Geological controls on the mineralogy and geochemistry of the Beypazari lignite, central Anatolia, Turkey

Querol, Xavier; Whateley, M. K. G.; Fernández-Turiel, J. L.; Tuncali, E.

doi:10.1016/s0166-5162(96)00044-4

Cited by 211 publications

(87 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…T o check and compare fertilizer efficiency of the synthetic merlinoites, laboratory reagent Ca(NO 3 ) 2 ·4H 2 O and struvite (MgNH 4 PO 4 ) generated by Clariant Ibérica Producción, S.A were also used for sunflower growing. T he geochemical composition of pilot-plant merlinoite, soil, and struvite was determined by Inductively-Coupled Plasma Atomic-Emission Spectrometry (ICP-AES) and Inductively-Coupled Plasma Mass Spectrometry (ICP-MS) previously acid-digested following the procedure proposed by Querol et al, 1997 [41]. Leaching test (EN-12457) was applied to merlinoite, soil, and struvite, and the leachates were analyzed by ICP-AES and ICP-MS to determine the potential mobility of major and trace elements, respectively.…”

Section: Fertilizer Efficiency Testmentioning

confidence: 99%

See 1 more Smart Citation

Synthesis of merlinoite from Chinese coal fly ashes and its potential utilization as slow release K-fertilizer

Zhuang

Font

et al. 2014

Journal of Hazardous Materials

View full text Add to dashboard Cite

Section: Fertilizer Efficiency Testmentioning

confidence: 99%

“…T he dried sunflowers were crushed, milled, and acid-digested following the same procedure reported above [41]. Major and trace element concentrations in the sunflowers were determined by ICP-AES and ICP-MS, respectively.…”

Section: Fertilizer Efficiency Testmentioning

confidence: 99%

Synthesis of merlinoite from Chinese coal fly ashes and its potential utilization as slow release K-fertilizer

Zhuang

Font

et al. 2014

Journal of Hazardous Materials

View full text Add to dashboard Cite

“…Pires and Querol, 2004;Levandowski and Kalkreuth, 2008;Silva et al, 2009a,b) and other countries (Vassilev and Vassileva, 1997;Querol et al, 1997;Vassilev et al, 2003;Moreno et al, 2005;Hower et al, 2005aHower et al, , b, 2006Goodarzi, 2006;Ward and French, 2006;Vassilev and Vassileva, 2007;Valentim et al, 2009;, with special reference in most cases to trace elements in the ash materials. Very few of these studies have related the mineralogy of the coal to that of the resulting combustion products.…”

Section: Introductionmentioning

confidence: 99%

Mineralogy and Leaching Characteristics of Coal Ash from a Major Brazilian Power Plant

Silva¹,

Ward²,

Hower³

et al. 2010

CCGP

View full text Add to dashboard Cite

A B S T R A C TThe feed coals, fly ashes and bottom ashes collected from seven different units in a major Brazilian PF power plant have been subjected to comprehensive mineralogical, geochemical, and petrographic studies, to investigate the links between feed coal and ash characteristics. Ashes from two of the units were collected while the coal was being co-fired with oil as part of the boiler start-up procedure, allowing the impact of oil co-firing on ash characteristics also to be evaluated. High proportions of unburnt carbon and high proportions of retained sulphur were found in the fly ashes produced during oil co-firing, probably reflecting less efficient combustion and associated lower combustion temperatures. Higher concentrations of a number of relatively volatile trace elements were also noted in these fly ashes, compared to the fly ashes collected from units under normal operating conditions.The fly ashes produced during oil co-firing gave rise to acid pH conditions in water-based leaching tests, in contrast to the alkaline pH associated with fly ashes produced during normal operations. This probably reflects higher SO 3 contents relative to total CaO + MgO for the co-fired ash samples. Many trace elements that are typically mobilised as cations were also more abundant in leachates from the co-fired fly ashes. This is due, most likely, to the more acid pH conditions involved. Despite similar or even higher total concentrations, however, elements that are typically released from coal ash as oxy-anions were less mobile from the co-fired fly ashes than from the normally-fired fly ash materials.

show abstract

“…In particular, rare earth elements (REEs) in coal have been identified as a group of special significance (Birk and White, 1991;Eskenazy, 1987;Mukhopadhyay et al, 1998;Querol et al, 1997). This is because REEs have two remarkable characteristics: (i) they exhibit a similar chemical behavior that imparts coherency to geochemical events, and (ii) they exhibit a systematic increase in the number of f electrons with increasing atomic number within the lanthanide series, which causes subtle chemical differences in passing from La to Lu.…”

mentioning

confidence: 99%

Rare earth element distribution in the acetic acid soluble fraction of combusted coals: Its implication as a proxy for the original coal-forming plants

Akagi

Suzuki

et al. 2004

Geochem. J.

View full text Add to dashboard Cite

The precise concentrations of rare earth elements (REEs) in Japanese Ashibetsu and Taiheiyo coals, in Indonesian Ambalut coal, and in Australian boghead coal have been determined, in order to compare the REE contents of the coals with those of plants and also to obtain further knowledge of the original plants from which these coals were formed. By leaching the coals after ashing using a 10% acetic acid solution, each coal sample was separated into two fractions: an acetic acid soluble fraction, and an acetic acid insoluble fraction. Our results show that three different types of chondritenormalized REE patterns are observed in the acetic acid soluble fraction of these coals. The acetic acid soluble fractions of the Ashibetsu, the Taiheiyo, and some of the Ambalut coals showed REE patterns identical to those of peat vegetation. Those of other Ambalut coals showed an REE pattern that was similar to that of tree trunks. The boghead coal showed a different REE pattern that was similar to algae, an origin that is also suggested from a maceral study. The REE patterns of the acetic acid soluble fraction can therefore be a useful proxy for determining the original plants that formed the coals.

show abstract

Geological controls on the mineralogy and geochemistry of the Beypazari lignite, central Anatolia, Turkey

Cited by 211 publications

References 12 publications

Synthesis of merlinoite from Chinese coal fly ashes and its potential utilization as slow release K-fertilizer

Synthesis of merlinoite from Chinese coal fly ashes and its potential utilization as slow release K-fertilizer

Mineralogy and Leaching Characteristics of Coal Ash from a Major Brazilian Power Plant

Rare earth element distribution in the acetic acid soluble fraction of combusted coals: Its implication as a proxy for the original coal-forming plants

Contact Info

Product

Resources

About