The use of biochar-NH2 produced from watermelon peels as a natural adsorbent for the removal of Cu(II) ion from water

El‐Nemr, Mohamed A.; Aigbe, Uyiosa Osagie; Hassaan, Mohamed A.; Ukhurebor, Kingsley Eghonghon; Ragab, Safaa; Onyancha, Robert Birundu; Osibote, Otolorin Adelaja; Nemr, Ahmed El

doi:10.1007/s13399-022-02327-1

Cited by 32 publications

(28 citation statements)

References 72 publications

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“…The sonicated solution was filtered and washed with distilled water and dried at 105 °C. The obtained sonicated SD from this treatment was labelled as SSD [29].…”

Section: Ssd Biochar Preparationsmentioning

confidence: 99%

“…After, it was cold filtered and washed with purified water and finally washed with ethanol. Lastly, the functionalized biochar was then dried at 105 °C for 48 h and was labelled as SDA [29].…”

Section: Ammonia-modified Sd Biochar (Sda) Preparationsmentioning

confidence: 99%

“…The investigations of the isotherm were undertaken by utilizing the BET plot in obtaining a monolayer volume (V m ) (cm 3 (STP) g −1 ), the surface area (S BET ) (m 2 g −1 ), total pore volume (cm 3 g −1 ), energy constant (C), as well as the mean pore diameter (nm). Also, the micropore surface area (S mi ) and micropore volume (V mi ) along with the mesopore surface area (S mes ) and mesopore volume (V mes ) of biochars were obtained through the Barrett-Joyner-Halenda (BJH) technique [29,53], in accordance with the BELSORP analysis software program. The pore size distributions were estimated from the desorption isotherm via the utilizations of the BJH technique.…”

Section: Characterizations Of Biocharsmentioning

confidence: 99%

“…The wastes from Cu(II) ions in the form of effluents or wastes from these manufacturing industries are released into the ecological environments in various quantities. These wastes end up endangering humans, other living organisms (animals and plants), and the entire ecosystem [28,29]. Essentially, the extent of environmental contaminations from Cu(II) ions and other HMs in wastewater is determined primarily by the period and extent of the contaminations, as well as the actions that initiate the source of the contaminations [28,30].…”

Section: Introductionmentioning

confidence: 99%

“…Several scientists have and are currently investigating low-cost (cheap) adsorbents with remarkable metal-binding abilities for wastewater management and treatment [2,28,29]. Correspondingly, it has been reported that a variety of agro-based by-products, such as fruit peelings, compost, seeds, and plant leaves, are nowadays widely used for wastewater treatment in the presence of HMs [2,28,29,39]. The core components of flora cells are cellulose, lignin, and tannin, which have a high capacity for absorbing HM ions [5,40].…”

Section: Introductionmentioning

confidence: 99%

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Copper(II) ion removal by chemically and physically modified sawdust biochar

Eleryan

Aigbe

Ukhurebor

et al. 2022

Biomass Conv. Bioref.

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The difference between physical activations (by sonications) and chemical activations (by ammonia) on sawdust biochar has been investigated in this study by comparing the removal of Cu(II) ions from an aqueous medium by adsorption on sawdust biochar (SD), sonicated sawdust biochar (SSD), and ammonia-modified sawdust biochar (SDA) with stirring at room temperature, pH value of 5.5–6.0, and 200 rpm. The biochar was prepared by the dehydrations of wood sawdust by reflux with sulfuric acid, and the biochar formed has been activated physically by sonications and chemically by ammonia solutions and then characterized by the Fourier transform infrared (FTIR); Brunauer, Emmett, and Teller (BET); scanning electron microscope (SEM); thermal gravimetric analysis (TGA); and energy-dispersive spectroscopy (EDX) analyses. The removal of Cu(II) ions involves 100 mL of sample volume and initial Cu(II) ion concentrations (conc) 50, 75, 100, 125, 150, 175, and 200 mg L−1 and the biochar doses of 100, 150, 200, 250, and 300 mg. The maximum removal percentage of Cu(II) ions was 95.56, 96.67, and 98.33% for SD, SSD, and SDA biochars, respectively, for 50 mg L−1 Cu(II) ion initial conc and 1.0 g L−1 adsorbent dose. The correlation coefficient (R2) was used to confirm the data obtained from the isotherm models. The Langmuir isotherm model was best fitted to the experimental data of SD, SSD, and SDA. The maximum adsorption capacities (Qm) of SD, SSD, and SDA are 91.74, 112.36, and 133.33 mg g−1, respectively. The degree of fitting using the non-linear isotherm models was in the sequence of Langmuir (LNR) (ideal fit) > Freundlich (FRH) > Temkin (SD and SSD) and FRH (ideal fit) > LNR > Temkin (SDA). LNR and FRH ideally described the biosorption of Cu(II) ions to SD and SSD and SDA owing to the low values of χ2 and R2 obtained using the non-linear isotherm models. The adsorption rate was well-ordered by the pseudo-second-order (PSO) rate models. Finally, chemically modified biochar with ammonia solutions (SDA) enhances the Cu(II) ions’ adsorption efficiency more than physical activations by sonications (SSD). Response surface methodology (RSM) optimization analysis was studied for the removal of Cu(II) ions using SD, SSD, and SDA biochars.

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“…The sonicated solution was filtered and washed with distilled water and dried at 105 °C. The obtained sonicated SD from this treatment was labelled as SSD [29].…”

Section: Ssd Biochar Preparationsmentioning

confidence: 99%

Section: Ammonia-modified Sd Biochar (Sda) Preparationsmentioning

confidence: 99%

Section: Characterizations Of Biocharsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Copper(II) ion removal by chemically and physically modified sawdust biochar

Eleryan

Aigbe

Ukhurebor

et al. 2022

Biomass Conv. Bioref.

Self Cite

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Organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) distribution, origins, and risk evaluation in the Egyptian Mediterranean coast sediments

Hassaan,

Ragab,

Elkatory

et al. 2024

Water Environment Research

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A study was conducted on 31 surface sediments located in different sectors of the Egyptian Mediterranean coast. The sediments were analyzed for their pollution levels of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs). The sediments were collected from various depths in harbors, coastal lakes, bays, and lagoons, covering the southeastern Mediterranean of the Nile Delta region. The study aimed at determining the distribution, origin, and potential ecological impact of OCP and PCB pollutants. The researchers used the SRM method of GC‐MS/MS to measure the concentration of 18 PCBs and 16 OCPs residues. The study found that the total concentration of OCPs in the samples ranged from 3.091 to 20.512 ng/g, with a mean of 8.749 ± 3.677 ng/g. The total concentration of PCB residues ranged from 2.926 to 20.77 ng/g, with a mean of 5.68 ± 3.282 ng/g. The concentration of DDTs exceeded the effect range low (ERL) (1.00) and threshold effect level (TEL) (1.19) in several stations, but it was still below the effect range median (ERM) (7.00) and the probable effect level (PEL) (4.77). This indicates a low ecological risk. The principal component analysis (PCA) was also conducted to determine the sources of all pollutants in the sediment. The PCA showed significant correlations between the concentrations of Gama‐HCH and Beta‐HCH (0.741), suggesting similar sources.Practitioner Points OCPs and PCBs residues were analyzed in the sediment of the southeastern Mediterranean. The concentration, existence, and causes of OCPs and PCBs were investigated. OCPs and PCBs ecological risk and ecotoxicological calculation were investigated in detail. Cluster analysis, PCA, and correlation coefficient were also investigated.

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