Review on coal fly ash generation and utilization for resolving mercury contamination issues in Central Asia: Kazakhstan

IF 4.3 3区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Environmental Reviews Pub Date : 2022-03-03 DOI:10.1139/er-2021-0035

A. Satayeva, A. Baimenov, S. Azat, U. Zhantikeyev, A. Seisenova, Z. Tauanov

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引用次数: 2

Abstract

The generation of coal fly ash (CFA) in coal-fired power plants worldwide has been a major concern over the past few decades. CFA as a by-product possesses unique properties and chemical composition that could be utilized in resolving mercury contamination issues in Central Asia, particularly in Kazakhstan. This review article gives an overview of coal generation capacity and evaluation of the current state of electricity production and ecological concerns related to CFA accumulation. We provide a detailed comparison of the physical properties and chemical compositions of three types of CFAs from Kazakhstani power plants, and present potential approaches to help alleviate mercury contamination issues. Furthermore, this review highlights the current state of mercury contamination in artificial Lake Balkyldak and in the Nura River of the North and Central regions of Kazakhstan. Of particular interest is the appropriate utilization of CFAs in resolving mercury contamination issues by highlighting and comparing the state-of-the-art technology of porous and non-porous materials and currently reported in the literature.

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哈萨克斯坦对中亚粉煤灰发电和利用以解决汞污染问题的审查

在过去的几十年里，世界各地燃煤发电厂中粉煤灰的产生一直是一个主要问题。CFA作为一种副产品具有独特的特性和化学成分，可用于解决中亚特别是哈萨克斯坦的汞污染问题。这篇综述文章概述了煤炭发电能力，并评估了与CFA积累相关的电力生产和生态问题的现状。我们对哈萨克斯坦发电厂三种CFA的物理特性和化学成分进行了详细比较，并提出了有助于缓解汞污染问题的潜在方法。此外，本综述强调了哈萨克斯坦北部和中部地区巴尔基尔达克人工湖和努拉河的汞污染现状。特别令人感兴趣的是，通过强调和比较目前文献中报道的最先进的多孔和非多孔材料技术，在解决汞污染问题方面适当利用CFA。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Environmental Reviews 环境科学-环境科学

自引率

3.50%

发文量

期刊介绍： Published since 1993, Environmental Reviews is a quarterly journal that presents authoritative literature reviews on a wide range of environmental science and associated environmental studies topics, with emphasis on the effects on and response of both natural and manmade ecosystems to anthropogenic stress. The authorship and scope are international, with critical literature reviews submitted and invited on such topics as sustainability, water supply management, climate change, harvesting impacts, acid rain, pesticide use, lake acidification, air and marine pollution, oil and gas development, biological control, food chain biomagnification, rehabilitation of polluted aquatic systems, erosion, forestry, bio-indicators of environmental stress, conservation of biodiversity, and many other environmental issues.