Journal ID : AMA-07-02-2023-12000
[This article belongs to Volume - 54, Issue - 02]
Total View : 366

Title : Laboratory incubation experiment for assessing the suitability of cement kiln dust for soil application

Abstract :

In order to develop an integrated solid waste management strategy for cement factory waste (Cement kiln dust (CKD)), a lab experiment was conducted to study the influence of CKD on soil properties for a duration of 60 days in red (Irugur soil series) and back soils. The results of the study revealed that the application of CKD alone at higher rates (10 t ha-1) had negatively influenced the soil bulk density (increased from 1.45 to 1.48 and 1.40 to 1.47 g/cc in red sandy soil (Irugur soil series) and black cotton soil (Periyanaickenpalayam series), respectively) while the application of CKD at 5 tonnes per hectare along with coir-pith 10 t ha 1 improved the soil bulk density in both the soils (decreased from 1.45 to 1.36 and 1.40 to 1.36 g/cc in red sandy soil (Irugur soil series) and black cotton soil (Periyanaickenpalayam series), respectively). Soil pH was found to increase in red soil (Irugur soil series) (from 7.18 to 8.72) whereas it decreased in black cotton soil (Periyanaickenpalayam series) (from 9.51 to 8.63) due to the application of CKD. Soil salinity was increased in both soils (from 0.19 to 0.99 and 0.35 to 1.15 dS m-1 in red sandy (Irugur soil series) and black cotton soil (Periyanaickenpalayam series), respectively) due to the application of CKD at 10 tonnes per ha of press-mud at the rate of 5 t ha-1. Available N of the soil decreased from 157 t ha-1 to 151 ha 1 ¬in red sandy soil (Irugur soil series) while in black cotton soil (Periyanaickenpalayam series), it does not show any significant difference. The soil available P content in both soils recorded no significant difference. Soil NH4OAc K contents were increased (from 224 to 426 and 352 to 560 t ha) due to the application of CKD at the rate of 10 t ha-1. Application of along with press-mud 5 tonnes ha-1. Soil organic carbon was decreased due to the application of CKD at 10 t ha-1 was on par with the application of CKD at the rate of 5 tonnes per ha. Application of CKD at the rate of 5 t ha-1 along with the application of a recommended dose of FYM increased the soil organic carbon in both soils. The microbial properties of the soil viz., total bacteria, fungi, and, actinomycetes population were found to decrease due to the application of CKD at 10 t ha 1 in both soils. Similarly, the application of CKD at 5 t ha 1 along with green manure at 6.25 t ha-1 increased the bacteria, fungal, and, actinomycetes population. The result indicated that CKD can be recycled in agriculture at a quantity below 5 tonnes per ha with organic amendments without any adverse effect on soil properties.

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