The use of raw shrimp shells in the adsorption of highly polluted waters with Co2+

Gök, Gülden; Koçyiğit, Hasan; Gök, Oğuzhan; Çelebi, Hakan

doi:10.1016/j.cherd.2022.07.041

Cited by 12 publications

(3 citation statements)

References 53 publications

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“…Figure 3 displays FT-IR spectra of both clean (WTC) and Cd(II)-loaded WTC (WTC + Cd). For WTC, we observe absorption bands: (a) wide between 3370.4–3236.1 cm −1 , associated with O-H and N-H stretching [ 23 ]; (b) at 2920 cm −1 , assigned to C-H stretching typical in polysaccharides [ 24 ]; (c) around 1736.8 cm −1 , assigned to C=O stretching of carboxylic groups [ 25 ], (d) at 1233 cm −1 , characteristic of C=O stretching in tertiary amides; (e) at 1031.3 cm −1 , associated to C-O-C stretching, typical in polysaccharides [ 26 ]; (f) at 2330 and 2359 cm −1 , which can be assigned to O=C=O stretching [ 27 ], although we do not rule out the presence of nitrile C≡N groups [ 28 , 29 ]. After biosorption, the (WTC + Cd) spectrum shows changes in the position (red-shifting) of some important bands.…”

Section: Resultsmentioning

confidence: 99%

Effective Removal of Cd(II) from Aqueous Solutions Using Theobroma cacao Agro-Industrial Waste

Lavado-Meza,

De la Cruz-Cerrón,

Lavado-Puente

et al. 2023

Molecules

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Theobroma cacao agro-industrial waste (WTC) has been characterized and tested as an effective biosorbent to remove Cd(II) from aqueous media. At the optimum pH of 5.0, a maximum adsorption capacity of qe,max = 58.5 mg g−1 was determined. The structural and morphological characterization have been conducted by FTIR, SEM/EDX, and TGA measurements. The SEM/EDX results confirmed that the metals are adsorbed on the surface. C-O-C, OH, CH, NH, and C=O functional groups were identified by FTIR. TGA results were consistent with the presence of hemicellulose. Biosorption kinetics were rapid during the first 30 min and then reached equilibrium. The corresponding experimental data were well fitted to pseudo-first and -second order models, the latter being the best. The biosorption isotherm data were also well fitted to Temkin, Langmuir, and Freundlich models, showing that several sorption mechanisms may be involved in the Cd(II) biosorption process, which was characterized as exothermic (ΔH0 < 0), feasible, and spontaneous (ΔG0 < 0). In binary (Cd–Pb and Cd–Cu) and ternary (Cd–Pb–Cu) systems, Cu(II) and particularly Pb(II) co-cations exert strong antagonistic effects. Using HNO3, effective good regeneration of WTC was obtained to efficiently remove Cd(II) up to three times.

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Section: Resultsmentioning

confidence: 99%

Effective Removal of Cd(II) from Aqueous Solutions Using Theobroma cacao Agro-Industrial Waste

Lavado-Meza,

De la Cruz-Cerrón,

Lavado-Puente

et al. 2023

Molecules

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“…Shrimp shell waste is not only used for the production of chitin also it is used as probable raw material for the production of bioethanol and biodiesel [43]. Further shrimp shell waste used as an efficient adsorbent for removal of metal from polluted water and explored as antioxidant, and neuroprotective activities [44,45]. Still, there is lot of scope to utilize the shrimp shell waste in different fields.…”

Section: Ros Assaymentioning

confidence: 99%

Green synthetic photo-irradiated chitin-silver nanoparticles for antimicrobial applications

Tenkayala,

Krishna Kandala,

Sangubotla

et al. 2024

J App Biol Biotech

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The primary purpose of this study was to synthesize silver nanoparticles (AgNPs) utilizing chitin extracted from shrimp shell waste by simple photo-irradiation in a single-pot biosynthesis without adding any toxic chemical substances. Glucose molecules in the chitin extract act as the reducing agent, while amino acids in chitin behave like proteins and are responsible for the production of AgNPs by acting as the particle-stabilizing agent. The synthesized chitin-AgNPs were thoroughly investigated using transmission electron microscopy (TEM), Fourier-transform infrared analysis, and ultraviolet-visible absorption spectroscopy. UV-visible spectroscopy revealed a surface plasmon resonance peak at 470 nm, confirming the formation of chitin-AgNPs. FTIR data confirmed the association between chitin and AgNPs. TEM studies showed that the synthesized chitin-AgNPs have a spherical shape with particle sizes ranging from 10 to 30 nm. The prepared chitin-AgNPs exhibited intense antibacterial activity against the Gram-positive Bacillus subtilis, Staphylococcus aureus, Gram-negative Pseudomonas aeruginosa, and Escherichia coli, as well as antifungal efficacy against Aspergillus niger. Reactive oxygen species and live and dead cell assays were performed to examine the chitin- AgNPs and the results were further found to be interesting and positive. The assays revealed that the prepared chitin- AgNPs exhibited significant antimicrobial potential against B. subtilis and A. niger, with a zone of inhibition measuring approximately 6.2 mm and 30 mm, respectively. The effects of the chitin-AgNPs were compared to those of commercial agents, such as ciprofloxacin (6.0 mm) and fluconazole (25 mm). Consequently, the chitin-AgNPs developed through a greener approach show promising potential as sustainable materials for antibacterial and antifungal activities.

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“…This adsorption characteristic of ETSSs is significantly different from that of raw shrimp shells as bioadsorbents. Gok et al [44] showed that the most suitable isotherm models for the adsorption of Co 2+ by raw shrimp shells were Langmuir (R 2 = 0.9567) and Freundlich (R 2 = 0.9387) rather than the D-R model (R 2 = 0.7032). That is to say, only chemisorption occurs when raw shrimp shells are used as bioadsorbents, which may be related to the smooth surface morphology of raw shrimp shells.…”

Section: Adsorption Isothermmentioning

confidence: 99%

Removal of Fluoride from Aqueous Solution Using Shrimp Shell Residue as a Biosorbent after Astaxanthin Recovery

Zhang

Liao

et al. 2023

Molecules

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Natural astaxanthin has been widely used in the food, cosmetic, and medicine industries due to its exceptional biological activity. Shrimp shell is one of the primary natural biological sources of astaxanthin. However, after astaxanthin recovery, there is still a lot of chitin contained in the residues. In this study, the residue from shrimp (Penaeus Vannamei) shells after astaxanthin extraction using ionic liquid (IL) 1-ethyl-3-methyl-imidazolium acetate ([Emim]Ac) was used as a bioadsorbent to remove fluoride from the aqueous solution. The results show the IL extraction conditions, including the solid/liquid ratio, temperature, time, and particle size, all played important roles in the removal of fluoride by the shrimp shell residue. The shrimp shells treated using [Emim]Ac at 100 °C for 2 h exhibited an obvious porous structure, and the porosity showed a positive linear correlation with defluorination (DF, %). Moreover, the adsorption process of fluoride was nonspontaneous and endothermic, which fits well with both the pseudo-second-order and Langmuir models. The maximum adsorption capacity calculated according to the Langmuir model is 3.29 mg/g, which is better than most bioadsorbents. This study provides a low-cost and efficient method for the preparation of adsorbents from shrimp processing waste to remove fluoride from wastewater.

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The use of raw shrimp shells in the adsorption of highly polluted waters with Co2+

Cited by 12 publications

References 53 publications

Effective Removal of Cd(II) from Aqueous Solutions Using Theobroma cacao Agro-Industrial Waste

Effective Removal of Cd(II) from Aqueous Solutions Using Theobroma cacao Agro-Industrial Waste

Green synthetic photo-irradiated chitin-silver nanoparticles for antimicrobial applications

Removal of Fluoride from Aqueous Solution Using Shrimp Shell Residue as a Biosorbent after Astaxanthin Recovery

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