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Open AccessArticle

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 Wastewater Treatment and Reuse)
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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MDPI and ACS Style

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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