Biogas production from rice straw by solid-state anaerobic digestion

Shitophyta, Lukhi Mulia; Budiyono, B.; Fuadi, Ahmad

doi:10.1063/1.4938310

Cited by 8 publications

(5 citation statements)

References 44 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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“…This research was conducted at the various TS contents of 20%, 22%, and 24%. The study of the biogas production at the variation of the TS content has been reported previously by Shitophyta et al (2015). The data on biogas volume of each TS contents are shown in Table 1.…”

Section: Resultsmentioning

confidence: 99%

Comparison of Kinetic Models for Biogas Production From Rice Straw

Shitophyta

Maryudi

Budiyono

2017

JBAT

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The rising of global energy demand has led to an energy crisis, especially fossil energy. The development of renewable energies is needed to overcome the energy crisis. Biogas is one of renewable energies (biofuels) which is developed to minimize the dependency on fossil fuels. Biogas can be derived from agricultural wastes such as rice straw. The aim of this research was to compare the kinetic models of biogas production form rice straw using the linear and exponential equations models. This research was conducted at the total solid (TS) content of 20%, 22% and 24%. The result showed that the exponential equation had a better correlation than the linear equation on the ascending period of biogas production, while linear equation was better than exponential equation during descending period.

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“…The evaluation items are in the form of continuous household energy availability, the use of livestock manure so that it does not cause environmental pollution, the availability of slurry organic fertilizer, which is biogas waste, as well as a sense of calm because it is not affected by the ups and downs of LPG prices and other energy sources. The biogas digester also produces bio-slurry, which can be used as plant fertilizer [38,39]. The activity of rural communities employing new and renewable energy has consequences for two actions that can empower the community, namely improving family income levels, particularly for the poor, and contributing to the drafting of village development plans [30].…”

Section: Outputmentioning

confidence: 99%

Empowering the Community in the Use of Livestock Waste Biogas as a Sustainable Energy Source

et al. 2022

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The purpose of this research is to evaluate the process of community empowerment in the use of biogas, as well as to determine the effect of community empowerment on the long-term viability of biogas as a sustainable source of energy. The quantitative descriptive research method was used to evaluate the empowerment program using the logic model approach. Multiple linear regression tests are used to analyze survey data collection techniques and data. In the study, 140 people participated as biogas users of livestock dung who have used biogas for at least one year. The findings revealed an evaluation of community empowerment in the good category input process (3.8), very good category planning (4.08), very good category implementation (4.11), monitoring and medium category assistance (3.49), and output in the good category (3,8). The multiple linear regression test results obtained the value of the equation Y = 3.690 + 0.200X1 + 0.42X2 – 0.38X3 + e. The results of the F test showed the value of Fcount > Ftable (3.061 > 2.67). This study concludes that community empowerment in the use of biogas has been successful and it has an impact on the community’s long-term use of biogas.

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Biogas production from rice straw by solid-state anaerobic digestion

Cited by 8 publications

References 44 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

Comparison of Kinetic Models for Biogas Production From Rice Straw

Empowering the Community in the Use of Livestock Waste Biogas as a Sustainable Energy Source

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