Extraction and Characterization of Chitosan from Crab Shells: Kinetic and Thermodynamic Studies of Arsenic and Copper Adsorption from Electroplating Wastewater

Sumaila, A.; Ndamitso, M. M.; Iyaka, Y. A.; Abdulkareem, A. S.; Tijani, Jimoh Oladejo; Idris, Mustapha Omenesa

doi:10.24996/ijs.2020.61.9.2

Cited by 11 publications

(5 citation statements)

References 47 publications

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“…The intensity of the elements' peaks is similar in all samples, showing that minor changes in element composition occurred during the modification and composite synthesis but slightly different from CC. The elemental composition of commercial crab CH as described by Sumaila et al (2020) is consistent with the presence of metals Ca, Y, Ag, Nb, K, Na, Mg, and Al in materials made from land snail shell CH. The mineral composition of gastropoda shells may be responsible for these alkaline metals, alkaline earth metals, rare earth metals, and transition metals (Angeli et al, 2021).…”

Section: Results Of Energy Dispersive X-ray Analysissupporting

confidence: 64%

The physico-chemical properties and sorption potentials of snail shell particulates, chitin, chitosan, and oxalic acid modified chitosan from achatina fulica shell

Ochi

Babayemi

2023

EUR J SUSTAIN DEV RES

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The purpose of the research was to compare the properties of snail shell particulate (SSP) and its derivatives to those of commercial chitosan (CC) as potential adsorbents. Chitin (CT) was synthesized by deproteinizing and demineralizing SSP with dilute sodium hydroxide (NaOH) and hydrochloric acid (HCl) solutions, respectively. Chitosan (CH) was prepared by partially deacetylating CT with concentrated NaOH. The extracted CH was modified with 10.00% (w/v) oxalic acid (CHox). Energy dispersive X-Ray (EDAX), Fourier transform infrared (FTIR), Brunauer-Emmett-Teller (BET), scanning electron microscopy (SEM), and chromium adsorption were used to characterize the materials. FTIR spectra of CT and CH materials showed the presence alkyne, nitrile, primary and secondary amines/amides groups with 83.98% as the degree of deacetylation. The spectra of EDAX of CT and CH samples showcased predominant peaks, which correspond to calcium, oxygen, yttrium, and silver. SEM images showed tight, porous, and fractured surface for CT and CH materials unlike the snail shell and CC. BET surface area of the adsorbents were in the increasing order of CT<CC<CHox<SSP<CH. CH has a greater surface area of 362.32 m2/g and a mesoporosity of 71.41%. However CHox with moisture content 1.52%, bulk density of 0.58 g/cm3, ash content (AC) 0.47% and pH 10.24, has better advantage to be used as biosorbent compared to CC with moisture content 1.08%, bulk density of 0.49 g/cm3, AC 0.87% and pH 8.58. CHox had a higher chromium adsorption of 80.4 mg/g at a concentration of 150 mg/L, while having a relatively smaller surface area of 325.38 m2/g (68.36% mesoporosity). The potential removal techniques include ionic interaction between chromium ion and functional groups and surface adsorption due to the textural characteristics of adsorbent samples. When compared to CC, snail shell particle and its derivatives are potential good adsorbents.

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Section: Results Of Energy Dispersive X-ray Analysissupporting

confidence: 64%

The physico-chemical properties and sorption potentials of snail shell particulates, chitin, chitosan, and oxalic acid modified chitosan from achatina fulica shell

Ochi

Babayemi

2023

EUR J SUSTAIN DEV RES

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“…To determine the definitive cause, we analyze for residual acetyl groups, identify any impurities, and compare the chitin sources used for each sample. This results are commonly observed in mesoporous materials, of which the sharp increase in the adsorbed quantity at high relative pressure indicates that the available mesoporous volume is occupied [ 39 ]. Figure 1 b1–b3 shows the purity phases of the commercial, extracted, and hydrogel chitosan obtained by XRD.…”

Section: Resultsmentioning

confidence: 69%

Enhancing Wastewater Depollution: Sustainable Biosorption Using Chemically Modified Chitosan Derivatives for Efficient Removal of Heavy Metals and Dyes

Ayach,

Duma,

Badran

et al. 2024

Materials

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Driven by concerns over polluted industrial wastewater, particularly heavy metals and dyes, this study explores biosorption using chemically cross-link chitosan derivatives as a sustainable and cost-effective depollution method. Chitosan cross-linking employs either water-soluble polymers and agents like glutaraldehyde or copolymerization of hydrophilic monomers with a cross-linker. Chemical cross-linking of polymers has emerged as a promising approach to enhance the wet-strength properties of materials. The chitosan thus extracted, as powder or gel, was used to adsorb heavy metals (lead (Pb2+) and copper (Cu2+)) and dyes (methylene blue (MB) and crystal violet (CV)). Extensive analysis of the physicochemical properties of both the powder and hydrogel adsorbents was conducted using a range of analytical techniques, including Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET), and scanning electron microscopy (SEM), as well as 1H and 13C nuclear magnetic resonance (NMR). To gain a comprehensive understanding of the sorption process, the effect of contact time, pH, concentration, and temperature was investigated. The adsorption capacity of chitosan powder for Cu(II), Pb(II), methylene blue (MB), and crystal violet (CV) was subsequently determined as follows: 99, 75, 98, and 80%, respectively. In addition, the adsorption capacity of chitosan hydrogel for Cu(II), Pb(II), MB, and CV was as follows: 85, 95, 85, and 98%, respectively. The experimental data obtained were analyzed using the Langmuir, Freundlich, and Dubinin–Radushkevich isotherm models. The isotherm study revealed that the adsorption equilibrium is well fitted to the Freundlich isotherm (R2 = 0.998), and the sorption capacity of both chitosan powder and hydrogel was found to be exceptionally high (approximately 98%) with the adsorbent favoring multilayer adsorption. Besides, Dubinin has given an indication that the sorption process was dominated by Van der Waals physical forces at all studied temperatures.

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“…The results also agreed with what he found [38] when diagnosing chitosan produced from shrimp waste with an FTIR device. and [39] when characterizing chitosan extracted from crab shells.…”

Section: Diagnosis Of Chitosan Using the Ftir Devicementioning

confidence: 99%

Preparation of Chitosan from Agaricus bisporus Brown Stems and Studying some Its Physicochemical and Functional Properties

Shahadha,

Al-Aubadi,

Merzah

2023

IOP Conf. Ser.: Earth Environ. Sci.

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The stems of the brown Agaricus bisporus mushroom, which were obtained from the Al-Wadq mushroom farm / Baghdad, The chemical composition of the mushroom stems was estimated as the proportions of the mushroom components: moisture, protein, fat, ash, carbohydrates (91, 2.8, 0.25, 0.88, 5.07)% respectively. Chitin was extracted from the stemsof A. bisporus brown mushrooms by chemical method using 2 M sodium hydroxide solution and 2% acetic acid. The percentage of chitin extracted from mushroom stems was 13.8%. Chitosan was prepared from the stems of A. bisporus brown using a 50% sodium hydroxide solution at a temperature of 100°C for 3 hours, and the percentage of chitosan in mushroom stems was 10.5%. The chitosan under study was identified using Fourier Transform Infra-Red (FTIR). The degree of deacetylation of chitosan produced from the stems of A. bisporus brown was 83%. The viscosity of mushroom stems chitosan was 40cP. When the viscosity was estimated by dissolving chitosan in 1% acetic acid solution, the molecular weight of mushroom stems chitosan was 46.922 kDa. The stems chitosan was distinguished by its high solubility in 1% acetic acid solution, reaching 90%.

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Extraction and Characterization of Chitosan from Crab Shells: Kinetic and Thermodynamic Studies of Arsenic and Copper Adsorption from Electroplating Wastewater

Cited by 11 publications

References 47 publications

The physico-chemical properties and sorption potentials of snail shell particulates, chitin, chitosan, and oxalic acid modified chitosan from <i>achatina fulica</i> shell

The physico-chemical properties and sorption potentials of snail shell particulates, chitin, chitosan, and oxalic acid modified chitosan from <i>achatina fulica</i> shell

Enhancing Wastewater Depollution: Sustainable Biosorption Using Chemically Modified Chitosan Derivatives for Efficient Removal of Heavy Metals and Dyes

Preparation of Chitosan from Agaricus bisporus Brown Stems and Studying some Its Physicochemical and Functional Properties

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