2020
DOI: 10.1007/s10230-020-00677-8
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Comparison of Metal Adsorption from Aqueous Solutions on Coal and Char Remaining After In-situ Underground Coal Gasification (UCG)

Abstract: The aim of the study was to describe the sorption interactions between potentially toxic metals (Cd, Co, Cu, Pb) and materials from an underground coal gasification (UCG) experimental zone. These interactions seem to be significant in terms of the impact of in situ UCG on the groundwater environment. Sorption parameters were determined for two different sample types: subbituminous coal mined from the coal-bed and then subjected to gasification and coal char from the cavity formed by the UCG process. Laboratory… Show more

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Cited by 9 publications
(3 citation statements)
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“…Among conventional methods for treating inorganic waste waters such as discharges from the mining industry, adsorption [46,93] has become one of the better treatment alternatives given that it can be implemented using various low-cost adsorbents and with larger metal-binding capacities [46,94,95]. Adsorption can be defined as is a simple, useful and effective water treatment method [27,96] that is based on a mass transfer process enabling to bind to a solid phase (an adsorbent) substances contained in water via physical or chemical interactions [93,96].…”
Section: Physicochemical Treatmentmentioning
confidence: 99%
See 1 more Smart Citation
“…Among conventional methods for treating inorganic waste waters such as discharges from the mining industry, adsorption [46,93] has become one of the better treatment alternatives given that it can be implemented using various low-cost adsorbents and with larger metal-binding capacities [46,94,95]. Adsorption can be defined as is a simple, useful and effective water treatment method [27,96] that is based on a mass transfer process enabling to bind to a solid phase (an adsorbent) substances contained in water via physical or chemical interactions [93,96].…”
Section: Physicochemical Treatmentmentioning
confidence: 99%
“…The adsorbents can also consist of materials such as activated carbon, zeolites, as well as cheaper materials such as by-products from industrial processes, agricultural wastes and biosorbents consisting of stems, bark, leaves, including old newspaper, etc. [46,[93][94][95][96][97]. [98] showed that adsorption is technically feasible to remove, with high efficiency (up to 92 % of chromium), heavy metal from industrial wastewater using composite biosorbent prepared by coating chitosan onto acid-treated oil palm shell charcoal, that is, a product derived from natural materials [46,93].…”
Section: Physicochemical Treatmentmentioning
confidence: 99%
“…Bentonites for sorption have also been used in mixtures with other materials (Parrotia persica) to increase their efficiency [12]. Other materials with a confirmed Cd sorption effect include, for example, charcoal [13]. In addition to natural materials, by-products from production can be used for sorption [14].…”
Section: Introductionmentioning
confidence: 99%