Development and tailoring of amino-functionalized activated carbon based Cucumerupsi manni Naudin seed shells for the removal of nitrate ions from aqueous solution

Lékéné, René Blaise Ngouateu; Kouotou, Daouda; Ankoro, Naphtali Odogu; Kouoh, Adolphe Paul-Michel Sone; Ndi, Juluis Nsami; Ketcha, Joseph Mbadcam

doi:10.1016/j.jscs.2021.101316

Cited by 10 publications

(6 citation statements)

References 36 publications

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“…The positive effect of low pH on the efficiency of P-PO 4 sorption was also observed in a study on the removal of orthophosphates on chitosan-based sorbents [ 29 , 30 ]. In turn, a high nitrate binding efficiency at low pH was observed for sorbents such as clay [ 31 ], activated carbon [ 32 , 33 ], and Dioscorea alata L. biomass [ 34 ].…”

Section: Resultsmentioning

confidence: 99%

The Use of Chitin for the Removal of Nitrates and Orthophosphates from Greenhouse Wastewater

Jóźwiak,

Mielcarek,

Filipkowska

2024

Molecules

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The study investigated the possibility of using chitin flakes as an unconventional sorbent for the removal of orthophosphates and nitrates from greenhouse wastewater (GW). The effluent parameters were as follows: 66.2 mg P-PO4/L, 566.0 mg N-NO3/L, 456.0 mg S-SO4/L, 13.7 mg Cl−/L, 721 mg Ca2+/L, 230 mg Mg2+/L, hardness 11.3 °dH, and pH 5.4. The scope of the research included determinations of the influence of pH on GW composition and the efficiency of nutrient sorption, the kinetics of nutrient sorption, the influence of the dose of chitin flakes on the effectiveness of nutrient binding and the maximum sorption capacity of the sorbent. The sorption of P-PO4 on the tested sorbent was most effective at pH 4, and the sorption of N-NO3 at pH 2. The equilibrium time of sorption of both nutrients from GW to chitin depended on the sorbent dose and ranged from 150 to 180 min. The sorbent dose of 40 g/L enabled removing 90% of orthophosphates and 5.7% of nitrates from the wastewater. The maximum sorption capacity of CH towards P-PO4 and N-NO3 contained in the GW was 3.20 mg/g and 3.04 mg/g, respectively. In turn, the sorption of calcium and magnesium ions on chitin flakes was completely ineffective.

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Section: Resultsmentioning

confidence: 99%

The Use of Chitin for the Removal of Nitrates and Orthophosphates from Greenhouse Wastewater

Jóźwiak,

Mielcarek,

Filipkowska

2024

Molecules

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“…The correlation coefficients shown in Table 2 indicate that the Na-Kc-BB9 systems can be described by Langmuir isotherm given the higher correlation coefficient R 2 (0.91) and lowest value of χ 2 . The good correlation with the Langmuir model assumes the formation of a monolayer on the surface of the adsorbent, all the adsorption sites are almost equivalent and therefore isoenergetic (Lekene et al 2021;Tabi et al 2022b;Tchanang et al 2022). The parameter 1/n provides information on the adsorption intensity and also indicates the relative distribution of energetic sites for adsorption and depends on both the nature and strength of the adsorption process.…”

Section: Equilibrium Studies and Isothermsmentioning

confidence: 86%

Application of γ-Nanoalumina-based Kaolinitic Clay (Na-Kc) in the Adsorptive Removal of Basic Blue 9 from aqueous synthetic Solution

Tchanang,

Kepdieu,

Djangang

et al. 2024

Preprint

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Experimental and theoretical investigations related to the adsorptive removal of Basic blue 9 (BB9) onto γ-nanoAl2O3 have been done in the present work. Batch tests were carried out varying some processing parameters namely initial dye concentration (5 - 50 mg/L), adsorbent dose (0.5 - 5 g/L), initial pH (1 - 12) and contact time (0 - 30 min). Under conditions of C0 = 50 mg/L; pH = 11; dose = 1g/L and t = 15 min, more than 83.6% of the BB9 molecules were removed. The pseudo-second order and the Langmuir models fit well the experimental data with highest R2 values of 0.99 and 0.91 respectively and lowest values of χ2. This suggests a two- step mechanism on a homogeneous distribution of active sites on the adsorbent surface. The adsorption mechanism first involved electrostatic interactions between the negatively charged γ-nanoAl2O3 surface in basic medium and secondly electrophilic-nucleophilic interactions. Compared to other adsorbents, γ-nanoAl2O3 of this work is a good alternative for treatment water containing dye BB9.

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“…The validity of the different aforementioned models was evaluated using correlation coefficient (R 2 ), root mean square error (RMSE) and Chi-square test (χ 2 ) [45]. The respective relations are given below:…”

Section: Kinetics Studiesmentioning

confidence: 99%

“…Linear methods have been proven to have significant limitation related to the linearized form of isotherms/kinetics equations by producing a vast number of different outcomes, which implicitly alter the error structure, violates the error variance and normality assumptions of standard least squares leading to the bias of the adsorption data [25] [44] [45] [46]. Due to the inherent bias from linearization, the non-linear regression will be used in this work to provide a mathematically rigorous method for determining the isotherm/kinetic parameters using the original form of the equations [44] [45].…”

Section: Introductionmentioning

confidence: 99%

Composite Activated Carbon from <i>Canarium schweinfurthii</i>/Polyethylene Terephthalate: Adsorption Test of Rhodamine B Dye Removal in Aqueous Solution

Boris,

Odogu,

Blaise

et al. 2023

MSCE

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The present work deals on one hand with the valorization of wastes plastics, polyethylene terephthalate (PET) and Canarium schweinfurthii (CS) for the preparation of polyethylene terephthalate activated carbon (PETAC) and Canarium schweinfurthii/polyethylene terephthalate activated carbon (CS/PETAC).These adsorbents, on the other hand, were used for removal Rhodamine B (RhB) in an aqueous solution. PET and CS precursors were subjected to thermogravimetric analysis (TGA) and differential scanning colorimetry (DSC). Meanwhile PETAC and CS/PETAC were characterized using scanning electron microscopy-energy dispersive spectrometry (SEM-EDS), X-ray fluorescence (XRF), Fourier transformed infrared spectroscopy (FT-IR) and nitrogen adsorption/desorption (N 2 -BET). The N 2 -BET results revealed an increase of the specific surface area from 6.75 m 2 /g to 1282.0 m 2 /g for PETAC and CS/PETAC. The results of characterization indicated the key role played by plastic wastes to enhance the structural and functional properties of CS/PETAC. The RhB removal from the aqueous solution onto PETAC and CS/PETAC was found to be independent of pH, with an optimal contact time of RhB removal within 10 min for materials. The non-linear adsorption isotherm data for the adsorption process showed that the Langmuir and Freundlich models best fitted the RhB adsorption onto PETAC meanwhile only the Freundlich adsorption isotherm gave the best fit for CS/PETAC according to the correlation coefficient value closed to unity. The pseudo-first and pseudo-second-order ki-How to cite this paper:

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Development and tailoring of amino-functionalized activated carbon based Cucumerupsi manni Naudin seed shells for the removal of nitrate ions from aqueous solution

Cited by 10 publications

References 36 publications

The Use of Chitin for the Removal of Nitrates and Orthophosphates from Greenhouse Wastewater

The Use of Chitin for the Removal of Nitrates and Orthophosphates from Greenhouse Wastewater

Application of γ-Nanoalumina-based Kaolinitic Clay (Na-Kc) in the Adsorptive Removal of Basic Blue 9 from aqueous synthetic Solution

Composite Activated Carbon from <i>Canarium schweinfurthii</i>/Polyethylene Terephthalate: Adsorption Test of Rhodamine B Dye Removal in Aqueous Solution

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Development and tailoring of amino-functionalized activated carbon based Cucumerupsi manni Naudin seed shells for the removal of nitrate ions from aqueous solution

Cited by 10 publications

References 36 publications

The Use of Chitin for the Removal of Nitrates and Orthophosphates from Greenhouse Wastewater

The Use of Chitin for the Removal of Nitrates and Orthophosphates from Greenhouse Wastewater

Application of γ-Nanoalumina-based Kaolinitic Clay (Na-Kc) in the Adsorptive Removal of Basic Blue 9 from aqueous synthetic Solution

Composite Activated Carbon from &lt;i&gt;Canarium schweinfurthii&lt;/i&gt;/Polyethylene Terephthalate: Adsorption Test of Rhodamine B Dye Removal in Aqueous Solution

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Product

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Composite Activated Carbon from <i>Canarium schweinfurthii</i>/Polyethylene Terephthalate: Adsorption Test of Rhodamine B Dye Removal in Aqueous Solution