Arsenic removal from aqueous solution: A comprehensive synthesis with meta-data
Arsenic removal from aqueous solution: A comprehensive synthesis with meta-data
复制标题
从水溶液中去除砷：元数据的综合综合
DOI：
10.1016/j.scitotenv.2022.160821
复制
发表时间：
2023
影响因子：
9.8
通讯作者：
Rajapaksha Anushka Upamali
中科院分区：
文献类型：
--
作者：
Aktar Sanjida;Mia Shamim;Makino Tomoyuki;Rahman Mohammad Mahmudur;Rajapaksha Anushka Upamali
从饮用水中去除砷是全球最重要的问题之一。在各种技术中，吸附除砷被认为是一种可行的最有效的方法。然而，对理解不同吸附剂（例如，生物复合材料、生物炭和纳米复合材料等）因为各种因素影响吸附能力。本研究的目的是评估各种吸附剂的有效性与定量估计（朗缪尔吸附最大值，Qmax），以及评估实验条件对实现最大吸附的影响。进行了大量的分析，包括荟萃分析，方差分析（ANOVA），科学计量和回归。结果表明，在吸附剂中，纳米颗粒表现出最大的吸附容量，而预掺杂的生物炭表现出最好的不同生物炭。所有吸附剂的平均值，As（V）去除效率高于As（III）。正如预期的那样，高的零电荷点（PZC）和较高的正表面电荷有利于吸附。还讨论了不同机制的相对贡献。科学计量学分析表明，今后的研究重点应放在低成本吸附剂的开发上，提高吸附剂的可重复使用性，安全处理吸附的砷。总而言之，我们的研究结果提供了一个分子的理解砷吸附不同的吸附剂与定制一个良好的吸附剂从饮用水中去除砷的影响。
Removal of arsenic from drinking water is one of the most important global concerns. Among the various techniques, adsorptive removal of arsenic is considered as a viable most effective method. However, limited attention is given to understand the overall relative sorption capacity of different sorbents (e.g., biocomposite, biochar and nano-composite etc.) since various factors influence the sorption capacity. The aim of this study is to assess the effectiveness of various adsorbents with quantitative estimation (Langmuir adsorption maxima, Qmax) as well as to evaluate the influence of experimental conditions on the achievement of maximum adsorption. A number of analyses including meta-analysis, analysis of variance (ANOVA), scientometric and regression were performed. The results revealed that among the sorbents, nanoparticles show the greatest sorption capacity while pre-doped biochar performed the best among different biochars. Average across all sorbents, As (V) removal efficacy was higher than As (III). As expected, a high point of zero charge (PZC) and higher positive surface charge favored adsorption. The relative contribution of different mechanisms was also discussed. Our scientometric analyses revealed that, research should focus on the development of low-cost adsorbents and increase their reusability, safe disposal of adsorbed arsenic. Altogether, our findings provide a molecular understanding of arsenic sorption to different sorbents with implications for tailoring a good sorbent for arsenic removal from drinking water.