Pineapple peel biochar and lateritic soil as adsorbents for recovery of ammonium nitrogen from human urine

Otieno, Austine O.; Home, Patrick G.; Raude, James M.; Murunga, Sylvia I.; Ngumba, Elijah; Ojwang, Dickson O.; Tuhkanen, Tuula

doi:10.1016/j.jenvman.2021.112794

Cited by 27 publications

(8 citation statements)

References 73 publications

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“…PET200 material had a high O/C ratio (0.4) as suggested by the elemental analysis (Table S1), and the FTIR spectra demonstrated that they showed peaks at 1721 and 1240 cm −1 assigned to CO and C−O groups, respectively (Figure 6a), which have been proved as the main functional groups involved in sorbing NH 4 + −N. 35 Moreover, these functional groups contributed to the negative charges on their surfaces, with the contents of negative charges being comparable for PET10 and PET200 (Figure 6d). The negative charges on their surface could enhance their interaction with NH 4 + −N via electrostatic attraction interaction, which was supported by the result that the negative charges on the surface of both PET10 and PET200 were clearly reduced after NH 4 + −N sorption (Figure 6d).…”

Section: ■ Discussionmentioning

confidence: 91%

“…The higher adsorption capacity of PET10 and PET200 than that of polyethylene could be ascribed to more abundant oxygen-containing functional groups and negative charges on their surface. PET200 material had a high O/C ratio (0.4) as suggested by the elemental analysis (Table S1), and the FTIR spectra demonstrated that they showed peaks at 1721 and 1240 cm –1 assigned to CO and C–O groups, respectively (Figure a), which have been proved as the main functional groups involved in sorbing NH 4 + –N …”

Section: Discussionmentioning

confidence: 94%

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Polyester Microplastic Mitigated NH₃ Volatilization from a Rice–Wheat Rotation System: Does Particle Size or Natural Aging Effect Matter?

Han

Chen

et al. 2022

ACS Sustainable Chem. Eng.

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Microplastics (MPs) accumulation in agricultural soils has shown serious implications for soil ecosystem functions. Ammonia (NH3) volatilization is a major pathway of nitrogen loss in agricultural systems, while its response mechanism to MPs occurrence, particularly the role of MPs size and natural aging, has been scarcely explored. In this study, polyethylene terephthalate of sizes of 10 μm (PET10) and 200 μm (PET200) were selected in a rice–wheat rotation cycle soil system. Results showed that PET10 and PET200 reduced soil NH3 volatilization cumulative amount from 58.9 to 18.6–40.3 kg N/ha and yield-scaled loss from 2.95 to 0.92–1.60 kg/t grain. Reduction of NH3 volatilization occurred in both the rice growth season and the subsequent wheat growth season, in which two MPs were aged in the initial rice season, with verification by 2.8 wt % more bulk oxygen of PET200 separated from the soil after rice harvest. Moreover, PET200 treatment showed 7.7–25.9% less cumulative NH3 volatilization than PET10, which was significant in the rice growth season. This was partially related to the higher adsorption capacity (10.6 mg/g) for free NH4 +–N of PET200 and 5.2% more microaggregate (<250 μm) formation in PET200 treatment. These findings provide references for the assessment of MPs effects on soil nitrogen biogeochemical cycling.

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Section: ■ Discussionmentioning

confidence: 91%

Section: Discussionmentioning

confidence: 94%

Polyester Microplastic Mitigated NH₃ Volatilization from a Rice–Wheat Rotation System: Does Particle Size or Natural Aging Effect Matter?

Han

Chen

et al. 2022

ACS Sustainable Chem. Eng.

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“…We next evaluated adsorption isotherm models for the association of ammonium ions with BNPP. Adsorption isotherms provide additional insights into the mechanism of the adsorbent–adsorbate interaction considering surface properties and affinity of the interacting partners . Three commonly used isotherm models, namely, the Langmuir, Freundlich, and Temkin were applied on the experimental adsorption data. , The Langmuir isotherm model is used for the estimation of maximum adsorption capacity corresponding to complete monolayer adsorption onto the homogeneous surface of an adsorbent, having sites with equal energy that are also equally available for adsorption.…”

Section: Resultsmentioning

confidence: 99%

Banana Peel Powder as an Effective Multilayer Adsorbent of Ammonium Ions

Singh

Datta

2022

Ind. Eng. Chem. Res.

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The recovery of ammonium ions or ammonia from wastewater using bioadsorbents offers an attractive sustainable route to nitrogen reuse and environmental remediation. In this work, we have studied the ability of banana peel powder (BNPP) for adsorption of ammonium ions. The prepared BNPP was characterized by Fourier transform infrared spectroscopy, field emission scanning electron microscopy, energy-dispersive X-ray spectroscopy, and thermogravimetric analysis. Structural and morphological features of BNPP were connected to the observed NH 4 + adsorption. The adsorption kinetics was found to fulfil pseudo-first-order and pseudo-second-order models while adsorption isotherms were fit adequately by Langmuir and Freundlich models. Accordingly, the adsorption of NH 4 + on BNPP is predominantly controlled by physical adsorption that enables chemisorption in a time-bound manner. The maximum adsorption capacity of BNPP was 34.48 mg/g and is superior to several prominent biomass candidates that have been reported for adsorption of NH 4 + . BNPP was also deployed on artificial urine, and the results suggest that it is an attractive bioadsorbent for harvesting nitrogen from liquid waste.

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“…It is well known that biochar is a carbon-rich material formed at >300-400 • C under limited or oxygen-deficient conditions [18]. In order to enhance its pore properties and/or adsorption performance, there are limited studies that have focused on the preparation of biochar from pineapple peel (PP) [19][20][21][22][23][24]. Fu et al [19] prepared PP-based biochar products at three temperatures (350, 500, and 650 • C) with a heating rate of 10 • C/min for 3 h, and they showed an increasing trend for its pore properties based on the Brunauer-Emmett-Teller (BET) surface area (i.e., it increased from 0.82 to 6.64 m 2 /g).…”

Section: Introductionmentioning

confidence: 99%

“…The latter was obtained under the pyrolysis conditions of 340 • C for 2 h and had a BET surface area value of 56.38 m 2 /g. Otieno et al obtained biochar with a BET surface area of 140 m 2 /g using ≤300 µm under vacuum carbonization at 400 • C for 4 h [24], and it was used for removing ammonium nitrogen from human urine solutions.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Porous Materials from Pineapple Peel at Elevated Pyrolysis Temperatures

et al. 2022

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In this work, pineapple peel (PP) was reused as a precursor in biochar (BC) production at elevated temperatures (i.e., 500–900 °C) for residence times of 0–60 min. The findings showed that pyrolysis temperature and residence time played a vital role in pore development. As pyrolysis temperature increased from 800 to 900 °C for residence times of 20 and 60 min, the data on the Brunauer–Emmett–Teller (BET) surface area of the resulting biochar products significantly jumped from 11.98–32.34 to 119.43–133.40 m2/g. In addition, there was a significant increase in the BET surface area from 1.02 to 133.40 m2/g with the residence time of 0 to 20 min at 900 °C. From the data of the nitrogen adsorption–desorption isotherms and the pore size distribution, both micropores (pore diameters of <2.0 nm) and mesopores (pore diameters of 2.0–50.0 nm) are present in the PP-based biochar products. Due to its good fittings in the pseudo-second-order model and its hydrophilic nature, as seen in the Fourier transform infrared spectroscopy (FTIR), the resulting biochar could be a porous material to be used for the effective removal of cationic compounds (i.e., methylene blue (MB)) from liquid phases.

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Pineapple peel biochar and lateritic soil as adsorbents for recovery of ammonium nitrogen from human urine

Cited by 27 publications

References 73 publications

Polyester Microplastic Mitigated NH₃ Volatilization from a Rice–Wheat Rotation System: Does Particle Size or Natural Aging Effect Matter?

Polyester Microplastic Mitigated NH₃ Volatilization from a Rice–Wheat Rotation System: Does Particle Size or Natural Aging Effect Matter?

Banana Peel Powder as an Effective Multilayer Adsorbent of Ammonium Ions

Preparation and Characterization of Porous Materials from Pineapple Peel at Elevated Pyrolysis Temperatures

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Pineapple peel biochar and lateritic soil as adsorbents for recovery of ammonium nitrogen from human urine

Cited by 27 publications

References 73 publications

Polyester Microplastic Mitigated NH3 Volatilization from a Rice–Wheat Rotation System: Does Particle Size or Natural Aging Effect Matter?

Polyester Microplastic Mitigated NH3 Volatilization from a Rice–Wheat Rotation System: Does Particle Size or Natural Aging Effect Matter?

Banana Peel Powder as an Effective Multilayer Adsorbent of Ammonium Ions

Preparation and Characterization of Porous Materials from Pineapple Peel at Elevated Pyrolysis Temperatures

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Product

Resources

About

Polyester Microplastic Mitigated NH₃ Volatilization from a Rice–Wheat Rotation System: Does Particle Size or Natural Aging Effect Matter?

Polyester Microplastic Mitigated NH₃ Volatilization from a Rice–Wheat Rotation System: Does Particle Size or Natural Aging Effect Matter?