Abstract
Transgenic Vetiveria zizanioides were anaerobic digested in a batch laboratory scale reactor at mesophilic conditions (30°C). Grinding and shearing, two kinds of processing methods were used. During total fermentation time of 80 days, the production potential of biogas were 310 mL/g·TS, 332 mL/g·VS in the grinding processing group and 322 mL/g·TS, 349 mL/g·VS in the shearing processing group. The results show that the shearing processing was slightly better than the grinding processing for transgenic V. zizanioides digestion. Key words: Transgenic Vetiveria zizanioides, mesophilic, anaerobic digestion, biogas production potential.
Highlights
Vetiveria zizanioides (Linn.) Nash, referred to as Gramineae vetiveria, is a tall tufted, perennial, scented grass with an abundant network of roots
Vetiver can be used as the raw material of essential oil extraction, a huge potential for development (Mao et al, 2008; Feng et al, 2009; Hu et al, 2006)
According to the total solid (TS) of feedstock and inoculums, experimental group, including grinding group and shearing group, was chosen (4%) as objective fermentation concentration, mass fraction of inoculums set (30%) to preparation
Summary
Vetiveria zizanioides (Linn.) Nash, referred to as Gramineae vetiveria, is a tall tufted, perennial, scented grass with an abundant network of roots It grows naturally in swamp areas of Northern India, Bangladesh, and is probably naturalized in many parts of Southeast. Vetiver is both xerophytes and aquatic plants, and can be grown in very wide pH value environment and various types of soil (Xu, 1999). It is widely used in purifying water quality, water and soil conservation, improvement derelict land and desert land, weave handicraft, etc (Jiang et al, 2008). Vetiver can be used as the raw material of essential oil extraction, a huge potential for development (Mao et al, 2008; Feng et al, 2009; Hu et al, 2006).
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