A salt-free pickling chrome tanning approach using a novel sulphonic aromatic acid structure

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• 作者：Hui Zhang^a ; Xingxing Chen^a ; Xuechuan Wang^a ; ^{wangxc@sust.edu.cn} ; Xihuai Qiang^a ; Xiaoning Li^a ; Meng Li^b ; ^{limeng0721@stu.xjtu.edu.cn}
• 关键词：Sulphonic aromatic acid ; Salt-free pickling ; Chrome exhaustion ; Sodium chloride
• 刊名：Journal of Cleaner Production
• 出版年：2017
• 出版时间：20 January 2017
• 年：2017
• 卷：142
• 期：part_P4
• 页码：1741-1748
• 全文大小：2094 K
• 卷排序：142

文摘

The novel sulphonic aromatic acid structure overcomes long-standing salt pollution in conventional pickling process. The novel process completely avoids the using of sodium chloride in conventional pickling. The chromium absorption rate is increased from 71.6% to 98.6%. The chromium contents in spent tanned liquors is dropped to 45.1 mg/L. The costs of novel process far less than conventional process, and the rate of costs reduction close by 47%.