Effect of CeO2 on the preparation of functional ceramsite and the adsorption effect of ammonia-nitrogen wastewater treatment

IF 5.1 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2024-09-26 DOI:10.1016/j.ceramint.2024.09.315

Wenxian Hu , Yifan Chai , Peijun Liu , Shengli An , Jun Peng

{"title":"Effect of CeO2 on the preparation of functional ceramsite and the adsorption effect of ammonia-nitrogen wastewater treatment","authors":"Wenxian Hu , Yifan Chai , Peijun Liu , Shengli An , Jun Peng","doi":"10.1016/j.ceramint.2024.09.315","DOIUrl":null,"url":null,"abstract":"<div><div>This study investigates the effect of rare earth oxide CeO<sub>2</sub> on the physical properties of ceramsite and its efficiency in treating ammonia-nitrogen wastewater. Ceramsite was prepared from solid waste with 10 % coal gangue added as a pore-forming agent. Ceramsite sample I with CeO<sub>2</sub> and sample II without CeO<sub>2</sub> were prepared using pure reagents. The process parameters for both samples were optimized using an orthogonal test. Additionally, the effects of CeO<sub>2</sub> on ceramsite performance and the treatment of ammonia-nitrogen wastewater were studied, and the adsorption mechanism of CeO<sub>2</sub> on ammonia-nitrogen wastewater was clarified. The process parameters for preparing ceramsite sample Ⅰ were: preheating for 30 min at 600 °C, followed by roasting for 20 min at 1090 °C. The parameters for preparing ceramsite sample Ⅱ were: preheating for 30 min at 600 °C, followed by roasting time for 15 min at 1090 °C. The presence of CeO<sub>2</sub> increased the porosity of the ceramsite by 0.89 % and the specific surface area by 0.66 m<sup>2</sup>/g. Under neutral environmental conditions of water samples, CeO<sub>2</sub> increased the removal rate of ammonia nitrogen by 1.85 %. Ceramsite has a high porosity and specific surface area, indicating that it has abundant internal pores, a large contact area with ammonia-nitrogen, a strong ability to remove ammonia nitrogen, and resistance to erosion and water flow shear, which are conducive to the treatment of ammonia-nitrogen wastewater.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"50 23","pages":"Pages 49712-49723"},"PeriodicalIF":5.1000,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ceramics International","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0272884224043505","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}

引用次数: 0

Abstract

This study investigates the effect of rare earth oxide CeO₂ on the physical properties of ceramsite and its efficiency in treating ammonia-nitrogen wastewater. Ceramsite was prepared from solid waste with 10 % coal gangue added as a pore-forming agent. Ceramsite sample I with CeO₂ and sample II without CeO₂ were prepared using pure reagents. The process parameters for both samples were optimized using an orthogonal test. Additionally, the effects of CeO₂ on ceramsite performance and the treatment of ammonia-nitrogen wastewater were studied, and the adsorption mechanism of CeO₂ on ammonia-nitrogen wastewater was clarified. The process parameters for preparing ceramsite sample Ⅰ were: preheating for 30 min at 600 °C, followed by roasting for 20 min at 1090 °C. The parameters for preparing ceramsite sample Ⅱ were: preheating for 30 min at 600 °C, followed by roasting time for 15 min at 1090 °C. The presence of CeO₂ increased the porosity of the ceramsite by 0.89 % and the specific surface area by 0.66 m²/g. Under neutral environmental conditions of water samples, CeO₂ increased the removal rate of ammonia nitrogen by 1.85 %. Ceramsite has a high porosity and specific surface area, indicating that it has abundant internal pores, a large contact area with ammonia-nitrogen, a strong ability to remove ammonia nitrogen, and resistance to erosion and water flow shear, which are conducive to the treatment of ammonia-nitrogen wastewater.

查看原文本刊更多论文

CeO2 对功能陶瓷石制备的影响及氨氮废水处理的吸附效果

本研究探讨了稀土氧化物 CeO2 对陶瓷石物理性质的影响及其处理氨氮废水的效率。陶瓷石由固体废弃物制备而成，其中添加了 10% 的煤矸石作为孔隙形成剂。使用纯试剂制备了含 CeO2 的陶瓷石样品 I 和不含 CeO2 的样品 II。采用正交试验对两种样品的工艺参数进行了优化。此外，还研究了 CeO2 对陶瓷石性能和氨氮废水处理的影响，并阐明了 CeO2 对氨氮废水的吸附机理。制备陶瓷石样品Ⅰ的工艺参数为：600 ℃预热 30 分钟，然后在 1090 ℃焙烧 20 分钟。制备陶瓷石样品Ⅱ的工艺参数为：在 600 ℃ 预热 30 分钟，然后在 1090 ℃ 焙烧 15 分钟。CeO2 的存在使陶瓷石的孔隙率增加了 0.89%，比表面积增加了 0.66 m2/g。在水样的中性环境条件下，CeO2 使氨氮的去除率提高了 1.85%。陶瓷石具有较高的孔隙率和比表面积，表明其内部孔隙丰富，与氨氮的接触面积大，去除氨氮的能力强，且耐侵蚀和水流剪切，有利于氨氮废水的处理。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Ceramics International 工程技术-材料科学：硅酸盐

CiteScore

9.40

自引率

15.40%

发文量

4558

审稿时长

25 days

期刊介绍： Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.