首页> 外文期刊>Journal of Cleaner Production >A salt-free and chromium discharge minimizing tanning technology: the novel cleaner integrated chrome tanning process
【24h】

A salt-free and chromium discharge minimizing tanning technology: the novel cleaner integrated chrome tanning process

机译:无盐和铬排放量最小化的鞣革技术:新型清洁剂集成铬鞣制工艺

获取原文
获取原文并翻译 | 示例
       

摘要

Chrome tanning is the most important and widely used tanning method in leather manufacture up to now. However, simultaneously control of the severe contamination of large amount of chromium and chloride discharge, both of which are serious environmental concerns, is highly challenging with the conventional chrome tanning process. Consequently, the development of leather manufacture is being unsustainable. In order to minimize the emissions of chromium and chloride integrately, a salt-free and high exhaustion chromium tanning method was designed and optimized in both laboratory and pilot scale. The results indicated that, being superior to the conventional process, the chrome tanning process was conducted in a salt-free condition smoothly and the chromium absorbility was increased to 98% from 73% in the novel process. Then the Cr dosage was minimized from 1.16% to 0.61% and the residual Cr concentration in the spent liquor dropped below to 50 mg/L from above 1100 mg/L. The pilot-scale experiments verified that the novel method was acceptable in the aspects of organoleptic and mechanical properties of resultant leather, product style and cost. It is anticipated that the spent liquor containing a very small amount of chrome and chloride can be more easily disposed and the generation of chromium-containing sludge will be stoichiometrical much less. The established novel chrome tanning process satisfactorily solves the longstanding problems commercially and matches the integral requirements of the modern sustainable leather industry. (C) 2015 Elsevier Ltd. All rights reserved.
机译:铬鞣制是迄今为止皮革制造中最重要且应用最广泛的鞣制方法。然而,对于常规的铬鞣制工艺而言,同时控制大量的铬和氯化物排放的严重污染是非常严重的环境问题,这是非常具有挑战性的。因此,皮革制造的发展是不可持续的。为了最大限度地减少铬和氯化物的排放,在实验室和中试规模上设计并优化了一种无盐高耗铬鞣制方法。结果表明,优于常规工艺的铬鞣过程在无盐条件下平稳进行,铬的吸收率从新工艺的73%提高到98%。然后将铬的添加量从1.16%降至0.61%,废液中残留的Cr浓度从1100 mg / L以上降至50 mg / L以下。中试规模的实验证明,在皮革的感官和机械性能,产品样式和成本方面,该新方法是可以接受的。可以预料,含有非常少量的铬和氯化物的废液可以更容易地处置,并且含铬污泥的产生在化学计量上要少得多。既定的新型铬鞣制工艺可以令人满意地解决商业上长期存在的问题,并符合现代可持续皮革工业的整体要求。 (C)2015 Elsevier Ltd.保留所有权利。

著录项

  • 来源
    《Journal of Cleaner Production》 |2016年第1期|1055-1063|共9页
  • 作者单位

    Sichuan Univ, Natl Engn Lab Clean Technol Leather Mfg, Chengdu 610065, Peoples R China;

    Sichuan Univ, Natl Engn Lab Clean Technol Leather Mfg, Chengdu 610065, Peoples R China;

    Sichuan Univ, Key Lab Leather Chem & Engn, Minist Educ, Chengdu 610065, Sichuan, Peoples R China;

    Sichuan Univ, Natl Engn Lab Clean Technol Leather Mfg, Chengdu 610065, Peoples R China|Sichuan Univ, Key Lab Leather Chem & Engn, Minist Educ, Chengdu 610065, Sichuan, Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Leather manufacture; Chrome tanning; High exhaustion; Aromatic sulphonic acid; Salt-free pickling;

    机译:皮革制造;铬鞣;高耗竭;芳族磺酸;无盐腌制;
  • 入库时间 2022-08-17 13:46:40

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号