![]() ![]() This was altered into four different sequential protocols: SQ1(sequence 1), SQ2 (sequence 2), SQ3 (sequence 3) and SQ4 (sequence 4) to study its effect on the physicochemical properties of chitosan. The conventional sequence of chemical isolation of chitosan follows the order of demineralization (DM), deproteinization (DP), decoloration (DC) and deacetylation (DA). Isolation of chitin and chitosan from dry powder shell of Penaeus monodon was achieved through chemical treatment with acid and alkali. Due to its peculiar nature, chitosan has found applications in science and engineering, food processing, medicine, agriculture and wastewater treatment. Therefore, the process conditions adopted in this study yielded chitosan of good quality, suitable as biopolymer coagulant for aquaculture wastewater treatment.Ĭhitosan is a biopolymer compound which is made up of β-1,4 glycosidic bonds. It was recorded in this study that 87.67% turbidity was successfully removed at 20 mg/L of chitosan dosage and 6.25 pH after 30 min settling time, while 21.43% salinity was removed at 5 mg/L of chitosan dosage, 7.5pH, and 30 min settling time. In addition, the high solubility (71.23%) and DDA (85.20%) suggested good coagulant potentials. The low moisture (0.38%) and ash (12.58%) content were an indication of good quality chitosan, while other properties such as water-binding capacity (WBC), fat-binding capacity (FBC), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and scanning electron microscope (SEM) confirmed the structure and the α-group, as well as the rough morphology of chitosan. Results show that 80 g of raw powder carapace yielded chitin and chitosan of 23.79% and 20.21%, respectively. Box-Behnken in RSM was used to determine the optimum operating conditions of chitosan dosage, pH, and settling time, after which quadratic models were developed and validated. ![]() A chemical method was applied in the present study for chitin and chitosan extraction from carapace of Macro-brachium rosenbergii and subsequent application for removal of turbidity and salinity from shrimp aquaculture wastewater. A simple technique called coagulation/flocculation utilizes biowaste from aquaculture to produce chitosan coagulant for wastewater treatment. The major sources of waste from aquaculture operations emanates from fish or shellfish processing and wastewater generation. ![]()
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |