Biogas Production from Surplus Plant Biomass Feedstock: Some Highlights of Indo-UK R&amp;D Initiative

Patowary, Dipam; West, Helen; Clarke, Michèle L.; Baruah, Dipal

doi:10.1016/j.proenv.2016.07.094

Cited by 17 publications

(8 citation statements)

References 14 publications

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“…Two primary feedstocks viz. Ipomoea carnea and rice straw are abundantly available biomass feedstock with potential for biogas production (Ganesh et al, 2008;Deshmukh and Bartakke, 2012;Patowary et al, 2016;Contreras et al, 2012;Shitophyta et al, 2015). However, N content of Ipomoea carnea is relatively higher that narrows down the C:N ratio (~30) facilitating its quick anaerobic digestion during biogas production.…”

Section: Description Of Feedstockmentioning

confidence: 99%

Assessment of by-products of bioenergy systems (anaerobic digestion and gasification) as potential crop nutrient

2017

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Alternative fertilizer resources have drawn attention in recent times in order to cope up with ever increasing demand for fertilizer. By-products of bioenergy system are considered favourable as organic fertilizer due to their ability to recycle plant nutrients. Present study evaluates fertilizer suitability of by-products of two bioenergy systems viz. 3 types of anaerobic digestion by-products (digestate) from local surplus biomass such as cowdung, Ipomoea carnea:cowdung (60:40) and ricestraw:green gram stover:cowdung (30:30:40) and one gasification by-product (biochar) from rice husk. Digestates were assessed considering 4 different application options of each viz. whole, solid, liquid and ash from solid digestates. Digestate characteristics (organic matter, macronutrients, micronutrients and heavy metal content) were found to be a function of feedstock and processing (solid liquid separation and ashing). Ipomoea carnea based digestates in all application options showed comparatively higher N, P, K, NH-N, Ca, Mg, S and micro nutrient content than other digestates. Separation concentrated plant nutrients and organic matter in solid digestates, making these suitable both as organic amendments and fertilizer. Separated liquid digestate shared larger fraction of ammonium nitrogen (61-91% of total content), indicating their suitability as readily available N source. However, fertilizer application of liquid digestate may not match crop requirements due to lower total nutrient concentration. Higher electrical conductivity of the liquid digestates (3.4-9.3mScm) than solid digestates (1.5-2mScm) may impart phyto-toxic effect upon fertilization due to salinity. In case of by-products with unstable organic fraction i.e. whole and solid digestates of rice straw:green gram stover:cowdung digestates (Humification index 0.7), further processing (stabilization, composting) may be required to maximize their fertilizer benefit. Heavy metal contents of the by-products were found to be within the permitted range specified for organic fertilizer (vermicompost) in India. However, higher Al content of the digestates in whole, solid and ash phase (0.06-16.97gkg fresh matter) can be a concern in acid soil which may cause Al toxicity. Understanding on agrochemical characteristics of bioenergy by-products with varying feedstock and application option is expected to promote their valorization opportunities considering user specific requirements. In the context of agriculturally dominant but energy deficient rural Indian scenario, integrated production of bioenergy and by-product based fertilizer could be very significant to meet the critical additional requirement of both energy and fertilizer.

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Section: Description Of Feedstockmentioning

confidence: 99%

Assessment of by-products of bioenergy systems (anaerobic digestion and gasification) as potential crop nutrient

2017

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“…Energy is a fundamental need for human survival. World oil prices and fuel requirements are increasing while crude oil reserves are depleting, so that sustainable energy supply has become one of the main challenges that humans will face in the future [26]. This moves the current economy towards alternative energy sources [4].…”

Section: Introductionmentioning

confidence: 99%

“…One of the sustainable biomass utilizations as a renewable energy source is biogas. Flexible renewable energy sources are derived from anaerobic digestion of manure, waste, residue, energy crops, water weeds [26,38]. Biogas is a carbon-neutral source One of renewable energy, generated from the anaerobic digestion process of biodegradable waste, plant biomass, crop residues and manure.…”

Section: Introductionmentioning

confidence: 99%

Study of C/N Ratio Effect on Biogas Production of Carica Solid Waste by SS-AD Method And LS-AD

et al. 2018

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Biogas is a renewable energy which can be used as an alternative source to replace fossil fuels. Recently, the use of energy has become an important issue because the oil sources and natural gas are depleting. Utilization of carica waste to produce biogas can reduce the consumption of commercial energy sources such as kerosene as well as the use of firewood. Biogas is produced by the process of organic material digestion by certain anaerobic bacterial activity in anaerobic digester. In this study we studied the influence of LS-AD and SS-AD methods, the effect of C / N ratio on biogas yield obtained and kinetics of biogas production reaction. The study was conducted by making a total solid variation of 7%, 9%, 11%, 13%, 19%, 21%, 23% and C/N ratio 25 and 30. The study started with carica waste collection process and examination of the total composition of solids and water content. Thereafter, calculation and determination of variation of C / N ratio by mixing the substrate with inoculum and urea into the reactor. Observe the volume of biogas produced every two-day intervals. The highest biogas production rate of 1.7825 ml/g TS day was obtained from carica solid waste variable by liquid state anaerobic disgestion and C/N 25.

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“…These elements are heat loss through walls,ceiling, ground doors and ventilation. Only the last element calculations are shown below because it differs from other types of heat loss and it contains some specific information to be presented.The results of these calculations are presented in table (2).…”

Section: Heat Load Calculationsmentioning

confidence: 99%

“…The second problem is the local legislations that prevent private use of Groundwater that is essential for geothermal heating process. The third renewable energy source that can be used in Jordan is biogas.Many researchers have studied different aspects of biogas, like changing the components of cow dung as in [2]. Others have used some materials as a catalysts of the anaerobic digestions process as in [3] who used silica gel as the catalyst material for the cow dung.…”

Section: Introductionmentioning

confidence: 99%

Use of Biogas Energy in Poultry Farming Heating

Masalha¹,

Elayyan²,

Issa³

2017

THE IJES

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Biogas Production from Surplus Plant Biomass Feedstock: Some Highlights of Indo-UK R&D Initiative

Cited by 17 publications

References 14 publications

Assessment of by-products of bioenergy systems (anaerobic digestion and gasification) as potential crop nutrient

Assessment of by-products of bioenergy systems (anaerobic digestion and gasification) as potential crop nutrient

Study of C/N Ratio Effect on Biogas Production of Carica Solid Waste by SS-AD Method And LS-AD

Use of Biogas Energy in Poultry Farming Heating

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