Shunliang LIU, Taiqiang ZHANG, Qinggao Yang, Haoran LI
{"title":"Synergistic promotion of low-temperature pyrolysis and chloride complexation in waste salt purification process","authors":"Shunliang LIU, Taiqiang ZHANG, Qinggao Yang, Haoran LI","doi":"10.1007/s10163-024-01978-8","DOIUrl":null,"url":null,"abstract":"<div><p>Organic waste salt is a high salt hazardous waste produced by the industrial processes. Presently, there is no viable method to reclaiming and treating this issue. Using the commercial pyrocatechol monois-propyl waste salt from the manufactured pyrocatechol monois-propyl ether, a process was developed for the synergistic extraction and purification of NaCl from pyrocatechol monoisopropyl ether (OP) salt leftovers by low-temperature roasting and wet techniques (acidic ambient chloride complexation and hydrogen peroxide oxidation). After treating OP waste salt with low-temperature pyrolysis (320 °C), acidic ferric chloride complexation (pH 2–3, 0.28% FeCl<sub>3</sub>), and neutral hydrogen peroxide oxidation (5% H<sub>2</sub>O<sub>2</sub>), the NaCl in the OP salt residue was purified and recovered with a purity of 98.80%. In addition, the aromatic hydrocarbons in the pyrolysis residue generated iron chloride complexes containing –OH or –COOH in the acidic system, which hastened the dissociation of the NaCl from the organic matter on the surface of the wasted salt.</p></div>","PeriodicalId":643,"journal":{"name":"Journal of Material Cycles and Waste Management","volume":null,"pages":null},"PeriodicalIF":2.7000,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Material Cycles and Waste Management","FirstCategoryId":"93","ListUrlMain":"https://link.springer.com/article/10.1007/s10163-024-01978-8","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
Organic waste salt is a high salt hazardous waste produced by the industrial processes. Presently, there is no viable method to reclaiming and treating this issue. Using the commercial pyrocatechol monois-propyl waste salt from the manufactured pyrocatechol monois-propyl ether, a process was developed for the synergistic extraction and purification of NaCl from pyrocatechol monoisopropyl ether (OP) salt leftovers by low-temperature roasting and wet techniques (acidic ambient chloride complexation and hydrogen peroxide oxidation). After treating OP waste salt with low-temperature pyrolysis (320 °C), acidic ferric chloride complexation (pH 2–3, 0.28% FeCl3), and neutral hydrogen peroxide oxidation (5% H2O2), the NaCl in the OP salt residue was purified and recovered with a purity of 98.80%. In addition, the aromatic hydrocarbons in the pyrolysis residue generated iron chloride complexes containing –OH or –COOH in the acidic system, which hastened the dissociation of the NaCl from the organic matter on the surface of the wasted salt.
期刊介绍:
The Journal of Material Cycles and Waste Management has a twofold focus: research in technical, political, and environmental problems of material cycles and waste management; and information that contributes to the development of an interdisciplinary science of material cycles and waste management. Its aim is to develop solutions and prescriptions for material cycles.
The journal publishes original articles, reviews, and invited papers from a wide range of disciplines related to material cycles and waste management.
The journal is published in cooperation with the Japan Society of Material Cycles and Waste Management (JSMCWM) and the Korea Society of Waste Management (KSWM).