Preparing Biochars from Cow Hair Waste Produced in a Tannery for Dye Wastewater Treatment.
Preparing Biochars from Cow Hair Waste Produced in a Tannery for Dye Wastewater Treatment.
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从制革厂产生的牛毛废料中制备生物炭用于染料废水处理
DOI：
10.3390/ma14071690
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发表时间：
2021-03-30
期刊：
影响因子：
--
通讯作者：
Cao S
中科院分区：
文献类型：
--
作者：
Song J;Li Y;Wang Y;Zhong L;Liu Y;Sun X;He B;Li Y;Cao S
制革生产中产生大量的牛毛固体废弃物，应开发合理的处理方法，减少污染。在这项研究中，牛毛废物被用作碳前体，和N2被确定为最合适的气氛制备生物炭。比较了直接热解法、KOH活化法和MgO模板法制备的生物炭的性质。表征结果表明，最高比表面积可达1753.075 m2/g。随后，从牛毛中提取并纯化角蛋白，采用氧化镁模板法制备生物炭，得到有序的海绵状结构。将牛粪渣生物炭进一步用于直接蓝染料废水的吸附，10 h后吸附容量达到1477 mg/g，再生效率高。本研究成功地利用了含角蛋白的毛发废弃物，为合成染料废水处理用炭材料提供了新的来源。
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 N2 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 m2/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.
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