Sustainable Production of Bioenergy

Taufiq-Yap, Yun Hin; Farabi, M.S. Ahmad; Syazwani, Osman Nur; Lokman, Ibrahim M.; Marliza, Tengku Sharifah

doi:10.1007/978-981-13-9012-8_24

Cited by 7 publications

(3 citation statements)

References 28 publications

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“…Crude glycerol is generated during industrial scale biodiesel production by acid or alkali catalyzed transesterification of triglycerides. These include vegetable oil, animal fats and waste cooking oils [4,5]. The annual production within the countries of European Union was 12 million tons in 2017 [6].…”

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confidence: 99%

Use of Biofuel Industry Wastes as Alternative Nutrient Sources for DHA-Yielding Schizochytrium limacinum Production

et al. 2020

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The simultaneous use of crude glycerol and effluent from anaerobic digestate, both wastes derived from the biofuel industry, were tested in the frame of circular economy concept, as potential low-cost nutrient sources for the cultivation of rich in docosahexaenoic acid (DHA) oil microalgae strain Schizochytrium limacinum SR21. Initially, the optimal carbon and nitrogen concentration levels for high S. limacinum biomass and lipids production were determined, in a culture media containing conventional, high cost, organic nitrogen sources (yeast extract and peptone), micronutrients and crude glycerol at varying concentrations. Then, the effect of a culture media composed of crude glycerol (as carbon source) and effluent digestate at varying proportions on biomass productivity, lipid accumulation, proximate composition, carbon assimilation and fatty acid content were determined. It was shown that the biomass and total lipid content increased considerably with varying effluent concentrations reaching 49.2 g L−1 at 48% (v/v) of effluent concentration, while the lipid yield at the same effluent concentration reached 10.15 g L−1, compared to 17.0 g L−1 dry biomass and 10.2 g L−1 lipid yield when yeast extract and peptone medium with micronutrients was used. Compared to the control treatment, the above production was obtained with 48% less inorganic salts, which are needed for the preparation of the artificial sea water. It was shown that Schizochytrium limacinum SR21 was able to remediate 40% of the total organic carbon content of the biofuel wastes, while DHA productivity remained at low levels with saturated fatty acids comprising the main fraction of total fatty acid content. The results of the present study suggest that the simultaneous use of two waste streams from the biofuel industry can serve as potential nutrient sources for the growth of Schizochytrium limacinum SR21, replacing the high cost organic nutrients and up to one half the required artificial sea water salts, but upregulation of DHA productivity through optimization of the abiotic environment is necessary for industrial application, including aqua feed production.

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confidence: 99%

Use of Biofuel Industry Wastes as Alternative Nutrient Sources for DHA-Yielding Schizochytrium limacinum Production

et al. 2020

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“…Another challenge is the availability of feedstock which depends on various factors, including the geographical conditions of the region and the nature of the oil resources. In general, biodiesel is divided into five types based on feedstock that are introduced and discussed in Table 2 [8][9][10][16][17][18][19][20]. Currently, more than 95% of biodiesel production in the world is based on 1st generation feedstocks that are commonly used in rich countries in terms of agricultural land and water resources.…”

Section: Biodiesel: Feedstocks and Production Methodsmentioning

confidence: 99%

Biodiesel production from slaughter wastes of broiler chicken: a potential survey in Iran

et al. 2021

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Biodiesel is a kind of biofuels that can be mixed with diesel and used as fuel. Selecting cheap and available feedstock is a prominent step in producing biodiesel economically. This paper presents the pros and cons of biodiesel and its production methods. The diesel demand is significantly high in Iran, especially in the transportation sector; On the other hand, the amount of produced waste is significant in chicken slaughterhouses. Considering this type of feedstock as a source to produce biodiesel not only can reduce the associated environmental problems, but also can supply some of the diesel needs. Hence, this paper also estimates biodiesel production potential from poultry slaughter waste and its cost. Based on the results, 736 kilotonnes of poultry slaughter waste is produced annually in Iran, which can be used as feedstock to produce 112 million liters of biodiesel by transesterification process with the production cost of around 14,277 rial/liter; i.e. 30% of diesel demand in the transportation sector can be supplied by B2 (98% diesel and 2% biodiesel) or diesel demand growth in this sector converted to B20 to increase economical and environmental sustainability.

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“…Reducing impacts of diesel engines on the environment and human health as well as dependence on traditional fossil fuels is primarily connected with the research in the field of development of biodiesels [2] and renewable and clean types of fuel. In our opinion, the most perspective promising directions of designing new types of diesel engines are the directions of development of biodiesels with alternative fuel technologies, for example, diesel mixtures containing rapeseed oil [3].…”

Section: Introductionmentioning

confidence: 99%

Method for measuring locomotive diesels characteristics for environmental monitoring tasks

2019

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A method for measuring diesel engines characteristics based on recording the irregularities of time parameters of the crankshaft rotation is proposed. We demonstrate that the change of diesel engines characteristics significantly affects the established norms and limit values of engine emissions of pollutants and harmful substances. The ways of improving the environmental characteristics of diesel engines, including change of fuel composition by adding mixtures are considered. A method of control of the diesel engine parameters consisting in measuring the instantaneous values of the speed of the crankshaft rotation and assessing the deviations of these parameters from normal values has been proposed. The method is implemented in the form of procedures including data collection from sensors installed on the engine, data filtering, and their characteristic analysis. An autonomous measuring device based on the microcontroller has been developed with the help of which data has been collected from the sensors of the 16-cylinder turbocharged engine. We have carried out experiments on process data that determine possibly faulty engine elements that worsen its environmental parameters.

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Sustainable Production of Bioenergy

Cited by 7 publications

References 28 publications

Use of Biofuel Industry Wastes as Alternative Nutrient Sources for DHA-Yielding Schizochytrium limacinum Production

Use of Biofuel Industry Wastes as Alternative Nutrient Sources for DHA-Yielding Schizochytrium limacinum Production

Biodiesel production from slaughter wastes of broiler chicken: a potential survey in Iran

Method for measuring locomotive diesels characteristics for environmental monitoring tasks

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