Management of Biogas spent slurry for hastening the composting of agro residues.
Journal Title: Carbon - Science and Technology - Year 2015, Vol 7, Issue 2
Abstract
The demand for energy and the fertilizers are ever increasing. Organic farming has many advantages looking to the environment pollution, unproductive soil, less yields etc. By installation of a biogas plant serves both the purposes of meeting the fuel as well as obtaining manures. The organic manures need to be added in bulk to meet the nutrient demands of the crop as it is not in concentrated form like chemical fertilizers. Hence, biogas spent slurry is the best alternate for hastening the compost preparation of abundantly available crop residues as well as obtaining enriched compost as conventional method takes long time. Moreover, slurry is composed of major nutrients besides enzymes and a rich microflora. Based on the preliminary results, the present study was conducted at farmer’s field to know whether slurry could be used for degradation of agro residues. One ton of crop residues that included banana waste, sunflower and maize waste, leaf litter of horticultural crops were inoculated individually with 60 L of spent slurry along with consortia of degrading fungi and P-solubilising bacteria. After a retention period of 60 days, nutrients were analysed. The cultures along with slurry indicated 1.5 - 1.96 % N with reduction in C:N ratio between 1.6 - 1.82. The micronutrients also increased. Thus, it was concluded that efficient use of spent slurry can be made besides utilising the crop residues and the product for organic cultivation.
Authors and Affiliations
G. S. Geeta, M. Ashwini, T. H. Shankarappa
Keywords
Related Articles
- EP ID EP49955
- DOI -
- Views 222
- Downloads 0
Magnetic properties of electroless nickel-phosphorus coated multi-walled carbon nanotubes.
Nickel-phosphorus (EN) deposited multi-walled carbon nanotubes (MWCNTs) were prepared using an electroless plating technique. The D.C and A.C magnetic behavior of the composites showed that pre-acid treatment of the MWCN...
Efficiency enhancement of wood stove integrated with catalytic combustor and modified chimney
Domestic wood combustion produces smoke that is harmful to human health and increases fine particle level in the atmosphere. Some necessary changes in the design are essential in the domestic wood stove in order to impro...
Investigations on thermal properties, stress and deformation of Al/SiC metal matrix composite based on finite element method
AlSiC is a metal matrix composite which comprises of aluminium matrix with silicon carbide particles. It is characterized by high thermal conductivity (180-200 W/m K), and its thermal expansion are attuned to match other...
Experimental studies on improving the performance of electrochemical machining of high carbon, high chromium die steel using jet patterns
Electrochemical machining (ECM) is a non-traditional process used mainly to cut hard or difficult-to-cut metals, where the application of a more traditional process is not convenient. Stiff market competition and ever-gr...
Preparation of tailored carbons with meso- and micro- porosity via template synthesis route
A low cost templating approach to making non-ordered carbons with a tailored meso/micropore structure is described. A series of mesoporous carbons was prepared from polyfurfuryl alcohol and phenolic resin precursors by a...