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- Title
Utilization of Seaweed (Gracilaria sp.) Liquid as Cost-Effective Macronutrients and Micronutrients for Bioethanol Production.
- Authors
Zakaria, Nur Z. I.; Gunny, Ahmad A. N.; Dzahir, Mohd I. H. M.; Ahmad, Abdul A.; Ismail, Ku S. K.; Mahmod, Safa S.; Javed, Muhammad; B-Yazdi, Namdar; Saifuddin, Md N. A. A.
- Abstract
Seaweed liquid waste from filter-squeezed drying process of Gracilaria sp. causes an unpleasant odour to the environment. Although this waste can partially be used as biofertilizer and heavy metals adsorbent, a bigger portion of the waste remains unutilized thus causing a problem to the environment. The present study aimed to utilize seaweed liquid waste as a supplement in fermentation media. To achieve this aim, Saccharomyces cerevisiae as a famous bioethanol producer was used to examine the ability of seaweed liquid to supply macronutrients and micronutrients in the media to produce ethanol. Interestingly, when used as a supplement in the fermentation media to produce ethanol, the liquid boosted ethanol production three folds from 200 mg/L of 2 % glucose alone to 600 mg/L of 2 % glucose in liquid. Additionally, the liquid was able to substitute yeast extract and peptone within YPD media to produce 647.48 mg/L ethanol as compared to only 542.39 mg/L with normal YPD which contains yeast extract and peptone. For that reason, the utilization of seaweed liquid as the supplement in the medium should be considered as an alternative cost-effective media for enhancing ethanol production without the addition of other nutrients.
- Subjects
GRACILARIA; ETHANOL as fuel; HEAVY metals; BIOFERTILIZERS; FERMENTATION
- Publication
CET Journal - Chemical Engineering Transactions, 2023, Vol 106, p1357
- ISSN
1974-9791
- Publication type
Article
- DOI
10.3303/CET23106227