Exploring Nickel Adsorption and Desorption Dynamics in Sandy Clay Loam and Clay Loam Soil
Deleted Journal(2024)
Abstract
This work sheds insight on the dynamics of nickel (Ni) in sandy clay loam and clay loam soil soils by investigating its adsorption and desorption behavior in at different pH level. For this purpose, two different soils were collected from different field areas. Both of these soils were treated with different solutions containing Ni at the rate of 0, 20, 40, 80, 120 and 160 mg Kg−1. To achieve equilibrium, soil samples were incubated for seven days. After equilibrium is attained, filtrate was obtained and analyzed by using Atomic Absorption Spectrophotometer. After that adsorption and desorption statistics were analyzed according to linear form of Freundlich equation and its corresponding adsorption-desorption isotherms were formulated and explained. Adsorption data showed that amount of Ni adsorbed per unit of soil increased progressively with an increase in added Ni, but that increase was linear. Rate of adsorption in clay loam soil was (0.7474) and sandy clay loam soil was (0.5449). If we look toward desorption data, rate of desorption was higher in Sandy clay loam soil (0.5863) as compare to clay loam soils (0.5655). It was concluded that clay loam soil has higher adsorption capacity as compare to sandy clay loam soil due to more affinity. This research lies in the understanding of the adsorption-desorption behavior of nickel in alkaline-calcareous soils, which can have implications for soil management and environmental remediation efforts. Specifically, this research can inform the development of strategies for controlling the accumulation of Ni in soil, reducing its potential toxicity to plants and other organisms. It can also provide insights into the effectiveness of different types of soil for adsorbing and retaining Ni, which can be useful for designing soil-based treatment technologies for contaminated environments. Also, underscore the importance of soil type in Ni management, with potential implications for environmental remediation and soil management practices aimed at controlling Ni accumulation and mitigating its toxicity to ecological systems.
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Key words
Nickel,Adsorption,Desorption,Fixation,Metal
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