Influence of core-shell structure design on the preparation of oil-contaminated soil ceramsite and the pollutant decomposition effect

IF 6.9 2区环境科学与生态学 Q1 ENGINEERING, CHEMICAL

Process Safety and Environmental Protection Pub Date : 2024-11-09 DOI:10.1016/j.psep.2024.11.039

Wukui Zheng , Jinfeng Sun , Tian Cui , Yingying Hu , Yuxuan Yang , Hui Li

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引用次数: 0

Abstract

With the growing severity of oil-contaminated soil, its remediation technology has received increased attention. In this study, oil-contaminated soil is granulated into a core, covered with a layer of clean material, and sintered at a high temperature to make a core-shell structured ceramsite that can be used as building aggregates. The results showed that the cylinder compression strength, bulk density and 1 h water absorption of the sintered core-shell structure ceramsite is 9.1 MPa, 1134 kg/m³ and 4.36 %. Furthermore, in comparison with the conventional ceramsite, the core-shell structure process generated 26.9 % more CO₂. This indicates that the design of the core-shell structure makes it easier for the organic gases in the oil-contaminated soil to crack and release CO₂ and H₂O, reducing the tail gas pollution problem. After the process, the alkane organic matter in the ceramsite was removed, and the C content was significantly reduced. This method provides a new approach for the preparation of ceramsite for organic contaminated soil.

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核壳结构设计对石油污染土壤陶瓷石制备及污染物分解效果的影响

随着石油污染土壤问题的日益严重，其修复技术也受到越来越多的关注。在这项研究中，将油污染土壤颗粒化成核，再覆盖一层清洁材料，然后在高温下烧结，制成可用作建筑骨料的核壳结构陶瓷石。结果表明，烧结核壳结构陶瓷土的圆柱体压缩强度、体积密度和 1 h 吸水率分别为 9.1 MPa、1134 kg/m3 和 4.36 %。此外，与传统陶瓷相比，核壳结构工艺多产生了 26.9 % 的二氧化碳。这表明，核壳结构的设计使石油污染土壤中的有机气体更容易裂解并释放出 CO2 和 H2O，从而减少了尾气污染问题。工艺完成后，陶瓷石中的烷烃类有机物被去除，C 含量明显降低。该方法为有机污染土壤陶瓷石的制备提供了一种新方法。

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来源期刊

Process Safety and Environmental Protection 环境科学-工程：化工

CiteScore

11.40

自引率

15.40%

发文量

929

审稿时长

8.0 months

期刊介绍： The Process Safety and Environmental Protection (PSEP) journal is a leading international publication that focuses on the publication of high-quality, original research papers in the field of engineering, specifically those related to the safety of industrial processes and environmental protection. The journal encourages submissions that present new developments in safety and environmental aspects, particularly those that show how research findings can be applied in process engineering design and practice. PSEP is particularly interested in research that brings fresh perspectives to established engineering principles, identifies unsolved problems, or suggests directions for future research. The journal also values contributions that push the boundaries of traditional engineering and welcomes multidisciplinary papers. PSEP's articles are abstracted and indexed by a range of databases and services, which helps to ensure that the journal's research is accessible and recognized in the academic and professional communities. These databases include ANTE, Chemical Abstracts, Chemical Hazards in Industry, Current Contents, Elsevier Engineering Information database, Pascal Francis, Web of Science, Scopus, Engineering Information Database EnCompass LIT (Elsevier), and INSPEC. This wide coverage facilitates the dissemination of the journal's content to a global audience interested in process safety and environmental engineering.