Nitrate uptake improvement by modified activated carbons developed from two species of pine cones

Nunell, Gisel Vanesa; Fernández, María Alejandra; Bonelli, Pablo Ricardo; Cukierman, Ana Lea

doi:10.1016/j.jcis.2014.10.058

Cited by 86 publications

(37 citation statements)

References 50 publications

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“…The flasks were stirred at 140 rpm in a refrigerated incubator at 25 °C during 24 h (TE421 TECNAL). Shortly after that, a supernatant aliquot of each sample was collected and nitrate concentrations (NO 3 ‐ ) were determined by UV Spectrophotometry (UV‐VIS HACH DR 5000), measured in the detection region of 205 nm wavelength, using a standard curve with R 2 = 0.99. All experiments were carried out in duplicate and the adsorbed nitrate percentage (Re%) was calculated by Equation :

R e % = \frac{C_{o} - C_{e}}{C_{e}} \times 100

In which C o is the initial concentration of nitrate and C e is the equilibrium concentration.…”

Section: Methodsmentioning

confidence: 99%

“…The increasing water contamination by nitrates has drawn special attention, since it is becoming a global issue due to its widespread and diversified origins such as its application in nitrogen fertilizers, household, and industrial sewage and deposition from the atmosphere as a result of biological mechanisms of nitrogen fixation by bacteria and algae …”

Section: Introductionmentioning

confidence: 99%

“…Adsorption technology using carbon‐based adsorbents has been successfully used in the removal of different inorganic anions from water, such as nitrate . Among them, activated carbon has been demonstrated to be very efficient in removing a wide variety of contaminants and it has become the most useful adsorbents in water treatment due to its versatility and low cost . Cho et al point out that the surface functional groups of activated carbon can be easily modified, thus rendering it more appropriate to adsorption of specific ionic pollutants.…”

Section: Introductionmentioning

confidence: 99%

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Green synthesis of copper oxide nanoparticles impregnated on activated carbon using Moringa oleifera leaves extract for the removal of nitrates from water

et al. 2018

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The present work aims at impregnating copper oxide nanoparticles (Cu NPs) on activated carbon by means of green synthesis with Moringa oleifera leaf extract to develop a material to remove contaminants from water. The produced materials were characterized by means of their textural (specific surface area), morphological (Transmission Electron Microscopy), and structural (X‐ray Diffraction) properties. Particles size was estimated by Scherrer equation and the elemental copper concentrations were estimated by Total Reflection X‐ray Fluorescence (TXRF). Adsorption experiments, as well as pH, kinetics, and adsorption isotherms studies were carried out with the intent of evaluating the efficiency of nitrate (NO3‐) removal from water. The impregnation efficiency of Cu NPs on activated carbon after the adsorption process was measured by means of TXRF analyses. Characterization results confirmed the formation, impregnation, and stability of copper oxide nanoparticles supported on activated carbon, whose crystallite average size ranged between 6 and 61 nm. The proposed method for the nanoparticles synthesis and impregnation were demonstrated to be simple and eco‐friendly. Impregnated carbons presented significant nitrate removal (about 60 %) thus indicating their potential application in water treatment.

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R e % = \frac{C_{o} - C_{e}}{C_{e}} \times 100

In which C o is the initial concentration of nitrate and C e is the equilibrium concentration.…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Green synthesis of copper oxide nanoparticles impregnated on activated carbon using Moringa oleifera leaves extract for the removal of nitrates from water

et al. 2018

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“…They are mainly composed of cellulose, lignin and resins that contain a variety of organic compounds 37,38 . Porous carbon from pine cone biomass have been extensively studied as biosorbent for metal, dye waste waters, nitrate uptake and removal of lead (II) ions from aqueous solutions by adsorption [39][40][41][42] …”

Section: Introductionmentioning

confidence: 99%

Renewable pine cone biomass derived carbon materials for supercapacitor application

et al. 2016

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The environmental degradation and hazard to human life caused by the depletion of fossils fuels and the urgent need for sustainable energy sources to meet the rising demand in energy has led to the exploration of novel materials that are environmentally friendly, low cost and less hazardous to human life for energy storage application using the green chemistry approach.Herein, we report on the transformation of the readily abundant pine cone biomass into porous carbon via KOH activation and carbonization at 800 °C as electrode materials supercapacitor.The porous carbon material exhibited a mesoporous framework with a specific surface area of

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“…They are mainly composed of cellulose, lignin and resins that contain a variety of organic compounds [28,29]. Although in the course of the literature review porous carbon from pine biomass have been studied extensively as biosorbent for metal, dye waste waters, nitrate uptake and removal of lead (II) ions from aqueous solutions by adsorption [30][31][32], they have never been studied as electrode for electrochemical energy storage to the best of our knowledge.…”

Section: Introductionmentioning

confidence: 99%

Coniferous pine biomass: A novel insight into sustainable carbon materials for supercapacitors electrode

Manyala

Bello

Barzegar

et al. 2016

Materials Chemistry and Physics

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Highlights• Sustainable carbon materials from pine cone biomass.• Hydrothermal treatment of the pine cone to produce hydrochar.• KOH activation and carbonization of the hydrochar to produce porous carbons.• Symmetric supercapacitor based on the porous carbon exhibit good electrochemical performance. Graphical abstract ABSTRACTLow-cost biomass-derived activated porous carbon from natural pine cones is synthesized using hydrothermal approach followed by KOH activation and carbonization. The produced carbon materials have a high surface area of 1515 m 2 g -1 with a well-developed 2 meso/micropores structure which is advantageous and favorable for mass transfer and ion accommodation for fast rate performance by providing pathways for electrolyte permeation and contact probability. Symmetric device fabricated using the obtained carbon material as electrode, exhibited good electrochemical performance with no degradation of capacitance after voltage holding at 1 V for about 60 h demonstrating good rate capability of the fabricated device. The results demonstrate the exciting potential of the pine cone derived carbons as a promising candidate for high-performance electrode materials for supercapacitors if fully explored.

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Nitrate uptake improvement by modified activated carbons developed from two species of pine cones

Cited by 86 publications

References 50 publications

Green synthesis of copper oxide nanoparticles impregnated on activated carbon using Moringa oleifera leaves extract for the removal of nitrates from water

Green synthesis of copper oxide nanoparticles impregnated on activated carbon using Moringa oleifera leaves extract for the removal of nitrates from water

Renewable pine cone biomass derived carbon materials for supercapacitor application

Coniferous pine biomass: A novel insight into sustainable carbon materials for supercapacitors electrode

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