Title:
Apply Paddy Straw for Energy Production to Reduce in Situ Straw Burning in the Mekong Delta of Vietnam
Author(s):
Nguyen, V.C.N., Nguyen, M.T., Tran, S.N., Nguyen, H.C., Le, H.V., Ingvorsen, K.
Document(s):
Paper
Poster
Abstract:
The Mekong Delta - a “rice bowl” of Vietnam - discharges around 30 million tons of paddy straw annually but most of straw is in situ burning that causes loss of precious nutrients and polluting the environment. Meanwhile, anaerobic technology was introduce in the region for long time but not yet become popular due to lack of input materials. The lab-scale 20 L anaerobic digesters were applied to co-ferment paddy straw (with sizes of 1.0 cm, 10.0 cm, 20.0 cm, original size) and pig manure (mixing ratio of 50%:50% based on their organic dry matter values) in 60 continuous days. The recorded values of temperature (25.3 to 30.30C), pH (6.74 ± 0.18), and redox potential (-316.4 to -128.2 mV) of almost treatments were suitable for activities of methanogenic micro-organisms. The biogas yield of treatment with straw size of 1.0 cm was 691.05 L/kg ODMfermented, of 10.0 cm - 687.79 L/kg ODMfermented, of 20.0 cm - 685.08 L/kg ODMfermented and original size - 680.44 L/kg ODMfermented which significant different to the treatment of 100% pig manure. The results confirmed rice straw could apply as additional material to the pig manure at anaerobic digester to produce biogas that eliminate in situ straw burning.
Keywords:
anaerobic co-fermentation, paddy straw, in situ straw burning, the mekong delta of vietnam
Topic:
Biomass Resources
Subtopic:
Biomass potentials and biomass mobilisation
Event:
23rd European Biomass Conference and Exhibition
Session:
1CV.3.33
Pages:
299 - 303
ISBN:
978-88-89407-516
Paper DOI:
10.5071/23rdEUBCE2015-1CV.3.33
Price:
FREE
