本研究旨在开发一种高效、环保的吸附材料,用于矿区沉陷水体中铜离子的去除。通过利用煤矸石中的硅铝资源,成功制备了Na-X型沸石,并对其在矿区沉陷水体中对铜离子的吸附性能进行了系统研究。首先,通过优化煤矸石的预处理工艺和沸石的合...本研究旨在开发一种高效、环保的吸附材料,用于矿区沉陷水体中铜离子的去除。通过利用煤矸石中的硅铝资源,成功制备了Na-X型沸石,并对其在矿区沉陷水体中对铜离子的吸附性能进行了系统研究。首先,通过优化煤矸石的预处理工艺和沸石的合成条件,得到了具有高结晶度和良好孔结构的Na-X型沸石。随后,采用批量吸附实验,考察了初始铜离子浓度、吸附剂用量、pH值和温度等因素对吸附性能的影响。结果表明,Na-X型沸石对铜离子表现出优异的吸附能力,在20~100 mg/L的浓度范围内对煤矸石基Na-X沸石进行性能评价。在初始浓度低于40 mg/L的低浓度铜溶液中Na-X型沸石进行吸附,随铜溶液初始浓度的增加,其吸附量逐渐增大;在浓度高于60 mg/L时Na-X型沸石基本达到最大吸附量203.97 mg/g。当初始同浓度低于30 mg/g时,对废水中铜的去除率均可达到98.9%以上。同时随着溶液pH的增大,Na-X沸石对铜吸附能力越强。在pH为5.15时,铜吸附性能达到最大值188.92 mg/g。在pH为4~5.15时,Na-X的铜吸附性能在170 mg/g以上,说明在此pH范围内Na-X沸石的性能较为稳定。此外,通过XRD、FTIR和SEM等表征手段,揭示了吸附过程中铜离子与沸石之间的相互作用机制。本研究不仅为煤矸石的资源化利用提供了新途径,也为矿区沉陷水体的治理提供了有效的技术支持。The aim of this study is to develop an efficient and environmentally friendly adsorbent material for the removal of copper ions from mine subsidence waters. By utilizing the silica-aluminum resources in the coal gangue, Na-X-type zeolite was successfully prepared, and its adsorption performance for copper ions in the mine subsidence waters was systematically studied. Firstly, by optimizing the pretreatment process of gangue and the synthesis conditions of zeolite, Na-X-type zeolite with high crystallinity and good pore structure was obtained. Subsequently, batch adsorption experiments were used to investigate the effects of initial copper ion concentration, adsorbent dosage, pH value and temperature on the adsorption performance. The results showed that the Na-X-type zeolite exhibited excellent adsorption capacity for copper ions, and the performance of gangue-based Na-X zeolite was evaluated in the concentration range of 20~100 mg/L. The results showed that the adsorption capacity of Na-X-type zeolite for copper ions was excellent. Na-X zeolite adsorbed in low concentration copper solution with initial concentration lower than 40 mg/L, and its adsorption amount gradually increased with the increase of initial concentration of copper solution;Na-X zeolite basically reached the maximum adsorption amount of 203.97 mg/g when the concentration was higher than 60 mg/L. When the initial concentration of the same was lower than 30 mg/g, the removal rate of copper in the wastewater could reach more than 98.9%. Meanwhile, with the increase of solution pH, the stronger the copper adsorption capacity of Na-X zeolite. At pH 5.15, the copper adsorption performance reached the maximum value of 188.92 mg/g. At pH 4~5.15, the copper adsorption performance of Na-X was above 170 mg/g, which indicated that the performance of Na-X zeolite was more stable in this pH range. In addition, the interaction mechanism between copper ions and zeolite during the adsorption process was revealed by characterization means such as XRD, FTIR and SEM. This study not only provides a new way for the resource utilization of coal gangue, but also provides an effective technical support for the management of mine subsidence waters.展开更多
本文研究了以煤矸石和铝灰为主要原料合成沸石分子筛,并探讨了该分子筛对水中孔雀石绿(MG)的吸附性能。煤矸石和铝灰中含有丰富的二氧化硅和氧化铝,是合成分子筛的理想材料。通过水热法合成的NaP型分子筛表现出良好的结晶度和均匀的球...本文研究了以煤矸石和铝灰为主要原料合成沸石分子筛,并探讨了该分子筛对水中孔雀石绿(MG)的吸附性能。煤矸石和铝灰中含有丰富的二氧化硅和氧化铝,是合成分子筛的理想材料。通过水热法合成的NaP型分子筛表现出良好的结晶度和均匀的球状颗粒形貌。实验表明,分子筛对MG的吸附受分子筛用量、搅拌时间的影响。在吸附动力学研究中,拟二级动力学模型比拟一级模型更适合描述MG的吸附过程,表明该过程主要为化学吸附。此外,颗粒内扩散也对吸附起到了一定作用。这一研究为固体废弃物的资源化利用提供了新的思路,同时也为水体污染治理提供了潜在的解决方案。In this paper, zeolite molecular sieve was synthesized from coal gangue and aluminum ash, and the adsorption performance of the zeolite to malachite green (MG) in water was investigated. Coal gangue and aluminum ash contain rich silica and alumina and are ideal materials for synthesis of molecular sieves. NaP molecular sieves synthesized by hydrothermal method showed good crystallinity and uniform spherical particle morphology. The results showed that the adsorption of MG by molecular sieve was significantly affected by the amount of molecular sieve and the stirring time. In the study of adsorption kinetics, the pseudo-second-order kinetic model is more suitable to describe the adsorption process of MG than the first-order model, indicating that the process is mainly chemisorption. In addition, intra-particle diffusion also plays a role in adsorption. This research provides a new idea for the resource utilization of solid waste, and also provides a potential solution for water pollution control.展开更多
臭氧作为一种高效且环保的氧化剂,在水处理、空气净化、医疗消毒等多个领域发挥着重要作用。传统的管式臭氧发生技术存在效率不高、稳定性差、运营成本高等缺点,限制了其在更广泛领域的应用。针对这些问题,本文重点介绍了一种新型的板...臭氧作为一种高效且环保的氧化剂,在水处理、空气净化、医疗消毒等多个领域发挥着重要作用。传统的管式臭氧发生技术存在效率不高、稳定性差、运营成本高等缺点,限制了其在更广泛领域的应用。针对这些问题,本文重点介绍了一种新型的板式臭氧发生器,该技术以其高效率、高稳定性和低运营成本等优势,在水处理行业中展现出卓越的性能。本文首先综述了臭氧的基本特性及其在水处理中的应用背景,然后详细阐述了板式臭氧发生器的工作原理、技术特点。此外,本文还探讨了板式臭氧发生器在工业废水处理、市政污水回用、饮用水深度净化等多个领域的应用实例,并对其市场前景和发展趋势进行了分析预测。最后,本文总结了板式臭氧发生器的优越性,并对其在水处理行业的应用潜力进行了展望。As an efficient and environmentally friendly oxidant, ozone plays a significant role in various fields such as water treatment, air purification, and medical disinfection. Traditional ozone generation technologies suffer from drawbacks such as low efficiency, poor stability, and high operational costs, which limit their broader application. This paper focuses on introducing a new type of plate-type ozone generator, which demonstrates excellent performance in the water treatment industry with its advantages of high efficiency, high stability, and low operational costs. The paper begins with a review of the basic properties of ozone and its application background in water treatment, then elaborates on the working principle and technical features of the plate-type ozone generator. Furthermore, the paper explores application examples of the plate-type ozone generator in industrial wastewater treatment, municipal sewage reuse, and deep purification of drinking water, and analyzes and forecasts its market prospects and development trends. Finally, the paper summarizes the advantages of the plate-type ozone generator and looks forward to its application potential in the water treatment industry.展开更多
文摘本研究旨在开发一种高效、环保的吸附材料,用于矿区沉陷水体中铜离子的去除。通过利用煤矸石中的硅铝资源,成功制备了Na-X型沸石,并对其在矿区沉陷水体中对铜离子的吸附性能进行了系统研究。首先,通过优化煤矸石的预处理工艺和沸石的合成条件,得到了具有高结晶度和良好孔结构的Na-X型沸石。随后,采用批量吸附实验,考察了初始铜离子浓度、吸附剂用量、pH值和温度等因素对吸附性能的影响。结果表明,Na-X型沸石对铜离子表现出优异的吸附能力,在20~100 mg/L的浓度范围内对煤矸石基Na-X沸石进行性能评价。在初始浓度低于40 mg/L的低浓度铜溶液中Na-X型沸石进行吸附,随铜溶液初始浓度的增加,其吸附量逐渐增大;在浓度高于60 mg/L时Na-X型沸石基本达到最大吸附量203.97 mg/g。当初始同浓度低于30 mg/g时,对废水中铜的去除率均可达到98.9%以上。同时随着溶液pH的增大,Na-X沸石对铜吸附能力越强。在pH为5.15时,铜吸附性能达到最大值188.92 mg/g。在pH为4~5.15时,Na-X的铜吸附性能在170 mg/g以上,说明在此pH范围内Na-X沸石的性能较为稳定。此外,通过XRD、FTIR和SEM等表征手段,揭示了吸附过程中铜离子与沸石之间的相互作用机制。本研究不仅为煤矸石的资源化利用提供了新途径,也为矿区沉陷水体的治理提供了有效的技术支持。The aim of this study is to develop an efficient and environmentally friendly adsorbent material for the removal of copper ions from mine subsidence waters. By utilizing the silica-aluminum resources in the coal gangue, Na-X-type zeolite was successfully prepared, and its adsorption performance for copper ions in the mine subsidence waters was systematically studied. Firstly, by optimizing the pretreatment process of gangue and the synthesis conditions of zeolite, Na-X-type zeolite with high crystallinity and good pore structure was obtained. Subsequently, batch adsorption experiments were used to investigate the effects of initial copper ion concentration, adsorbent dosage, pH value and temperature on the adsorption performance. The results showed that the Na-X-type zeolite exhibited excellent adsorption capacity for copper ions, and the performance of gangue-based Na-X zeolite was evaluated in the concentration range of 20~100 mg/L. The results showed that the adsorption capacity of Na-X-type zeolite for copper ions was excellent. Na-X zeolite adsorbed in low concentration copper solution with initial concentration lower than 40 mg/L, and its adsorption amount gradually increased with the increase of initial concentration of copper solution;Na-X zeolite basically reached the maximum adsorption amount of 203.97 mg/g when the concentration was higher than 60 mg/L. When the initial concentration of the same was lower than 30 mg/g, the removal rate of copper in the wastewater could reach more than 98.9%. Meanwhile, with the increase of solution pH, the stronger the copper adsorption capacity of Na-X zeolite. At pH 5.15, the copper adsorption performance reached the maximum value of 188.92 mg/g. At pH 4~5.15, the copper adsorption performance of Na-X was above 170 mg/g, which indicated that the performance of Na-X zeolite was more stable in this pH range. In addition, the interaction mechanism between copper ions and zeolite during the adsorption process was revealed by characterization means such as XRD, FTIR and SEM. This study not only provides a new way for the resource utilization of coal gangue, but also provides an effective technical support for the management of mine subsidence waters.
文摘本文研究了以煤矸石和铝灰为主要原料合成沸石分子筛,并探讨了该分子筛对水中孔雀石绿(MG)的吸附性能。煤矸石和铝灰中含有丰富的二氧化硅和氧化铝,是合成分子筛的理想材料。通过水热法合成的NaP型分子筛表现出良好的结晶度和均匀的球状颗粒形貌。实验表明,分子筛对MG的吸附受分子筛用量、搅拌时间的影响。在吸附动力学研究中,拟二级动力学模型比拟一级模型更适合描述MG的吸附过程,表明该过程主要为化学吸附。此外,颗粒内扩散也对吸附起到了一定作用。这一研究为固体废弃物的资源化利用提供了新的思路,同时也为水体污染治理提供了潜在的解决方案。In this paper, zeolite molecular sieve was synthesized from coal gangue and aluminum ash, and the adsorption performance of the zeolite to malachite green (MG) in water was investigated. Coal gangue and aluminum ash contain rich silica and alumina and are ideal materials for synthesis of molecular sieves. NaP molecular sieves synthesized by hydrothermal method showed good crystallinity and uniform spherical particle morphology. The results showed that the adsorption of MG by molecular sieve was significantly affected by the amount of molecular sieve and the stirring time. In the study of adsorption kinetics, the pseudo-second-order kinetic model is more suitable to describe the adsorption process of MG than the first-order model, indicating that the process is mainly chemisorption. In addition, intra-particle diffusion also plays a role in adsorption. This research provides a new idea for the resource utilization of solid waste, and also provides a potential solution for water pollution control.
文摘臭氧作为一种高效且环保的氧化剂,在水处理、空气净化、医疗消毒等多个领域发挥着重要作用。传统的管式臭氧发生技术存在效率不高、稳定性差、运营成本高等缺点,限制了其在更广泛领域的应用。针对这些问题,本文重点介绍了一种新型的板式臭氧发生器,该技术以其高效率、高稳定性和低运营成本等优势,在水处理行业中展现出卓越的性能。本文首先综述了臭氧的基本特性及其在水处理中的应用背景,然后详细阐述了板式臭氧发生器的工作原理、技术特点。此外,本文还探讨了板式臭氧发生器在工业废水处理、市政污水回用、饮用水深度净化等多个领域的应用实例,并对其市场前景和发展趋势进行了分析预测。最后,本文总结了板式臭氧发生器的优越性,并对其在水处理行业的应用潜力进行了展望。As an efficient and environmentally friendly oxidant, ozone plays a significant role in various fields such as water treatment, air purification, and medical disinfection. Traditional ozone generation technologies suffer from drawbacks such as low efficiency, poor stability, and high operational costs, which limit their broader application. This paper focuses on introducing a new type of plate-type ozone generator, which demonstrates excellent performance in the water treatment industry with its advantages of high efficiency, high stability, and low operational costs. The paper begins with a review of the basic properties of ozone and its application background in water treatment, then elaborates on the working principle and technical features of the plate-type ozone generator. Furthermore, the paper explores application examples of the plate-type ozone generator in industrial wastewater treatment, municipal sewage reuse, and deep purification of drinking water, and analyzes and forecasts its market prospects and development trends. Finally, the paper summarizes the advantages of the plate-type ozone generator and looks forward to its application potential in the water treatment industry.
