亚临界水高温水解蓝革屑的实验研究

doi:10.19677/j.issn.1004-7964.2023.04.005

皮革科学与工程 ›› 2023, Vol. 33 ›› Issue (4): 22-27.doi: 10.19677/j.issn.1004-7964.2023.04.005

亚临界水高温水解蓝革屑的实验研究

卢欣雨^1,2, 张晓伟^1,2, 赵胜宗^1,2, 刘彦^1,2,*

1.四川大学生物质与皮革工程系,四川成都 610065;
2.四川大学制革清洁技术国家工程实验室,四川成都 610065

收稿日期:2022-12-27 出版日期:2023-08-01 上线日期:2023-07-21
通讯作者: *刘彦,女,博士,副教授,研究方向为制革含铬废弃物的资源化利用。E-mail:ly2680@163.com。
作者简介:卢欣雨（1998-）,女,硕士研究生。E-mail:791474875@qq.com。
基金资助:
四川省重点研发项目（2022YFS0463）

Experimental Study on High-temperature Hydrolysis of Chrome Shavings in Sub-critical Water

LU Xinyu^1,2, ZHANG Xiaowei^1,2, ZHAO Shengzong^1,2, LIU Yan^1,2,*

1. Department of Biomass and Leather Engineering, Sichuan University, Chengdu 610065, China;
2. National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, China

Received:2022-12-27 Online:2023-08-01 Published:2023-07-21

摘要/Abstract

摘要： 对亚临界水高温水解蓝革屑的工艺条件进行了系统研究,并对水解物进行了表征。结果表明,温度为160~180 ℃,固液比为1∶30~1∶40,水解1 h,蓝革屑的水解率均能达到76%以上,其中180 ℃时最高可达到78.98%。水解物的铬含量均在3.06~6.05 mg/g,远低于蓝革屑中的（25.31 mg/g）,六价铬量均在（2.02~3.78）mg/kg蓝革屑。水解物的相对分子质量较低（<1000 Da）,成分以肽类物质为主。该方法为蓝革屑的无害化处理提供了新思路。

关键词: 亚临界水, 蓝革屑, 条件探究

Abstract: The process conditions for the high-temperature hydrolysis of chrome shavings in sub-critical water were systematically investigated and the resulting hydrolysate was characterized. The results showed that the hydrolysis rates of chrome shavings could all reach more than 76% when the conditions were 160~180 ℃ of the temperature with the ratio of solid to liquid of 1∶30-1∶40 and hydrolysis time of 1 h. The chromium content in the hydrolysate was 3.06-6.05 mg/g, which is much lower than that in chrome shavings (25.31 mg/g), and the amount of hexavalent chromium was 2.02-3.78 mg/kg chrome shavings. The molecular weight of the hydrolysate was low (<1000 Da), and the components of the hydrolysate were mainly peptides. This method provides a new pathway for the harmless treatment of chrome shavings.

Key words: sub-critical water, chrome shavings, conditional inquiry

中图分类号:

TS59

卢欣雨, 张晓伟, 赵胜宗, 刘彦. 亚临界水高温水解蓝革屑的实验研究[J]. 皮革科学与工程, 2023, 33(4): 22-27.

LU Xinyu, ZHANG Xiaowei, ZHAO Shengzong, LIU Yan. Experimental Study on High-temperature Hydrolysis of Chrome Shavings in Sub-critical Water[J]. Leather Science and Engineering, 2023, 33(4): 22-27.

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亚临界水高温水解蓝革屑的实验研究

Experimental Study on High-temperature Hydrolysis of Chrome Shavings in Sub-critical Water

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