Review of Microalgae Harvesting via Co-Pelletization with Filamentous Fungus

Gultom, Sarman Oktovianus; Hu, Bo

doi:10.3390/en6115921

Cited by 137 publications

(102 citation statements)

References 82 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Some filamentous fungi, for instance, Rhizopus oryzae, Penicillium expansum and Mucor circinelloides, were reported to form pellets with 2 to 5 mm of diameter. The use of fungi for pelletization has already been successfully applied in wastewater treatment, where they are used to entrap the sludge solids [52]. Furthermore, some fungal species were reported to have lipid contents of over 30% of total biomass, making them suitable for biodiesel feedstock along with the microalgal biomass [51].…”

Section: Auto and Bioflocculationmentioning

confidence: 99%

Harvesting techniques applied to microalgae: A review

Barros

Gonçalves

Simões

et al. 2015

Renewable and Sustainable Energy Reviews

777

305

View full text Add to dashboard Cite

Research studies on microalgae have increased in the last decades due to the wide range of applications associated to these photosynthetic microorganisms. Microalgae are an important source of oils and other biomolecules that can be used in the production of biofuels and high-valued products. However, the use of microalgae in these green processes is still not economically viable. One of the main costs associated to microalgal production is related to the harvesting process, as it usually accounts for about 20-30% of total cost. Therefore, this review focuses on the main harvesting processes applied to microalgae, presenting the main advantages and disadvantages of each method, to allow the selection of an appropriate procedure to effectively separate microalgal biomass from the culture medium. To reduce the associated costs, it is common to harvest microalgae in a two-step separation: (i) thickening procedures, in which microalgal slurry is concentrated to about 2-7% of total suspended solids; and (ii) dewatering procedures, which result in the concentration of microalgal slurry to 15-25% of total suspended solids. Selection of the adequate harvesting methods depends on the characteristics of the target microorganism and also on the type and value of the end product.

show abstract

Section: Auto and Bioflocculationmentioning

confidence: 99%

Harvesting techniques applied to microalgae: A review

Barros

Gonçalves

Simões

et al. 2015

Renewable and Sustainable Energy Reviews

777

305

View full text Add to dashboard Cite

show abstract

“…Previous studies [26,27] state that fungal growth in submerged culture undergoes mainly by three phases including micromorphological growth (germ tube elongation), macromorphological growth (pelletization) and fungal cell autolysis. Hence, the fungal as-sisted microalgal harvesting could result from the interaction of microalgal cells with fungal biomass at any of the above stated stages of fungal pelletization process as described by [14], in the coagulative-type pelletization, germinating spores possibly may cluster together along with the microalgal cell due to germinating spore to spore interaction and spore to microalgal cell interaction. Moreover, in the hyphal-elemental agglomeration, the microalgal cells might bind to the exposed hyphal tips of the geminating spores as soon as the germination starts followed by fungal hyphal growth resulting in its further interaction with other fungal hyphae and microalgal cells and subsequently the formation of algal-fungal pellet.…”

Section: The Possible Mechanism Of Microalgalfungal Pelletizationmentioning

confidence: 99%

“…The method for screening of PFF described by previous study [14], experiments were carried out in 250 ml conical flasks with 100 ml working volume. Two weeks-old Chlorlla sp.…”

Section: Screening Of Pellet Forming Fungal Strains In Chu-10 Media (mentioning

confidence: 99%

Harvesting of Chlorella sp. by Co-cultivation with Some Fil-amentous Fungi

Al-Shammari

2018

MJS

View full text Add to dashboard Cite

Algae are play a major role as straight producers of biofuels, so expansion of a new. harvestingtechnology is important to achieve economic feasibility of biofuel production from algae.. Fungal pelletization-assisted.. Microalgal harvesting has Emerged as new research area for decreasing the harvesting cost and energy inputs in the algae-to-biofuel method. The present study tried to optimize process circumstances as (substrate inputs, process time and pH). Through choice of a robust fungal strain. Four fungal strains (Aspergillus terreus, Trichoderma sp., Mucor sp. and Rhizopus sp.) were screened for their pelletizing efficiency in fresh/supplemented chu-10 with selected media nutrient (glucose, nitrogen and phosphorous). Results showed that Aspergillus terreus was the most efficient strain for pelletizing in the nutrient supplemented chu-10 with its neutral pH (7) and acidic pH (5). Stimulatingly, A. terreus was capable to harvest nearly 100 % of the Clorella sp. cells (1×10 6 spore/ml at optical density (OD) approximately 2.5 initial working algal concentration) within only 24 h. at supplementation of (10 g/l glucose, 2.5 mg/l aNH 4 NO 3 and 0.5 mg/l mK 2 HPO 4 ) also performed well at lower glucose level (5 g/l) can also results in similar harvesting but its need relatively higher incubation time. The procedure kinetics in term of harvesting index (H. I) as well as the variation of residual glucose and pH with time was also studied. The mechanism of harvesting process was studied through microscopic, examination. A. terreus strain investigated in this study could emerge as an efficient, sustainable and economically viable tool in microalgae harvesting for biofuel production and time conservation.

show abstract

“…The negative charge of the cell surface is significant for microalgae growth, mainly for preventing the natural aggregation of suspended cells. At neutral pH, microalgae reveal a slightly negative charge because of the presence of proton-active carboxylic, phosphoric, phosphodiester, hydroxyl, and amine functional groups [34]. Nanoecotoxicological Effects of a Sunscreen Formulation based on TiO 2 Nanoparticles on Microalgae from Guanabara Bay (Rio de Janeiro, Brazil) 6/9…”

Section: Nanoecotoxicological Effects Of a Sunscreen Formulation Basementioning

confidence: 99%

Nanoecotoxicological Effects of a Sunscreen Formulation based on Tio2 Nanoparticles on Microalgae from Guanabara Bay (Rio de Janeiro, Brazil)

Abe¹,

Cunha²,

Salomon³

et al. 2017

MOJPS

View full text Add to dashboard Cite

The rise of nanotechnology has resulted in an increase in the use of nanoproducts, such as sunscreens based on nanoparticles of TiO 2 (TiO 2 -Np), which reach aquatic ecosystems through their manufacture, consumption and disposal. Studies indicate that TiO 2 -Np have an ecotoxicological potential, inactivating algae from the Anabaena, Microcystis and Melosira genera. Tetraselmis sp., abundant phytoplanktonic organisms of Guanabara Bay (Rio de Janeiro, Brazil), has been exposed to any discarded material released into this environment. In order to evaluate the effects of TiO 2 -Np on Tetraselmis sp., treatments with different doses of TiO 2 -Np were performed and their morphology, morphometry, surface charge, chlorophyll a rate and catalase production were analyzed. Under normal culture conditions, doses over 25 mg.L -1 caused intense precipitation, agglomeration and disruption of the cells, with remarkable variation of the zeta potential. No significant modification in the amount of chlorophyll a was observed, while the catalase production decreased only by 100 mg.L -1 of TiO 2 -Np. The results showed that TiO 2 -Np induced several effects in algae, highlighting their cell agglomeration. In conclusion, TiO 2 -Np provoked harmful effects in Tetraselmis sp., an important phytoplanktonic organism of Guanabara Bay (Rio de Janeiro, Brazil), and may disturb the dynamics of this ecosystem.

show abstract

Review of Microalgae Harvesting via Co-Pelletization with Filamentous Fungus

Cited by 137 publications

References 82 publications

Harvesting techniques applied to microalgae: A review

Harvesting techniques applied to microalgae: A review

Harvesting of Chlorella sp. by Co-cultivation with Some Fil-amentous Fungi

Nanoecotoxicological Effects of a Sunscreen Formulation based on Tio2 Nanoparticles on Microalgae from Guanabara Bay (Rio de Janeiro, Brazil)

Contact Info

Product

Resources

About