Valorization of β-Chitin Extraction Byproduct from Cuttlefish Bone and Its Application in Food Wastewater Treatment

Abstract

The nontoxicity, worldwide availability and low production cost of cuttlefish bone products qualify them an excellent biocoagulant to treat food industry wastewater. In this study, cuttlefish bone liquid waste from the deproteinization step was used as a biocoagulant to treat food industry wastewater. This work concerns a waste that has never before been investigated. The objectives of this work were: the recovery of waste resulting from cuttlefish bone deproteinization, the replacementof chemical coagulants with natural ones to preserve the environment, and the enhancement ofthe value of fishery byproducts. A quantitative characterization of the industrial effluents of a Moroccan food processing plant was performed. The physicochemical properties of the raw cuttlefish bone powder and the deproteinization liquid extract were determined using specific analysis techniques: SEM/EDX, FTIR, XRD and 1H-NMR. The protein content of the deproteinization liquid was determined by OPA fluorescent assay. The zeta potential of the liquid extract was also determined. The obtained analytical results showed that the deproteinization liquid waste contained an adequate amount of soluble chitin fractions that could be used in food wastewater treatment. The effects of the coagulant dose and pH on the food industrial effluents were studied to confirm the effectiveness of the deproteinization liquid extract. Under optimal conditions, the coagulant showed satisfactory results. Process optimization was performed using the Box–Behnken design and response surface methodology. Thus, the optimal removal efficiencies predicted using this model for turbidity (99.68%), BOD5 (97.76%), and COD (82.92%) were obtained at a dosage of 8 mL biocoagulant in 0.5 L of food processing wastewater at an alkaline pH of 11.

β‐Chitin and chitosan from waste shells of edible mollusks as a functional ingredient

“…For instance, chitosan from cephalopod waste proved effective in removing cadmium (Cd) from aqueous solutions, with optimal conditions at pH 7, 42.5 • C, 220 min, and 1 g/L sorbent dosage (Kavisri et al, 2023), highlighting the role of surface pores in adsorption. Nouj et al (2022) demonstrated that β-chitin from cuttlefish bone significantly reduced turbidity, BOD, and COD in food processing wastewater. Similarly, Siswoyo et al (2023) found that chitosan from blood cockle shells reduced total suspended solids and turbidity in well-water.…”

“…Nouj et al. (2022) demonstrated that β‐chitin from cuttlefish bone significantly reduced turbidity, BOD, and COD in food processing wastewater. Similarly, Siswoyo et al.…”

“…Their unique chemical structure (β-chitin), stability, chelation behavior, high reactivity, and selectivity toward contaminants make them excellent for adsorption (Bhatnagar & Sillanpää, 2009;Boamah et al, 2015). Recent studies have explored mollusk-derived β-chitin and chitosan as adsorbents for wastewater contaminants (Kavisri et al, 2023;Nouj et al, 2022;Siswoyo et al, 2023). For instance, chitosan from cephalopod waste proved effective in removing cadmium (Cd) from aqueous solutions, with optimal conditions at pH 7, 42.5 • C, 220 min, and 1 g/L sorbent dosage (Kavisri et al, 2023), highlighting the role of surface pores in adsorption.…”

“…Meanwhile, the structural and functional properties of chitin and its derivatives from various mollusk shells have been reported earlier (Akpan et al, 2018;Aylanc et al, 2020;Cabrera-Barjas et al, 2021;Hazeena et al, 2022;Mohan et al, 2019;Nouj et al, 2022). However, no comprehensive review were focused on the edible mollusk shell waste derived chitin and chitosan.…”

Novel chemically reduced cobalt-doped g-C3N4 (CoCN-x) as a highly heterogeneous catalyst for the super-degradation of organic dyes via peroxymonosulfate activation

“…[4][5][6][7][8] In the last few years, numerous scientific papers have been published with the aim of finding solutions to this environmental contamination problem. [9][10][11][12][13][14][15][16] Despite this vast scientific production, researchers in the field are still not satisfied with the results. 17,18 Further, several solutions were proposed aiming to improve either the process or the material used in the polluted water treatment.…”