Comparison of lime and fly ash as amendments to acidic coal mine refusej growth responses and trace-element uptake of two grasses

An appraisal of the potential use of fly ash for reclaiming coal mine spoil

“…Similarly, Jastrow et al (1979) observed that FA amendment alone and in combination with inorganic and organic materials decreased the BD of soil from wasteland, alkaline areas and mine spoil, among others. When FA was applied at a relatively high rate, a notable improvement in the WHC of coarse-textured soils was noted.…”

“…A similar response was not seen when limestone treatment was used. The application of FAs alone to soils ranging from acidic sand to acidic clay has been found to enhance or optimize their pH (Jastrow et al, 1979;McCarty et al, 1994;Tarkalson et al, 2005;Lee et al, 2006). Similarly, adding lime in conjunction with coal and lignite FAs, in combination with other amendments (at different doses), such as farmyard manure (FYM), sewage sludge, paper mill sludge and lime mud raised the pH in a variety of acidic soils (Wong and Lai, 1996;Anguissola Scotti et al, 1999;CFRI, 2000aCFRI, , b, 2001aCFRI, , b, 2002aUlrichs et al, 2005;Ram et al, 2007b).…”

The use of coal fly ash in sodic soil reclamation

“…Fly ash amendment of soils increased the plant production in most of the cases when nutrient deficiencies are corrected by the addition of fly ash (Adriano et al, 1980). In several studies, B, S, Se, Mo and Al concentrations in plants have consistently increased in response to fly ash addition (Adriano et al, 1980;Jastrow et al, 1979;Taylor and Schuman, 1988;Kukier et al, 1994). The increased B and Al concentrations may result in plant toxicity while Se and Mo may accumulate without harming them.…”

“…The increased B and Al concentrations may result in plant toxicity while Se and Mo may accumulate without harming them. Then these levels may become toxic to livestock grazing the plants (Adriano et al, 1980;Jastrow et al, 1979;Nass et al, 1993).…”

Ολοκληρωμένη Διαχείριση Στερεών Αποβλήτων Από Μονάδες Παραγωγής Ηλεκτρικής Ενέργειας

“…Το υψηλό pH της ιπτάµενης τέφρας όταν έρχεται σε επαφή µε το νερό µπορεί να χρησιµοποιηθεί για την εξουδετέρωση όξινων εδαφών[90,91]. Σύµφωνα µε τους Jastrow et al[92] η προσθήκη ιπτάµενης τέφρας όχι µόνο βελτιώνει το pH του εδάφους αλλά επιπροσθέτως εµπλουτίζει το έδαφος µε θρεπτικά συστατικά. Σύµφωνα µε τους Page et al[93] η προσθήκη ιπτάµενης τέφρας σε ασβεστούχα και όξινα εδάφη αυξάνει το pH από 8 σε 10.4 στην πρώτη περίπτωση και από 5.4 σε 9.9 στη δεύτερη.…”