Tag Archives: production

xxx A. Kubule, Z. Indzere and I. Muizniece
Modelling of the bioeconomy system using interpretive structural modelling
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Modelling of the bioeconomy system using interpretive structural modelling

A. Kubule*, Z. Indzere and I. Muizniece

Riga Technical University, Institute of Energy Systems and Environment, Azenes iela 12/1, LV-1048 Riga, Latvia
*Correspondence: anna.kubule@rtu.lv

Abstract:

Due to European and global resource efficiency efforts, the bioeconomy research and the search for new bioresource valorisation alternatives has become topical. Bioeconomy directly concerns such major sectors of the economy as agriculture, forestry, fishery, as well as other indirect bioeconomy sectors. However, the practical implementation of bioeconomy has had quite low implementation rate, which is partly caused by the multitude and variety of factors that affect the bioeconomy system. This paper evaluates seven bioeconomy affecting factors (particularly related to biotechonomy concept) and links between them in order to promote successful implementation of bioeconomy. To evaluate these factors interpretive structural modelling method (ISM) is used. The application of ISM method allows to not only identify the factor interaction links, but also to graphically represent their directed structure. The results show that three out of seven factors have the strongest interrelation, namely, climate change, bioresources and technologies. This research can be complimented by further adding other factors that could be influencing for bioeconomy development, for example, financial resources, human health, well-being, and so on; therefore, to reach better understanding about influential factors and bioeconomy dependency on them; also, system dynamics approach could be used in order to fully uncover the factor interaction links.

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1921-1930 G.A. Bich, M.L. Castrillo, L.L. Villalba and P.D. Zapata
Evaluation of rice by-products, incubation time, and photoperiod for solid state mass multiplication of the biocontrol agents Beauveria bassiana and Metarhizium anisopliae
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Evaluation of rice by-products, incubation time, and photoperiod for solid state mass multiplication of the biocontrol agents Beauveria bassiana and Metarhizium anisopliae

G.A. Bich¹²*, M.L. Castrillo¹², L.L. Villalba¹ and P.D. Zapata¹²

¹University of Misiones, Institute of Biotechnology Misiones, Laboratory of Molecular Biotechnology, Route 12 km 7.5. Posadas, Misiones, Argentina
²National Scientific and Technical Research Council of Argentina (CONICET)
*Correspondence: gustavobich@gmail.com

Abstract:

The success of biological control of insect pests depends not only on the isolation, characterization, and pathogenicity, but also on the success of the mass production of the microbial agents. The biological control strategy using entomopathogenic fungi like B. bassiana and M. anisopliae can only be useful if practical and economic methods of mass multiplication are available. Rice by-products like broken rice grains, rice hulls and their combination was evaluated for solid state multiplication of B. bassiana and M. anisopliae. The influence of photoperiod and incubation time in the production of conidia was also evaluated. This study showed that, broken rice was the most productive substrate for conidial production of both fungal genera, with a yield of 4.62 x 107 and 2.22 x 106 conidia g-1 respectively. Also, under the evaluated solid state multiplication conditions, the best conidia production was achieved with a photoperiod of 24 h of light for B. bassiana (with 4.43 x 107 conidia g-1) and M. anisopliae (with 1.35 x 106 conidia g-1). The results here demonstrated that these two fungal species could viably be multiplied with good yields of conidia on agro-industrial by-products using solid-state culture and regulating some culture conditions.

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67–74 N. Kamińska, M. Gaworski, P. Kaźmierska and A.M. Klepacka
Pilot study of variability on demand and knowledge concerning organic food on an example of two Polish regions
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Pilot study of variability on demand and knowledge concerning organic food on an example of two Polish regions

N. Kamińska*, M. Gaworski, P. Kaźmierska and A.M. Klepacka

Department of Production Management and Engineering, Warsaw University of Life
Sciences, Nowoursynowska str. 164, PL 02-878 Warsaw, Poland
*Correspondence: natalia.kaminska@poczta.onet.pl

Abstract:

The paper focuses on showing variability of knowledge and demand for organic food in two regions of Poland, i.e. Świętokrzyskie and Mazovian provinces. The selected for detailed investigations Polish regions differed in society wealth. Mazovia province with capitol (Warsaw) is reach as opposed to Świętokrzyskie – mountain province with dominance of more difficult conditions for comfort and affluent life. Basing on questionnaire the group of respondents’ attitude towards organic food was recognized and compared. The problems included in the questionnaire there were factors influencing the organic food buying, factors which influence about the resignation of organic food buying, the availability of information about organic food, availability of organic food in selected regions, requirements for organic food, most frequently purchased organic products, place where consumers buy organic food, consumption frequency of organic food, factors influencing the choice of organic food. The comparison of two provinces indicated differences within the meaning of organic food as well as autonomy in consumer behaviour. Polish society is characterized by a growing interest in organic food. The production industrialization and mass food processing causes people to look for some alternatives. Organic farming gives people that chance. In the conclusions, we have formulated a term mean that due to the consumption of organic products – ‘we are what we eat’.

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511-519 K. Kļaviņa, K. Kārkliņa and D. Blumberga
Charcoal production environmental performance
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Charcoal production environmental performance

K. Kļaviņa*, K. Kārkliņa and D. Blumberga

Riga Technical University, Faculty of Power and Electrical Engineering, Institute of Energy Systems and Environment, Āzenes st. 12/1-616, LV1048 Riga, Latvia; *Correspondence: krista.klavina@rtu.lv

Abstract:

Charcoal is a well-known material obtained through thermal conversion of different types of biomass in an anoxic environment. The greatest share of the overall charcoal amount is produced in inefficient batch pyrolysis chambers. Thus contribution in an in-depth charcoal production process research for process optimization is of great importance. In this study an industrial experiment of charcoal production in a continuous up-to-date retort is performed. The selected industrial object has a high level of automation and process control. The retort is connected to a continuous monitoring system that records and stores the process parameter values. Apart from the process control parameter measurements attention has to be paid to the charcoal production plant pollution as this industry often gets contradictory attention towards its environmental performance. The air pollution is evaluated by air quality measurements at the production facility site. The obtained experimental results from an industrial facility with a state-of-the-art technology give an opportunity to evaluate the potential of the charcoal industry to be a sustainable player in the renewable energy market.

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511-519 K. Kļaviņa, K. Kārkliņa and D. Blumberga
Charcoal production environmental performance
Abstract |
Full text PDF (344 KB)

Charcoal production environmental performance

K. Kļaviņa*, K. Kārkliņa and D. Blumberga

Riga Technical University, Faculty of Power and Electrical Engineering, Institute of Energy Systems and Environment, Āzenes st. 12/1-616, LV1048 Riga, Latvia; *Correspondence: krista.klavina@rtu.lv

Abstract:

Charcoal is a well-known material obtained through thermal conversion of different types of biomass in an anoxic environment. The greatest share of the overall charcoal amount is produced in inefficient batch pyrolysis chambers. Thus contribution in an in-depth charcoal production process research for process optimization is of great importance. In this study an industrial experiment of charcoal production in a continuous up-to-date retort is performed. The selected industrial object has a high level of automation and process control. The retort is connected to a continuous monitoring system that records and stores the process parameter values. Apart from the process control parameter measurements attention has to be paid to the charcoal production plant pollution as this industry often gets contradictory attention towards its environmental performance. The air pollution is evaluated by air quality measurements at the production facility site. The obtained experimental results from an industrial facility with a state-of-the-art technology give an opportunity to evaluate the potential of the charcoal industry to be a sustainable player in the renewable energy market.

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