| 废铬液循环过程中铬配合物组分变化特征的研究 |
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| 引用本文： | 马托,马宏瑞,丁绍兰,张凯,王晓蓉. 废铬液循环过程中铬配合物组分变化特征的研究[J]. 中国皮革, 2004, 33(9): 22-25 |
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| 作者姓名： | 马托 马宏瑞 丁绍兰 张凯 王晓蓉 |
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| 作者单位： | 1. 陕西科技大学资源与环境学院,咸阳,712081
2. 陕西科技大学资源与环境学院,咸阳,712081;污染控制与资源化研究国家重点实验室,南京大学环境学院,南京,210093 |
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| 基金项目： | 污染控制与资源化技术研究国家重点实验室开放基金资助项目 |
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| 摘 要： | 采用离子交换-H2O-NaClO4-HCl梯度洗脱体系,对废铬液14次循环利用过程中的中性盐、铬配合物组分进行了跟踪测定。研究结果表明:整个循环过程中,中性盐由氯化钠型转化为硫酸钠型,并保持浓度稳定在0.82mol·L-1,铬配合物中阴/非离子型配合物组分稳定在3%～6%,带正电荷的配合物则由低价态逐渐向高价态转化,循环结束后,高价态配合物由51%增加到79%,配合物组成趋于稳定。
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| 关 键 词： | 废铬液 循环鞣制 配合物组分 |
| 修稿时间： | 2003-11-05 |
Distribution characteristic of chromium complexes from used tanning liquors during chromium tanning recycle |
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| Ma Tuo,Ma Hongrui,Ding Shaolan,Zhang Kai,Wang Xiaorong. Distribution characteristic of chromium complexes from used tanning liquors during chromium tanning recycle[J]. China Leather, 2004, 33(9): 22-25 |
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| Authors: | Ma Tuo Ma Hongrui Ding Shaolan Zhang Kai Wang Xiaorong |
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| Abstract: | A cation exchange resin associated with the elution system of H2O - NaClO4 - HCl was used to separate and de-terminate the distribution of chromium complexes in spent tanning liquors during tanning recycle. The results showed that neutral salt concentrations in spent liquors were invariable and changed from NaCl to Na2SO4 after 5 time - tannings. Chromium complexes from spent tanning liquors transformed gradually from the complexes with low positive charge to high positive charge by about 28% during whole tanning recycle. |
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| Keywords: | spent chromium tanning recycle chromium complexes |
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