Adsorption of Cu (II) and Cd (II) onto Activated Carbon Prepared from Pumpkin Seed Shell

Kemal, Almaz; Siraj, Khalid; Michael, Wondmagegn H.

doi:10.30799/jespr.161.19050105

Cited by 5 publications

(5 citation statements)

References 27 publications

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“…Pumpkin seeds, also known as pepitas, are flattened and vary in size, shape and color. Oil extracted from pumpkin seeds has various benefits such as anti-microbial, anti-fungal and anti-viral properties [22]. The pumpkin seed shell survey shows that many researchers are focusing on the preparation and usage of pumpkin seed shell as a possible absorbent for contaminant removal [23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Antibiotic Removal from the Aquatic Environment with Activated Carbon Produced from Pumpkin Seeds

Alacabey

2022

Molecules

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Antibiotics are among the most critical environmental pollutant drug groups. Adsorption is one of the methods used to eliminate these pollutants. In this study, activated carbon was produced from pumpkin seed shells and subsequently modified with KOH. The adsorbent obtained through this procedure was used to remove ciprofloxacin from aqueous systems. Fourier Transform-Infrared Spectroscopy (FT-IR), Scanning Electron Microscopy (SEM), elemental, X-ray Photoelectron Spectroscopy (XPS), Brunauer–Emmett–Teller (BET) and Zeta analyses were used to characterize the adsorbent. The surface area, in particular, was found to be a very remarkable value of 2730 m2/g. The conditions of the adsorption experiments were optimized based on interaction time, adsorbent amount, pH and temperature. Over 99% success was achieved in removal operations carried out under the most optimal conditions, with an absorption capacity of 884.9 mg·g−1. In addition, the Langmuir isotherm was determined to be the most suitable model for the adsorption interaction.

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Section: Introductionmentioning

confidence: 99%

Antibiotic Removal from the Aquatic Environment with Activated Carbon Produced from Pumpkin Seeds

Alacabey

2022

Molecules

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“…It is evident from Figure 5a that the distribution curve of PAC particles could be counted a uniform-distribution curve. The percentage of adsorption is higher for those adsorbents have smaller particle size due to the availability of more surface area [48]. The surface morphology of PAC was visualized via FESEM, with a magnification of 10,000×, as shown in Figure 5b.…”

Section: Pac Characterizationmentioning

confidence: 99%

A New Polyvinylidene Fluoride Membrane Synthesized by Integrating of Powdered Activated Carbon for Treatment of Stabilized Leachate

Abuabdou

Jaffari

et al. 2021

Water

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Stabilized landfill leachate contains a wide variety of highly concentrated non-biodegradable organics, which are extremely toxic to the environment. Though numerous techniques have been developed for leachate treatment, advanced membrane filtration is one of the most environmentally friendly methods to purify wastewater effectively. In the current study, a novel polymeric membrane was produced by integrating powdered activated carbon (PAC) on polyvinylidene fluoride (PVDF) to synthesize a thin membrane using the phase inversion method. The membrane design was optimized using response surface methodology (RSM). The fabricated membrane was effectively applied for the filtration of stabilized leachate using a cross-flow ring (CFR) test. The findings suggested that the filtration properties of fabricated membrane were effectively enhanced through the incorporation of PAC. The optimum removal efficiencies by the fabricated membrane (14.9 wt.% PVDF, 1.0 wt.% PAC) were 35.34, 48.71, and 22.00% for COD, colour and NH3-N, respectively. Water flux and transmembrane pressure were also enhanced by the incorporated PAC and recorded 61.0 L/m2·h and 0.67 bar, respectively, under the conditions of the optimum removal efficiency. Moreover, the performance of fabricated membranes in terms of pollutant removal, pure water permeation, and different morphological characteristics were systematically analyzed. Despite the limited achievement, which might be improved by the addition of a hydrophilic additive, the study offers an efficient way to fabricate PVDF-PAC membrane and to optimize its treatability through the RSM tool.

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“…Many elements are classified into the category of heavy metals, but some are relevant in the environmental context. List of the environmentally relevant most toxic heavy metals and metalloids contains Cr, Ni, Cu, Zn, Cd, Pb, Hg, and As" Kemal et al [1]. "Heavy metals are naturally occurring elements that have a high atomic weight and a density at least 5 times greater than that of water.…”

Section: Introductionmentioning

confidence: 99%

“…Their multiple industrial, domestic, agricultural, medical and technological applications have led to their wide distribution in the environment; raising concerns over their potential effects on human health and the environment. Their toxicity depends on several factors including the dose, route of exposure, and chemical species, as well as the age, gender, genetics, and nutritional status of exposed individuals" [1].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Activated Carbon from Mahogany Fruit Shell (Khaya senegalensis) Impregnated with TiO2 Used in the Adsorption of Cadmium and Arsenic

Danbature,

Pindiga,

Ibrahim

2024

AJOCS

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In this Study, low-cost activated carbon impregnated with TiO2 (Ac/ TiO2) was prepared from mahogany fruit shell (Khaya senegalensis) by chemical activation using phosphoric acid, H3PO4. The resulting product was evaluated for the removal of Arsenic and Cadmium ions from aqueous solutions. The prepared activated carbon was characterized using SEM, FTIR and XRD. Operational parameters such as initial concentration, adsorbent dose, contact time, effects of pH and temperature were studied in a batch system. It was found that the percentage removal for arsenic and cadmium were around 98 and 97% respectively. Equilibrium of the adsorption processes were obtained by testing the adsorption data using two different isotherm models: Langmuir and Freundlich. The adsorption of arsenic fitted well with Freundlich with R2 value of 0.9106. The kinetic of adsorption process was tested through pseudo first order and pseudo second order models. The Pseudo Second Order Kinetic Model provides the best correlation for the experimental data of both the two metals studied. Thermodynamics parameters, such as ΔGo, ΔHo and ΔS0 were also calculated. This result shows that the process of adsorption for arsenic was spontaneous and exothermic, while that of cadmium was spontaneous and endothermic.

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Adsorption of Cu (II) and Cd (II) onto Activated Carbon Prepared from Pumpkin Seed Shell

Cited by 5 publications

References 27 publications

Antibiotic Removal from the Aquatic Environment with Activated Carbon Produced from Pumpkin Seeds

Antibiotic Removal from the Aquatic Environment with Activated Carbon Produced from Pumpkin Seeds

A New Polyvinylidene Fluoride Membrane Synthesized by Integrating of Powdered Activated Carbon for Treatment of Stabilized Leachate

Synthesis and Characterization of Activated Carbon from Mahogany Fruit Shell (Khaya senegalensis) Impregnated with TiO2 Used in the Adsorption of Cadmium and Arsenic

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