Influence of organic matter on flocculation of Chlorella vulgaris by calcium phosphate precipitation

Beuckels, Annelies; Depraetere, Orily; Vandamme, Dries; Foubert, Imogen; Smolders, Erik; Muylaert, Koenraad

doi:10.1016/j.biombioe.2013.03.027

Cited by 68 publications

(41 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Autoflocculation by increasing the pH of the medium and electrolytic flocculation may be used to separate algae without the addition of chemicals and would be more economical than other harvesting techniques for marine microalgae [50,51]. Moreover, unlike other harvesting technologies, the cost contribution to algal lipid from electrolytic flocculation was unaffected by the concentration of algae in the algal water [52].…”

Section: High Capital and Operating Costs Hamper Commercial-scale Algmentioning

confidence: 99%

Microalgal biofuel revisited: An informatics-based analysis of developments to date and future prospects

et al. 2015

View full text Add to dashboard Cite

Section: High Capital and Operating Costs Hamper Commercial-scale Algmentioning

confidence: 99%

Microalgal biofuel revisited: An informatics-based analysis of developments to date and future prospects

et al. 2015

View full text Add to dashboard Cite

“…Because phosphate is a mineral resource with a limited supply, this flocculation method is unsustainable unless perhaps when microalgae are used for treating wastewaters with excessive phosphate concentrations. Beuckels et al (2013), however, showed that it is possible to recover the phosphate from the harvested biomass by dissolving the calcium phosphate through mild acidification.…”

Section: Autoflocculationmentioning

confidence: 96%

Harvesting of Microalgae by Means of Flocculation

Muylaert

Vandamme

Foubert

et al. 2015

Biofuel and Biorefinery Technologies

Self Cite

View full text Add to dashboard Cite

Large-scale production of microalgae for biofuels is still facing several major challenges to become competitive with other forms of renewable and nonrenewable energy. A major challenge is harvesting, which requires the separation of a low amount of biomass consisting of small individual cells from a large volume of culture medium. Flocculation is seen as a promising low-cost harvesting method for microalgae biomass. In this chapter, the challenges and potential advantages of using flocculation as a harvesting method for microalgae are reviewed.

show abstract

“…It is therefore recommended that investigations be carried out through pilot plant studies which involves continuous biomass harvesting and various unit operations and processes employed for mass microalgae cultivation. Some studies reported that flocculation of microalgae can occur spontaneously without the need for chemicals, referred to as autoflocculation which can be induced by increasing the medium pH [16]. According to Harith et al [17], harvesting efficiency of Chaetoceros calcitrans of higher than 90% was achieved by adjusting the culture pH to 10.2 using either NaOH or KOH.…”

Section: Correlation Of Zeta Potential Values and Flocculation Performentioning

confidence: 99%

Moringa oleifera SEED DERIVATIVES AS POTENTIAL BIO-COAGULANT FOR MICROALGAE Chlorella Sp. HARVESTING

Endut¹,

Hajar²,

Hamid³

et al. 2016

MJAS

View full text Add to dashboard Cite

Microalgae is an economical and potential raw material of biomass energy, which offer a wide range of commercial potential to produce valuable substances for applications in aquaculture feed, pharmaceutical purposes and biofuels production. However, lack of an economical, efficient and convenient method to harvest microalgae is a bottleneck to boost their full-scale application. Hence, this study was performed to investigate the potentialities of Moringa oleifera seed derivatives as an environmentally biocoagulant to harvest microalgae Chlorella sp. biomass from the water column, which acts as a binder to coagulate particulate impurities to form larger aggregates. Results shown M. oleifera to have better biomass recovery of 122.51% as compared to 37.08% of alum at similar dosages of 10 mg·L -1 . In addition, it was found that the zeta potential values of mixed microalgaecoagulant suspension shows positive correlation on the flocculation parameters. For biomass recovery, the correlation for M. oleifera protein powder showed the R 2 -value of 0.9565 whereas the control chemical flocculant, alum with the R 2 -value of 0.7920. It was evidence that M. oleifera has a great potential in efficient and economical for environmentally microalgae harvesting and the adaptation of biological harvesting technology especially for the purpose of aquaculture feed in Malaysia.Keywords: Chlorella sp., coagulation-flocculation, isoelectric point, Moringa oleifera, zeta potential Abstrak Mikroalga merupakan bahan mentah yang murah dan berpotensi untuk tenaga biojisim, yang menawarkan pelbagai peluang pengkomersialan untuk menghasilkan bahan bernilai untuk aplikasi dalam makanan akuakultur, farmaseutikal dan penghasilan bahan bakar bio. Walaubagaimanapun, kekurangan kaedah yang murah, cekap dan mudah untuk penuaian mikroalga merupakan halangan untuk meningkatkan aplikasi teknologi ini dalam skala yang lebih besar. Oleh itu, kajian ini telah dijalankan untuk menyiasat potensi derivatif biji Moringa oleifera sebagai bio-penggumpal biojisim mikroalga Chlorella sp., yang bertindak sebagai pengikat untuk menggumpalkan zarah enapcemar membentuk agregat yang lebih besar dari kolum air. Keputusan menunjukkan M. oleifera mempunyai pemulihan biojisim yang lebih baik iaitu 122.51% berbanding alum iaitu 37.08% pada dos yang sama sebanyak 10 mg·L -1 . Di samping itu, nilai keupayaan zeta campuran mikroalga dan penggumpal menunjukkan kolerasi positif terhadap parameter penggumpalan. Dalam pemulihan biojisim, kolerasi bagi serbuk protein M. oleifera menunjukkan nilai R 2 iaitu 0.9565 manakala penggumpal kimia kawalan, alum mempunyai nilai R 2 iaitu 0.7920. Ini membuktikan bahawa M. oleifera mempunyai potensi tinggi untuk penuaian mikroalga yang berkecekapan tinggi dan murah serta penyesuaian teknologi penuaian biologi terutamanya untuk tujuan makanan akuakultur di Malaysia.

show abstract

Influence of organic matter on flocculation of Chlorella vulgaris by calcium phosphate precipitation

Abstract: Influence of organic matter on flocculation of Chlorella vulgaris by calcium phosphate precipitationBiomass and bioenergy, vol 54, 107-114.

Cited by 68 publications

References 33 publications

Microalgal biofuel revisited: An informatics-based analysis of developments to date and future prospects

Microalgal biofuel revisited: An informatics-based analysis of developments to date and future prospects

Harvesting of Microalgae by Means of Flocculation

Moringa oleifera SEED DERIVATIVES AS POTENTIAL BIO-COAGULANT FOR MICROALGAE Chlorella Sp. HARVESTING

Contact Info

Product

Resources

About