Environmental Benefits of Substituting Coatings from Solvent-Borne to Water-Borne Coatings Revealed by Total OH Reactivity Measurements

IF 8.8 2区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Environmental Science & Technology Letters Environ. Pub Date : 2025-08-23 DOI:10.1021/acs.estlett.5c00584

Jipeng Qi, Bin Yuan*, Yibo Huangfu, Sihang Wang, Yang Yang, Yuanting Zhang, Weiwei Hu, Ziwei Mo, Xuemei Wang and Min Shao,

{"title":"Environmental Benefits of Substituting Coatings from Solvent-Borne to Water-Borne Coatings Revealed by Total OH Reactivity Measurements","authors":"Jipeng Qi, Bin Yuan*, Yibo Huangfu, Sihang Wang, Yang Yang, Yuanting Zhang, Weiwei Hu, Ziwei Mo, Xuemei Wang and Min Shao, ","doi":"10.1021/acs.estlett.5c00584","DOIUrl":null,"url":null,"abstract":"<p >As an important category of volatile chemical products, coatings contribute significantly to the emissions of reactive organic compounds. While environmental policies have accelerated the replacement of solvent-borne coatings with water-borne alternatives, the secondary formation potential induced by this substitution remains poorly constrained. In this study, we investigate the total reactive organic compound emissions of solvent- and water-borne coatings in terms of total OH reactivity (OHR). The emission factors of the OHR for solvent-borne coatings are 128 times higher than those for water-borne coatings. The huge difference dominantly stems from solvent contents by a factor of 80, with the remaining difference attributed to the average OH reactivity for unit mass of emissions (a factor of 60%). We show that substitutions of solvent-borne coatings with water-borne coatings avoided coating-sector OHR emissions by 64% for the year of 2022. However, solvent-borne coatings still dominate daily OHR emissions (99%). Our future projection indicates that continuous substitution of solvent-borne coatings is still the most effective policy measure for reducing environmental impacts of coating sector emissions, which will gradually decline over the next two decades.</p>","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 9","pages":"1184–1189"},"PeriodicalIF":8.8000,"publicationDate":"2025-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Environmental Science & Technology Letters Environ.","FirstCategoryId":"1","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acs.estlett.5c00584","RegionNum":2,"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: 0

Abstract

As an important category of volatile chemical products, coatings contribute significantly to the emissions of reactive organic compounds. While environmental policies have accelerated the replacement of solvent-borne coatings with water-borne alternatives, the secondary formation potential induced by this substitution remains poorly constrained. In this study, we investigate the total reactive organic compound emissions of solvent- and water-borne coatings in terms of total OH reactivity (OHR). The emission factors of the OHR for solvent-borne coatings are 128 times higher than those for water-borne coatings. The huge difference dominantly stems from solvent contents by a factor of 80, with the remaining difference attributed to the average OH reactivity for unit mass of emissions (a factor of 60%). We show that substitutions of solvent-borne coatings with water-borne coatings avoided coating-sector OHR emissions by 64% for the year of 2022. However, solvent-borne coatings still dominate daily OHR emissions (99%). Our future projection indicates that continuous substitution of solvent-borne coatings is still the most effective policy measure for reducing environmental impacts of coating sector emissions, which will gradually decline over the next two decades.

Abstract Image

查看原文本刊更多论文

总氢氧根反应活性测定揭示了溶剂型涂料取代水性涂料的环境效益

涂料作为挥发性化工产品的一个重要类别，对活性有机化合物的排放起着重要的作用。虽然环境政策加快了用水性替代品取代溶剂型涂料的步伐，但这种替代品引发的二次地层潜力仍然受到限制。在这项研究中，我们根据总OH反应性（OHR）调查了溶剂型和水性涂料的总活性有机化合物排放。溶剂型涂料的OHR排放因子是水性涂料的128倍。这一巨大差异主要源于溶剂含量，其因子为80，其余差异归因于单位质量排放物的平均OH反应性（因子为60%）。研究表明，到2022年，用水性涂料取代溶剂型涂料将使涂料行业的OHR排放量减少64%。然而，溶剂型涂料仍然主导着日常OHR排放（99%）。我们的未来预测表明，持续替代溶剂型涂料仍然是减少涂料行业排放对环境影响的最有效的政策措施，这将在未来20年内逐渐下降。

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

Environmental Science & Technology Letters Environ. ENGINEERING, ENVIRONMENTALENVIRONMENTAL SC-ENVIRONMENTAL SCIENCES

CiteScore

17.90

自引率

3.70%

发文量

163

期刊介绍： Environmental Science & Technology Letters serves as an international forum for brief communications on experimental or theoretical results of exceptional timeliness in all aspects of environmental science, both pure and applied. Published as soon as accepted, these communications are summarized in monthly issues. Additionally, the journal features short reviews on emerging topics in environmental science and technology.