The Journal "Agriculture and Forestry"
Časopis "Poljoprivreda i šumarstvo"
- Since 1955 -
Year 2014, Volume 60 Issue 4
| Year : | 2014 |
| Volume : | 60 |
| Issue : | 4 |
| Authors : | Hiromu OKAZAWA and Tomonori FUJIKAWA |
| Title : | NITROGEN ADSORPTION ABILITY IN CLINKER ASH AND UTILIZATION OF NITROGEN−ADSORBED CLINKER ASH TO PROMOTE VEGETATION GROWTH |
| Abstract : | Clinker ash is a type of coal ash that is an industrial by-product from coal thermal power plants. This study clarified the nitrogen adsorption ability of clinker ash by grain size. In addition, the possibility of returning nitrogen-adsorbed clinker ash for crop cultivation was also examined. Clinker ash was sorted by using sieves with mesh sizes of 0.6 mm, 1.15 mm and 2.36 mm. Uncontrolled clinker ash and/or clinker ash of one grain size (130 g) and nitrogen solution (6 L) were put in each tank and the solution was circulated by circulation pump. The hydraulic retention time was 120 seconds. The solution in the tank was circulated for 30 days. The nitrogen concentration of the solution in the tank was measured every 2 to 3 days. The initial nitrogen concentration of the solution was 10 mg/L. Two types of nitrogen were used: NO3-N and NH4-N. After the end of the experiment, the amount of nitrogen adsorbed to the clinker ash was measured. For a vegetation experiment, Japanese mustard spinach was planted on the clinker ash that had been used in the nitrogen adsorption experiment. The stem height of the plant was measured every day. The amount of nitrogen adsorbed by the clinker ash was examined. It was found that clinker ash with smaller grain size adsorbs more NH4-N. In the vegetation experiment for Japanese mustard spinach using nitrogen-adsorbed clinker ash, it was found that the plant cultivated in clinker ash of 0.6 mm in grain diameter showed the greatest growth. |
| For citation : | Hiromu OKAZAWA and Tomonori FUJIKAWA (2014): NITROGEN ADSORPTION ABILITY IN CLINKER ASH AND UTILIZATION OF NITROGEN−ADSORBED CLINKER ASH TO PROMOTE VEGETATION GROWTH. Agriculture & Forestry, Vol. 60 Issue 4: 15-20, 2014, Podgorica |
| Keywords : | Clinker ash, Nitrogen, Adsorption, Reuse, Vegetation growth |
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