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Long-time effect of hard coal ash on the content of some elements in soil

Wyszkowski M., Chełstowski A., Ciećko Z., Szostek R.

Journal of Ecological Engineering

2014

Vol. 15, nr 1

55-60

The aim of the study was to determine the long-time effect of meliorating doses of hard coal ash (0, 100, 200, 400, 600 and 800 t ha-1) on the content of some elements in soil with the application of different organic substances: manure, straw and bark. Nineteen years after the application of ash there was still an increase in the total content of all elements in soil. Its magnitude depended on soil horizon and it was highest in the humus horizon. The increase in the content of nutrients was, in general, proportional to the applied doses of ash. In the surface layer of soil, the increase was particularly high for sodium and subsequently for calcium, magnesium, sulphur, potassium and phosphorus, arranged in the order of decreasing values. The content of elements in deeper soil layers was significantly lower than in the 0–25 cm zone. A gradual reduction in the content, together with the increase in depth, was recorded only for magnesium and sulphur. The lowest concentration of phosphorus and calcium was detected in the 51–75 cm layer, while in the case of potassium it was in the 26–50 cm zone. The substances introduced into the soil in order to reduce the impact of ash generated by hard coal combustion did not exert any significant impact on the content of elements 19 years following their application.

Long-Time Effect of Hard Coal Fly Ashes Application on Nitrogen Content in the Soil

Ciećko Z., Żołnowski A., Ostrowska E., Chełstowski A.

Ecological Chemistry and Engineering. A

2010

Vol. 17, nr 7

747-755

The paper discusses the long-term effect of hard coal fly ashes on the content of some nitrogen forms in soil. The study was based on a field experiment 19 years after it had becn established. Fly ashes were dosed at rates of O, 100, 200, 400, 600 and 800 Mg ha-1, in the following four series: without organic substance, with farmyard manure, with straw and with trec bark. The results seem to prove that hard coal fly ashes as well as organic fertilizers applied in addition to fly ashes had a significant influence on the long-term content of the analyzed forms of nitrogen in soil. The effect of fly ashes was particularly evident in the arable horizon of the analyzed soil. In deeper soil layers, fly ashes were found to have no influence on the content of the analyzed nitrogen forms. Among the organic amendments tested in the experiment, irrespective of the depth at which soil samples were taken, tree bark had the strongest influence on N-NO3. increasing its content. With respect to N-NH4, the strongest influence on its content was produced by straw.

Pracę poświęcono wyjaśnieniu następczego oddziaływania popiołów z węgla kamiennego na zawartość wybranych form azotu w glebie. Badania wykonano, korzystając z doświadczenia polowego po 19 latach od jego założenia. Popioły stosowano w dawkach 0, 100, 200, 400, 600 i 800 Mg o ha-1 z uwzględnieniem czterech serii: bez dodatku substancji organicznej, z obornikiem, ze słomą i z korą drzewną. Uzyskane wyniki badań wskazują, że popioły z węgla kamiennego oraz wprowadzane wraz z nimi dodatki nawozów organicznych znacznie wpłynęły na długookresowe kształtowanie się zawartości badanych form azotu w glebie. Działanie popiołów uwidoczniło się przede wszystkim w warstwie ornej badanej gleby. W głębszych warstwach nie stwierdzono wpływu popiołów na zmiany zawartości badanych form azotu. Spośród zastosowanych dodatków organicznych niezależnie od poziomu pobrania próbek gleby na zawartość N-NO3 najsilniej wpływała kora drzewna, powodując wzrost jego ilości. W odniesieniu do formy N-NH4 najsilniejszy wpływ na zawartość tej formy azotu miała słoma.