Abstract

The chemical analysis of humic acids and their activated forms based on brown coal from the Maikuben coal basin (Kazakhstan) was carried out. The humic acids were obtained on the basis of potassium humates. Activated humic acids (AHAs) were prepared by carbonization and activation in argon and water vapor atmospheres at 873 K, and the physicochemical characteristics and surface morphology of the test samples were studied. The electrical resistance (R), electric capacitance (C), and dielectric constant (ε) of the samples in a temperature range of 293–483 K were determined for the first time. The samples obtained were tested as an adsorbent for water treatment in order to remove heavy metals.

中文翻译：

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基于腐殖酸的碳材料的理化和电物理性质

摘要

对来自迈库本煤盆地（哈萨克斯坦）褐煤的腐殖酸及其活化形式进行了化学分析。腐殖酸是基于腐植酸钾获得的。通过在873 K的氩气和水蒸气气氛中碳化和活化来制备活化的腐殖酸（AHA），并研究了试样的理化特性和表面形态。首次确定了在293–483 K温度范围内样品的电阻（R），电容（C）和介电常数（ε）。测试获得的样品作为水处理的吸附剂，以去除重金属。