| 造纸黑液酸析法回收木质素 |
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| 引用本文： | 秦毅红,王云燕.造纸黑液酸析法回收木质素[J].环境污染与防治,1999,21(4):5-7. |
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| 作者姓名： | 秦毅红 王云燕 |
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| 作者单位： | 中南工业大学冶化研究所!长沙410083 |
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| 摘 要： | 研究了加酸沉淀回收碱法草浆黑液中木质素的工艺，探讨了酸浓度，温度，ｐＨ值及加酸速度对木质素回收量的影响，得出的最佳条件是：硫酸浓度为５０％，温度为４０℃￣５０℃，ｐＨ值为３．０左右，加酸速度以控制不使产生大量泡沫为准。在上述条件下，木质素的回收效果最佳。
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| 关 键 词： | 黑液 酸析法 木质素 造纸废液 废水处理工艺 |
Recovery or lignin from black liquor of paper-making by acidulation method |
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| Qi Yihong,Wang Yunyan,Shu Yude.Recovery or lignin from black liquor of paper-making by acidulation method[J].Environmental Pollution & Control,1999,21(4):5-7. |
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| Authors: | Qi Yihong Wang Yunyan Shu Yude |
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| Abstract: | The process of recovering lignin from the alkaline straw pulp effluent black liquor by acidulationprecipitation was studied. The effects of acid concentration (c), pH. temperature (t) and acid now rate on lignin recovery were discussed in detail, while the optimum conditions were obtained : c = 50%, pH=3. 0, t= 40C ~ 50'C and the acid flow rate was controlled not to form a lot of froth. Under the above conditions, the lignin recovery was the best. |
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| Keywords: | Black liquor Acidulation Lignin |
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