Effect of phosphorus addition on nutrient removal from wastewater with the cyanobacterium Phormidium bohneri

Laliberté, G.; Lessard, Paul; Noüe, J. de la; Sylvestre, Silvia Helena Zacarias

doi:10.1016/s0960-8524(96)00144-7

Cited by 70 publications

(29 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…(6) have been found to be efficient in bioremediation of wastewater rich in phosphate, nitrate, ammonia, and urea. Phormidium bohneri Schmidle, a tropical cyanobacterium, shows self-aggregation and an ability to sediment that lends itself to serving as a biotreatment system for wastewater in temperate and warm climates (18).…”

mentioning

confidence: 99%

Wastewater Utilization for Poly-β-Hydroxybutyrate Production by the Cyanobacterium Aulosira fertilissima in a Recirculatory Aquaculture System

Samantaray

Nayak

Mallick

2011

Appl Environ Microbiol

View full text Add to dashboard Cite

Intensive aquaculture releases large quantities of nutrients into aquatic bodies, which can lead to eutrophication. The objective of this study was the development of a biological recirculatory wastewater treatment system with a diazotrophic cyanobacterium, Aulosira fertilissima, and simultaneous production of valuable product in the form of poly-␤-hydroxybutyrate (PHB). To investigate this possible synergy, batch scale tests were conducted under a recirculatory aquaculture system in fiber-reinforced plastic tanks enhanced by several manageable parameters (e.g., sedimentation, inoculum size, depth, turbulence, and light intensity), an adequate combination of which showed better productivity. The dissolved-oxygen level increased in the range of 3.2 to 6.9 mg liter ؊1 during the culture period. Nutrients such as ammonia, nitrite, and phosphate decreased to as low as zero within 15 days of incubation, indicating the system's bioremediation capability while yielding valuable cyanobacterial biomass for PHB production. Maximum PHB accumulation in A. fertilissima was found in sedimented fish pond discharge at 20-cm culture depth with stirring and an initial inoculum size of 80 mg dry cell weight (dcw) liter ؊1 . Under optimized conditions, the PHB yield was boosted to 92, 89, and 80 g m ؊2 , respectively for the summer, rainy, and winter seasons. Extrapolation of the result showed that a hectare of A. fertilissima cultivation in fish pond discharge would give an annual harvest of ϳ17 tons dry biomass, consisting of 14 tons of PHB with material properties comparable to those of the bacterial polymer, with simultaneous treatment of 32,640 m 3 water discharge.Over the last 2 decades, aquaculture has gone through major changes, growing from small-scale homestead level activities to large-scale commercial farming, which is driving the industry toward more intensive practices. One of the major drawbacks of this trend lies in the waste derived from fish feed and its metabolic end products. These include uneaten food, feces and excreta, and dissolved inorganic nutrients, which are transported in water in various concentrations and can cause eutrophication of the water resources that receive them (23). Therefore, to combat this problem, a novel technique, i.e., a recirculatory aquaculture system (RAS), has been proposed, which is based on conservation of the limited water and abatement of water pollution caused by the expanding aquaculture industries. The most prominent characteristic of this system is the presence of a biofilter, which treats water contaminated by dissolved organics and ammonia rather than discharging these contaminants directly into bodies of water.Cyanobacteria (blue-green algae) are O 2 -evolving photosynthesizing prokaryotes that can be successfully cultivated in wastewater due to their ability to use inorganic nitrogen and phosphorus for their multiplication. For example, Spirulina platensis (5, 10), Spirulina maxima (25), Romeria sp. (3), Synechococcus sp. strain PCC 7942 (16), Schizothrix calcicola, Pho...

show abstract

mentioning

confidence: 99%

Wastewater Utilization for Poly-β-Hydroxybutyrate Production by the Cyanobacterium Aulosira fertilissima in a Recirculatory Aquaculture System

Samantaray

Nayak

Mallick

2011

Appl Environ Microbiol

View full text Add to dashboard Cite

show abstract

“…Phormidium sp., which was dominant in this study, frequently appeared in eutrophic stagnant waters, and Phormidium sp. rapidly formed colonies and reproduced well under low-light intensities [49,50]. Higher reproduction capacities have been reported for Phormidium sp.…”

Section: Species Composition Of Periphyton After the Artificial Streamentioning

confidence: 81%

“…Higher reproduction capacities have been reported for Phormidium sp. compared with other species [50].…”

Section: Species Composition Of Periphyton After the Artificial Streamentioning

confidence: 91%

Effects of Water Velocity and Specific Surface Area on Filamentous Periphyton Biomass in an Artificial Stream Mesocosm

Ahn

Song

Lee

et al. 2013

Water

View full text Add to dashboard Cite

Abstract:To evaluate the effects of water velocity and artificial substratum characteristics on the growth rate and biomass accumulation of periphyton, an artificial stream mesocosm experiment was conducted using alternative water sources collected from the Mangwall Stream (MW), the Han River (HR), and bank filtration water (BFW) from the Han River in the Republic of Korea. The measured concentrations of organic matter and inorganic nutrients in the MW were higher than in the HR and BFW. The surface of tile is relatively smooth and nonporous, whereas the surfaces of concrete and pebble are rough with numerous isolated pores in which filamentous periphyton become immobilized against hydrodynamic shear stress and mat tensile strength. Compared with the periphyton biomass of the HR and BFW, the peak biomass in the MW was significantly higher due to higher nutrient concentrations in the MW. Reasonable linear relationships (R 2 ≥ 0.69) between water velocity and total periphyton biomass/growth rate were obtained, indicating that water velocities above critical values can cause a reduction in biomass accrual. In addition, reasonable relationships (R 2 ≥ 0.58) between specific surface area and total periphyton biomass were obtained for the HR and BFW, indicating that an increase in the specific OPEN ACCESSWater 2013, 5 1724 surface area of the substratum can lead to an increase in periphyton biomass in a nutrient-poor water body. Principal components analysis (PCA) results indicate that nutrient concentrations were the first dominant limiting factor for the growth and accumulation of periphyton, and water velocity and the specific surface area of the substratum were determined to be potential limiting factors. Consequently, the growth rate and biomass accumulation of periphyton were considered to be a complex function of nutrient concentrations, water velocities, and substratum characteristics.

show abstract

“…Other widely used microalgae cultures for nutrient removal are Chlorella [115] and Spirulina species [116]. Nutrient removal capacities of Nannochloris [117]), Botryococcus brauinii [118] and cyanobacterium Phormidium bohneri have also been investigated [119][120]. Environmental applications production of biodiesel and other bio-products from microalgae can be more environmentally sustainable, cost-effective and profitable, if combined with processes such as wastewater and flue gas treatments.…”

Section: Wastewater Treatmentsmentioning

confidence: 99%

Microalgal Biotechnology: Prospects and Applications

Mostafa¹

2012

Plant Science

View full text Add to dashboard Cite

Plant Science 276composition, pigments and different constituents which may vary with salt stressed culture conditions and describe the antioxidant characteristics of algae. What are microalgae?Microalgae are prokaryotic or eukaryotic photosynthetic microorganisms that produce carbohydrates, proteins and lipids as a result of photosynthesis. They can grow rapidly and live in harsh conditions due to their unicellular or simple multicellular structure. Examples of prokaryotic microorganisms are Cyanobacteria (Cyanophyceae) and eukaryotic microalgae are for example green algae (Chlorophyta) and diatoms (Bacillariophyta). Microalgae are present in all existing earth ecosystems, not just aquatic but also terrestrial, representing a big variety of species living in a wide range of environmental conditions. It is estimated that more than 50,000 species exist, but only a limited number, of around 30,000, have been studied and analyzed [4]. Sunlight, water, nutrients and arable land are the major requirements for growing algae. Micro algae have the ability to fix CO2 using solar energy with efficiency 10 times greater than that of the terrestrial plants with numerous additional technological advantages. Algae are more efficient at utilizing sunlight than terrestrial plants, consume harmful pollutants, have minimal resource requirements and do not compete with food or agriculture for precious resources [5].

show abstract

Effect of phosphorus addition on nutrient removal from wastewater with the cyanobacterium Phormidium bohneri

Cited by 70 publications

References 14 publications

Wastewater Utilization for Poly-β-Hydroxybutyrate Production by the Cyanobacterium Aulosira fertilissima in a Recirculatory Aquaculture System

Wastewater Utilization for Poly-β-Hydroxybutyrate Production by the Cyanobacterium Aulosira fertilissima in a Recirculatory Aquaculture System

Effects of Water Velocity and Specific Surface Area on Filamentous Periphyton Biomass in an Artificial Stream Mesocosm

Microalgal Biotechnology: Prospects and Applications

Contact Info

Product

Resources

About