Identification of microalgae from waste stabilization ponds and evaluation of electroflotation by alternate current for simultaneous biomass separation and cell disruption

Florentino, Anna Patrícya; Costa, Mayara Carantino; Nascimento, José Gilmar da Silva do; Abdala-Neto, Eliezer Fares; Mota, César R.; Santos, André Bezerra dos

doi:10.1590/s1413-41522019193972

Cited by 16 publications

(6 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Research conducted in wastewater treatment ponds reports that Chlamydomonas, Chlorella, Euglena, and Scenedesmus spp. are the most commonly occurring microalgal species in tropical, subtropical, and temperate climates (Abis and Mara, 2005;Ahmadi et al, 2005;Crimp et al, 2018;Florentino et al, 2019), with effective capacity to meet ammonium and P removal targets. Nutrient control and recovery from sewage is achieved via algal uptake, which offers a significant benefit over bacteria in that algae accumulate both N and P. Under some environmental/ operational conditions the microalgae perform "luxury P uptake," defined as the uptake of P beyond that required for growth and storage of phosphate within the biomass as PolyP (>1% P dry weight) (Powell et al, 2008).…”

Section: Wastewater Treatment and Phosphate Recyclingmentioning

confidence: 99%

Fixing the Broken Phosphorus Cycle: Wastewater Remediation by Microalgal Polyphosphates

et al. 2020

View full text Add to dashboard Cite

Phosphorus (P), in the form of phosphate derived from either inorganic (P i) or organic (P o) forms is an essential macronutrient for all life. P undergoes a biogeochemical cycle within the environment, but anthropogenic redistribution through inefficient agricultural practice and inadequate nutrient recovery at wastewater treatment works have resulted in a sustained transfer of P from rock deposits to land and aquatic environments. Our present and near future supply of P is primarily mined from rock P reserves in a limited number of geographical regions. To help ensure that this resource is adequate for humanity's food security, an energy-efficient means of recovering P from waste and recycling it for agriculture is required. This will also help to address excess discharge to water bodies and the resulting eutrophication. Microalgae possess the advantage of polymeric inorganic polyphosphate (PolyP) storage which can potentially operate simultaneously with remediation of waste nitrogen and phosphorus streams and flue gases (CO 2 , SO x , and NO x). Having high productivity in photoautotrophic, mixotrophic or heterotrophic growth modes, they can be harnessed in wastewater remediation strategies for biofuel production either directly (biodiesel) or in conjunction with anaerobic digestion (biogas) or dark fermentation (biohydrogen). Regulation of algal P uptake, storage, and mobilization is intertwined with the cellular status of other macronutrients (e.g., nitrogen and sulphur) in addition to the manufacture of other storage products (e.g., carbohydrate and lipids) or macromolecules (e.g., cell wall). A greater understanding of controlling factors in this complex interaction is required to facilitate and improve P control, recovery, and reuse from waste streams. The best understood algal genetic model is Chlamydomonas reinhardtii in terms of utility and shared resources. It also displays mixotrophic growth and advantageously, species of this genus are often found growing in wastewater treatment plants. In this review, we focus primarily on the molecular and genetic aspects of PolyP production or turnover and place this knowledge in the context of wastewater remediation and highlight developments and challenges in this field.

show abstract

Section: Wastewater Treatment and Phosphate Recyclingmentioning

confidence: 99%

Fixing the Broken Phosphorus Cycle: Wastewater Remediation by Microalgal Polyphosphates

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Other microalgae, including cyanobacterial species, that can be found in wastewater treatment plants are Euglena sp. [63], Micractinium inermum sp. [64], Spirulina maxima, and Synechocystis sp.…”

Section: Phycoremediation As a Tertiary Treatment Of Wastewatermentioning

confidence: 99%

Phycoremediation Processes for Secondary Effluent from Sewage Treatment Plants Using Photosynthetic Microorganisms: A Review

Pérez-Mora

Mejia-da-Silva

Cezare-Gomes

et al. 2023

Applied Microbiology

View full text Add to dashboard Cite

Taking into account the worrying scenario of water scarcity, it is essential to enable more efficient technologies for wastewater treatment. Wastewater may be treated by conventional biological processes that remove pathogenic organisms, particulate and soluble organic compounds, and other components. However, secondary effluents from treatment plants may still contain toxic elements or high concentrations of inorganic nutrients (mainly nitrogen and phosphorus), which enable the growth of photosynthetic microorganisms in water bodies, resulting in eutrophication. In this context, cultivation of photosynthetic microorganisms in secondary wastewater from sewage treatment allows the removal of nutrients from such wastewater, reducing the possibility of eutrophication. Moreover, microalgal biomass, produced in this tertiary wastewater treatment, may be harvested by different methods with the potential for different applications, such as fertilizer and biofuel.

show abstract

“…(Figure 3). Florentino et al (2019) evaluation of algal diversity in stabilization pond systems treating domestic wastewater showed that the genera Euglena and Chlorella were present in relatively high frequencies in five of the six effluents analyzed. The abundance of Synechocystis sp.…”

Section: Phytoplankton Community Structurementioning

confidence: 99%

Variability in phytoplankton community structure and influence on stabilization pond functioning

D’Alessandro

Nogueira

Hoffmann³

2020

Rev. ambiente água

View full text Add to dashboard Cite

Density of phytoplankton in stabilization ponds influences treatment performance. The study hypothesized that the phytoplankton community structure varies according to local and temporal changes and consequently influences the treatment of the effluent. Phytoplankton community structure in facultative and maturation ponds in central Brazil was analyzed to provide guidance on system operation and maintenance. Further, species density, abundance, diversity, richness, dominance and beta diversity were measured. The efficiency of the treatment was evaluated based on Biochemical Oxygen Demand (BOD). Additionally, a Canonical Correspondence Analysis (CCA) was used to investigate how physical and chemical variables influenced the composition of the most abundant species in the dry and rainy seasons and the microalgae that were most related to the removal of BOD. One hundred and sixty-eight taxa were recorded, and the most abundant classes in both ponds were Chlorophyceae and Cyanophyceae (40% potentially toxic). The maturation pond had greater adaptability in the rainy season, while the facultative pond was more flexible in the dry season. The best period of growth varied among species. In both ponds, Chlorella minutissima was the one which most contributed to the optimization of the treatment. Thus, identifying phytoplankton species and relating them to water quality parameters and weather can help to understand the ecological dynamics of wastewater treatment and provide useful information for the operation and maintenance of stabilization ponds.

show abstract

Identification of microalgae from waste stabilization ponds and evaluation of electroflotation by alternate current for simultaneous biomass separation and cell disruption

Cited by 16 publications

References 45 publications

Fixing the Broken Phosphorus Cycle: Wastewater Remediation by Microalgal Polyphosphates

Fixing the Broken Phosphorus Cycle: Wastewater Remediation by Microalgal Polyphosphates

Phycoremediation Processes for Secondary Effluent from Sewage Treatment Plants Using Photosynthetic Microorganisms: A Review

Variability in phytoplankton community structure and influence on stabilization pond functioning

Contact Info

Product

Resources

About