Cellular proteins of Microcystis aeruginosa inhibiting coagulation with polyaluminum chloride

Takaara, Tomoko; Sano, Daisuke; Konno, Hiroshi; Omura, Tatsuo

doi:10.1016/j.watres.2007.01.035

Cited by 96 publications

(60 citation statements)

References 13 publications

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“…Previous studies showed that physiological and ecological structures of algae, algae activities, surface charge and algae metabolites are the primary factors that affect coagulation [14,15]. It is also found that there is a positive correlation between the removal rate of algae and turbidity removal [16].…”

Section: Removal Of Algaementioning

confidence: 99%

Test Study of Enhanced Coagulation for Conventional Treatment with Low Temperature and Low Turbidity

SONG¹,

LI²,

SUN³

et al. 2015

JRST

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Sole use of polymeric aluminum ferric chloride (PAFC) and its combination with composite polymeric aluminum ferric chloride/poly-dimethyl-diallyl-ammonium chloride coagulant (PAFC-PDMDAAC), chlorine dioxide (ClO 2 ) and composite potassium permanganate (PPC) were tested for treating retrieved water from the Yellow river during the period of low temperature and low turbidity. Such tests were carried out under full load operation in a water plant with conventional process. Results showed that the combined use of PPC and PAFC-PDMDAAC was more effective in treating influent with low temperature and low turbidity than the other coagulants. The turbidity, oxygen consumption, total trihalomethanes (THM) and absorbable organic halogens (AOX) in the effluent were compared with effluent under the sole treatment of PAFC, reduced by 76.8%, 14.2%, 60.8% and 19.4%, respectively. The operation cost, however, was only increased by 0.024 yuan/m 3 , denoting that it is a cost-effective method.

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Section: Removal Of Algaementioning

confidence: 99%

Test Study of Enhanced Coagulation for Conventional Treatment with Low Temperature and Low Turbidity

SONG¹,

LI²,

SUN³

et al. 2015

JRST

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“…Algal organic matter (AOM) interferes with the water treatment process, which includes a reduction in the coagulation efficiency resulting in increased coagulant demand (Bernhardt et al 1985;Takaara et al 2007;Ma et al 2012), membrane fouling (Campinas and Rosa 2010), higher production of hazardous disinfection by-products (Huang et al 2009;Fang et al 2010) and disagreeable odour and taste compounds (Li et al 2012). Cyanobacteria, usually a prevailing component of algal blooms, also produce many toxins (Harada 2004).…”

Section: Introductionmentioning

confidence: 99%

Effect of cyanobacterial peptides and proteins on coagulation of kaolinite

Novotná

Barešová

Čermáková

et al. 2016

European Journal of Environmental Sciences

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Coagulation of peptides and proteins produced by the cyanobacterium Microcystis aeruginosa and their influence on the coagulation of hydrophobic kaolinite particles were investigated. For this purpose, the dose of ferric sulphate used as the coagulant was optimized and jar tests with kaolinite, peptides/proteins and both kaolinite and peptides/proteins were carried out under different pH conditions. At pH 4-5.5, the peptides/proteins were efficiently coagulated and peptides/proteins were also found to contribute to the coagulation of kaolinite particles at this pH. Charge neutralization and adsorption were found to be the dominant coagulation mechanisms. The coagulation efficiency and the character of the prevailing coagulation mechanism were strongly dependent on the charge characteristics of the peptides/proteins, kaolinite and hydrolysis products of iron, thus on the pH value. At a pH of about 6, the coagulation process deteriorated due to the formation of soluble Fe-peptide/protein complexes.

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“…Effective removal of natural organic matter (NOM) and especially that produced by a vast development of phytoplankton (Algal Organic Matter -AOM) is one of the very significant challenges of the purification of the surface waters (Bernhardt et al, , 1986(Bernhardt et al, , 1989Hoyer et al, 1987;Takaara et al, 2005Takaara et al, , 2007Pivokonsky et al, 2006). Generally, these organic matters can be distinguished into the substances that are released by metabolic activity of micro-organisms -the extracellular organic matter (EOM) and the substances released during the process of their decay -the intracellular organic matter (COM) (Pivokonsky et al, 2006;Lüsse et al, 1985;Hoyer et al, 1985).…”

Section: Introductionmentioning

confidence: 99%

“…The reason is that these organic compounds are released suddenly in large quantities during decay of phytoplankton. Another very important reason is different chemical composition of COM in comparison to the other NOM and EOM (Takaara et al, 2005(Takaara et al, , 2007Pivokonsky et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

The Effect of Cellular Organic Matter Produced by Cyanobacteria Microcystis Aeruginosa on Water Purification

Pivokonský¹,

Pivokonská²,

Bäumeltová³

et al. 2009

Journal of Hydrology and Hydromechanics

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The aim of this paper is to investigate the influence of COM (Cellular Organic Matter) produced by Microcystis aeruginosa on the process of water purification by destabilisation and subsequent aggregation of the impurity particles. The research was carried out with a raw water into which COM was added. The removal efficiency of the most significant components of COM, i.e. polysaccharides and proteins, was investigated. It was found that the removal efficiency of polysaccharides and proteins was dependent on the reaction conditions (pH, type of destabilisation reagent and its dosage). The removal efficiency of COM was relatively low. It was about 46% and 41% using ferric sulphate and aluminium sulphate aggregation, respectively. In comparison to the other organic components of COM, mainly polysaccharides, the proteins are removed with a higher efficiency. The GPC analyses of the residual COM showed that the proteins of higher molecular weight were aggregated with a higher efficiency. Cílem práce je opis vlivu buněčných organických látek (COM) produkovaných sinicí Microcystis aeruginosa na proces úpravy vody pomocí destabilizace a následné agregace znečišťujících příměsí. Výzkum byl uskutečňován se syntetickou surovou vodou, do které byly přidány COM získané laboratorní kultivací M. aeruginosa. V průběhu laboratorních testů byla sledována především účinnost odstranění dvou základních složek COM, tj. polysacharidů a proteinů. Bylo zjištěno, že tato účinnost závisí především na reakčních podmínkách (typu a dávce destabilizačního činidla a pH). Účinnost odstranění COM byla poměrně nízká, maximální dosažená účinnost byla 46% při destabilizaci pomocí síranu železitého a 41% při použití síranu hlinitého. Bylo zjištěno, že s vyšší účinností jsou odstraňovány proteiny, obzvláště pak proteiny s vyšší molekulovou hmotností.KLÍČOVÁ SLOVA: organické látky produkované fytoplanktonem, buněčné organické látky, destabilizace, agregace, reakční podmínky, úprava vody.

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Cellular proteins of Microcystis aeruginosa inhibiting coagulation with polyaluminum chloride

Cited by 96 publications

References 13 publications

Test Study of Enhanced Coagulation for Conventional Treatment with Low Temperature and Low Turbidity

Test Study of Enhanced Coagulation for Conventional Treatment with Low Temperature and Low Turbidity

Effect of cyanobacterial peptides and proteins on coagulation of kaolinite

The Effect of Cellular Organic Matter Produced by Cyanobacteria Microcystis Aeruginosa on Water Purification

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