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Your search keyword '"Suparmaniam, Uganeeswary"' showing total 16 results
Start Over Author "Suparmaniam, Uganeeswary" Publication Type Academic Journals
16 results on '"Suparmaniam, Uganeeswary"'

7. Fundamental alteration of cellular biochemicals from attached microalgae onto palm kernel expeller waste upon optimizing the growth environment in forming adhesion complex

Author

Rawindran, Hemamalini, Khoo, Kuan Shiong, Ethiraj, Baranitharan, Suparmaniam, Uganeeswary, Leong, Wai Hong, Raksasat, Ratchaprapa, Liew, Chin Seng, Sahrin, Nurul Tasnim, Lam, Man Kee, Kiatkittipong, Worapon, Lim, Jun Wei, Zango, Zakariyya Uba, Shahid, Muhammad Kashif, Abdelghani, Heba Taha M., and Ng, Hui-Suan

Published
2023
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9. Mechanistic behaviour of Chlorella vulgaris biofilm formation onto waste organic solid support used to treat palm kernel expeller in the recent Anthropocene

Author

Rawindran, Hemamalini, Syed, Rabbani, Alangari, Abdulaziz, Khoo, Kuan Shiong, Lim, Jun Wei, Sahrin, Nurul Tasnim, Suparmaniam, Uganeeswary, Raksasat, Ratchaprapa, Liew, Chin Seng, Leong, Wai Hong, Kiatkittipong, Worapon, Shahid, Muhammad Kashif, Hara, Hirofumi, and Shaharun, Maizatul Shima

Published
2023
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14. Assessing the effects of operating parameters on flocculation of Chlorella vulgaris using bioflocculants extracted from miscellaneous waste biomass

Author

Ng Zhi Min, Suparmaniam Uganeeswary, Lam Man Kee, Lim Jun Wei, Shuit Siew Hoong, Lim Steven, Chin Bridgid Lai Fui, and Kiew Peck Loo

Subjects
Environmental sciences, GE1-350
Abstract

Harvesting of microalgae is one of the main challenges in the production of biodiesel due to the small cell size of microalgae cells. Chemical flocculants have been generally used in the harvesting of microalgae, but they are harmful to the environment and relatively costly. Therefore, the utilization of waste biomass in producing bioflocculants is the current research niche to introduce environmental-friendly harvesting method and to minimize the cost of biodiesel production. Thus, in the current work, flocculation Chlorella vulgaris using mild acid-extracted bioflocculants from miscellaneous waste biomass (cockle shell, peanut shell and banana peel) were conducted by varying the pH values, the dosage of bioflocculants and temperatures. Cockle shell bioflocculant demonstrated the best flocculation performance, with highest flocculation efficiency of 85.2% compared to the peanut shell bioflocculant with flocculation efficiency of 37% and banana peel bioflocculant with flocculation efficiency of 16.3%. The optimum flocculation conditions for cockle shell bioflocculant were determined as follow: pH 9, bioflocculant dosage of 140mg/L and temperature of 30oC. The findings herein presented practical applicability of bioflocculants extracted from cockle shell for safe, rapid and inexpensive microalgae harvesting.

Published
2021
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16. Flocculation of Chlorella vulgaris by shell waste-derived bioflocculants for biodiesel production: Process optimization, characterization and kinetic studies.

Author

Suparmaniam U, Lam MK, Uemura Y, Shuit SH, Lim JW, Show PL, Lee KT, Matsumura Y, and Le PTK

Subjects
Aquaculture, Biomass, Ions, Kinetics, Microalgae, Spectroscopy, Fourier Transform Infrared, Temperature, Biofuels, Chlorella vulgaris physiology, Flocculation
Abstract

Flocculants are foreign particles that aggregate suspended microalgae cells and due to cost factor and toxicity, harvesting of microalgae biomass has shifted towards the use of bioflocculants. In this study, mild acid-extracted bioflocculants from waste chicken's eggshell and clam shell were used to harvest Chlorella vulgaris that was cultivated using chicken compost as nutrient source. It was found that a maximum of 99% flocculation efficiency can be attained at pH medium of 9.8 using 60 mg/L of hydrochloric acid-extracted chicken's eggshell bioflocculant at 50 °C of reaction temperature. On the other hand, 80 mg/L of hydrochloric acid-extracted clam shell bioflocculant was sufficient to recover C. vulgaris biomass at pH 9.8 and optimum temperature of 40 °C. The bioflocculants and bioflocs were characterized using microscopic, zeta potential, XRD, AAS and FT-IR analysis. The result revealed that calcium ions in the bioflocculants are the main contributor towards the flocculation of C. vulgaris, employing charge neutralization and sweeping as possible flocculation mechanisms. The kinetic parameters were best fitted pseudo-second order which resulted in R 2 of 0.99 under optimal flocculation temperature. The results herein, disclosed the applicability of shell waste-derived bioflocculants for up-scaled microalgae harvesting for biodiesel production., (Copyright © 2019 Elsevier B.V. All rights reserved.)

Published
2020
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