Salt-free Chromium Tanning: Practical Approaches

IF 0.6 4区 工程技术 Q4 CHEMISTRY, APPLIED Journal of The American Leather Chemists Association Pub Date : 2022-01-03 DOI:10.34314/jalca.v117i1.4690
M. Sathish, R. Aravindhan, J. Rao
{"title":"Salt-free Chromium Tanning: Practical Approaches","authors":"M. Sathish, R. Aravindhan, J. Rao","doi":"10.34314/jalca.v117i1.4690","DOIUrl":null,"url":null,"abstract":"Chromium tanning finds a prominant place in leather manufacturing for permanent stabilization of hide/skin matrix. Though, it has multiple advantages in terms of high thermal stability, easy process and low cost etc., the current practice is not environmentally sustainable. Poor chromium exhaustion and TDS load generation are the major environmental threats of conventional chromium tanning systems. On the other hand, salt-free chromium tanning is identified as one of the efficient alternative approaches for hide/skin matrix stabilization. However, it has not been commercially practiced due to the several practical difficulties. In this work attempts have been made to develop a practically viable high-performance salt-free chromium tanning system using deliming liquor as tanning float and changing the order of addition of masking salt. The developed methodologies completely avoid the use of salt/basification process and it is suitable for all kinds of raw materials and tannery houses. Besides, the process enjoys 71-77% reduction in TDS load and the uptake of chromium is around 90%. The physical strength characteristics are on par with conventional process and the leathers exhibit good grain tightness and roundness. The developed methodologies are simple and do not require any specialty chemicals.     ","PeriodicalId":17201,"journal":{"name":"Journal of The American Leather Chemists Association","volume":"33 1","pages":""},"PeriodicalIF":0.6000,"publicationDate":"2022-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of The American Leather Chemists Association","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.34314/jalca.v117i1.4690","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, APPLIED","Score":null,"Total":0}
引用次数: 1

Abstract

Chromium tanning finds a prominant place in leather manufacturing for permanent stabilization of hide/skin matrix. Though, it has multiple advantages in terms of high thermal stability, easy process and low cost etc., the current practice is not environmentally sustainable. Poor chromium exhaustion and TDS load generation are the major environmental threats of conventional chromium tanning systems. On the other hand, salt-free chromium tanning is identified as one of the efficient alternative approaches for hide/skin matrix stabilization. However, it has not been commercially practiced due to the several practical difficulties. In this work attempts have been made to develop a practically viable high-performance salt-free chromium tanning system using deliming liquor as tanning float and changing the order of addition of masking salt. The developed methodologies completely avoid the use of salt/basification process and it is suitable for all kinds of raw materials and tannery houses. Besides, the process enjoys 71-77% reduction in TDS load and the uptake of chromium is around 90%. The physical strength characteristics are on par with conventional process and the leathers exhibit good grain tightness and roundness. The developed methodologies are simple and do not require any specialty chemicals.     
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
无盐铬鞣制:实用方法
铬鞣制在皮革制造中占有重要地位,用于永久稳定皮革/皮肤基质。虽然它具有热稳定性高、工艺简单、成本低等优点,但目前的做法是不环保的。铬消耗差和TDS负荷产生是传统铬鞣系统的主要环境威胁。另一方面,无盐铬鞣制被认为是皮革/皮肤基质稳定的有效替代方法之一。然而,由于一些实际困难,它尚未商业化。本文尝试以定界液为鞣剂,改变掩蔽盐的添加顺序,开发一种实际可行的高性能无盐铬鞣体系。开发的方法完全避免了盐/碱化过程的使用,适用于各种原材料和制革厂。此外,该工艺的TDS负荷降低了71-77%,铬的吸收率在90%左右。物理强度特性与传统工艺相当,皮革具有良好的颗粒紧密性和圆度。开发的方法简单,不需要任何特殊化学品。
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 去求助
来源期刊
Journal of The American Leather Chemists Association
Journal of The American Leather Chemists Association 工程技术-材料科学:纺织
CiteScore
1.30
自引率
33.30%
发文量
29
审稿时长
3 months
期刊介绍: The Journal of the American Leather Chemists Association publishes manuscripts on all aspects of leather science, engineering, technology, and economics, and will consider related subjects that address concerns of the industry. Examples: hide/skin quality or utilization, leather production methods/equipment, tanning materials/leather chemicals, new and improved leathers, collagen studies, leather by-products, impacts of changes in leather products industries, process efficiency, sustainability, regulatory, safety, environmental, tannery waste management and industry economics.
期刊最新文献
Super Robust, Anti-Bacterial Polyurethane Ionogel with High Sensitivity and Hydrophobicity Effect of Pigment-Acrylic Binder Ratio on the Surface and Physical Properties of Resin Finished Leather Evaluation of the Physical Properties of Goatskins Tanned using Banana (Musa spp.) Leaf Midrib Tannins Application of some Plant Extracts as Biocolorants for Leather During Finishing Process Awards Banquet Opening and Closing Remarks
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1