Environmental Science Department, Sapientia Hungarian University of Transylvania, Calea Turzii No. 4, 400193 Cluj-Napoca, Romania.
Department of Genetics, Microbiology and Biotechnology, Hungarian University of Agriculture and Life Sciences, Páter Károly No. 1, H-2100 Gödöllő, Hungary.
Molecules. 2021 Sep 6;26(17):5419. doi: 10.3390/molecules26175419.
The primary, most obvious parameter indicating water quality is the color of the water. Not only can it be aesthetically disturbing, but it can also be an indicator of contamination. Clean, high-quality water is a valuable, essential asset. Of the available technologies for removing dyes, adsorption is the most used method due to its ease of use, cost-effectiveness, and high efficiency. The adsorption process is influenced by several parameters, which are the basis of all laboratories researching the optimum conditions. The main objective of this review is to provide up-to-date information on the most studied influencing factors. The effects of initial dye concentration, pH, adsorbent dosage, particle size and temperature are illustrated through examples from the last five years (2017-2021) of research. Moreover, general trends are drawn based on these findings. The removal time ranged from 5 min to 36 h (E = 100% was achieved within 5-60 min). In addition, nearly 80% efficiency can be achieved with just 0.05 g of adsorbent. It is important to reduce adsorbent particle size (with Φ decrease E = 8-99%). Among the dyes analyzed in this paper, Methylene Blue, Congo Red, Malachite Green, Crystal Violet were the most frequently studied. Our conclusions are based on previously published literature.
水质的首要、最明显的参数是水的颜色。它不仅在美学上令人不快，而且还可能是污染的指标。清洁、高质量的水是一种有价值的、必不可少的资产。在去除染料的现有技术中，由于其使用方便、成本效益高和效率高，吸附法是最常用的方法。吸附过程受几个参数的影响，这些参数是所有研究最佳条件的实验室的基础。本综述的主要目的是提供关于最受研究影响因素的最新信息。通过过去五年（2017-2021 年）的研究实例说明了初始染料浓度、pH 值、吸附剂用量、粒径和温度的影响。此外，还根据这些发现得出了一般趋势。去除时间从 5 分钟到 36 小时不等（E = 100%在 5-60 分钟内实现）。此外，只需 0.05 克吸附剂即可实现近 80%的效率。减小吸附剂粒径（随着Φ的减小 E = 8-99%）很重要。在本文分析的染料中，亚甲蓝、刚果红、孔雀绿、结晶紫是研究最多的染料。我们的结论是基于以前发表的文献。
