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Isolation of Aliphatic Acids from Pine and Birch Kraft Black Liquors

机译：从松树和桦木牛皮纸黑液中分离脂肪酸

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摘要

The isolation of aliphatic acids from pine and birch kraft black liquors was studied using the following treatments. (1) Precipitation of lignin from the concentrated black liquor by carbonation, (2) evaporation and additional carbonation to remove inorganic salts (NaHCO3 and Na2CO3), (3) liberation of the aliphatic acids by acidification with sulfuric acid resulting also in the precipitation of lignin remaining after carbonation, (4) distillation of formic and acetic acids with simultaneous precipitation of sodium sulfate, and (5) final vacuum distillation of the hydroxy acids.

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作者
Alen, R.;
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年度 1981
页码 1-26
总页数 26
原文格式 PDF
正文语种 eng
中图分类工业技术;
关键词
Water pollution; Paper industry; Aliphatic acids; Theses; Sulfate pulping; Separation; Precipitation(Chemistry); Evaporation; Distillation; Condensation; Utilization; Byproducts; Kraft paper; Pine wood; Birch wood;

机译：水污染;造纸工业;脂肪酸;论文;硫酸盐制浆;分离;沉淀（化学）;蒸发;蒸馏;冷凝;利用;副产品;牛皮纸;松木;桦木;

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Isolation of Aliphatic Acids from Pine and Birch Kraft Black Liquors

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