scholarly journals Organic Fertilizer Production and Application in Vietnam

2019 ◽  
Author(s):  
Pham Van Toan ◽  
Ngo Duc Minh ◽  
Dao Van Thong
Keyword(s):  
Organic Fertilizer ◽  
Fertilizer Production

Energy and cost analysis of organic fertilizer production in Nigeria

Energy ◽  
2010 ◽  
Vol 35 (1) ◽  
pp. 332-340 ◽  
Author(s):  
D.A. Fadare ◽  
O.A. Bamiro ◽  
A.O. Oni
Keyword(s):  
Cost Analysis ◽  
Organic Fertilizer ◽  
Fertilizer Production

scholarly journals Potential of energy and nutrient recovery from biodegradable waste by co-treatment in Lithuania

2011 ◽  
Vol 30 (2) ◽  
pp. 181-189 ◽  
Author(s):  
Jouni Havukainen ◽  
Kestutis Zavarauskas ◽  
Gintaras Denafas ◽  
Mika Luoranen ◽  
Helena Kahiluoto ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Sewage Sludge ◽  
Solid Fraction ◽  
Organic Fertilizer ◽  
Nutrient Recovery ◽  
Biodegradable Materials ◽  
Biodegradable Waste ◽  
Fertilizer Production

Biodegradable waste quantities in Lithuania and their potential for the co-treatment in renewable energy and organic fertilizer production were investigated. Two scenarios were formulated to study the differences of the amounts of obtainable energy and fertilizers between different ways of utilization. In the first scenario, only digestion was used, and in the second scenario, materials other than straw were digested, and straw and the solid fraction of sewage sludge digestate were combusted. As a result, the amounts of heat and electricity, as well as the fertilizer amounts in the counties were obtained for both scenarios. Based on this study, the share of renewable energy in Lithuania could be doubled by the co-treatment of different biodegradable materials

Local Technical Knowledge and Efficiency of Organic Fertilizer Production in South Mali: Diversity of Practices

2013 ◽  
Vol 37 (6) ◽  
pp. 672-699 ◽  
Author(s):  
Mélanie Blanchard ◽  
Jonathan Vayssieres ◽  
Patrick Dugué ◽  
Eric Vall
Keyword(s):  
Organic Fertilizer ◽  
Technical Knowledge ◽  
Fertilizer Production

Thermophilic solid state anaerobic digestion of switchgrass for liquid digestate reuse and organic fertilizer production

2019 ◽  
Vol 35 (5) ◽  
pp. 503-512 ◽  
Author(s):  
Jianjun Zang ◽  
Jason C. H. Shih ◽  
Jay J. Cheng ◽  
Zhimin Liu ◽  
Ying Liu ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Solid State ◽  
Biogas Production ◽  
Organic Fertilizer ◽  
Reduction Rate ◽  
Total Solid ◽  
Normal Operation ◽  
Lag Phase ◽  
Nutrient Contents ◽  
Fertilizer Production

AbstractTwo solid state anaerobic digesters (SSADs), 15 L each, were set up for co-digestion of switchgrass with primary digestate of a liquid anaerobic digester (LAD) and the recirculating leachate. Both the LAD and two SSADs were operated at 50°C. The results showed that the bioreactors were not started up stably until day 16 and day 47 for reactors A and B, respectively. The supplement of LAD digestate or injection of sodium hydroxide (NaOH) into the recirculating leachate readily reinitiated the biogas production to normal daily high rates of the two individual SSADs, one on day 16 and the other on day 47. In contrast to reactor A, there was a longer lag phase for bioreactor B, however, it showed 46.2% [77.9 vs 53.3 L kg−1 volatile solid (VS)] more cumulative biogas yields, and higher reduction rate of total solid, VS, cellulose and hemicellulose of 29.5, 31, 40.6 and 15%, respectively, which was likely due to optimized pH and NaOH pretreated switchgrass during start-up period. Methane contents of biogas increased gradually and stabilized at 50% for both reactors, indicating a normal operation of anaerobic digestion lasted for at least 100 days. The determined parameters of digested residues met China organic fertilizer standard (NY 525-2012) except for high moisture and low total nutrient contents. Therefore, the product of SSAD has the potential value of organic fertilizer. It is concluded that the LAD digestate can be reused as inoculums by co-digestion with agricultural residues for biogas and organic fertilizer production in SSAD.

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