Novel Liquid Chitosan-Based Biocoagulant for Treatment Optimization of Fish Processing Wastewater from a Moroccan Plant
A novel liquid chitosan-based biocoagulant for treating wastewater from a Moroccan fish processing plant was successfully prepared from shrimp shells (<i>Parapenaeus longirostris</i>), the most abundant fish by-products in the country. The shells were characterized using scanning electro...
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MDPI AG
2021-11-01
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| Online Access: | https://www.mdpi.com/1996-1944/14/23/7133 |
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| author | Nisrine Nouj Naima Hafid Noureddine El Alem Igor Cretescu |
| author_facet | Nisrine Nouj Naima Hafid Noureddine El Alem Igor Cretescu |
| author_sort | Nisrine Nouj |
| collection | DOAJ |
| description | A novel liquid chitosan-based biocoagulant for treating wastewater from a Moroccan fish processing plant was successfully prepared from shrimp shells (<i>Parapenaeus longirostris</i>), the most abundant fish by-products in the country. The shells were characterized using scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction, and Fourier transforms infrared spectroscopy. Using chitosan without adding acetic acid helps to minimize its negative impact on the environment. At the same time, the recovery of marine shellfish represents a promising solution for the management of solid fish waste. In order to test the treatment efficiency of the biocoagulant developed, a qualitative characterization of these effluents was carried out beforehand. The optimization process was conducted in two steps: jar-test experiments and modeling of the experimental results. The first step covered the preliminary assessment to identify the most influential operational parameters (experimental conditions), whereas the second step concerned the study of the effects of three significant operational parameters and their interactions using a Box–Behnken experimental design. The variables involved were the concentration of coagulant (X<sub>1</sub>), the initial pH (X<sub>2</sub>), and the temperature (X<sub>3</sub>) of the wastewater samples, while the responses were the removal rates of turbidity (Y<sub>1</sub>) and BOD<sub>5</sub> (Y<sub>2</sub>). The regression models and response surface contour plots revealed that chitosan as a liquid biocoagulant was effective in removing turbidity (98%) and BOD<sub>5</sub> (53%) during the treatment. The optimal experimental conditions were found to be an alkaline media (pH = 10.5) and a biocoagulant dose of 5.5 mL in 0.5 L of fish processing wastewater maintained at 20 °C. |
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| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T04:50:26Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-8062da95113443e09c72004c6765a9812023-11-23T02:38:46ZengMDPI AGMaterials1996-19442021-11-011423713310.3390/ma14237133Novel Liquid Chitosan-Based Biocoagulant for Treatment Optimization of Fish Processing Wastewater from a Moroccan PlantNisrine Nouj0Naima Hafid1Noureddine El Alem2Igor Cretescu3Material and Environmental Laboratory, Department of Chemistry, Faculty of Sciences of Agadir, IBN ZOHR University, Agadir 80000, MoroccoMaterial and Environmental Laboratory, Department of Chemistry, Faculty of Sciences of Agadir, IBN ZOHR University, Agadir 80000, MoroccoMaterial and Environmental Laboratory, Department of Chemistry, Faculty of Sciences of Agadir, IBN ZOHR University, Agadir 80000, MoroccoDepartment of Environmental Engineering and Management, Faculty of Chemical Engineering and Environmental Protection, “Gheorghe Asachi” Technical University of Iasi, 700050 Iasi, RomaniaA novel liquid chitosan-based biocoagulant for treating wastewater from a Moroccan fish processing plant was successfully prepared from shrimp shells (<i>Parapenaeus longirostris</i>), the most abundant fish by-products in the country. The shells were characterized using scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction, and Fourier transforms infrared spectroscopy. Using chitosan without adding acetic acid helps to minimize its negative impact on the environment. At the same time, the recovery of marine shellfish represents a promising solution for the management of solid fish waste. In order to test the treatment efficiency of the biocoagulant developed, a qualitative characterization of these effluents was carried out beforehand. The optimization process was conducted in two steps: jar-test experiments and modeling of the experimental results. The first step covered the preliminary assessment to identify the most influential operational parameters (experimental conditions), whereas the second step concerned the study of the effects of three significant operational parameters and their interactions using a Box–Behnken experimental design. The variables involved were the concentration of coagulant (X<sub>1</sub>), the initial pH (X<sub>2</sub>), and the temperature (X<sub>3</sub>) of the wastewater samples, while the responses were the removal rates of turbidity (Y<sub>1</sub>) and BOD<sub>5</sub> (Y<sub>2</sub>). The regression models and response surface contour plots revealed that chitosan as a liquid biocoagulant was effective in removing turbidity (98%) and BOD<sub>5</sub> (53%) during the treatment. The optimal experimental conditions were found to be an alkaline media (pH = 10.5) and a biocoagulant dose of 5.5 mL in 0.5 L of fish processing wastewater maintained at 20 °C.https://www.mdpi.com/1996-1944/14/23/7133biocoagulationseafood processing wastesfish by-productsindustrial effluentsresponse surface methodologyBox–Behnken experimental design |
| spellingShingle | Nisrine Nouj Naima Hafid Noureddine El Alem Igor Cretescu Novel Liquid Chitosan-Based Biocoagulant for Treatment Optimization of Fish Processing Wastewater from a Moroccan Plant Materials biocoagulation seafood processing wastes fish by-products industrial effluents response surface methodology Box–Behnken experimental design |
| title | Novel Liquid Chitosan-Based Biocoagulant for Treatment Optimization of Fish Processing Wastewater from a Moroccan Plant |
| title_full | Novel Liquid Chitosan-Based Biocoagulant for Treatment Optimization of Fish Processing Wastewater from a Moroccan Plant |
| title_fullStr | Novel Liquid Chitosan-Based Biocoagulant for Treatment Optimization of Fish Processing Wastewater from a Moroccan Plant |
| title_full_unstemmed | Novel Liquid Chitosan-Based Biocoagulant for Treatment Optimization of Fish Processing Wastewater from a Moroccan Plant |
| title_short | Novel Liquid Chitosan-Based Biocoagulant for Treatment Optimization of Fish Processing Wastewater from a Moroccan Plant |
| title_sort | novel liquid chitosan based biocoagulant for treatment optimization of fish processing wastewater from a moroccan plant |
| topic | biocoagulation seafood processing wastes fish by-products industrial effluents response surface methodology Box–Behnken experimental design |
| url | https://www.mdpi.com/1996-1944/14/23/7133 |
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