scholarly journals Evaluation of mango, longan and lychee trees pruning leaves for the production of biogas via anaerobic fermentation

2019 ◽  
Vol 1 (3) ◽  
pp. 20-26
Author(s):  
Yuwalee Unpaprom ◽  
Nuttapong Saetang ◽  
Sawitree Tipnee
Keyword(s):  
Renewable Energy ◽  
Large Scale ◽  
Anaerobic Fermentation ◽  
Biogas Production ◽  
Sodium Hydroxide Solution ◽  
Fruit Trees ◽  
Proximate Analysis ◽  
Fruit Tree ◽  
Short Period ◽  
Mango Leaves

Pruning fruit trees is improving their full health and harvest. Fruit tree pruning leaves waste to represent an abundant amount of organic materials, and these produced during a short period. The basic fuel properties of lignocellulosic biomass from orchards were evaluated on the following fruit tree leaves obtained from pruning operations. Biomass has become a vital source of renewable energy. Biogas is one the renewable energy which can be produced by anaerobic fermentation of biomass. In this study, mango, longan and lychee trees pruning leaves waste was utilized for biogas production. These leaves were examined on proximate analysis and ultimate analysis contents are considered as carbon (C), hydrogen (H), oxygen (O), nitrogen (N) and sulfur (S). In this study, pretreatment was performed using a sodium hydroxide solution (w/v) at different concentrations as above (1, 2, 3, and 4%). For the best feedstock screening, the theoretical biochemical methane potential was confirmed. Mango leaves biomethane content was higher compared to longan and lychee leaves. Finally, this biomass was suggested further large-scale studies. Digestate from biogas system is a highly valuable nutrient and rich fertilizer.

scholarly journals Optimization of biogas yield from lignocellulosic materials with different pretreatment methods: a review

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Kehinde Oladoke Olatunji ◽  
Noor A. Ahmed ◽  
Oyetola Ogunkunle
Keyword(s):  
Renewable Energy ◽  
Energy Demand ◽  
Greenhouse Gas Emission ◽  
Anaerobic Fermentation ◽  
Biogas Production ◽  
Renewable Energy Sources ◽  
High Energy ◽  
Population Increase ◽  
Energy Sources ◽  
Biogas Yield

AbstractPopulation increase and industrialization has resulted in high energy demand and consumptions, and presently, fossil fuels are the major source of staple energy, supplying 80% of the entire consumption. This has contributed immensely to the greenhouse gas emission and leading to global warming, and as a result of this, there is a tremendous urgency to investigate and improve fresh and renewable energy sources worldwide. One of such renewable energy sources is biogas that is generated by anaerobic fermentation that uses different wastes such as agricultural residues, animal manure, and other organic wastes. During anaerobic digestion, hydrolysis of substrates is regarded as the most crucial stage in the process of biogas generation. However, this process is not always efficient because of the domineering stableness of substrates to enzymatic or bacteria assaults, but substrates’ pretreatment before biogas production will enhance biogas production. The principal objective of pretreatments is to ease the accessibility of the enzymes to the lignin, cellulose, and hemicellulose which leads to degradation of the substrates. Hence, the use of pretreatment for catalysis of lignocellulose substrates is beneficial for the production of cost-efficient and eco-friendly process. In this review, we discussed different pretreatment technologies of hydrolysis and their restrictions. The review has shown that different pretreatments have varying effects on lignin, cellulose, and hemicellulose degradation and biogas yield of different substrate and the choice of pretreatment technique will devolve on the intending final products of the process.

scholarly journals Analysis of Potential Biogas Production from a Mixture of Palm Oil Mill Effluent (POME) and Cow Dung

2021 ◽  
Vol 317 ◽  
pp. 04031
Author(s):  
Tiyo Agung Pambudi ◽  
Hadiyanto ◽  
Sri Widodo Agung Suedy
Keyword(s):  
Renewable Energy ◽  
Palm Oil ◽  
Methane Production ◽  
Fermentation Process ◽  
Loading Rate ◽  
Anaerobic Fermentation ◽  
Biogas Production ◽  
Palm Oil Mill Effluent ◽  
Cow Dung ◽  
Palm Oil Mill

POME or palm oil mill effluent is currently still a waste problem that has not been utilized optimally. POME waste has the potential for renewable energy in the form of biogas, but some research results have shown that production is not optimal, so the addition of cow dung needs to be done to increase biogas production because methanogen bacteria found in cow dung help to maximize the anaerobic fermentation process and methane production. This research was conducted to determine the potential for biogas production from a mixture of POME and cow dung for 25 days by conducting a study of the biogas production process. The results of this study indicate that the biogas pressure increases with the addition of the loading rate, which is 101.102 N/m2/day to 101.107 N/m2/day with a daily biogas production of 0, 24247 liters/day with a total accumulation of biogas production for 25 days of 6.1 liters.

scholarly journals Possibilities of Biogas Production from Livestock Waste in Latvia

2021 ◽  
Author(s):  
Janis Millers ◽  
◽  
Irina Pilvere ◽  
Keyword(s):  
Renewable Energy ◽  
Circular Economy ◽  
Anaerobic Fermentation ◽  
Biogas Production ◽  
Renewable Energy Sources ◽  
Agricultural Waste ◽  
Energy Sources ◽  
Forest Protection ◽  
Biogas Plants ◽  
Livestock Farms

With the adoption of the Green Deal in the European Union (EU), the role of biodiversity, basic principles of the circular economy, climate change mitigation, forest protection and renewable energy increased. Since 2007, biogas production in Latvia has increased significantly, as it was possible to receive co-funding from the EU Funds for the construction of biogas plants. In 2021, inputs of agricultural origin are used by 40 biogas plants with an average installed capacity of 1 MW. The emergence of biogas plants on livestock farms is facilitated by the development of a circular economy producing waste from the production process – manure and feed waste. Anaerobic fermentation results in digestate – a nutrient-rich plant fertilizer that reduces the application of chemical fertilizers. Rational use of biogas can reduce the need for fossil fuels. Energy production from biogas should be encouraged, as waste is used efficiently, thereby generating energy and reducing the release of greenhouse gases into the atmosphere. In Latvia, livestock production is one of the key industries of the national economy, which produces manure and feed waste. The present research calculated the amounts of cattle, pig and poultry manure and feed waste in Latvia. The research analysed livestock farms by number of cattle, pigs and poultry, the potential amounts of manure and waste produced and theoretical biogas output. Theoretically, 309 farms analysed can produce 93.5 mln. m3 of biogas from agricultural waste and construct 269 new biogas plants. A policy for supporting the construction of new biogas plants would contribute to the country’s independence from fossil energy sources, as well as increase the proportion of renewable energy sources to 50-70 % in final energy consumption by 2030. Farmers on whose farms a biogas plant could be built need to carefully consider the uses of the biogas produced. The uses could be thermal energy generation for heat supply, cogeneration (thermal and electrical energy) or biomethane production.

scholarly journals Improvement of purification technology of the liquid waste from fermentation production

2021 ◽  
Vol 6 (1) ◽  
pp. 7-14
Author(s):  
Galina Krusir ◽  
◽  
Olga Sagdeeva ◽  
Alfred Tsykalo ◽  
Yuliia Vilhovska ◽  
...  
Keyword(s):  
Waste Disposal ◽  
Food Industry ◽  
Large Scale ◽  
Anaerobic Fermentation ◽  
Biogas Production ◽  
Liquid Waste ◽  
Energy Crisis ◽  
Resource Saving ◽  
Methane Fermentation ◽  
Urgent Task

One of the areas of waste disposal of fermentation industries is anaerobic fermentation and biogas production, which becomes increasingly attractive for researchers not only because of the global energy crisis but also the environmental one. Biogas production is based on methane fermentation fundamentally different from other types of fermentation, which creates certain difficulties in its implementation on a large scale. Therefore, the development of innovative energy and resource-saving technologies for the processing of liquid waste from fermentation industries is an urgent task for the development of the domestic food industry. The aim of the work is to develop, theoretically substantiate and experimentally test the technology of processing liquid waste from fermentation plants.

scholarly journals Small Scale Determinations for Biogas Production Using Anaerobic Fermentation - 2L Batch Scenarios

2020 ◽  
Vol 71 (1) ◽  
pp. 223-227
Author(s):  
Luisa Izabel Dungan ◽  
Adrian Eugen Cioabla ◽  
Vasile Pode
Keyword(s):  
Renewable Energy ◽  
Anaerobic Fermentation ◽  
Biogas Production ◽  
Clean Energy ◽  
Small Scale ◽  
Energy Carriers ◽  
Substrate Mixtures

Nowadays demand for clean energy and new solutions for renewable energy carriers makes it a challenge to find new substrates that can be used for production of biofuels. In this context the present paper aims to present possible solutions of substrate mixtures using materials that exist in abundance at least in the western part of Romania. Conclusions will be traced relative to material potential at small scale in terms of producing biogas.

scholarly journals Conversion of Post-Socialist Agricultural Premises as a Chance for Renewable Energy Production. Photovoltaics or Biogas Plants?

Energies ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 7164
Author(s):  
Josef Navrátil ◽  
Stanislav Martinát ◽  
Tomáš Krejčí ◽  
Petr Klusáček ◽  
Richard J. Hewitt
Keyword(s):  
Renewable Energy ◽  
Power Plants ◽  
Large Scale ◽  
Planning Process ◽  
Biogas Production ◽  
The Public ◽  
Photovoltaic Power ◽  
Biogas Plants ◽  
Agricultural Areas ◽  
Locally Grown

We aim to contribute to in-depth comprehension of the factors and preferences behind the reuses of large-scale underused or abandoned former collective farms from the 1950s–1980s for biogas plants and solar photovoltaic power plants. As a case study, three regions in the southern part of the Czech Republic have been selected. Our findings signal that the residents’ attitudes towards the mentioned energy sources are rather negative. Similarly, farmers’ interest in photovoltaic power plants is low. More interest has been detected in the case of biogas production; this is especially true for large agricultural companies and farmers, who own underused or abandoned premises. Biogas plants are frequently located in agricultural areas with warmer or just slightly colder climates as a consequence of the potential to process locally grown maize. On the other hand, photovoltaic power plants are found on more fertile plains with high levels of insolation, but, surprisingly, also in mountain regions which typically have low emissions. Both renewable energy solutions were found to be problematic as there is strong opposition to both types of installations among local inhabitants. This indicates the need for “soft” forms of planning. Stakeholder engagement and inclusive participation in all phases of the planning process are essential requirements for arriving at the best possible outcomes for the new renewable energy solutions and their acceptance by the public.

Result of plum growth development of different plum varieties in Altai region

2014 ◽  
Vol 11 (2) ◽  
pp. 83-86
Author(s):  
N Saikhantsetseg ◽  
B Ninj
Keyword(s):  
Fruit Trees ◽  
Fruit Tree ◽  
Home Garden ◽  
Primary Reason ◽  
State University ◽  
Altai Region ◽  
Experimental Station ◽  
Short Period ◽  
Growth Development ◽  
Plum Varieties

Due to global warming and Mongolian climate change air temperature has increased by 1, 56 degree in last 60 years. 25 percent of desertification covers once in 2-3 years whereas more than 50 percent of desertification occurs once in 4-5 years in Mongolian territory. Dust storm increased 3-4 times in Gobi and step regions in comparison to 1960s (Desertification UB 2009).Studying perennial trees, bushes and fruit tree cultivation, its adaptability and yield increasement is a stable way to reduce desertification, restore land degradation, increase yield and improve soil fertility. Plum is easily adaptable plant to cultivate in any type of soil and climate of Mongolia.Plum specificities are highly adaptable, yields in short period after planting, tolerant during winter, disease infected condition is comparably low, later uses of plum fruits are diverse and economically valuable.Plum is also planted for medicinal and ornamental use. Increasing interests and demand on making home garden and to plant diverse of fruit trees are primary reason to conduct this study. Experiment was done in Khovd branch of Agricultural State University in fruit experimental station. DOI: http://dx.doi.org/10.5564/mjas.v11i2.224 Mongolian Journal of Agricultural Sciences Vol.11(2) 2013 pp.83-86

Some comments about observations and image processing of comet 29P/Schwassmann-Wachmann 1

1999 ◽  
Vol 173 ◽  
pp. 243-248
Author(s):  
D. Kubáček ◽  
A. Galád ◽  
A. Pravda
Keyword(s):  
Image Processing ◽  
Large Scale ◽  
Harvard College ◽  
Oak Ridge ◽  
Large Scale Structures ◽  
Short Period Comet ◽  
Short Period ◽  
Scale Structures ◽  
Harvard College Observatory ◽  
Period Comet

AbstractUnusual short-period comet 29P/Schwassmann-Wachmann 1 inspired many observers to explain its unpredictable outbursts. In this paper large scale structures and features from the inner part of the coma in time periods around outbursts are studied. CCD images were taken at Whipple Observatory, Mt. Hopkins, in 1989 and at Astronomical Observatory, Modra, from 1995 to 1998. Photographic plates of the comet were taken at Harvard College Observatory, Oak Ridge, from 1974 to 1982. The latter were digitized at first to apply the same techniques of image processing for optimizing the visibility of features in the coma during outbursts. Outbursts and coma structures show various shapes.

Peculiarities of the phytosanitary state of pome fruits in industrial horticulture

2020 ◽  
Vol 60 (1) ◽  
pp. 159-168
Author(s):  
V. V. Antonenko ◽  
A. V. Zubkov ◽  
S. N. Kruchina
Keyword(s):  
Mechanism Of Action ◽  
Large Scale ◽  
High Efficiency ◽  
Fruit Trees ◽  
Fruit Crops ◽  
Planting Material ◽  
Relative Safety ◽  
Pome Fruits ◽  
Weed Plants ◽  
Spread Of Infection

Data were obtained on the basis of the results of research carried out on the territory of the educational and experimental farm of the Timiryazev State Agrarian University, in Moscow during 2018-2019. As a result of the surveys, the most dangerous diseases and pests of pome crops on the territory of this farm were established. The most resistant apple and pear varieties to major diseases have been identified. Peculiarities of development of alternariosis on pear are described, the harmfulness of the disease on pear and apple seedlings is noted. A possible role in the transfer of alternariosis infection from garden-protective plantations and weed vegetation to fruit trees was noted. A possible role has been established in the transport of septoriosis, powdery dew infection from dicotyledonous weeds plants. The peculiarities of the spread of infection under the influence of wind direction are noted. The results and peculiarities of the application of various methods of scaring birds in the orchard are presented. As a result of route surveys the most harmful weed plants have been identified. The possibility of using herbicides of different mechanism of action in fruit gardens for weed control has been studied. High efficiency and relative safety of application of herbicides of contact action in nursery fields, operational orchards and for control of piglets on fruit trees are shown. Recommendations are given for the use of soil and systemic herbicides of soil in seedlings beds, the first and second fields of the nursery, as well as in the process of production of large-scale planting material and operational orchards of fruit crops. The safety of the herbicides in question is established when used in accordance with the recommended methods of use.

Sign in / Sign up

Export Citation Format

Share Document