摘要
以天然凹凸棒石为基材,采用锆盐和酸热处理对其复配改性,成功制备出同步去除氮磷的Zr-ATP/HR-ATP复合吸附剂。通过XRD、SEM、FT-IR对合成材料进行表征,并研究了煅烧温度、粘结剂和造孔剂添加量对吸附剂成型的影响。结果表明:12 hZr-ATP和HR-ATP1:1复合制备成型,经600℃煅烧2 h散失率为0.46%,抗压强度为16 N/片,对氮(10 mg/L)磷(20 mg/L)的饱和吸附量分别为4.20和8.02 mg/g。XRD结果表明,复合前后吸附剂物相组成未发生变化;SEM形貌显示,Zr-ATP和HR-ATP紧密黏附,复合材料疏松多孔。该复合吸附剂可应用于富营养化水体中的氮磷同步去除。
Zr-ATP/HR-ATP composite adsorbent for simultaneous removal of nitrogen and phosphorus was successfully prepared by modifying natural attapulgite with zirconium salt and acid heat treatment.The synthesized materials were characterized by XRD,SEM and FT-IR,and the effects of calcination temperature,the amount of binder and pore-forming agent on the formation of adsorbent were studied.The results show that 12 h Zr-ATP and HR-ATP1:1 was prepared with a composite preparation molding method and calcined at 600℃for 2 h.The loss rate was 0.46%,compressive strength was 16N/piece,and the saturated adsorption capacity of nitrogen(10 mg/L)and phosphorus(20 mg/L)were 4.20 mg/g and 8.02 mg/g.The X-ray results showed that the phase composition of the adsorbent did not change.SEM images showed that Zr-ATP and HR-ATP adhered tightly and the composites were porous.The composite adsorbent can be applied to simultaneous removal of nitrogen and phosphorus in eutrophic water.
作者
张建民
侯旦旦
李红玑
ZHANG Jianmin;HOU Dandan;LI Hongji(College of Town Planning and Municipal Engineering,Xi'an Polytechnic University,Xi'an 710048,China)
出处
《功能材料》
CAS
CSCD
北大核心
2023年第5期5154-5159,共6页
Journal of Functional Materials
基金
国家自然科学基金项目(21573171)
中国陕西省重点研发计划(2021SF-438)
中国陕西省自然科学基金项目(No.17JK0327)
西安理工大学博士研究启动基金(BS201932)
中国普通大学研究生研究与创新培训项目(201910709028)
中国陕西省普通大学研究生研究与创新培训项目(S202110709063)。
关键词
凹凸棒石
复配改性
强度
吸附
氮磷
attapulgite
compound modification
strength
adsorption
nitrogen phosphorus
