Influence of the composition of cement kiln dust on its interaction with fly ash and slag

Chaunsali, Piyush; Peethamparan, Sulapha

doi:10.1016/j.cemconres.2013.09.001

Cited by 44 publications

(24 citation statements)

References 17 publications

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“…Moreover, in the case of calcium (a very good marker of cement kiln dust; (Chaunsali and Peethamparan 2013)), seven of the eight sites showing impairment of eco-physiological parameters (belonging to clusters 2 and 3) within the 0-2-km band from the cement plant in the SE sector showed Ca concentrations within the first quartile of its ordered series. Calcium-enriched alkaline dust deposition due to cement manufacturing can result in a decrease in photosynthetic pigment content of plants (Farmer 1993) and lichens (i.e.…”

Section: Discussionmentioning

confidence: 98%

Spatial variation of eco-physiological parameters in the lichen Pseudevernia furfuracea transplanted in an area surrounding a cement plant (S Italy)

Lucadamo

Corapi

Paoli

et al. 2015

Environ Monit Assess

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Thalli of the lichen Pseudevernia furfuracea were transplanted for 3 months (November 2010-January 2011) at 61 monitoring sites around a cement plant near Castrovillari (Calabria, southern Italy). NH3, NO x and SO2 concentrations were monitored monthly in a subarea of 10 sites (SA10) where the cement plant was located. At the end of the exposure period, the integrity of cell membranes; membrane lipid peroxidation (thiobarbituric acid reactive substances, TBARS level); vitality (cell respiration); chlorophyll a; chlorophyll b; carotenoids; phaeophytization quotient; photosynthetic efficiency and thalli concentrations of Al, Ca, Mg, V and Fe were measured. NO x concentrations correlated with the site distance from the cement plant while NH3 concentrations correlated with lichen vitality within SA10. For the monitoring area as a whole, only Fe and Mg concentrations correlated with membrane lipid peroxidation, while TBARS levels showed a significant increase and chlorophyll a, chlorophyll b and carotenoids a significant decrease with respect to the lichen origin area. Multivariate analysis (detrended correspondence analysis, cluster analysis and multi-response permutation procedure) of the eco-physiological parameters × monitoring sites data set resulted in four clusters termed C1, C2, C3 and C4. The eco-physiological parameters were compared among the four clusters and lichen origin area by one-way ANOVA. An index of environmental favourableness (IEF) to lichens was calculated to evaluate the spatial recovery of impaired values of TBARS, chlorophyll a, chlorophyll b, xanthophylls + carotenoids and phaeophytization quotient. The results indicate that there is no clear spatial trend in mycobiont impairment even though the IEF values suggest a higher number of sites with low levels of membrane lipid peroxidation in the 2--3-km distance band from the cement plant (the outermost) than in the two other distance bands (0-1 and 1-2 km). The photobiont seems to be damaged mainly in the inner distance band of the study area as suggested by the gradual but significant recovery trend of pigment levels and phaeophytization quotient from the inner distance band to the outer one (as shown by the IEF values). Conversion of chlorophyll to phaeophytin probably is not the only process affecting pigment levels.

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Section: Discussionmentioning

confidence: 98%

Spatial variation of eco-physiological parameters in the lichen Pseudevernia furfuracea transplanted in an area surrounding a cement plant (S Italy)

Lucadamo

Corapi

Paoli

et al. 2015

Environ Monit Assess

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show abstract

“…This is likely due in large part to the high sequestration capacity of CKD1 by itself. Additionally, CKD can activate hydration of slag, resulting in the formation of additional reaction products such as calcium silicate hydrate (C-S-H/C-A-S-H) [19,20]. Any calcium containing products have the capacity to absorb CO 2 ; as such, it stands to reason that Mixture 2 had the highest sequestration.…”

Section: Blended Alkaline Wastesmentioning

confidence: 96%

Quantification of CO2 sequestration capacity and carbonation rate of alkaline industrial byproducts

Siriwardena

Peethamparan

2015

Construction and Building Materials

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“…The most common useful applications of CKD are in concrete mixes as cement substitution, soil stabilization, waste treatment and filler material in asphalt mixes. As a stabilizing agent for wastes, the absorptive capacity and alkaline properties of CKD can reduce the moisture content, increasing the bearing capacity and therefore forming an alkaline environment for waste substances (Chaunsali and Peethamparan, 2013;Kunal et al, 2012). Even though significant variation in physical and chemical composition of CKDs obtained from different cement plants has been observed, but as a general rule, the existing cementitious compounds in CKD are about one-third of cementitious compounds in ordinary Portland cement (Sreekrishnavilasam et al, 2007).…”

Section: Introductionmentioning

confidence: 98%

Effect of cement kiln dust on the low-temperature durability and fatigue life of hot mix asphalt

Modarres

Ramyar

Ayar

2015

Cold Regions Science and Technology

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Influence of the composition of cement kiln dust on its interaction with fly ash and slag

Cited by 44 publications

References 17 publications

Spatial variation of eco-physiological parameters in the lichen Pseudevernia furfuracea transplanted in an area surrounding a cement plant (S Italy)

Spatial variation of eco-physiological parameters in the lichen Pseudevernia furfuracea transplanted in an area surrounding a cement plant (S Italy)

Quantification of CO2 sequestration capacity and carbonation rate of alkaline industrial byproducts

Effect of cement kiln dust on the low-temperature durability and fatigue life of hot mix asphalt

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