Potential of fly ash utilisation in India

Bhattacharjee, Ujjwal; Kandpal, Tara C.

doi:10.1016/s0360-5442(01)00065-2

Cited by 143 publications

(59 citation statements)

References 6 publications

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“…2). Additionally the reduction of CO 2 -uptake might be caused by stomata clogging, because PM 2.5 is more likely to penetrate B. chinensis stomata than PM 10 .…”

Section: Discussionmentioning

confidence: 99%

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Hard Coal Fly Ash and Silica-Effect of Fine Particulate Matter Deposits on <i>Brassica chinensis</i>

Ulrichs¹,

Schmidt²,

Mucha-Pelzer³

et al. 2009

American Journal of Agricultural and Biological Sciences

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Problem statement: One focus in recent atmospheric pollution research is on fine Particle Matter (PM), especially as result of increasing traffic and anthropogenic activity in urban areas. Here, the impact on animal and human health has been in the center of many studies. Despite the fact that PM depositions can affect plants on the long term, there are only few studies about the impact on plants conducted. Approach: Therefore we studied the impact of PM on plants, using naturally occurring silica dusts (diatomaceous earth) and hard Coal Fly Ash (CFA) from burning processes. Dusts were applied onto Brassica chinensis L. using a simple duster (covering upper leaf surfaces) or electrostatically (covering leaf upper and -underside). Results: Main components of the tested CFA are SO 4 2-, K, Ca and NH 4+ . The pH value of eluates was found to be around 9.5 in CFA and 5.7 in silica. B. chinensis was insensitive towards the high pH and showed no growth reduction when grown in silica or CFA substrate. PM deposition on leaf surfaces results through shading in a reduced photosynthetic activity. The reduction is relatively higher at higher light intensities. Photosynthesis stays reduced after removal of silica PM from leaf surfaces. We assume that stomata get cloaked by small particles and that silica absorbs lipids from the epicuticle resulting in a general stress reaction. Smaller sized silica particles resulted in a higher reduction of CO 2 -absorption. Next to particle size is the photosynthesis negatively correlated with exposure time for silica PM. The chlorophyll fluorescence data indicate that dust-covered leaves exhibited significantly lower quantum yield of PS II and a reduced quantum efficiency of PS II and therefore supported the gas exchange data. Conclusion: Reduced photosynthetic performance would be expected to reduce growth and productivity of B. chinensis. In contrast to silica hard coal fly ash showed only a reduction of photosynthesis through shading but did not have any long time effects after washing them off.

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“…2). Additionally the reduction of CO 2 -uptake might be caused by stomata clogging, because PM 2.5 is more likely to penetrate B. chinensis stomata than PM 10 .…”

Section: Discussionmentioning

confidence: 99%

“…In India the figure was about 90 million ton during 1995 and is likely to exceed 140 million tons in 2020 [9] . Percentage utilization of fly ash differs between countries between 95% in Belgium and the Netherlands [10] and 3% in India in the 1990s [11] . The low level of utilization is contributed to a lack of cost effective-technologies.…”

Section: Introductionmentioning

confidence: 99%

Hard Coal Fly Ash and Silica-Effect of Fine Particulate Matter Deposits on <i>Brassica chinensis</i>

Ulrichs¹,

Schmidt²,

Mucha-Pelzer³

et al. 2009

American Journal of Agricultural and Biological Sciences

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“…However, more than 95% of total fly ash produced in Germany, Holland and Belgium is used, and about 50% in England. Bhattachariee and Kandpall (2002) point out in their studies that large quantities of fly ash are produced in the US and China, and about 32% and 40% respectively of the produced pheasant [10]. Tokyay (1993) stated that the use of fly ash in Turkey is less than 1% when the 1990 data are taken into consideration [11].…”

Section: Fly Ashmentioning

confidence: 99%

Investigating of Mechanical Properties of Mortars Based on Fly Ash and Blast Furnace Slag Activated with Alkali

Sevim¹,

Filazi²,

Toprak³

et al. 2017

IJAERS

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“…In the current state, the utilization of CFA is carried out mainly in the field of architectural materials [4,5], however, these materials are with low valued. High-value utilizations of CFA, such as soil reclamation, wastewater treatment and extraction of valuable metals have been applied in the industrial applications which are proved to be essentially useful [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Recovery of Alumina from Coal Fly Ash by CaCl2 Calcination Followed by H2SO4 Leaching

Sun¹,

Liang²,

Fangyan³

2017

J Environ Anal Toxicol

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Potential of fly ash utilisation in India

Cited by 143 publications

References 6 publications

Hard Coal Fly Ash and Silica-Effect of Fine Particulate Matter Deposits on <i>Brassica chinensis</i>

Hard Coal Fly Ash and Silica-Effect of Fine Particulate Matter Deposits on <i>Brassica chinensis</i>

Investigating of Mechanical Properties of Mortars Based on Fly Ash and Blast Furnace Slag Activated with Alkali

Recovery of Alumina from Coal Fly Ash by CaCl2 Calcination Followed by H2SO4 Leaching

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