The Emissions of a Compression-Ignition Engine Fuelled by a Mixture of Crude Oil and Biodiesel from the Lipids Accumulated in the Waste Glycerol-Fed Culture of Schizochytrium sp. DOI Creative Commons
Marcin Zieliński, Marcin Dębowski, Joanna Kazimierowicz

et al.

Energies, Journal Year: 2024, Volume and Issue: 17(20), P. 5193 - 5193

Published: Oct. 18, 2024

Microalgae are considered to be a promising and prospective source of lipids for the production biocomponents conventional liquid fuels. The available sources contain lot information about cultivation biomass amounts composition resulting bio-oils. However, there is lack reliable verified data on impact fuel blends based microalgae biodiesel quality emitted exhaust gas. Therefore, main objective study was present emission characteristics compression-ignition engine fuelled with blend diesel produced from accumulated in heterotrophic culture Schizochytrium sp. final concentrations microalgal were 140.7 ± 13.9 g/L 58.2 1.1 g/L, respectively. fatty acids lipid fraction dominated by decosahexaenoic acid (43.8 2.8%) palmitic (40.4 2.8%). All parameters bio-oil met requirements EN 14214 standard. It found that use bio-components allowed lower hydrocarbons gas, ranging between 33 2 ppm 38 7 ppm, depending load level engine. For smoke opacity, emissions range 50–100% levels, where observed content 23 4% 53 8%.

Language: Английский

Investigation of self-regulation mechanisms of extracellular organic matters in reused medium on Spirulina platensis DOI
Zihan Li, Yuhuan Liu,

Yunpu Wang

et al.

Bioresource Technology, Journal Year: 2025, Volume and Issue: unknown, P. 132385 - 132385

Published: March 1, 2025

Language: Английский

Citations

0
The growth and nutrient removal properties of a newly isolated Desmodesmus sp. XNY-2104 under mixotrophic and heterotrophic conditions using volatile fatty acids (VFAs) DOI
Jie Li, Na Liu,

Wenbao Yan

et al.

Biomass and Bioenergy, Journal Year: 2025, Volume and Issue: 199, P. 107918 - 107918

Published: May 1, 2025

Language: Английский

Citations

0
Enhancing the environmental and economic sustainability of heterotrophic microalgae cultivation: Kinetic modelling and screening of alternative carbon sources DOI Creative Commons
S. Rossi, D. Carecci,

Lorenzo Proietti

et al.

Chemical Engineering Journal Advances, Journal Year: 2024, Volume and Issue: 19, P. 100632 - 100632

Published: July 26, 2024

Heterotrophic microalgae cultivation has been suggested to reduce conventional photo-autotrophic microalgal biomass production costs. In heterotrophic cultivation, the most relevant operational costs are constituted by supply of pure substrates used as carbon source (e.g., glucose), and high energy request for culture aeration. addition, suboptimal conditions temperature pH algal productivity, further increasing this work, an attempt was made define more sustainable cost-effective strategies Chlorellaceae Scenedesmaceae. Several by-products from a local confectionery industry were thus screened alternative sources. Manufacturing residues peppermint liquorice candies allowed achieve comparable maximum growth rates (1.44 d-1), yields (0.33 g COD·g COD-1) productivities (370 mg COD·L-1·d-1) those achieved using glucose. A preliminary economic evaluation showed that could be lowered up 85.6% substituting glucose with selected industrial by-products. As fermentation conditions, maintained at relatively low dissolved oxygen (DO) concentrations, in large range values. optimal temperatures (37.0 – 37.2°C), values (6.8 7.4), DO concentrations (> 0.5 1 O2·L-1) identified. On overall, study demonstrated possibility achieving reduction while implementing circular economy principles framework resource recovery during bioremediation organic waste.

Language: Английский

Citations

3
Investigation of high-rate algal ponds for the treatment of domestic sewage with low carbon-to-nitrogen ratio DOI Creative Commons
Yan Zhao, Dong Ma,

Weili Sun

et al.

Chemical Engineering Journal Advances, Journal Year: 2024, Volume and Issue: 19, P. 100635 - 100635

Published: Aug. 1, 2024

Sewage with a low carbon-to-nitrogen (C/N) ratio can be effectively treated using high-rate algal ponds (HRAPs), consisting of combined symbiotic system algae and bacteria. However, HRAPs have been predominantly used in laboratories, but their application wastewater treatment plants is yet to realized. Herein, laboratory pilot-scale experimental studies were conducted wetland effluent from the Baitabao estuary ecological plant Liaozhong County. The ammonia nitrogen (NH4+–N) chemical oxygen demand (COD) concentrations lab-scale decreased <4 <45 mg L−1, respectively while those test reduced 1.51 9.15 respectively. primary bacteria Pseudomonas sp., Massilia Kocuria Bacillus cereus group, Exiguobacterium acetylicum dominant Chlorella. Results confirm that treat domestic sewage low-C/N ratios meeting China's Pollutant Emission Urban Treatment Plants (GB 18918-2002) Level 1A standard. Studies on growth degradation kinetics reported (1) specific proliferation rate algal–bacterial mixed stemmed joint action single Chlorella, (2) there was no mutual inhibition between Chlorella system, (3) responsible for greater proportion COD removal, (4) removed NH4+–N primarily via adsorption, absorption, transformation. This study demonstrates promising potential practical implementation.

Language: Английский

Citations

0
The Emissions of a Compression-Ignition Engine Fuelled by a Mixture of Crude Oil and Biodiesel from the Lipids Accumulated in the Waste Glycerol-Fed Culture of Schizochytrium sp. DOI Creative Commons
Marcin Zieliński, Marcin Dębowski, Joanna Kazimierowicz

et al.

Energies, Journal Year: 2024, Volume and Issue: 17(20), P. 5193 - 5193

Published: Oct. 18, 2024

Microalgae are considered to be a promising and prospective source of lipids for the production biocomponents conventional liquid fuels. The available sources contain lot information about cultivation biomass amounts composition resulting bio-oils. However, there is lack reliable verified data on impact fuel blends based microalgae biodiesel quality emitted exhaust gas. Therefore, main objective study was present emission characteristics compression-ignition engine fuelled with blend diesel produced from accumulated in heterotrophic culture Schizochytrium sp. final concentrations microalgal were 140.7 ± 13.9 g/L 58.2 1.1 g/L, respectively. fatty acids lipid fraction dominated by decosahexaenoic acid (43.8 2.8%) palmitic (40.4 2.8%). All parameters bio-oil met requirements EN 14214 standard. It found that use bio-components allowed lower hydrocarbons gas, ranging between 33 2 ppm 38 7 ppm, depending load level engine. For smoke opacity, emissions range 50–100% levels, where observed content 23 4% 53 8%.

Language: Английский

Citations

0