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Mitigation of Nitrate Leaching in Tropical Soils using Layered Double Hydroxide

Grant number: 16/18636-7
Support type:Scholarships in Brazil - Doctorate
Effective date (Start): December 01, 2016
Effective date (End): March 07, 2020
Field of knowledge:Agronomical Sciences - Agronomy - Soil Science
Principal researcher:Quirijn de Jong van Lier
Grantee:Ali Mehmandoost Kotlar
Home Institution: Centro de Energia Nuclear na Agricultura (CENA). Universidade de São Paulo (USP). Piracicaba , SP, Brazil
Associated scholarship(s):17/21945-4 - Mitigation of Nitrate Leaching in Tropical Soils using Layered Double Hydroxide, BE.EP.DR


Nitrate is the most intensively applied nutrient to agricultural land. Being a very mobile anion, even more in tropical acidic soils, its leaching contaminates surface and groundwater and causes large financial loss for farmers. The main scope of this proposal is to study an environmentally sustainable concept to intelligently control the movement (leaching) of charged ions, e.g. nitrate, through providing oppositely charged substrate. To inhibit nitrate mobility, layered double hydroxide (LDH) could be an excellent substrate because of their positively charged surfaces and intercalated structures. Easy and low cost large-scale production of LDH by available minerals like iron and manganese are other interesting advantages. In this study, complementary kinetic and equilibrium batch experiments will be performed together with miscible displacement (breakthrough) experiments in soil columns, to quantify the retention and transport of nitrate loaded LDH in soils with different properties. Simultaneously, the dissolution of cations released from LDH and nitrate intercalation and competition with other anions will be observed by XRD patterns and FTIR spectra. The study envisages predictions about the viability of applications on a larger agricultural scale will be inferred from reactive transport modeling, based on obtained reaction data from batch experiments, mechanisms and transport parameters from the soil column studies.

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Scientific publications (6)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
KOTLAR, ALI MEHMANDOOST; PEREIRA DE CARVALHO, HUDSON WALLACE; IVERSEN, BO V.; VAN LIER, QUIRIJN DE JONG. Nitrate leaching from layered double hydroxides in tropical and temperate soils. APPLIED CLAY SCIENCE, v. 184, . (15/05942-0, 16/18636-7)
KOTLAR, ALI MEHMANDOOST; VAN LIER, QUIRIJN DE JONG; BRITO, ERBESSON DE SOUZA. Pedotransfer functions for water contents at specific pressure heads of silty soils from Amazon rainforest. Geoderma, v. 361, . (16/18636-7)
KOTLAR, ALI MEHMANDOOST; VARVARIS, IOANNIS; VAN LIER, QUIRIJN DE JONG; DE JONGE, LIS WOLLESEN; MOLDRUP, PER; IVERSEN, V, BO. Soil Hydraulic Properties Determined by Inverse Modeling of Drip infiltrometer Experiments Extended with Pedotransfer Functions. VADOSE ZONE JOURNAL, v. 18, n. 1, . (16/18636-7)
KOTLAR, ALI MEHMANDOOST; IVERSEN, V, BO; VAN LIER, QUIRIJN DE JONG. Machine Learning-Based Prediction of Drainage in Layered Soils Using a Soil Drainability Index. SOIL SYSTEMS, v. 3, n. 2, . (16/18636-7)
KOTLAR, ALI MEHMANDOOST; VAN UER, QUIRIJN DE JONG; BARROS, ALEXANDRE HUGO C.; IVERSEN, V, BO; VEREECKEN, HARRY. Development and Uncertainty Assessment of Pedotransfer Functions for Predicting Water Contents at Specific Pressure Heads. VADOSE ZONE JOURNAL, v. 18, n. 1, . (16/18636-7)
KOTLAR, ALI MEHMANDOOST; IVERSEN, BO V.; VAN LIER, QUIRIJN DE JONG. Evaluation of Parametric and Nonparametric Machine-Learning Techniques for Prediction of Saturated and Near-Saturated Hydraulic Conductivity. VADOSE ZONE JOURNAL, v. 18, n. 1, . (16/18636-7)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
KOTLAR, Ali Mehmandoost. Mitigation of nitrate leaching in tropical soils using layered double hydroxide. 2020. Doctoral Thesis - Universidade de São Paulo (USP). Centro de Energia Nuclear na Agricultura (CENA/STB) Piracicaba.

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