Key Laboratory of Science & Technology of Eco-Textile, Ministry of Education, Donghua University, Shanghai, 201620, China.
Environ Sci Pollut Res Int. 2014 Apr;21(8):5730-6. doi: 10.1007/s11356-014-2513-8. Epub 2014 Jan 18.
In this work, pigeon feathers, a kind of totally waste by-product from the poultry industry, were utilized to fabricate a highly porous keratin sponge in a very simple way by freeze-drying treatment of the dissolved keratin solution, and applied for the first time as an oil adsorbent. An improved method was proposed to dissolve the feather keratin using the inexpensive sodium disulfite as the reducing reagent for sulfitolysis reaction, with a much lower concentration of all involving reaction regents. Moreover, the regenerated keratin sponges obtained a high oil adsorption capacity of above 30 g/g for both liquid paraffin and soybean oil, as well as a good oil holding ability, suggesting that this keratin sponge might be a potential for use as oil adsorbent.
在这项工作中，我们利用鸽子羽毛（一种来自家禽业的完全浪费的副产品），通过溶解角蛋白溶液的冷冻干燥处理，非常简单地制备了一种高度多孔的角蛋白海绵，并首次将其用作吸油剂。我们提出了一种改良的方法，使用廉价的亚硫酸氢钠作为还原试剂来进行亚硫酸氢盐分解反应，从而溶解羽毛角蛋白，其中涉及的反应试剂的浓度要低得多。此外，所得到的再生角蛋白海绵对液体石蜡和豆油的吸附容量都超过了 30 g/g，并且具有良好的吸油能力，这表明这种角蛋白海绵可能是一种有潜力的吸油剂。
