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Query : "coal ash"

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Coal ash management would remain a great concern all over the world. Several studies proposed that there is an ample scope for safe utilization of coal ash as a soil ameliorant that may improve physical, chemical and biological properties of the soil and is a source of readily available plant micro and macro nutrient. With this concept a pot culture experiment was carried out in the eastern gh ...

SUBJECT: psidium guajava; proximate composition; ashes; application rates; nutrients

POSTED TO: Pakistan Journal of Agricultural Sciences (Pakistan) [0552-9034]

Studies on the fusibility of coal ash

Pugal, D.L. et al. [jan-mar1995]

A study, which aims to develop a technology for the preparation of a high quality adsorbent for SOx using coal ash to control air pollution caused by coal-fired thermal power plants in the Philippines, is currently being undertaken jointly by ITDI and HNIRI. During its first year of implementation, the physical, chemical and thermal characteristics of Philippine and Japanese coal ash samples w ...

SUBJECT: charbon; control de la contaminacion; composicion quimica; point de fusion; punto de fusion

POSTED TO: Philippine Technology Journal (Philippines) [0116-7294]

Industrial waste stocks in Kazakhstan significantly increase and only 10-15 % of total generated industrial waste is utilized. The coal ash and phosphogypsum usage as soil fertilizers is appropriate, however, there is a need for additional investigation of ecological risks related with this industrial waste utilization technology. The aim of this research is to investigate the effect of phosph ...

SUBJECT: trigo de primavera; letonia; innocuite des produits alimentaires; heavy metals; aplicacion de abonos

POSTED TO: proceedings of the international scientific conference [1691-5976]

The effects of soil pollution with coal ash on the number and enzymatic activity of soil microorganisms were investigated. Soil samples were treated with three different rates of ash and two rates of nitrogen fertilization. Coal fly ash pollution resulted in increase of soil fungi and cellulolytic microorganisms and the simultaneous decrease of Azotobacter spp. Coal ash enhances the urease act ...

SUBJECT: pot experimentation; fosfatasa ácida; bacteria; rendement des cultures; suelo

POSTED TO: Roczniki Gleboznawcze (Poland) [0080-3642]

In the Philippines, the government has started to impose environmental regulations to keep its environment free from hazardous and toxic elements. Among the detrimental pollutants being looked into, the government is focusing its attention to the hazardous emissions from coal-fired thermal power plants, in particular, to the reduction of SO sub x emissions. ITDIA had developed a process for th ...

SUBJECT: politique de l'environnement; sustancias toxicas; charbon; dioxyde de soufre; substance toxique

POSTED TO: Philippine Engineering Journal (Philippines) [0117-5564]

The paper presents results of studies on the effect of coal ash upon cherry plum and black currant seedlings. It was found that coal ash effect was differentiated. The lowest dose (150 t/ha) stimulated the growth of cherry plum seedlings, while higher doses had an inhibiting effect. Similar effects were observed for black currant. An addition of birch bark did not decrease the negative effects ...

SUBJECT: pot experimentation; croissance; soil; plantule; metodos de ensayo

POSTED TO: Acta Academiae Agriculturae ac Technicae Olstenensis. Agricultura [0860-2832]

Mudpress and coal ash were compared to chicken manure and phenamiphos (Nemacur) for the control of root-knot nematode (Meloidogyne incognita) and their consequent effects on yield of tomato. Chicken manure application increased top and root weights of tomato by 37.0 and 21.1 percent, respectively, compared with the other treatments. However, no significant difference was observed among treatme ...

SUBJECT: desechos industriales; meloidogyne incognita; lycopersicon esculentum; rendement des cultures; control de plagas

POSTED TO: Philippine Journal of Crop Science (Philippines) [0115-463X]

Heavy metals contents in brown coal ash and sand from brown coal mine as well as yields of greenhouse tomatoes and lettuce grown on media with addition of these components were estimated in the study. The results of the study proved that contents of heavy metals, below the level found in non contaminated soils make the sand from brown coal mine and brown coal ash the valuable components of med ...

SUBJECT: plante legumiere; substratos de cultivo; lycopersicon esculentum; charbon; turba

POSTED TO: Zeszyty Naukowe Akademii Rolniczej we Wroclawiu. Rolnictwo (Poland) [0137-1959]

The experimental media comprising peat moss and sand from brown coal mine as well as clay soil, peat and sand from brown coal mine with the addition of 0.5, 10 and 20 percent of brown coal ash. The seedlings of white head cabbage, cucumber and tomatoes were produced in these media. The quality of cabbage and cucumber transplants grown with the addition of 5-20 percent of brown coal ash to the ...

SUBJECT: substratos de cultivo; turba; lycopersicon pimpinellifolium; arena; plantule

POSTED TO: Zeszyty Naukowe Akademii Rolniczej we Wroclawiu. Rolnictwo (Poland) [0137-1959]

There was a greater increase in the yield of vegetable plants (red beet, cabbage, celeriac) when soil limed with Konin (Poland) brown coal ash than when soil was limed with regular limestone. Fine brown coal ash fraction was more effective than the coarse one. Brown coal ashes, used in the same doses as limestone, were more effective in increasing the pH of the soil in the first year of rotati ...

SUBJECT: repollo; sol alluvial; apio-nabo; magnesio; engrais a oligoelements

POSTED TO: Bulletin of Vegetable Crops Research Work [0509-6839]