Six fruit and vegetable peel beads for the simultaneous removal of heavy metals by biosorption

Water quality is under constant threat worldwide due to the discharge of heavy metals into the water from industrial waste. In this report, we introduce a potential candidate, chitosan, extracted and isolated from shrimp shells, that can adsorb heavy metals from polluted water. The waste shrimp shell chitosan was characterized via Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDS). The adsorption capacity of heavy metals on the modified shrimp shell was measured using an inductively coupled plasma mass spectrometry before and after adsorption. The highest adsorption of arsenic, nickel, and cobalt was 98.50, 74.50, and 47.82%, respectively, at neutral pH, whereas the highest adsorption of chromium was 97.40% at pH 3. Correspondingly, the maximum adsorption capacities of MSS for As, Cr, Ni, and Co were observed to be 15.92, 20.37, 7.00, and 6.27 mg/g, respectively. The application of Langmuir and Freundlich isotherm models revealed that the adsorption processes for the heavy metals were statistically significant (r2 > 0.98). The kinetic studies of metal adsorption, using modified shrimp shell, were well explained by the pseudo-second-order kinetic model with linear coefficients (r2) of >0.97. The presence of a greater number of functional groups on the adsorbent, such as N–H coupled with H–O, –COO−, C–H, N–N, and C–O–C, was confirmed by FTIR analyses. Furthermore, SEM-EDX analysis detected the presence of elements on the surface of modified shrimp shell chitosan. This noteworthy adsorption capacity suggests that MSS could serve as a promising, eco-friendly, and low-cost adsorbent for removing toxic heavy metals including Cr, Ni, As, and Co and can be used in many broad-scale applications to clean wastewater.

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“…where W denotes the amount (g) of MSS used, V denotes the volume (mL) of the metal solution, and q e is the adsorption at equilibrium [39,40].…”

Section: Inductively Coupled Plasma Mass Spectroscopy (Icp-ms) Analysesmentioning

confidence: 99%

“…The effects of pH on the bio-adsorption of the metal ions by MSS were assessed [40]. Briefly, in a 3 mL tube, 10 mg of MSS was added into a mixture of 1.0 mL of 1 mM solution of each metal.…”

Section: Effects Of Ph On Bio-adsorptionmentioning

confidence: 99%

Modified Shrimp-Based Chitosan as an Emerging Adsorbent Removing Heavy Metals (Chromium, Nickel, Arsenic, and Cobalt) from Polluted Water

et al. 2023

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“…Parameters were optimized in the following ranges, as adsorbent dosage (1 to 10 g L À1 ), solution temperature of (303-313 K), Cr(VI) initial concentration (10-100 mg L À1 ), shaking time (10-210 min), and pH. [2][3][4][5][6][7][8][9] NaOH and H 2 SO 4 were used to maintain pH. All the flasks containing the solutions were shaken till equilibrium time and then solutions were filtered using (Whatman filter paper 42).…”

Section: Batch Adsorption Studiesmentioning

confidence: 99%

“…3 Numerous industries have used Cr( vi ) to manufacture different chemical compounds, including metallurgical, refractory, foundry dyes, and many pigment sectors. As a result, wastewater from tanneries 4 and other industrial effluents, such as chromite ore processing wastewater, 5 textile mill effluents, 6 chrome plating industry wastewater, 7 steel industry slags, 8 and many others 9 contain Cr( vi ).…”

Section: Introductionmentioning

confidence: 99%

Excellent Cr(vi) adsorbent made from pyrolyzed green coconut trash with parametric modelling and optimization using RSM and experimental data

et al. 2023

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“…Different lignocellulosic materials have already been explored as potential metal ion adsorbents such as wood (sawdust and paper mill residues) and agricultural residues (such as almond shells, coconut shell, pineapple leaf, apricot shells, banana, apple peels etc.) [48][49][50][51][52][53]. These wastes have capacity to adsorb organic and inorganic pollutants as other natural sorbents; they have the advantages of being very low cost or free, having a wide availability, and having a simple operational process.…”

Section: Lignocellulosic Materialsmentioning

confidence: 99%

Acid modification of lignocellulosic derived material for dye and heavy metals removal: A review

Akindolie

Choi

2022

Environmental Engineering Research

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Researchers have tested Lignocellulose derived material (LDMs) from different sources ranging from agricultural to wood in order to facilitate the adsorption of chemical contaminants, such as heavy metals and dyes from water bodies, to eradicate water contamination. However, different methods have been employed to modify the nature of the LDMs to enable their suitability for contaminants removal. Among all these methods, acid modification of LDMs has gained a lot of attention. This review focused on the use of acid modification LDMs for the removal of anionic and cationic dyes, and heavy metals in water. The characteracerization techniques employed in studying the morphology and functional groups of the LDMs were discussed. The adsorption dynamics and mechanisms of reported studies were extensively summarized. The reported adsorption capacity of unmodified LDMs in the available liturature is in the range of 4.44–156.00 mg/g while for the modified is between 80.05–250.01 mg/g for dye removal. The adsorption capacity of modified LDMs reported was 1.60–18.03 times higher than the unmodified because of additional functional groups such as -SO<sub>3</sub> from sulphuric acid modification. Finally, the future outlook and challenges of this method were pulled together.

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Six fruit and vegetable peel beads for the simultaneous removal of heavy metals by biosorption

Cited by 14 publications

References 92 publications

Modified Shrimp-Based Chitosan as an Emerging Adsorbent Removing Heavy Metals (Chromium, Nickel, Arsenic, and Cobalt) from Polluted Water

Modified Shrimp-Based Chitosan as an Emerging Adsorbent Removing Heavy Metals (Chromium, Nickel, Arsenic, and Cobalt) from Polluted Water

Excellent Cr(vi) adsorbent made from pyrolyzed green coconut trash with parametric modelling and optimization using RSM and experimental data

Acid modification of lignocellulosic derived material for dye and heavy metals removal: A review

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