The Efficiency Analysis of Eupatorium adenophorum Spreng for Methane Production
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Eupatorium adenophorum Spreng can potentially be utilized in several bioenergy pathways. When pretreated with microbial inoculum, it can be used as biogas fermentation material, which could increase the biogas production velocity. Eupatorium adenophorum Spreng is a promising potential biogas feedstock, whose rate of gas generation is 180 (m3-t_1TS) and fuel conversion efficiency is 12.37% at 30°C. When co-fermentated for hydrogen and methane production, it can increase the material degradation velocity and energy utilization efficiency, and decrease the fermentation reaction period.Keywords:
Biogas
Eupatorium
Biogas Production
Degradation
Abstract This article is a review of the scientific literature published in 2019 on topics relating to bioenergy from biofuel residues and waste. This literature review is divided into the following sections: Feedstocks, Biodiesel, Bioethanol, Hydrogen, Biohydrogen, Biofuel Residues, Microalgae, and Lignocelluloses.
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The text is based on the household biogas digesters,in cow dung for anaerobic fermentation on middle temperature.It is showed that continue warming up the highest temperature could up to 45℃,when temperature up to 35℃,the temperature keep 30℃ all the time;household biogas digesters produce biogas in 42 days,the whole measured biogas production was 8.7 m3,the average measured biogas production was 0.26 m3·d-1,the highest biogas production was 0.5 m3·d-1;after 30 days the biogas production begin reducing,it's to say,the organic content could be used in the material was reduced,if keeping the biogas production,you must supply the cow dung before 30 days.
Biogas
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Cow dung
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Biogas
Biogas Production
Cow dung
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Over the past two decades the topical issue for the European Union countries as well as the rest of the word is usage of biomass for energy and biogas production. Dry fermentation is a new introduction in Latvia. The goal of the investigation was to identify how suitable the garage-type bioreactor and production technology for biogas production from MSW (municipal solid wastes) is and to identify the biogas obtaining potential. Biogas output was investigated at 37-38 oC. The garage-type bioreactor and production technology is suitable for biogas production using MSW. The fermentation process was measured on pH 7.21-7.99 levels. The obtained biogas value of 1 ton waste in 4 weeks: Investigation A - average 23.21 Nm 3 biogas, Investigation B - average 34.23 Nm 3 biogas, Investigation C - average 40.89 Nm 3 biogas.
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Biogas has the potential to be one of the cheapest technologies for decarbonising Australia's gas networks. However, despite biogas being a mature technology in some countries, its production in Australia is limited to only a few hundred plants. If biogas production is to grow to play a role in Australia's future energy system, understanding Australian public perceptions regarding biogas can help to inform the development of suitable policy measures. Through an Australian national survey, we found that lower levels of awareness of biogas were linked to lower social acceptance. After providing some simple information (a definition, a diagram and/or one of three simple messages), we were able to show a change in support for biogas in Australia. The results showed how information provision increased support for biogas from between 5% and 10% compared to the baseline and highlighted the importance of awareness in fostering support for biogas as an Australian decarbonisation mechanism.
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Social Acceptance
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【Objective】Temperature is one of the main factors influencing fermentation period length and biogas production efficiency.It′s study could increase the biogas production efficiency.【Method】Experiment was conducted to investigate the effects at the temperature of 25,30,35 and 40 ℃ and selected 1∶1 mixture of Chicken feces and crop(rice,wheat and corn)straw as fermented material.Multiple regression analysis of the data was conducted and regression equations were established using SAS software.Results showed that the three kinds of mixed materials can all produce biogas normally at 4 temperature grades.【Result】The worst biogas-producing efficiency was under 25 ℃(the max daily biogas production of the three kinds of mixtures was 1.22,1.42 and 2.01 L/d,the cumulative biogas production 40.6,35.6 and 34.1 L),while the best biogas-producing efficiency was under 40 ℃(the max daily biogas production of the three kinds of mixtures was 2.45,2.49 and 2.63 L/d,the cumulative biogas production 41.9,41.9 and 44.6 L).The day attaining max biogas production for the three kinds of mixtures was from 5th to 14th.The days of percentage of cumulative biogas production above 90% were all from 37 to 48 d.【Conclusion】The maximum daily biogas production increased as the temperature grew.The higher the temperature,the earlier the day attaining maximum daily biogas production appeared.The overall length of the fermentation period was not shortened as temperature increased within a certain range.In addition,cumulative biogas production was not increased as temperature increased.Therefore,rational control of temperature and fermentation period might increase biogas-producing efficiency.
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Crop Residue
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In the study of the environmental effect of biogas production, it is essential to identify the main constituents of the biogas with a special interest biogas process system. This paper reviews the formation processes of biogas production. In this paper, the roles of biogas application were discussed to make them more suitable to the environment and human activities. Furthermore, questions related to the disposal and management of wastes which leads to serious environmental and global concerns were addressed. Although these wastes offer abundant resources: large proportions of the wastes are biodegradable materials and can be efficiently used in producing biogas, which can serve as an answer to the greenhouse gas problem but also inappropriate controlling of the wastes will lead to the rise of greenhouse gas in the environment.
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[Objective] The research aimed to study the feasibility of biogas production using hami melon in a resource utilization way.[Method]Using hami melon as raw materials,the fermentation experiments were carried out at 30 ℃. Parameters of TS biogas production potential,VS biogas production potential,daily biogas output,biogas production rate and pH etc. were determined during experiments.[Result]The results showed that the total biogas production output of hami melon during fermentation experiment was 3 575 ml,TS biogas production potential was 782 ml /g( TS),VS biogas production potential was 874 ml /g( VS). Before and after the experiment,pH changed slightly,remaining within the suitable scope for fermentation. [Conclusion]This study proved that hami melon had good biogas production potential and could be used as raw materials for biogas production.
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Melon
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Variation of biogas production,methane content and the digester temperature were determined for six kinds of household biogas digesters in Guangxi province.These main parameter changes and their correlations were discussed,and the advantages and disadvantages of various digester types were compared,so that to provide the reference for digester improving and biogas application.
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