摘要
随着水体磷污染问题日益严重,寻找高效且经济的除磷材料成为环境工程领域的重要研究方向。针对现有除磷材料存在的吸附容量有限、成本高昂等问题,以提高吸附容量和降低成本为目的,以除磷吸附容量和除磷药剂成本为响应值,采用Box-Behnken双响应面法对Mg/Al层状双金属氢氧化物(Mg/Al LDH)的水热制备进行了优化。经过单因素及双响应面优化试验得到Mg/Al LDH的最佳水热制备条件为Mg/Al摩尔比1.52,水热pH 9.28,老化温度112.69℃,Mg/Al LDH实际磷吸附容量为47.13 mg/g,除磷药剂成本为0.059元/g。优化后的Mg/Al LDH在除磷方面具有较高的吸附性能和经济性,为污水中磷的去除提供了有效的技术支持和参考,同时为环境工程领域的材料开发和制备工艺优化提供了新的视角。
With the increasingly serious problem of phosphorus pollution in water bodies,the search for efficient and economical phosphorus removal materials has become an important direction in the field of environmental engineering.Aiming at the limited adsorption capacity and high cost of the existing phosphorus removal materials,in order to improve the adsorption capacity and reducing the cost,this paper optimized the hydrothermal preparation of Mg/Al layered bimetallic hydroxide(Mg/Al LDH,a phosphorus removal adsorbent)by Box-Behnken double response surface method using the phosphorus adsorption capacity and the cost of phosphorus removing chemicals as the response values.The optimum hydrothermal preparation conditions of Mg/Al LDH were obtained after one-factor and two-response surface optimization tests as Mg/Al molar ratio of 1.52,hydrothermal pH of 9.28,aging temperature of 112.69℃.At the optimal preparation condition,the phosphorus adsorption capacity of Mg/Al LDH and the cost of the phosphorus removal agent were 47.13 mg/g and 0.059 yuan/g,respectively.The optimized Mg/Al LDH has high adsorption performance and economy in phosphorus removal,which provides effective technical support and reference for phosphorus removal from sewage.At the same time,the results of this study provides a new perspective for the development of materials and optimization of the preparation process in the field of environmental engineering and this.
作者
万立国
左彦鑫
赵茜
张丽君
肖本益
WAN Liguo;ZUO Yanxin;ZHAO Qian;ZHANG Lijun;XIAO Benyi(School of Water Conservancy&Environment Engineering,Changchun Institute of Technology,Changchun 130012,China;Jilin Provincial Key Laboratory of Municipal Wastewater Treatment,Changchun Institute of Technology,Changchun 130012,China;Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China;School of Hydraulic Engineering,Changchun Institute of Technology,Changchun 130012,China)
出处
《应用化工》
北大核心
2025年第11期2809-2814,2824,共7页
Applied Chemical Industry
基金
国家重点研发计划(2022YFC3203303)
吉林省科技发展计划项目(20230203006SF)
吉林省教育厅科学技术研究项目(JJKH20220642KJ)。
关键词
Mg/Al
LDH
双响应面
磷吸附容量
除磷药剂成本
水热制备
Mg/Al LDH
dual response surface
phosphorus adsorption capacity
phosphorus removal chemicals cost
hydrothermal preparation
