The manufacture of leather covers a wide productive chain and beyond contributes to the economic flow. The various stages of leather processing result in high volumes of solid waste. In Brazil, a daily generation of 375 tons of solid waste is estimated, and landfills are still the most used route to its destination. In this review, emphasis will be given to researches that have sought alternatives for the use of solid waste from the tannery industry. Among the main applications of solid tannery wastes, the following stand out production of adsorbent materials, biodiesel, biogas, biopolymers, applications in agriculture and other applications involving extraction/recovery of compounds of industrial/commercial interest, isolation of microorganisms and production of enzymes and applications in the animal diet. In each alternative of waste application, the technologies used, the opportunities, and the challenges faced are mentioned. We hope that this review can provide valuable information to promote the broad understanding of the possibilities that tannery solid wastes has for the development of biodegradable and agricultural products, wastewater treatment, extraction of compounds of industrial and commercial interest, among others.

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制革废料的替代用途：环境，可持续性和科学的回顾

皮革制造涵盖了广泛的生产链，并为经济发展做出了贡献。皮革加工的各个阶段都会导致大量的固体废物。在巴西，估计每天产生375吨固体废物，而垃圾填埋场仍然是到达目的地的最常用路线。在本文中，重点将放在那些寻求制革业固体废物替代品使用的研究上。在固体制革废料的主要应用中，以下是吸附材料，生物柴油，沼气，生物聚合物的生产，在农业中的应用以及涉及工业/商业目的化合物的提取/回收，微生物分离以及酶和酶生产的其他应用。在动物饮食中的应用。在每种废物处理方式中，提到使用的技术，机会和面临的挑战。我们希望这次审查能够提供有价值的信息，以促进人们对制革厂固体废物对开发可生物降解和农产品，废水处理，提取具有工业和商业意义的化合物的可能性的广泛理解。