BioChem - DOS

Improving biodegradability and biogas production of wheat straw substrates using sodium hydroxide and hydrothermal pretreatments

Energy : technologies, resources, reserves, demands, impact, conservation, management, policy

Chandra, R.; Takeuchi, H.; Hasegawa, T.; Kumar, R.

This paper presents the results of an experimental methane fermentation study on untreated, NaOH and hydrothermal pretreated substrates of wheat straw. Experiments were conducted at 37 <SUP>o</SUP>C (mesophilic temperature). Substrates concentration were maintained at 4.45% VS (44.5 g VS/L). Untreated wheat straw substrate had resulted into specific methane and biogas production yields of 78.4 L/kg VS<SUB>a</SUB> and 188.4 L/kg VS<SUB>a</SUB>, respectively. The specific methane and biogas production yield of NaOH pretreated wheat straw substrate had resulted into 165.9 L/kg VS<SUB>a</SUB> and 353.2 L/kg VS<SUB>a</SUB>, respectively. Hydrothermal pretreated wheat straw substrate had resulted to yield specific methane and biogas production of 94.1 L/kg VS<SUB>a</SUB> and 205.7 L/kg VS<SUB>a</SUB>, respectively. NaOH pretreated substrate produced 87.5% higher biogas production and 111.6% higher methane production compared to the untreated wheat straw substrate. Hydrothermal pretreated substrate had resulted into an increase of 9.2% in biogas production and 20.0% in methane production compared to that of untreated wheat straw substrate.

2012

Pergamon Press ; Elsevier Science Ltd

0360-5442

1873-6785

43

1

pp.273-282

10.1016/j.energy.2012.04.029

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART63203662

Wheat straw; NaOH and hydrothermal pretreatments; Biogas; Methane; Renewable fuel