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The main by-product of a saline water beneficiatioun process currently being evaluated by coal-based industries is ettringite (CaizA114(OH)24-(SO4)h S2HzO). The study is aimed to quantify and explain the benefits of using this alkali waste to ameliorate acidic soils, by comparing its effect on plant growth with those of calcite and gypsum. A four-week growth experiment in a phytotron was conducted with maize (Zea mnys L.) in 1.2 kg pots of acidic, sandy soil using treatment levels of CaCOx, C&O., 2HzO and an ettringite-dominated waste (EW) containing up to 2 g Ca per kg soil.
Cement containing fly ash with good long-term and initial strength
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Conductive carbon-ceramic composites have been prepared from coal tar pitch and a ceramic already molded as a monolith having a honeycomb structure. The material has been obtained by subjecting both components to a heat treatment in N, to a maximum temperature of either 1073 K or 1273 K. The startin
04 By-products related to fuels 96105948 Effect of gra t hite of FeCI,-graphltr lntercalatlon 96/05959 Fullereno production drlven by long.pulses of compounds on the meaop aae development In coal tar pitch near-Infrared laser radlatlon
04 By-products related to fuels ## B6D6966 Kerogrn dlverslty dsmonsVatrd by oxidation. II.