文摘
进展的治疗使用不同的染料污水系统
作者(年代):乌莎·史密斯植物,作为固着Dye-containing废水应该使用环保技术有效治疗,以防止对环境的不利影响和自然水资源。酶可以被交付到目标废水,包括纳米颗粒作为运载系统。它还强调了当前和未来的研究需要重点发展经济可行和环境可持续污水处理实践。几乎有前途的颜色从纺织废水。有关的因素,影响光催化膜反应器系统的性能,讨论了纳米粒子的作用,考虑他们的颜色去除机制。有限的淡水是一个全球性的危机。淡水的消费增长人为活动造成的损失已经超出了可用的水资源。不幸的是,水体仍用作废水从国内汇和工业来源。然而,在最近一段时间,需要补充我们的水资源已经收到越来越多的关注。这导致了发展的战略至少返回水源头可能有毒的形式,使水的二次利用。 These strategies and processes may be collectively termed as wastewater treatment. An anthropogenic activity that produces large volumes of concentrated effluent is the process of dyeing. Whether applied to fabric, paper, pulp, leather. The processes involved in dyeing generate effluents that are rich in colorants. The presence of colorants in wastewater and eventually in receiving waters poses a threat to aquatic life forms. This article attempts to explore and evaluate the use of enzymes to degrade or decolorize the dyestuffs in effluents as an alternative to conventional treatment methods. The removal of coloring matter from effluent is a major problem faced by industries. In general, the chemical structure of dyes contains conjugated double bonds and aromatic rings. Many synthetic dyes tend to persist in the environment due to the inherent stability of their molecular structure. Azo dyes for example, have a characteristic azo NâN linkage which is electron withdrawing in nature. The presence of this linkage decreases the susceptibility of azo dyes to oxidative reactions, thus making them resistant to conventional degradation methods. Complex pollutants that resist degradation and tend to persist in the environment for long durations are considered to be recalcitrant pollutants. Recalcitrance of a given pollutant may sometimes be attributed to unusual substitutions with halides very large molecular size and presence of unusual bonds or highly condensed aromatic rings. The presence of tertiary and quaternary carbon atoms also contributes to recalcitrance. In recent years, the use of living systems such as微生物和植物降解顽固的污染物正在重要性作为一个可行的替代现有理化去除方法。严格的政府政策允许的污染物水平,高成本的专业化学治疗污染物去除和其中的一些治疗方法创建额外的固体浪费导致了许多有效的发展,而简单的生物方法。这些处理过程可以集体分类下废水的生物修复。酶是通用的,可以以不同的方式传递给目标废水。
