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Mukesh Kumar,Harmanjit Singh Dosanjh,Harminder Singh 한국섬유공학회 2019 Fibers and polymers Vol.20 No.4
In this work, nano cobalt ferrite was modified with biopolymer sodium alginate in alginic form and the prepared magnetic composite (CoFN-Alg) was examined by different techniques such as Fourier transform infrared spectroscopy,transmission electron microscope with energy dispersive spectra, X-ray diffraction, thermo-gravimetric analysis, and Brunauer-Emmett-Teller equation. The CoFN-Alg composite was used as adsorbent to remove Congo red (CR), brilliant green (BG), and methylene blue (MB) dyes from single and ternary dye systems. The adsorption of different dyes on CoFNAlg composite was studied at varying parameters such as contact time, varying pH, adsorbent dose, and initial concentration at different temperatures through batch mode. Results of kinetic studies revealed that the adsorption data of different dyes in single system as well as ternary system was best fitted in Lagergren pseudo second order model. Similarly, the adsorption equilibrium data was well correlated by Langmuir isotherm model in both types of dye systems. In single system, the maximum adsorption capacities of CR, BG, and MB dyes for CoFN-Alg composite were 93.0, 92.1, 95.8 mg/g and for ternary system were 60.0, 64.4, and 76.9 mg/g, respectively. The calculated adsorption thermodynamic parameters confirmed that adsorption process was spontaneous in nature. The results of regeneration studies concluded that CoFN-Alg composite retained around 78 % regeneration efficiency even after five successive cycles in single as well as ternary system. The present study revealed that CoFN-Alg composite might be suitable alternative for the removal of different dyes in single as well as multi-component system.
이승한,Mohammad Moniruzzaman,배진호,성민지,송유진,Bakshish Dosanjh,배승철 한국수산과학회 2016 Fisheries and Aquatic Sciences Vol.19 No.4
A feeding trial was conducted to evaluate the effects of two different sizes of extruded pellets (EP) (EP1 - 3 mm or EP2 - 5 mm) and a moist pellet (MP) in olive flounder, Paralichthys olivaceus, reared in semi-recirculation system. A total of 450 fish with an average initial weight of 5.0 ± 0.2 g (mean ± SD) were fed one of the three experimental diets in triplicate groups. At the end of a 6-week feeding trial, weight gain, specific growth rate, and feed efficiency of fish fed EP diets were significantly higher than those of fish fed MP (P < 0.05). Water quality parameters like turbidity, total ammonia nitrogen, and total phosphorous from tanks of fish fed EP1 and EP2 were significantly lower than those from tanks of fish fed MP. Blood plasma glutamic oxaloacetic transaminase and glucose concentration were significantly higher in fish fed MP diet compared to fish fed EP diets (P < 0.05). Whole body crude protein contents in fish fed EP diets were higher than those from the fish fed MP diet. Whole body amino acid content like threonine, aspartic acid, serine, tyrosine, and cystine were found to be significantly higher in fish fed EP diets than those in fish fed MP diet. In considering overall performance of olive flounder, EP2 diet could be recommended for the successful aquaculture of this important fish species.
Lee, Seunghan,Moniruzzaman, Mohammad,Bae, Jinho,Seong, Minj,Song, Yu-jin,Dosanjh, Bakshish,Bai, Sungchul C. The Korean Society of Fisheries and Aquatic Scienc 2016 Fisheries and Aquatic Sciences Vol.19 No.8
A feeding trial was conducted to evaluate the effects of two different sizes of extruded pellets (EP) ($EP_1$ - 3 mm or $EP_2$ - 5 mm) and a moist pellet (MP) in olive flounder, Paralichthys olivaceus, reared in semi-recirculation system. A total of 450 fish with an average initial weight of $5.0{\pm}0.2g$ (mean ${\pm}$ SD) were fed one of the three experimental diets in triplicate groups. At the end of a 6-week feeding trial, weight gain, specific growth rate, and feed efficiency of fish fed EP diets were significantly higher than those of fish fed MP (P < 0.05). Water quality parameters like turbidity, total ammonia nitrogen, and total phosphorous from tanks of fish fed $EP_1$ and $EP_2$ were significantly lower than those from tanks of fish fed MP. Blood plasma glutamic oxaloacetic transaminase and glucose concentration were significantly higher in fish fed MP diet compared to fish fed EP diets (P < 0.05). Whole body crude protein contents in fish fed EP diets were higher than those from the fish fed MP diet. Whole body amino acid content like threonine, aspartic acid, serine, tyrosine, and cystine were found to be significantly higher in fish fed EP diets than those in fish fed MP diet. In considering overall performance of olive flounder, $EP_2$ diet could be recommended for the successful aquaculture of this important fish species.