AN IMPROVED METHOD TO STUDY SOLUTE LEACHING IN LARGE UNDISTURBED SOIL COLUMNS NEAR FIELD CAPACITY TOWARD THE GROUNDWATER IN VARIOUS ENVIRONMENTS

2020 ◽  
Vol 15 (1) ◽  
pp. 93-102
Author(s):  
Cristian PĂLTINEANU ◽  
◽  
Andrei VRINCEANU ◽  
Anca-Rovena LĂCĂTUȘU ◽  
Radu LĂCĂTUŞU ◽  
...  
Keyword(s):  
Near Field ◽  
Field Capacity ◽  
Improved Method ◽  
Soil Columns ◽  
Undisturbed Soil ◽  
Solute Leaching

scholarly journals Potassium leaching in different soils as a function of irrigation depths

2016 ◽  
Vol 20 (11) ◽  
pp. 972-977 ◽  
Author(s):  
Walter da C. Mendes ◽  
José Alves Júnior ◽  
Paulo C. R. da Cunha ◽  
Anderson R. da Silva ◽  
Adão W. P. Evangelista ◽  
...  
Keyword(s):  
Field Capacity ◽  
Response Surface Model ◽  
Joint Analysis ◽  
Surface Model ◽  
Source Water ◽  
Soil Columns ◽  
Applied Water ◽  
Undisturbed Soil ◽  
Water Depths ◽  
Different Soils

ABSTRACT Potassium (K) can be easily lost by the leaching process. The objective of this study was to quantify K leaching in clayey and sandy soils under increasing irrigation depths. The experiment was conducted in 2014, in a protected environment, after extraction of undisturbed soil columns, with diameter of 144 mm and height of 300 mm. The columns were arranged in a randomized complete block in a factorial design with three replicates, corresponding to eight treatments: two soil types and four water depths, equivalent to 50, 100, 150 and 200% of the amount of water necessary to bring the soil moisture to field capacity. Potassium chloride, with 58% of K2O, was used as K source. Water replacement in the columns was performed every three days, for a period of 81 days. After conducting joint analysis of the data according to the factor Time, a second-degree response surface model was fitted and line charts were also used to study the factors Time and Water. After the evaluations, it was found that the higher the applied water depth, the greater the percolated amount of the K+ ion.

Measured and Predicted Solute Leaching from Multiple Undisturbed Soil Columns

2002 ◽  
Vol 66 (3) ◽  
pp. 686 ◽  
Author(s):  
S. D. Logsdon ◽  
K. E. Keller ◽  
T. B. Moorman
Keyword(s):  
Soil Columns ◽  
Undisturbed Soil ◽  
Solute Leaching

Measured and Predicted Solute Leaching from Multiple Undisturbed Soil Columns

2002 ◽  
Vol 66 (3) ◽  
pp. 686-695 ◽  
Author(s):  
S. D. Logsdon ◽  
K. E. Keller ◽  
T. B. Moorman
Keyword(s):  
Soil Columns ◽  
Undisturbed Soil ◽  
Solute Leaching

scholarly journals Managed aquifer recharge: study of undisturbed soil column tests on the infiltration and treatment capacity using effluent of wastewater stabilization pond

RBRH ◽  
2018 ◽  
Vol 23 (0) ◽  
Author(s):  
Jaqueline Vígolo Coutinho ◽  
Cristiano das Neves Almeida ◽  
Eduardo Bernardo da Silva ◽  
Catalin Stefan ◽  
Gilson Barbosa Athayde Júnior ◽  
...  
Keyword(s):  
Soil Column ◽  
Managed Aquifer Recharge ◽  
Future Research ◽  
Sewage Effluent ◽  
Ammoniacal Nitrogen ◽  
Aquifer Recharge ◽  
Soil Columns ◽  
Undisturbed Soil ◽  
Coastal Watershed ◽  
Stabilization Pond

ABSTRACT Managed Aquifer Recharge (MAR) is a useful tool for the treatment and use of sewage effluent because it complements conventional treatment, recovers the aquifer and minimizes risk of saltwater intrusion. This study aims to investigate technical data to determine the treatment of wastewater stabilization pond effluent using undisturbed soil columns collected from a coastal watershed study area within the BRAMAR (BRAzil Managed Aquifer Recharge) project. The treatment efficiency was monitored by measuring physico-chemical parameters (BOD 5, COD, DOC, TSS, NH3 and NO3) in two columns filled with undisturbed sandy soil in which sewage effluent was infiltrated under unsaturated condition for 72 days with an average input flow of 10 mm h-1. Results indicated reduction greater than 60% of organic matter, suspended solids and ammoniacal nitrogen. However, high concentrations of nitrate in the outflow were detected originating from nitrification of ammoniacal nitrogen. Moreover, difficulties in relation to soil clogging were observed. Furthermore, this study brought relevant contributions to understanding the influence of the infiltration rate and ability to treat effluent from wastewater stabilization ponds using undisturbed soil columns. Future research should be undertaken to improve the pretreatment methods and the operation of a MAR system in the study area.

scholarly journals Transport and accumulation of heavy metals in undisturbed soil columns

2013 ◽  
Vol 9 (3) ◽  
pp. 187-194
Keyword(s):  
Heavy Metals ◽  
Kola Peninsula ◽  
Forest Floor ◽  
High Capacity ◽  
Soil Columns ◽  
Undisturbed Soil ◽  
Podzolic Soils ◽  
Floor Layer

The podzolic soils of the Kola Peninsula, Russia, have in localised areas been highly contaminated with copper and nickel from smelting activities. Migration and retention of these metals were investigated in undisturbed soil columns irrigated with simulated background and polluted precipitation in order to study the temporal processes of retention and release within the soil. The mineral layers were strongly acidified by the contaminated precipitation. Forest floor layers demonstrated a high capacity to retain input Ni and Cu under all conditions. Mineral layers accumulated some Cu, but released Ni. In general, Ni leached through the soil faster than Cu. Since metals are strongly retained in the forest floor layer, even after reduction or cessation of inputs there may be a significant long–term risk of their leaching to deeper soil and groundwater. This risk cannot be ameliorated without remediative intervention.

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