the adsorption mechanism of nitrogen and phosphorus can be attributed to pore filling, electrostatic adsorption, and hydrogen bonding.


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