Mixed Agricultural Pollutant Mitigation Using Woodchip/Pea Gravel and Woodchip/Zeolite Permeable Reactive Interceptors

Ibrahim, Tristan G.; Goutelle, Alexis; Healy, Mark G.; Brennan, Raymond B.; Tuohy, Patrick; Humphreys, J.; Lanigan, Gary; Brechignac, Jade; Fenton, Owen

doi:10.1007/s11270-015-2335-4

Cited by 13 publications

(12 citation statements)

References 24 publications

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“…Edge-of-field interception and treatment of drainage for P removal has great potential but to date, few published studies have examined P removal in woodchip bioreactors. The limited works available have augmented the pure woodchip reactor with various amendments including biochar (Bock et al, 2015), gravel or zeolite (Ibrahim et al, 2015), drinking water treatment residuals (Zoski et al, 2013), or recycled steel byproduct (Hua et al, 2016). These augmentations have been mixed in with the woodchip reactor or designed as a separate compartment of the reactor.…”

Section: Introductionmentioning

confidence: 99%

Impact of temperature and hydraulic retention time on pathogen and nutrient removal in woodchip bioreactors

Soupir

Hoover

Law

et al. 2018

Ecological Engineering

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Woodchip denitrification bioreactors are an important edge-of-field practice for treating agricultural drainage; however, their ability to filter microbial pollutants has primarily been explored in the context of wastewater treatment. Upflow column reactors were constructed and tested for E. coli, Salmonella, NO3-N, and dissolved reactive phosphorus (DRP) at hydraulic retention times (HRTs) of 12 and 24 h and at controlled temperatures of 10 and 21.5 °C. Influent solution was spiked to 30 mg L−1 NO3-N, 2-8 × 105 E. coli and Salmonella, and 0.1 mg L−1 DRP. Microbial removal was consistently observed with removal ranging from 75 to 78% reduction at 10 °C and 90-96% at 21.5 °C. The concentration reduction ranged from 2.75 to 9.03 × 104 for both organisms. HRT had less impact on microbial removal than temperature and thus further investigation of removal under lower HRTs is warranted. Nitrate concentrations averaged 96% reduction (with load removal of 14.6 g N m−3 d−1) from 21.5 °C columns at 24 HRT and 29% reduction (with load removal of 8.8 g N m−3 d−1) from 10 °C columns at 12 HRT. DRP removal was likely temporary due to microbial uptake. While potential for removal of E. coli and Salmonella by woodchip bioreactors is demonstrated, system design will need to be considered. High concentrations of these microbial contaminants are likely to occur during peak flows, when bypass flow may be occurring. The results of this study show that woodchip bioreactors operated for nitrate removal have a secondary benefit through the removal of enteric bacteria.

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Section: Introductionmentioning

confidence: 99%

Impact of temperature and hydraulic retention time on pathogen and nutrient removal in woodchip bioreactors

Soupir

Hoover

Law

et al. 2018

Ecological Engineering

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“…Zeolite also had close sorption properties which ranged from 0.30 mg/g [48] to 0.46 mg/g [49] obtained from the Langmuir isotherm model. In contrast, Ibrahim et al [20] obtained a higher P maximum sorption capacity for zeolite that equalled 18.3 mg/g.…”

Section: Reactive Materials Sorption Limitationsmentioning

confidence: 82%

“…This technology is defined as an emplacement of reactive media in the subsurface designed to intercept a contaminated plume, provide a flow path through the reactive media, and transform the contaminant(s) into environmentally acceptable forms to attain remediation concentration goals downstream of the barrier [18]. Permeable reactive barriers (PRBs) are also listed as an active barrier system [19], permeable reactive interceptors [20], a structure lime drainage system [8] or permeable drainage filters [21]. This method has been developed over the past decade and is used to treat groundwater and subsurface runoff from inorganic constituents such as P [22,23], ammonium [23], and heavy metals [24].…”

Section: Introductionmentioning

confidence: 99%

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

Bus¹,

Karczmarczyk²,

Baryła³

2019

Water

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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.

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“…Overall, the filter materials of the improved subsurface drainage can be sand and gravel, zeolite, straw or woodchip. These materials may influence the processes of nitrogen and phosphorus transfer in the soil and have different effects on reducing the nitrogen and phosphorus contents in the drain outflow [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Study on Characteristics of Nitrogen and Phosphorus Loss under an Improved Subsurface Drainage

Tao

Wang

Guan

et al. 2019

Water

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Agricultural drainage plays an effective role in preventing waterlogging and salinity disasters and also is the main transport pathway for agricultural non-point source pollutants into rivers and lakes. Hence, the water quality of agricultural drainage should be a point of focus. In this paper, nitrogen and phosphorus loss under improved subsurface drainage with different filter materials (gravel, layered sand-gravel, mixed sand-gravel, straw) were studied by a three-year field experiment (2016-2018) compared with the conventional subsurface drainage. The pH values, total nitrogen, ammonia nitrogen, nitrate nitrogen, total phosphorus and soluble reactive phosphate were considered. The results showed that the nitrogen and phosphorus concentrations of drain outflow under improved subsurface drainage with gravel filter were larger than that with layered sand-gravel filter and mixed sand-gravel filter. The improved subsurface drainages with layered sand-gravel filter and mixed sand-gravel filter had an effect on reducing the ammonia nitrogen, total phosphorus and soluble reactive phosphate concentrations of the outflow. Meanwhile, the characteristics of nitrogen and phosphorus loss under the improved subsurface drainage with straw filter were different from that with layered sand-gravel filter and mixed sand-gravel filter. For the improved subsurface drainage with layered sand-gravel filter outflow, the ammonia nitrogen, total phosphorus, and soluble reactive phosphate concentrations were about 13%-78%, 38%-63%, 40%-68% less, and total nitrogen, nitrate nitrogen concentrations were 24%-80%,18%-96% more than that under conventional subsurface drainage. Meanwhile, for the improved subsurface drainage with straw filter outflow, compared with conventional subsurface drainage outflow, the percentage changes of the total nitrogen, nitrate nitrogen, ammonia nitrogen, total phosphorus and the soluble reactive phosphate concentrations were about −76%-62%, −77%-78%, −152%-−274%, −103%-−400% and −221%-−291%, respectively. Additionally, in the outflow of all subsurface drainage patterns, there were much higher total nitrogen and nitrate nitrogen concentrations which should be focused on and the agricultural water management should be adopted.

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Mixed Agricultural Pollutant Mitigation Using Woodchip/Pea Gravel and Woodchip/Zeolite Permeable Reactive Interceptors

Cited by 13 publications

References 24 publications

Impact of temperature and hydraulic retention time on pathogen and nutrient removal in woodchip bioreactors

Impact of temperature and hydraulic retention time on pathogen and nutrient removal in woodchip bioreactors

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

Study on Characteristics of Nitrogen and Phosphorus Loss under an Improved Subsurface Drainage

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