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23 results on '"Suparmaniam, Uganeeswary"'

8. 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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10. 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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17. Abiotic stress as a dynamic strategy for enhancing high value phytochemicals in microalgae: Critical insights, challenges and future prospects

Author

Suparmaniam, Uganeeswary, Lam, Man Kee, Lim, Jun Wei, Tan, Inn Shi, Chin, Bridgid, Shuit, Siew Hoong, Lim, Steven, Pan, Yean Ling, Kiew, Peck Loo, Suparmaniam, Uganeeswary, Lam, Man Kee, Lim, Jun Wei, Tan, Inn Shi, Chin, Bridgid, Shuit, Siew Hoong, Lim, Steven, Pan, Yean Ling, and Kiew, Peck Loo

Abstract

Microalgae showcase an extraordinary capacity for synthesizing high-value phytochemicals (HVPCs), offering substantial potential for diverse applications across various industries. Emerging research suggests that subjecting microalgae to abiotic stress during cultivation and the harvesting stages can further enhance the accumulation of valuable metabolites within their cells, including carotenoids, antioxidants, and vitamins. This study delves into the pivotal impacts of manipulating abiotic stress on microalgae yields, with a particular focus on biomass and selected HVPCs that have received limited attention in the existing literature. Moreover, approaches to utilising abiotic stress to increase HVPCs production while minimising adverse effects on biomass productivity were discussed. The present study also encompasses a techno-economic assessment (TEA) aimed at pinpointing significant bottlenecks in the conversion of microalgae biomass into high-value products and evaluating the desirability of various conversion pathways. The TEA methodology serves as a valuable tool for both researchers and practitioners in the quest to identify sustainable strategies for transforming microalgae biomass into high-value products and goods. Overall, this comprehensive review sheds light on the pivotal role of abiotic stress in microalgae cultivation, promising insights that could lead to more efficient and sustainable approaches for HVPCs production.

Published
2023

18. 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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