Song Jinzhi, Li Yun, Wang Yang, Zhong Lei, Liu Yang, Sun Xinyue, He Bo, Li Yanchun, Cao Shan
State Key Laboratory of Biobased Material and Green Papermaking, School of Light Industry and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China.
College of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, China.
Materials (Basel). 2021 Mar 30;14(7):1690. doi: 10.3390/ma14071690.
A large amount of cow hair solid waste is produced in leather production, and a reasonable treatment should be developed to reduce the pollution. In this study, cow hair waste was utilized as the carbon precursor, and N was determined to be the most appropriate atmosphere for biochar preparation. We performed a comparison of the properties of biochars that were prepared with different methods, including direct pyrolysis, KOH activation, and the MgO template method. The characterization results show that the highest specific surface area reaches 1753.075 m/g. Subsequently, the keratin that was extracted from cow hair and purified was used to prepare a biochar with the MgO template method, obtaining an orderly sponge structure. The biochar from cow hair waste was further used to absorb direct blue dye wastewater, and its adsorption capacity reached 1477 mg/g after 10 h with a high efficiency of regeneration. This study successfully utilized keratin-containing hair waste and provides a new source for synthesizing carbon materials for dye wastewater treatment.
皮革生产过程中会产生大量的牛毛固体废物，因此应开发合理的处理方法以减少污染。在本研究中，牛毛废料被用作碳前驱体，并且确定N为制备生物炭的最合适气氛。我们对通过不同方法制备的生物炭的性质进行了比较，这些方法包括直接热解、KOH活化和MgO模板法。表征结果表明，最高比表面积达到1753.075 m/g。随后，从牛毛中提取并纯化的角蛋白被用于通过MgO模板法制备生物炭，得到了有序的海绵结构。牛毛废料制成的生物炭进一步用于吸附直接蓝染料废水，10小时后其吸附容量达到1477 mg/g，且具有高效的再生性能。本研究成功利用了含角蛋白的毛发废料，并为合成用于处理染料废水的碳材料提供了新的来源。
