Assessment of heavy metals and rheological characteristics of coal ash samples in presence of some selective additives

Pani, G. K.; Rath, Prasanta; Maharana, L; Barik, Rasmita; Senapati, Pradipta Kumar

doi:10.1007/s13762-015-0888-9

Cited by 4 publications

(4 citation statements)

References 15 publications

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“…This happens due to the formation of the additive layer over the surface of solid particles which prevents the leaching of traced elements. As the pH value of slurry suspension increases that contribute to the decreasing of leaching of traced elements (Pani et al 2016;Singh et al 2016). It was also found that the maximum reduction in the leaching concentration rate of all traced elements in bottom ash samples was found with 0.4% addition of additive whereas marginal reduction was observed with 0.2% and 0.6%.…”

Section: Resultsmentioning

confidence: 82%

Potential Risk by Disposal of Bottom Ash from Thermal Power Plants and Minimization by Addition of NaHCO3

Singh

Kumar

Mohapatra

2018

Bull Environ Contam Toxicol

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In the present study, the leachability of traced elements from the bottom ash of three different Indian power plants was investigated. Environmental impact of bottom ash was studied by varying the liquid-to-solid (L/S) ratio from 20:1 to 60:1. Leaching results show the presence of a major proportion of elements Mn, Mg, Cr, Zn and Cu and a minor proportion of Pb, Fe, Co, and Mo. The effect of the addition of sodium bicarbonate (NaHCO 3 ) on leaching characteristics of bottom ash was also studied. Leaching concentration of bottom ash samples reduces with addition of additive from 0.2% to 0.6% and found to be optimum with 0.4% the addition of additive. This aspect of the investigation helps to design the ash disposal system for higher solid concentrations to minimize the environmental pollution.

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Section: Resultsmentioning

confidence: 82%

Potential Risk by Disposal of Bottom Ash from Thermal Power Plants and Minimization by Addition of NaHCO3

Singh

Kumar

Mohapatra

2018

Bull Environ Contam Toxicol

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“…Our diets include many substances which can cause fatigue and exhaustion. Taken regularly, Aloe vera juice ensures a greater feeling of well-being, allowing energy levels to increase and also helps maintain a healthy body weight, (Lad et al, 2013;Kumbhar et al, 2015;Pani et al, 2016)…”

Section: Increases Energy Levelsmentioning

confidence: 99%

Recent update on the medicinal properties and use of Aloe vera in the treatment of various ailments

Mahor¹,

Ali²

2016

Biosci. Biotech. Res. Comm

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Aloe vera (Aloe barbadensis) an herb is widely used in Ayurvedic, Homoeopathic and Allopathic streams for its marvelous medicinal properties. This plant is one of the richest natural sources of health for mammals including human beings. The chemistry of the plant has revealed the presence of more than 200 different biologically active substances, which include antimicrobial, antibacterial, antifungal, antiviral, activities of the nonvolatile constituents of the leaf gel. Aloe species are widely distributed in the African and the eastern European continents, and are spread almost throughout the world. The genus Aloe has more than 400 species but few, such as A. vera, Aloe ferox, and Aloe arborescens, are globally used for trade. Many biological properties associated with Aloe species are contributed by inner gel of the leaves. anti diabetic, anti-infl ammatory, peptic ulcers, antitumor, anticancer Properties, activity effects on the Immune System, adverse reactions, Laxative effects, wound healing, antiseptic, vitamins, minerals, enzymes, amino acids, stress, sugars. It is known to help slow down the appearance of wrinkles and actively repair the damaged skin cells that cause the visible signs of aging. Aloe is a powerful detoxifi er, antiseptic and tonic for the nervous system. Aloe vera gel contains a large range of vitamins even vitamin B12, Vitamin A, contains B-Group vitamins, Vitamin C, Vitamin E and folic acid. Aloe vera gel contains important ingredients including 19 of the 20 amino acids needed by the human body and seven of the eight essential ones that just cannot be made. The plant leaves and inner gel contains numerous help it has potential to cure sunburns and minor cuts, and even skin cancer and acts as also acts as extremely powerful laxative. Various parts of the plant have different effects on the body. The present review is an attempt to highlight the proven research related botanical and pharmacological medicinal properties of Aloe vera.

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“…Co-disposal of different kinds of waste without knowing their leaching characteristics may pose a threat to environment, for example, the disposal of ash in an acidic environment increased the leaching of heavy metals and contaminated the ground water at the disposal site [9]. For this reason, leaching/extraction tests are commonly applied because they provide information about the potential release of constituents from solid materials to the liquid phase [10].…”

Section: Introductionmentioning

confidence: 99%

Release of Trace Elements from Bottom Ash from Hazardous Waste Incinerators

et al. 2018

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Bottom ash is the major by-product of waste incineration and can contain trace elements (As, Cd, Co, Cu, Cr, Mo, Ni, Pb, and Zn) with concentrations up to thousands of mg·k −1 . In this study, a combination of different extractions and leaching tests (i.e., CH 3 COOH and ammonium-EDTA (Ethylenediaminetetraacetic acid) extractions and pH stat leaching tests) was used to investigate the potential release of trace elements from bottom ash samples derived from hazardous waste incineration plants. Although large variations have been found in the release of trace elements by different extractions, in general, the highest concentrations of most trace elements (except As and Mo) were released with the CH 3 COOH extraction, whereas the release of As and Mo was highest with the ammonium-EDTA extraction. Kinetics of element release upon acidification based on a pH stat leaching test at pH 4 could be related to the solid-phase speciation of some selected trace elements. The relatively high-potential mobility and elevated total concentrations of some trace elements imply a threat to the environment if these bottom ashes are not treated properly. Results of the present study may be useful to develop potential treatment strategies to remove contaminants and eventually recover metals from bottom ash.

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Assessment of heavy metals and rheological characteristics of coal ash samples in presence of some selective additives

Cited by 4 publications

References 15 publications

Potential Risk by Disposal of Bottom Ash from Thermal Power Plants and Minimization by Addition of NaHCO3

Potential Risk by Disposal of Bottom Ash from Thermal Power Plants and Minimization by Addition of NaHCO3

Recent update on the medicinal properties and use of Aloe vera in the treatment of various ailments

Release of Trace Elements from Bottom Ash from Hazardous Waste Incinerators

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