Polyamphoteric flocculants for the enhanced separation of cellular suspensions

Morrissey, Kathryn Lee; He, Chunlin; Chapman, Rebeccah Z.; Żołnierowski, Lucjan; Stoykovich, Mark P.

doi:10.1016/j.actbio.2016.03.042

Cited by 9 publications

(2 citation statements)

References 54 publications

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“…Here also should be mentioned selective flocculation -the most promising method of concentrating and enriching minerals, extracting particularly valuable substances from raw materials [6,7]. Flocculants are used for cell suspension concentration [8], different concentrated solutions (syrups [9], brines [10]) treatment, etc.) In the works [11][12][13][14][15][16] flocculants receiving ways, the main properties and practical use are considered.…”

Section: Introductionmentioning

confidence: 99%

Chemical Selection for Flocculation of the Sludges Produced During Lime Neutralization of Acidic Spent Pickling Solutions and Rinse Water from Steel Pipe Mill

Царев¹,

Tatyannikova²

2020

Kms

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Acidic spent pickling solutions and rinse water are produced during steel pipe acid pickling. They are usually neutralised with lime in a neutralisation plant and pumped in the form of a wet sludge to a landfill. This is one of the main environmental issues of Russian steel mills. The implementation of sludge treatment units, including equipment for sludge polymer conditioning and dewatering, is an import consideration when seeking to reduce the impact of steel mills on human health and the environment. The researches results of polymer conditioning of the aggressive wastewater sludges by flocculants are reflected in the paper. Sludge samples were obtained from the neutralisation plant of an Ural’s steel pipe mill. Sludges of two types were investigated: the sludge which is formed in clarifiers during spent pickling solutions neutralization with lime and the sludge which is formed in clarifiers during rinse water neutralization with lime. During the work non-ionic, cationic, and anion flocculants Praestol® efficiency was estimated. The shortest time of water capillary suction from the flocculated sludge was accepted as efficiency criterion of flocculant processing. It was defined with use of the capillary suction timer Fann® and Whatman® 17 chromatographic paper. It is established that: non-ionic focculant Praestol® 2500 dose of 4–5 g/kg dry solids is effective for conditioning of the sludge produced during lime neutralization of acid spent pickling solutions; the anionic flocculant Praestol® 2540 dose of 1.5–2 g/kg dry solids is effective for conditioning of the sludge produced during lime neutralization of acid rinse water. The empirical response surfaces and the contour plots showing the relationship between capillary suction time and a dosage of flocculant and a charge density (% hydrolysis) of a flocculant were reveived. Keywords: steel pipe mill, acid pickling, wastewater, sludges, flocculants, capillary suction time

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Section: Introductionmentioning

confidence: 99%

Chemical Selection for Flocculation of the Sludges Produced During Lime Neutralization of Acidic Spent Pickling Solutions and Rinse Water from Steel Pipe Mill

Царев¹,

Tatyannikova²

2020

Kms

View full text Add to dashboard Cite

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“…This makes polyampholytes very soluble in water with a strong affinity for charged surfaces. [1][2][3][4] Polyampholytes have wide applications in biomedicine, 5 water purification, 6 food technology, 7 and drag reduction. 8 Proteins are considered natural polyampholytes, 9 making understanding of these polymers very important for biology and biophysics.…”

Section: Introductionmentioning

confidence: 99%