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Permeable Reactive Barriers for Preventing Water Bodies from a Phosphorus-Polluted Agricultural Runoff-Column Experiment

Faculty of Civil and Environmental Engineering, Department of Environmental Improvement, Warsaw University of Life Sciences—SGGW, Nowoursynowska 166, 02-787 Warsaw, Poland
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Water 2019, 11(3), 432; https://doi.org/10.3390/w11030432
Received: 21 December 2018 / Revised: 14 February 2019 / Accepted: 24 February 2019 / Published: 28 February 2019
(This article belongs to the Section Water and Wastewater Treatment)
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Abstract

This paper aims to examine the potential of permeable reactive barriers (PRBs) as an in-situ removal approach for phosphate polluted agricultural runoff. Four different reactive materials (RMs) of: autoclaved aerated concrete (AAC), Polonite®, zeolite and limestone were tested. The study was conducted as a column experiment with a sandy loam soil type charging underlying RM layers with phosphorus (P) and a soil column without RM as a reference. The experiment was carried out over 90 days. During this time the P-PO4 load from the reference column equaled 6.393 mg and corresponds to 3.87 kg/ha. Tested RMs are characterized by high P-PO4 retention equaling 99, 98, 88 and 65% for Polonite®, AAC, zeolite and limestone, respectively. At common annual P loss rates of 1 kg/ha from intensively used agricultural soils, the PRB volume ranged from 48 to 67 m3 would reduce the load between 65 and 99% for the RMs tested in this study. View Full-Text
Keywords: agricultural areas; diffuse pollution; phosphorus permeable reactive barrier; reactive material; surface and subsurface runoff agricultural areas; diffuse pollution; phosphorus permeable reactive barrier; reactive material; surface and subsurface runoff
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Bus, A.; Karczmarczyk, A.; Baryła, A. Permeable Reactive Barriers for Preventing Water Bodies from a Phosphorus-Polluted Agricultural Runoff-Column Experiment. Water 2019, 11, 432.

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