Details

Autor(en) / Beteiligte

• You, Qinghong
• Yin, Xiulian
• Zhao, Yuping
• Zhang, Yan

Titel

Biodiesel production from jatropha oil catalyzed by immobilized Burkholderia cepacia lipase on modified attapulgite

Ist Teil von

• Bioresource technology, 2013-11, Vol.148, p.202-207

Ort / Verlag

Kidlington: Elsevier Ltd

Erscheinungsjahr

2013

Quelle

MEDLINE

Beschreibungen/Notizen

• •Lipase from Pseudomonas cepacia was firstly immobilized onto modified ATP.•The important reaction parameters were studied by single-factor experiment.•More than 94% biodiesel yield was obtained by immobilized lipase.•Immobilized lipase was stable and retained 94.7% relative activity after 10 cycles. Lipase from Burkholderia cepacia was immobilized on modified attapulgite by cross-linking reaction for biodiesel production with jatropha oil as feedstock. Effects of various factors on biodiesel production were studied by single-factor experiment. Results indicated that the best conditions for biodiesel preparation were: 10g jatropha oil, 2.4g methanol (molar ratio of oil to methanol is 1:6.6) being added at 3h intervals, 7 wt% water, 10 wt% immobilized lipase, temperature 35°C, and time 24h. Under these conditions, the maximum biodiesel yield reached 94%. The immobilized lipase retained 95% of its relative activity during the ten repeated batch reactions. The half-life time of the immobilized lipase is 731h. Kinetics was studied and the Vmax of the immobilized lipases were 6.823mmolL−1. This immobilized lipase catalyzed process has potential industrial use for biodiesel production to replace chemical-catalyzed method.