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首页> 外文期刊>Clean technologies and environmental policy >Toward green technology: a review on some efficient model plant-based coagulants/flocculants for freshwater and wastewater remediation
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Toward green technology: a review on some efficient model plant-based coagulants/flocculants for freshwater and wastewater remediation

机译：朝向绿色技术：对淡水和废水修复的一些有效模型植物凝结剂/絮凝剂的综述

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Plant-based coagulants/flocculants are foreseen to be a major progress in water treatment technology owing to their safety, biodegradability and availability, unlike synthetic chemical water refiners such as Al, Fe salts and organic polymers claimed to cause threats to our ecosystem either via their residues in the treated waters or due to their generated toxic sludge. Further, the increasing global awareness about environmental issues is acting as a driving force behind the interest toward the use of green resources as valuable products for water treatment. Substitution of synthetic coagulants/flocculants by such natural materials can not only minimize ecosystem damages and threats, but would also foster the way toward an era of clean technology and a sustainable environment. The present paper reviews works on the most efficient model plant-based coagulants/flocculants, moringa seeds, cactus pads, okra seed pods and mango kernels, via highlighting their effectiveness in treating a variety of waters. This review focuses also on the extracting processes used for their preparation, on the type of their active compounds as well as on water pollutant removal mechanisms. Among the four known coagulation-floccula-tion phenomenon, both polymer bridging and charge neutralization were assumed to be the main predominant mechanisms of bio-coagulants/bio-flocculants toward water contaminant removal. Further, this paper sheds light on where future works should head aiming to stress on the exploitation of green materials in water remediation. We believe that this review can provide an immediate platform for scientists to intensify their research on more efficient natural products to be used in water processing for the sake of a safer environment.
机译：由于其安全性，可生物降解性和可用性，与诸如Al，Fe Salts和有机聚合物如Al，Fe Salts和有机聚合物，因此，植物的凝结剂/絮凝剂是在水处理技术的主要进步，例如通过它们，索赔和有机聚合物，无论是通过他们经过处理的水中的残留物或由于它们产生的有毒污泥。此外，对环境问题的全球知名度越来越越来越高，遵守利益使用绿色资源作为水处理产品的兴趣。通过这种天然材料取代合成凝结剂/絮凝剂不仅可以最大限度地减少生态系统损害和威胁，而且还将促进朝着清洁技术和可持续环境的时代的方式。本文通过突出其治疗各种水域的有效性，本文对最效率的模型植物凝血剂/絮凝剂，辣木种子，仙人掌垫，秋葵种子和芒果核。本综述还重点介绍，用于其制备的提取方法，在其活性化合物的类型以及水污染物去除机制上。在四种已知的凝血 - 絮凝法中，假设聚合物桥接和电荷中和都是生物凝结剂/生物絮凝剂对水污染物去除的主要主要机制。此外，本文揭示了未来作品的旨在强调水处理中绿色材料的剥削。我们认为，本综述可以为科学家提供立即平台，以加强他们对更高效的天然产品的研究，以便在水处理中用于更安全的环境。

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