The field monitoring of the climatic-induced behaviour expansive soil has always been difficult, expensive and time consuming. uncontrollability boundary conditions difficulty in accurately measuring them have worsened problem. As an alternative, instrumented model set-ups are ideal for long-term soils since laboratory compacted become environmentally stabilised after few wet–dry cycles. There ...

The soil remediation at a contaminated site requires knowledge of contaminant transport parameters and processes. This paper presents the determination from column leaching tests in context with two techniques i.e., washing immobilization. To evaluate technique, on polluted were conducted diluted acid solutions hydrochloric acid, ethylene diamine tetraacetic ferric chloride to efficiencies sele...

1986). In contrast, an apparent disagreement may be produced by applying an equilibrium model to data This study reconciles an apparent inconsistency between the dialthough sorption equilibrium was not reached within methylphthalate (DMP) batch and column data reported in the literature. Some researchers found that retardation coefficients obtained the time scale of the batch or column experime...

Atrazine transport through packed 10 cm soil columns representative of the 0-10 cm soil horizon was observed by measuring the atrazine recovery in the total leachate volume, and upper and lower soil layers following infiltration of 7.5 cm water using a mechanical vacuum extractor (MVE). Measured recoveries were analyzed to understand the influence of infiltration rate and delay time on atrazine...

Bacteria transport in soils primarily occurs through soil mesopores and macropores (e.g., biopores and cracks). Field research has demonstrated that biopores and subsurface drains can be hydraulically connected. This research was conducted to investigate the importance of surface connected and disconnected (buried) biopores on Escherichia coli (E. coli) transport when biopores are located near ...

A laboratory experiment was performed to examine the impact of simulated acid rain (SAR) on nutrient leaching, microbial biomass, and microbial activities in a lateritic red soil in South China. The soil column leaching experiment was conducted over a 60-day period with the following six SAR pH treatments (levels): 2.5, 3.0, 3.5, 4.0, 4.5, and 5.0 and one control treatment (pH = 7). Compared wi...