High density, dialysis culture of algae on sewage

Dor, Inka

doi:10.1016/0043-1354(75)90046-9

Cited by 18 publications

(2 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…High growth rates of algae are critical for a successful operation of such a coupled system. However, growth of algae in raw sewage seems to present problems that are specific to this medium, since their growth rate is very slow, with a doubling time of 50 h reported in laboratory batch culture experiments (7). In actual continuous operation of an oxidation pond, steady-state algal growth (Scenedesmus obliquus was generally the dominant species) was obtained only at a retention time of about 100 h (10,13,15).…”

mentioning

confidence: 99%

Toxicity of ammonia to algae in sewage oxidation ponds

Abeliovich¹,

Azov²

1976

Appl Environ Microbiol

244

View full text Add to dashboard Cite

Ammonia, at concentrations over 2.0 mM and at pH values over 8.0, inhibits photosynthesis and growth of Scenedesmus obliquus, a dominant species in high-rate sewage oxidation ponds. Photosynthesis of Chlorella pyrenoidosa, Anacystis nidulans, and Plectonema boryanum is also susceptible to ammonia inhibition. Dark respiration and cell morphology were unaffected by any combination of pH and ammonia concentrations tested, thus limiting the apparent effect to inhibition of the normal function of the chloroplasts. Methylamine had the same effect as ammonia, and its penetration into the cells was found to be pH dependent. Therefore, the dependence of toxicity of amines to algae on pH apparently results from the inability to penetrate the cell membrane in the ionized fonn. When operated at 120-h detention time of raw wastewater, the high-rate oxidation pond maintained a steady state with respect to algal growth and oxygen concentration, and the concentration of ammonia did not excced 1.0 mM. Shifting the pond to 48-h detention time caused an increase in ammonia concentration in the pond water to 2.5 mM, and the pond gradually turned anaerobic. Photosynthesis, which usually elevates the pH of the pond water to 9.0 to 10.0, could not proceed beyond pH 7.9 because of the high concentration of ammonia, and the algal population was washed out and reduced to a concentration that could maintain a doubling time of 48 h without photosynthesis bringing the pH to inhibitory levels. Under these conditions, the pH of the pond becomes a factor that limits the operational efficiency of the oxidation pond.

show abstract

mentioning

confidence: 99%

Toxicity of ammonia to algae in sewage oxidation ponds

Abeliovich¹,

Azov²

1976

Appl Environ Microbiol

244

View full text Add to dashboard Cite

show abstract

“…Ancak, çekme çözeltisi olarak deniz suyu kullanıldığında, yüksek osmotik basınç altında tıkanma eğilimleri yüksektir [191]. Ayrıca, membran diyaliz yöntemi de, konsantre mikroalgal biyokütle üretiminde kullanılmaktadır [193,194]. Yağ asitlerinin temel yapısı nötral (doymuş) ve polar (doymamış) yağ moleküllerinden meydana gelmektedir [196].…”

Section: Membran Filtrasyonu (Membrane Filtration)unclassified

Mi̇kroalglerden Yeni̇lenebi̇li̇r Bi̇yoyakit Üreti̇mi̇

Elcik¹,

Çakmakçı²

2017

Gazi Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

View full text Add to dashboard Cite

Fossil fuel reserves which supplying a major portion of energy needs, are depleting rapidly, and its environmental damages increases day by day. Therefore, like all developed and developing countries, our country have focused on the use of renewable energy sources. Within this scope in the our country, it was aimed gain of renewable energy sources to economy, promotion of sustainable energy production, and protection of environmental. Recently, one of the growing importance of renewable energy sources is the biomass energy. As an biomass energy source, all vegetable and animal organic substances which the main components are comprising carbohydrate compounds can be used. In these energy sources, microalgae seem promising for biofuel production due to their many advantages such as they have high photosynthetic efficiency, high biomass production, and they grow quickly. From microalgae, by using biochemical methods electricity, ethanol, hydrogen, methane and biodiesel and thermochemical methods syngas, biochar, biodiesel and electricity can be produced. In this review article, isolation of microalgae, microalgal biomass production, the methods used to biomass harvesting, and the availability of microalgae as a source of raw materials for renewable biofuels were viewed.

show abstract

Microalgae Bioproduction – Feeds, Foods, Nutraceuticals, and Polymers

Merz

Main

2017

Fuels, Chemicals and Materials From the Oceans and Aquatic Sources

View full text Add to dashboard Cite

High density, dialysis culture of algae on sewage

Cited by 18 publications

References 4 publications

Toxicity of ammonia to algae in sewage oxidation ponds

Toxicity of ammonia to algae in sewage oxidation ponds

Mi̇kroalglerden Yeni̇lenebi̇li̇r Bi̇yoyakit Üreti̇mi̇

Microalgae Bioproduction – Feeds, Foods, Nutraceuticals, and Polymers

Contact Info

Product

Resources

About