Smoliński Adam, Stańczyk Krzysztof, Kapusta Krzysztof, Howaniec Natalia
Department of Energy Saving and Air Protection, Central Mining Institute, Plac Gwarków 1, 40-166 Katowice, Poland.
Water Air Soil Pollut. 2012 Nov;223(9):5745-5758. doi: 10.1007/s11270-012-1311-5. Epub 2012 Sep 22.
The main goal of the study was the analysis of the parameters of wastewater generated during the ex situ underground coal gasification (UCG) experiments on lignite from Belchatow, and hard coal from Ziemowit and Bobrek coal mines, simulated in the ex situ reactor. The UCG wastewater may pose a potential threat to the groundwater since it contains high concentrations of inorganic (i.e., ammonia nitrogen, nitrites, chlorides, free and bound cyanides, sulfates and trace elements: As, B, Cr, Zn, Al, Cd, Co, Mn, Cu, Mo, Ni, Pb, Hg, Se, Ti, Fe) and organic (i.e., phenolics, benzene and their alkyl derivatives, and polycyclic aromatic hydrocarbons) contaminants. The principal component analysis and hierarchical clustering analysis enabled to effectively explore the similarities and dissimilarities between the samples generated in lignite and hard coal oxygen gasification process in terms of the amounts and concentrations of particular components. The total amount of wastewater produced in lignite gasification process was higher than the amount generated in hard coal gasification experiments. The lignite gasification wastewater was also characterized by the highest contents of acenaphthene, phenanthrene, anthracene, fluoranthene, and pyrene, whereas hard coal gasification wastewater was characterized by relatively higher concentrations of nitrites, As, Cr, Cu, benzene, toluene, xylene, benzo(a)anthracene, chrysene, benzo(b)fluoranthene, benzo(k)fluoranthene, and benzo(a)pyrene.
该研究的主要目标是分析在异地反应器中模拟的、对来自贝乌哈托夫的褐煤以及来自齐莫维特和博布雷克煤矿的硬煤进行的异地地下煤气化（UCG）实验过程中产生的废水参数。UCG废水可能会对地下水构成潜在威胁，因为它含有高浓度的无机污染物（即氨氮、亚硝酸盐、氯化物、游离和结合氰化物、硫酸盐以及微量元素：砷、硼、铬、锌、铝、镉、钴、锰、铜、钼、镍、铅、汞、硒、钛、铁）和有机污染物（即酚类、苯及其烷基衍生物以及多环芳烃）。主成分分析和层次聚类分析能够有效地探究褐煤和硬煤氧气气化过程中产生的样品在特定成分的含量和浓度方面的异同。褐煤气化过程中产生的废水总量高于硬煤气化实验中产生的废水量。褐煤气化废水还具有苊、菲、蒽、荧蒽和芘含量最高的特点，而硬煤气化废水的特征是亚硝酸盐、砷、铬、铜、苯、甲苯、二甲苯、苯并(a)蒽、 Chrysene、苯并(b)荧蒽、苯并(k)荧蒽和苯并(a)芘的浓度相对较高。
