Correlations between biochemical composition and biogas production during anaerobic digestion of microalgae and cyanobacteria isolated from different sources of Turkey

Perendeci, Nuriye Altınay; Yılmaz, Vedat; Taştan, Burcu Ertıt; Gökgöl, Sezen; Fardinpoor, Mona; Namlı, Ayten; Steyer, Jean-Philippe

doi:10.1016/j.biortech.2019.02.086

Cited by 33 publications

(11 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Batch BMP tests were carried out with the mixture of raw or pretreated AWs and SS at mixing ratios of 100:0, 80:20, 60:40, 50:50, 40:60, 20:80 and 0:100 based on the VS content of the wastes. Methane production was measured by the batch BMP tests under mesophilic (35 °C) conditions following the procedures established by Perendeci et al [ 54 ]. Raw or pretreated AWs and SS were placed into a 500 mL BMP reactor with anaerobic seed sludge from a sugar beet factory digester of the anaerobic wastewater treatment plant (Eregli, Turkey).…”

Section: Methodsmentioning

confidence: 99%

Pretreatment, Anaerobic Codigestion, or Both? Which Is More Suitable for the Enhancement of Methane Production from Agricultural Waste?

et al. 2021

View full text Add to dashboard Cite

Pretreatment and codigestion are proven to be effective strategies for the enhancement of the anaerobic digestion of lignocellulosic residues. The purpose of this study is to evaluate the effects of pretreatment and codigestion on methane production and the hydrolysis rate in the anaerobic digestion of agricultural wastes (AWs). Thermal and different thermochemical pretreatments were applied on AWs. Sewage sludge (SS) was selected as a cosubstrate. Biochemical methane potential tests were performed by mixing SS with raw and pretreated AWs at different mixing ratios. Hydrolysis rates were estimated by the best fit obtained with the first-order kinetic model. As a result of the experimental and kinetic studies, the best strategy was determined to be thermochemical pretreatment with sodium hydroxide (NaOH). This strategy resulted in a maximum enhancement in the anaerobic digestion of AWs, a 56% increase in methane production, an 81.90% increase in the hydrolysis rate and a 79.63% decrease in the technical digestion time compared to raw AWs. On the other hand, anaerobic codigestion (AcoD) with SS was determined to be ineffective when it came to the enhancement of methane production and the hydrolysis rate. The most suitable mixing ratio was determined to be 80:20 (Aws/SS) for the AcoD of the studied AWs with SS in order to obtain the highest possible methane production without any antagonistic effect.

show abstract

Section: Methodsmentioning

confidence: 99%

Pretreatment, Anaerobic Codigestion, or Both? Which Is More Suitable for the Enhancement of Methane Production from Agricultural Waste?

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The cyanobacterial biomass was isolated from a thermal spring in the city of Denizli, located in the southwest of Turkey. The isolate was identified as D. tharense using 16S rRNA amplification using RT-PCR, DNA sequencing, and blast method using NCBI online blast engine described in the study of Perendeci et al [21].…”

Section: Biomass Production: Culture Conditions and Culture-specific Parametersmentioning

confidence: 99%

“…The dry weight and chlorophyll content of D. tharense were measured as identified by Taştan et al [22], in duplicates (n = 2). The specific growth rate, maximum productivity (P max ), and CO 2 fixation rate (F) were calculated according to Perendeci et al [21].…”

Section: Biomass Production: Culture Conditions and Culture-specific Parametersmentioning

confidence: 99%

See 1 more Smart Citation

Effects of Hydrodynamic Cavitation-Assisted NaOH Pretreatment on Biofuel Production from Cyanobacteria: Promising Approach

et al. 2021

View full text Add to dashboard Cite

Eukaryotic microalgae and prokaryotic cyanobacteria can grow in various water and wastewater types, and both can grow biomass by taking nutrients and converting atmospheric CO 2 into useful products. Biofuels obtained by processing this landless grown biomass are defined as "third-generation biofuels". In this study, the effects of hydrodynamic cavitation (HC)-assisted NaOH pretreatment on methane production from cyanobacteria were investigated. Cyanobacterial biomass was isolated from thermal springs located in the southwest of Turkey (Denizli-Turkey) and identified as Desertifilum tharense. Desertifilum tharense biomass was grown on a laboratory scale, and along with its compositional characteristics, culturespecific parameters were determined. HC-assisted NaOH pretreatment was applied to evaluate optimum process conditions for enhancing methane production from D. tharense. In the experimental design, process parameters of cavitation number (Cv: 0.3-0.7), NaOH concentration (0-4%), solid content (1.5%), reaction time (4h), and reaction temperature (30°C) were combined to reveal the parameter-specific impact of HC pretreatment. The effect of the HC-assisted NaOH pretreatment was further investigated with molecular-bond and surface structure characterization. Along with the energy equivalent of obtained biofuel, energy requirements for cultivation, harvesting, pretreatment, and anaerobic digestion (AD) were calculated to determine the process's overall energy efficiency. Kinetic parameters of raw and pretreated D. tharense were determined by first-order, cone, modified Gompertz, and reaction curve models. The results revealed that by the application of pretreatment, a 2-35.3% soluble COD increase was achieved, whereas methane production was increased from 241.5 to 290.6 mLCH 4 gVS −1 . Application of HC with a low Cv of 0.3 boosted methane production up to 20.3% compared to the raw D. tharense.

show abstract

“…While the whole biomass had more concentration of lipids, the lipid-extracted biomass had a higher concentration of the remaining biomass which could have a significant calorific value. Although lipids has been described as the most efficient compounds for methane production in comparison to carbohydrates and proteins , the methane potential is also determined by the biochemical composition and the structural organization of the biopolymers in the substrate (Bayard et al, 2016, Perendeci et al, 2019. There are bigger differences in methane production between batches than between whole and lipid-extracted biomass, which indicates a higher variation of chemical composition between batches than just by removing part of the lipids.…”

mentioning

confidence: 99%

Development of a closed loop microalgal oil production system through anaerobic digestion and nutrient recycling

Gonzalez¹

View full text Add to dashboard Cite

The world needs new energy sources that give adequate yields at low economic and environmental costs. Biofuels such as biodiesel and biogas are viable options to offset usage of traditional fossil fuels and reduce environmental damage. In this context, microalgae are promising organisms for biodiesel production due to their capacity to accumulate significant amounts of lipids. Additionally, anaerobic digestion is becoming an efficient and widely utilized system for the generation of renewable biogas; and microalgae are a suitable substrate for such purpose. To date, research on microalgal biofuels has been performed mainly at a pilot-scale due to economic considerations and, in some cases, negative energy balances of the processes or potentially unsustainable practices. For example, a large amount of mineral fertilizer is often used to mass-produce microalgae. More research is required to make biofuel production more sustainable and suitable at large scale. An attractive way to overcome these issues is to develop an integrated production system with minimal inputs to reduce the environmental cost of production by recycling nutrients. This can be achieved through the anaerobic digestion of algal biomass. The anaerobic digestion process not only produces biogas but also allows nutrient recycling for repeat algae cultivation. On the other hand, lipid extraction for biodiesel production leaves a residue that is a potential substrate for anaerobic digestion. Lipid-extracted biomass may have an advantage over pure algal cultures of a higher native digestibility due to cell disruption during the lipid extraction process. Hence, an integrated system of biodiesel and biogas production using anaerobic digestion effluent as a nutrient source for algae growth and lipid-extracted biomass as substrate for digestion may present a good option. This thesis focused on the optimization of a closed nutrient loop for oil and biogas production through anaerobic digestion of microalgae. The study was oriented towards the scalability of the system aiming to optimize the main aspects that currently jeopardize the application of the proposed biorefinery at large scale. To address these issues three main aspects were investigated: (1) Wet and solvent-free lipid extraction, (2) Osmotic shock as pre-treatment for lipid extraction and biogas production and (3) Nutrient recycling for algae growth. This dissertation has been structured as follows: Chapter 1 is a literature review of the system proposed. Chapter 2 evaluates the anaerobic digestion of the microalga Scenedesmus dimorphus under continuous conditions as well as the potential of the anaerobic digestate as culture medium for the same species. In chapter 3 the feasibility of a wet solvent-free lipid extraction procedure by using osmotic shock is evaluated as pre-treatment. The species Dunaliella salina and Chaetoceros muelleri were chosen for this purpose as they have very fragile cell wall. Besides, the methane Publications included in this thesis GONZÁLEZ-GONZÁLEZ, L. M., ELTANAHY, E...

show abstract

Correlations between biochemical composition and biogas production during anaerobic digestion of microalgae and cyanobacteria isolated from different sources of Turkey

Cited by 33 publications

References 41 publications

Pretreatment, Anaerobic Codigestion, or Both? Which Is More Suitable for the Enhancement of Methane Production from Agricultural Waste?

Pretreatment, Anaerobic Codigestion, or Both? Which Is More Suitable for the Enhancement of Methane Production from Agricultural Waste?

Effects of Hydrodynamic Cavitation-Assisted NaOH Pretreatment on Biofuel Production from Cyanobacteria: Promising Approach

Development of a closed loop microalgal oil production system through anaerobic digestion and nutrient recycling

Contact Info

Product

Resources

About