Trickling filter technology for biotreatment of nitrogenous compounds emitted in exhaust gases from fishmeal plants

Oyarzún, Patricio; Alarcón, Lissete; Calabriano, Guillermo; Bejarano, Jesús Antonio; Núñez, Dariela; Ruiz‐Tagle, Nathaly; Urrutia, Homero

doi:10.1016/j.jenvman.2018.11.008

Cited by 35 publications

(12 citation statements)

References 32 publications

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“…The main applications of polyurethane foams in environmental protection involve cultivation of microorganisms immobilized in PUF matrices [3][4][5][6], immobilization of active enzymes in the foam [1,7], biological treatment of exhaust gases, e.g., ammonia [8,9], and removal of NH 4 + from industrial wastewater [10]. There are numerous research papers describing the ways microorganisms may colonize polyurethane foams in laboratory scale cultures.…”

Section: Introductionmentioning

confidence: 99%

Polyurethane Foams for Domestic Sewage Treatment

Dacewicz

Grzybowska-Pietras

2021

Materials

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The aim of the study was to assess the possibility of using polyurethane foams (PUF) as a filling of a foam-sand filter to directly treat domestic sewage with increased content of ammonium nitrogen and low organic carbon to nitrogen ratio (C/N). The study compared performance of two types of flexible foams: new, cylinder-shaped material (Novel Foams, NF) and waste, scrap foams (Waste Foams, WF). The foams serving as a filling of two segments of a foam-sand filter were assessed for their hydrophobic and physical properties and were tested for their cell structure, i.e., cell diameter, cell size distribution, porosity, and specific surface area. The study accounted also for selected application-related properties, such as hydrophobicity, water absorption, apparent density, dimensional stability, amount of adsorbed biomass, and the possibility of regeneration. Cell morphology was compared in reference foams, foams after 14 months of the filter operation, and regenerated foams. The experimental outcomes indicated WF as an innovative type of biomass carrier for treating domestic sewage with low C/N ratio. SEM images showed that immobilization of microorganisms in NF and WF matrices involved the formation of multi-cellular structures attached to the inner surface of the polyurethane and attachment of single bacterial cells to the foam surface. The amount of adsorbed biomass confirmed that the foam-sand filter made up of two upper layers of waste foams (with diameters and pore content of 0.50–1.53 mm and 53.0–63.5% respectively) provided highly favorable conditions for the development of active microorganisms.

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Section: Introductionmentioning

confidence: 99%

Polyurethane Foams for Domestic Sewage Treatment

Dacewicz

Grzybowska-Pietras

2021

Materials

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“…There are many techniques to overcome the excessive NH 3 –N pollution in the fish farm setting, such as electrocoagulation [ 8 ], trickling filtration [ 9 ], aerated filtration [ 10 ], etc. Due to the complexity and expensive equipment required, they are nearly inaccessible for fish farmer in developing countries.…”

Section: Introductionmentioning

confidence: 99%

Polyurethane film prepared from ball-milled algal polyol particle and activated carbon filler for NH3–N removal

Marlina

Iqhrammullah

Saleha

et al. 2020

Heliyon

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This research offers a novel approach of free chemical preparation to obtain algae-based biopolyol through a ball milling method. The algae-based polyurethane (AlgPU) film was obtained from a casting solution made of ball-milled algal polyol particle and methylene diphenyl diisocyanate (MDI). The characteristics of the material had been investigated using Fourier Transform Infrared, Scanning Electron Microscopy – Electron Dispersive Spectroscopy, Differential Scanning Calorimetry, and Tensile Strength Analysis. The surface area was determined by Brunauer–Emmett–Teller (BET) isotherm, meanwhile the total pore volume was by Barrett-Joyner-Halenda (BJH) isotherm, based on the adsorption-desorption of N 2 . The addition of activated carbon contributed in the increase of functional group and surface area, which were important for the NH 3 –N removal. As a result, the adsorption capacity increased greatly after the addition of activated carbon (from 187.84 to 393.43 μg/g). The results also suggested AlgPU as a good matrix for immobilizing activated carbon filler. The adsorption shows a better fit with Langmuir isotherm model, with R 2 = 0.97487 and root-mean-square error (RMSE) = 33.91952, compared to Freundlich isotherm model (R 2 = 0.96477 and RMSE = 44.05388). This means the NH 3 –N adsorption followed the assumption of homogenous and monolayer adsorption, in which the maximum adsorption was found to be 797.95 μg/g. This research suggests the potential of newly developed material for NH 3 –N removal.

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“…Consequently several stringent environmental regulations have been promulgated, which do require an appropriate treatment of gaseous emissions, including ammonia (NH 3 ), considering the respective toxicity and environmental concerns [1][2][3]. Gaseous ammonia is typically emitted from several sources including fertilizer industry [4], wastewater treatment plants [2,5], agricultural practices [6], animal feeding setups [7,8], dairy/poultry industries [9,10], composting facilities [11,12], fishmeal plants [13], gasoline vehicles [14], and from specific chemical industries [15]. Considering the respective toxicity and health concerns, various technologies have been employed for the removal of gaseous ammonia including bio-filters [3,13,16,17], catalytic systems [18] biological treatment [11], scrubbers [5] and other specific technologies such as nano-particles applications [4].…”

Section: Introductionmentioning

confidence: 99%

Treatment of Gaseous Ammonia Emissions Using Date Palm Pits Based Granular Activated Carbon

Vohra

2020

IJERPH

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The present work investigated the application of granular activated carbon (GAC) derived from date palm pits (DPP) agricultural waste for treating gaseous ammonia. Respective findings indicate increased breakthrough time (run time at which 5% of influent ammonia is exiting with the effluent gas) with a decrease in influent ammonia and increase in GAC bed depth. At a gas flow rate of 1.1 L/min and GAC column length of 8 cm, the following breakthrough trend was noted: 1295 min (2.5 ppmv) > 712 min (5 ppmv) > 532 min (7.5 ppmv). A qualitatively similar trend was also noted for the exhaustion time results (run time at which 95% of influent ammonia is exiting with the effluent gas). The Fourier Transform Infrared Spectroscopy (FTIR) findings for the produced GAC indicated some salient functional groups at the produced GAC surface including O–H, C–H, C–O, and S=O groups. Ammonia adsorption was suggested to result from its interaction with the respective surface functional groups via different mechanisms. Comparison with a commercial GAC showed the date palm pits based GAC to be having slightly higher breakthrough and exhaustion capacity.

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Trickling filter technology for biotreatment of nitrogenous compounds emitted in exhaust gases from fishmeal plants

Cited by 35 publications

References 32 publications

Polyurethane Foams for Domestic Sewage Treatment

Polyurethane Foams for Domestic Sewage Treatment

Polyurethane film prepared from ball-milled algal polyol particle and activated carbon filler for NH3–N removal

Treatment of Gaseous Ammonia Emissions Using Date Palm Pits Based Granular Activated Carbon

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