Determination of the quality of biogas by flame temperature measurement

Mandal, Tanusri; Kiran, Babu A; Mandal, N.

doi:10.1016/s0196-8904(99)00009-6

Cited by 17 publications

(12 citation statements)

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“…The mean results for the percentages of CH 4 and CO 2 are shown in Figure 2. Mandal et al (1999) observed that the flame temperature of the gas gradually increases after the second week and then reaches a maximum value at the middle of the retention period, approximately 6 weeks, falling thereafter. This is because the percentage of methane in the biogas varies with the retention period.…”

Section: Resultsmentioning

confidence: 99%

Anaerobic co-digestion of hatchery waste and wastewater to produce energy and biofertilizer - Batch phase

Matter

Costa

et al. 2017

Rev. bras. eng. agríc. ambient.

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A B S T R A C TAiming to evaluate different wastewaters in the anaerobic co-digestion (ACoD) of hatchery wastes, a batch test was conducted in bench horizontal digesters. At the end of the process, the potential production of biogas and methane was calculated as well as the chemical composition (macro-and micronutrients) of the effluent and the concentrations of methane and carbon dioxide gas at 60 days. The monitoring of the process included observations of the reduction of the organic carbon, chemical oxygen demand, and total (TS) and volatile solids (VS), as well as the variation of pH and electrical conductivity (EC). The results showed that the mixing between the hatchery fresh waste and swine wastewater (T 4 ) and among fresh hatchery waste, water from the first anaerobic pond of the hatchery and swine wastewater (T 5 ) represent significant sources of renewable energy and thereby greater potential for biogas production (192.50 and 205.0 L biogas per kg of VS added to T 4 and T 5 , respectively). The average concentration of methane in the biogas varied from 72 to 77% among the treatments. For all treatments, reductions were observed in TS and VS and increases in pH and EC. It was concluded that the energy recovery from hatchery wastes is favoured by the addition of swine wastewater in the ACoD process.Co-digestão anaeróbia de resíduos de incubatório e águas residuárias para produção de energia e biofertilizante -Fase batelada R E S U M O Visando avaliar diferentes águas residuárias na co-digestão anaeróbia de resíduos de incubatório foi realizado ensaio batelada conduzido em biodigestores horizontais de bancada. Ao final do processo foram determinados a produção e os potenciais de produção de biogás e de metano bem como a composição química (macro e micronutrientes) do efluente e a concentração de metano e gás carbônico aos 60 dias. O monitoramento do processo foi acompanhado pela redução de carbono orgânico, demanda química de oxigênio, sólidos totais e voláteis (ST e SV), além da variação do pH e da condutividade elétrica (CE). Os resultados obtidos revelaram que as misturas entre resíduo fresco de incubatório e água residuária de suinocultura -ARS (T 4 ) e resíduo fresco de incubatório + água da primeira lagoa anaeróbia do incubatório + ARS (T 5 ) apresentaram os melhores potenciais de produção de biogás (192,50 e 205,0 L biogás por kg de SV adicionados, respectivamente). Aos 60 dias a concentração média de metano variou de 72 a 77% entre os tratamentos. Para todas as situações avaliadas observou-se redução de ST e SV e aumento do pH e da CE. Concluiu-se que a recuperação de energia dos resíduos de incubatório é favorecida pela adição de ARS em co-digestão anaeróbia. Key words:biogas methane swine wastewater slaughterhouse wastewater Palavras-chave: biogás metano água residuária da suinocultura água residuária de frigorífico

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Section: Resultsmentioning

confidence: 99%

Anaerobic co-digestion of hatchery waste and wastewater to produce energy and biofertilizer - Batch phase

Matter

Costa

et al. 2017

Rev. bras. eng. agríc. ambient.

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“…In anaerobic digestion process, different types of bacteria (like; hydrolytic, acidogenic and methanogenic) can convert biodegradable organic wastes into high calorific fuel gases, likehydrogen, methane, other hydrocarbon gases [1]. Biogas can also be used in running vehicles after it has been cleaned and upgraded [3]. The cleaning is done by separation of water vapour (H 2 O), hydrogen sulphide (H 2 S), ammonia (NH 3 ) and sulphur dioxide (SO 2 ), while upgradation is done by reducing the amount of carbon dioxide (CO 2 ) and carbon monoxide (CO) present in the biogas mixture.…”

Section: Introductionmentioning

confidence: 99%

“…Biogas can also be used in running vehicles after it has been cleaned and upgraded [3]. The cleaning is done by separation of water vapour (H 2 O), hydrogen sulphide (H 2 S), ammonia (NH 3 ) and sulphur dioxide (SO 2 ), while upgradation is done by reducing the amount of carbon dioxide (CO 2 ) and carbon monoxide (CO) present in the biogas mixture. Modern biogas cleaning and upgradation technologies are based on percent improvement of methane and higher hydrocarbons content within the biogas mixture by adopting different techniques like, enzymatic hydrolysis [4], utilization of different types of cattle manures [5], utilization of different feedstock/food waste [1,6], microwave heating [7], metal catalyst use [8] and ultimately utilization of 2 different types of microorganisms [9].…”

Section: Introductionmentioning

confidence: 99%

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Biophotonics for Biofuel Upgradation

Rana¹,

Mandal

2017

Management Systems in Production Engineering

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Abstract:Experimental studies have been made to find out Cyanobacterias' biophotonical response in gaseous-fuelation and carbon dioxide fixation during photo-anaerobic digestion. A new horizontal type photo-bioreactor has been designed by using environment hazard plastic bottles and it works ideally for anoxygenic cyanobacterial growth. Through 'V3-metagenomics' of 16S rRNA gene sequencing by paired-end Illumina MiSeq and downstream analysis by QIIME program, we have identified anaerobic cyanobacteria, represent the orders YS2 and Streptophyta. OTUs have been identified by aligning against Greengenes and Silva databases, separately. The flame temperature of the fuel gas is 860°C and the percent-content of carbon dioxide (CO 2 ) is 17.6%.

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“…However, it can vary widely, depending on the organic waste from which it is produced; the different nutrient composition (protein, fat, carbohydrates) of the substrates is one of the main reasons for the different methane content [38]. AIso the degree of compaction of that material along with its humidity and temperature and pH [39] have an influence, as well as the gas production method used [40][41][42]24,43,26] (controlled degasification of landfills, anaerobic digestion, etc).…”

Section: Introduetionmentioning

confidence: 99%