Journal
BIOPROCESS AND BIOSYSTEMS ENGINEERING
Volume 37, Issue 8, Pages 1627-1635Publisher
SPRINGER
DOI: 10.1007/s00449-014-1135-3
Keywords
Instant noodle waste; Bioethanol; Biodiesel; Saccharification; Transesterification
Funding
- Advanced Biomass R&D Center of Global Frontier Project - the Ministry of Science, ICT and Future Planning of Korea [ABC-2011-0031360]
- Advanced Production Technology Development Program of the Ministry of Agriculture, Food and Rural Affairs, Republic of Korea [309016-5]
- Creative Allied Project (CAP) of the Korea Research Council of Fundamental Science and Technology (KRCF)/Korea Institute of Science and Technology (KIST) [2E24832]
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Instant noodle manufacturing waste was used as feedstock to convert it into two products, bioethanol and biodiesel. The raw material was pretreated to separate it into two potential feedstocks, starch residues and palm oil, for conversion to bioethanol and biodiesel, respectively. For the production of bioethanol, starch residues were converted into glucose by alpha-amylase and glucoamylase. To investigate the saccharification process of the pretreated starch residues, the optimal pretreatment conditions were determined. The bioethanol conversion reached 98.5 % of the theoretical maximum by Saccharomyces cerevisiae K35 fermentation after saccharification under optimized pretreatment conditions. Moreover, palm oil, isolated from the instant noodle waste, was converted into valuable biodiesel by use of immobilized lipase (Novozym 435). The effects of four categories of alcohol, oil-to-methanol ratio, reaction time, lipase concentration and water content on the conversion process were investigated. The maximum biodiesel conversion was 95.4 %.
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