Factors affecting seasonal variation of membrane filtration resistance caused by Chlorella algae

Water Research
Sandhya BabelHiroaki Ozaki

Abstract

A seasonal fluctuation pattern was observed in membrane filtration resistance by Chlorella algae cultured in open ponds in the tropical environment. In order to investigate the causes of this phenomenon, Chlorella was cultivated under controlled conditions and the cake resistance was measured by batch filtration in dead-end mode. The filtration resistance was found to be a function of environmental conditions. Algae could grow favourably and offered low specific cake resistance (R,s) on the order of 10(11) m/g for the culture temperature from 28 degrees C to 35 degrees C. The algal growth was inhibited and the specific cake resistance increased to the order of 10(12) m/g below or above this optimum temperature range. Strong solar radiation, coupled with high temperatures, also inhibited the growth of algae and resulted in higher specific cake resistance. The specific cake resistance of algae cultured at different temperatures increased with the amount of the extracellular organic matter (EOM) extracted by 0.1 N NaOH. Hence EOM, rather than bacteria present in the mono-algal culture, was considered to be the primary factor affecting the cake resistance. The specific cake resistance increased drastically after actively growing ce...Continue Reading

References

Sep 8, 2000·AIHAJ : a Journal for the Science of Occupational and Environmental Health and Safety·S M SavelyT H Connor

❮ Previous
Next ❯

Citations

Jun 6, 2007·Archives of Environmental Contamination and Toxicology·S Zargar, T K Ghosh
Jul 14, 2010·Bioresource Technology·Yujie FengDawei Zhang
Nov 11, 2018·Environmental Science and Pollution Research International·Elena OnyshchenkoAnatoly Dvoretsky
Jan 6, 2017·Environmental Science and Pollution Research International·Mansour IssaouiMohieddine Fourati
May 14, 2018·Environmental Science and Pollution Research International·Keerthi Katam, Debraj Bhattacharyya
Apr 18, 2019·Environmental Geochemistry and Health·Cong MaJeffrey R McCutcheon
Mar 11, 2017·Environmental Science and Pollution Research International·Quang Viet LyJin Hur
Nov 20, 2016·Journal of Environmental Management·Chunguang LiuHongwen Sun
Mar 15, 2021·Water Environment Research : a Research Publication of the Water Environment Federation·Keerthi KatamDebraj Bhattacharyya
Jun 19, 2009·Environmental Science & Technology·Haiou HuangJoseph G Jacangelo
Dec 17, 2009·Environmental Science & Technology·John G MinneryWendy Heiger-Bernays

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.