An online technology for effectively monitoring inorganic condensable particulate matter emitted from industrial plants

IF 12.2 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Journal of Hazardous Materials Pub Date : 2022-04-15 DOI:10.1016/j.jhazmat.2022.128221

Anlin Liu , Jinrun Yi , Xiang Ding , Jianguo Deng , Di Wu , Yaoqiang Huo , Jingkun Jiang , Qing Li , Jianmin Chen

{"title":"An online technology for effectively monitoring inorganic condensable particulate matter emitted from industrial plants","authors":"Anlin Liu , Jinrun Yi , Xiang Ding , Jianguo Deng , Di Wu , Yaoqiang Huo , Jingkun Jiang , Qing Li , Jianmin Chen","doi":"10.1016/j.jhazmat.2022.128221","DOIUrl":null,"url":null,"abstract":"<div>The concentration of condensable particulate matter (CPM) has gradually exceeded that of filterable particulate matter emitted from industrial plants equipped with advanced air pollution control systems. However, there is still no available online technology to measure CPM emissions. Based on the significant linear correlations (R2 > 0.87, p < 3 × 10‐3) between the electrical conductivity (EC) values and ionic mass concentrations of the CPM solutions when the interference of H+ was excluded. We developed an online inorganic CPM monitoring system, including a cooling and condensation unit, pH and EC meters, a self-cleaning unit, and an automatic control unit. The CPM mass concentrations obtained by the developed online monitoring system agree well (mean bias 3.8–20.7%) with those obtained by the offline system according to USEPA Method 202 when used in parallel during real-world studies. Furthermore, individual ion mass concentrations of CPMs can even be retrieved separately with a time resolution of one hour when industrial plants are under steady operating conditions. The newly developed system makes the online monitoring of CPM emissions available and lays a foundation for the control of CPM emitted from industrial sources to further improve air quality.</div>","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"428 ","pages":"Article 128221"},"PeriodicalIF":12.2000,"publicationDate":"2022-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Hazardous Materials","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0304389422000097","RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, ENVIRONMENTAL","Score":null,"Total":0}

引用次数: 5

Abstract

The concentration of condensable particulate matter (CPM) has gradually exceeded that of filterable particulate matter emitted from industrial plants equipped with advanced air pollution control systems. However, there is still no available online technology to measure CPM emissions. Based on the significant linear correlations (R² > 0.87, p < 3 × 10^‐3) between the electrical conductivity (EC) values and ionic mass concentrations of the CPM solutions when the interference of H⁺ was excluded. We developed an online inorganic CPM monitoring system, including a cooling and condensation unit, pH and EC meters, a self-cleaning unit, and an automatic control unit. The CPM mass concentrations obtained by the developed online monitoring system agree well (mean bias 3.8–20.7%) with those obtained by the offline system according to USEPA Method 202 when used in parallel during real-world studies. Furthermore, individual ion mass concentrations of CPMs can even be retrieved separately with a time resolution of one hour when industrial plants are under steady operating conditions. The newly developed system makes the online monitoring of CPM emissions available and lays a foundation for the control of CPM emitted from industrial sources to further improve air quality.

查看原文本刊更多论文

一种有效监测工业厂房排放的无机可冷凝颗粒物的在线技术

可冷凝颗粒物(CPM)的浓度已逐渐超过可过滤颗粒物的浓度从工业工厂配备先进的空气污染控制系统排放。然而，目前仍没有可用的在线技术来测量CPM排放。基于显著线性相关(R2 >0.87, p <当排除H+的干扰时，CPM溶液的电导率(EC)值与离子质量浓度之间的关系为3 × 10‐3)。我们开发了一个无机CPM在线监测系统，包括一个冷却和冷凝单元、pH和EC仪表、一个自清洁单元和一个自动控制单元。开发的在线监测系统获得的CPM质量浓度与离线系统根据USEPA方法202获得的CPM质量浓度在实际研究中并行使用时吻合良好(平均偏差3.8-20.7%)。此外，cpm的单个离子质量浓度甚至可以在工业工厂处于稳定运行条件下以一小时的时间分辨率单独检索。该系统实现了对CPM排放的在线监测，为控制工业源CPM排放，进一步改善空气质量奠定了基础。

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

Journal of Hazardous Materials 工程技术-工程：环境

CiteScore

25.40

自引率

5.90%

发文量

3059

审稿时长

58 days

期刊介绍： The Journal of Hazardous Materials serves as a global platform for promoting cutting-edge research in the field of Environmental Science and Engineering. Our publication features a wide range of articles, including full-length research papers, review articles, and perspectives, with the aim of enhancing our understanding of the dangers and risks associated with various materials concerning public health and the environment. It is important to note that the term "environmental contaminants" refers specifically to substances that pose hazardous effects through contamination, while excluding those that do not have such impacts on the environment or human health. Moreover, we emphasize the distinction between wastes and hazardous materials in order to provide further clarity on the scope of the journal. We have a keen interest in exploring specific compounds and microbial agents that have adverse effects on the environment.