Abstract

Industrial activities generate considerable volumes of wastewater containing organic and inorganic contaminants. Adsorption is an efficient method for wastewater treatment due to its ease of operation, convenience, and efficiency. However, finding suitable adsorbent materials that are abundant, cheap, and efficient remains a challenge. Gelatin is considered a promising adsorbent due to its abundant surface of active groups, water solubility, non-toxicity, and biodegradability. Also, gelatin allows the addition of other compounds in the gel network, overcoming some disadvantages such as low mechanical resistance to temperature and humidity. Here we review the production of gelatin-based composites including beads/spheres, hydrogels, aerogels, and films, and their use to remove toxic metals, dyes, nitrate, phosphate, and oily contaminants from aqueous matrices. Considerations Economic, environmental, and real applications aspects are also discussed.

中文翻译：

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明胶基复合吸附剂用于污染物去除的生产和环境应用：综述

摘要

工业活动产生大量含有有机和无机污染物的废水。由于吸附的操作简便，方便和效率高，吸附是一种有效的废水处理方法。然而，找到合适的，丰富，廉价和有效的吸附材料仍然是一个挑战。明胶因其丰富的活性基团表面，水溶性，无毒和可生物降解性而被认为是一种有前途的吸附剂。同样，明胶允许在凝胶网络中添加其他化合物，从而克服了一些缺点，例如对温度和湿度的低机械耐受性。在这里，我们回顾了包括明珠/球，水凝胶，气凝胶和薄膜在内的明胶基复合材料的生产及其在去除有毒金属，染料，硝酸盐，磷酸盐，以及水性基质中的油性污染物。注意事项还讨论了经济，环境和实际应用方面。