Conversion of microalgal lipids to biodiesel using chromium-aluminum mixed oxide as a heterogeneous solid acid catalyst
Abstract Heterogeneous solid acid catalyzed conversion of microalgal lipids to biodiesel is a scarcely studied area. In this study chromium-aluminum mixed oxide catalyst was investigated for catalytic conversion of microalgal lipids to biodiesel. Lipids from Scenedesmus obliquus grown in an open raceway pond (3000L) was used as feedstock. Reaction variables such as temperature, methanol to oil molar ratio and catalyst amount were optimized using response surface methodology. FAME conversion of 98.28% was achieved using chromium-aluminum catalyst at 80 °C, with methanol to oil molar ratio of 20:1 and catalyst amount of 15%. Catalytic efficiency of this heterogeneous solid acid catalyst was compared to a homogeneous acid catalyst (sulfuric acid). Chromium-aluminum mixed oxide catalyst can be effectively used for 4 batches of conversion reactions without significant loss in its activity. Highlights Chromium-aluminum mixed oxide catalyst used for conversion of S. obliquus lipids. CRAL showed 98.28% FAME conversion in 4 h reaction. CRAL can be reused upto 4 batches without much loss in FAME conversion. CRAL require low methanol to oil ratio of 20:1. Higher conversion observed with heterogeneous catalyst than homogeneous catalyst. Graphical abstract [DISPLAY OMISSION]
유료 다운로드의 경우 해당 사이트의 정책에 따라 신규 회원가입, 로그인, 유료 구매 등이 필요할 수 있습니다. 해당 사이트에서 발생하는 귀하의 모든 정보활동은 NDSL의 서비스 정책과 무관합니다.
원문복사신청을 하시면, 일부 해외 인쇄학술지의 경우 외국학술지지원센터(FRIC)에서
무료 원문복사 서비스를 제공합니다.
NDSL에서는 해당 원문을 복사서비스하고 있습니다. 위의 원문복사신청 또는 장바구니 담기를 통하여 원문복사서비스 이용이 가능합니다.
- 이 논문과 함께 출판된 논문 + 더보기