Abstract
Reclamation of saline sodic soils is a main problem at most of arid lands. Improving soil properties with waste materials has been investigated earlier but the effect of these materials on saline sodic soils is not fully known. A fly ash and sewage sludge mixture was applied to saline sodic soils with the intention of soil reclamation and eco-friendly waste recycling. Fly ash and sewage sludge mixtures were applied at a ratio of 1:1 to soils with three different levels of electrical conductivity (EC) and exchangeable sodium percentage (ESP) (soil I: 4.27 dS m−1, 6.09%; soil II: 73.20 dS m−1, 51.03%; soil III: 38.2 dS m−1, 86.2%) at 3 different doses, that is, 40, 80, and 120 t ha−1. Saturated hydraulic conductivity and porosity generally increased in all the soils tested, whereas bulk density and pH decreased. ESP and EC values of the amended layers decreased considerably with the application of increasing doses of waste material. These results indicate that when properly applied, two industrial residues, sewage sludge and fly ash, that are associated with a negative environmental impact, can be recycled allowing for the cheap reclamation of barren saline sodic soil.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
