13X沸石分子筛吸附水体中氮磷的研究

Adsorption of Nitrogen and Phosphorus in Water by 13X Molecular Sieve Prepared from Halloysite

随着环境污染问题的日益严重,水体富营养化对环境造成了严重污染。13X型沸石分子筛由于独特的多级孔道结构,具有优异的吸附性能、离子交换性能,在催化、绿色能源、环境等领域具有巨大的应用潜力。采用矿物基埃洛石所制备的13X分子筛为吸附剂,应用于水体中氮和磷的吸附与交换研究,考察了分子筛吸附剂的加入量、粒径、溶液的酸碱性、吸附时间和吸附温度等对水体中氮和磷吸附和交换的影响。结果表明,13X型沸石分子筛对氨氮的最大去除率可达93.23%,对磷的最大去除率为98.20%。

With the increasingly serious problem of environmental pollution,water eutrophication has occurred one after another in various water bodies,leading to the outbreak of cyanobacteria,causing serious pollution to the environment.Because of its unique multi-stage pore structure,13X zeolite has excellent adsorption performance and ion exchange performance.It has great application potential in the fields of catalysis,green energy,environment and so on.In this paper,the 13X molecular sieve prepared by the mineral kyeloite was used as adsorbent to study the adsorption and exchange of nitrogen and phosphorus in water.The effects of the amount of molecular sieve adsorbent,particle size,acidity and alkalinity of solution,adsorption time and adsorption temperature on the adsorption and exchange of nitrogen and phosphorus in water were investigated.The results showed that the maximum removal rate of ammonia nitrogen and phosphorus by 13X zeolite molecular sieve was 93.23%and 98.20%respectively.