Intensification of Wastewater Treatment Processes During Coal Enrichment Using Modified Polyacrylamide Flocculants

Yakovchenko, M. A.; Пинчук, Л Г; Kolosova, M. M.; Filipovich, Larisa A.; Masaev, V.Yu.

doi:10.1088/1755-1315/224/1/012051

Cited by 4 publications

(4 citation statements)

References 8 publications

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“…The particle size analysis performed by laser beam particle size-analyzer on the as obtained e uent sample of Dahibari washery and also of the occulated ocs obtained with 8 gpt of dosage at natural pH of 8.72 using three different types of occulants (anionic, cationic and non-ionic) are shown in Figs. 12…”

Section: Particle Size Analysis Of E Uent Coal and Ocsmentioning

confidence: 99%

“…Flocculants are high-molecular long chain water-soluble polymeric compounds that bind the surfaces of the dispersed particles physically and combine them to form agglomerates known as ocs that settle rapidly. The widely used occulants are; the polyelectrolytes of anionic or cationic or non-ionic types having high molecular weight with different structures of macromolecules which intensify the solid-liquid separations in coal washing plants [12]. Longback Slater and Kitchener reported that the application of certain polymers as occulants helped in promoting the settling rates of solids in industrial disperse systems [13].…”

Section: Introductionmentioning

confidence: 99%

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Studies on Clarification of Coal Washery Effluent Using Polymeric Flocculants and Settling Kinetics

Pimpalkar¹,

Suresh²,

Singh³

2021

Preprint

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Settling tests were conducted on the washery effluent using three types of flocculants namely cationic (Telfloc-3674F), anionic (Magna-1011) and non-ionic (Nalco-83370+). For the study purpose coal washery effluent (having pH of 8.72) was collected from a newly commissioned plant-thickener. Tests were conducted by varying the pH of the pulp at three levels of acidic (4.0), alkaline (11.0) and the natural pH (8.72) of the as collected effluent, besides the flocculent dosages varied at four levels (2, 4, 6 and 8 gpt) for each of the flocculants stated. The results of these tests, estimated in terms of initial settling rate and turbidity indicated that; among the three flocculants tested Telfloc-3674F and Magna-1011 gave best results as compared to Nalco-83370+ flocculent at a washery water pH 8.72. The effect of molecular weight of the flocculants on settling of solids in effluent has been established in terms of the kinetics with a characteristic number for each of the type of flocculants used.

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Section: Particle Size Analysis Of E Uent Coal and Ocsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Studies on Clarification of Coal Washery Effluent Using Polymeric Flocculants and Settling Kinetics

Pimpalkar¹,

Suresh²,

Singh³

2021

Preprint

View full text Add to dashboard Cite

show abstract

“…Flocculants are high-molecular long chain water-soluble polymeric compounds that bind the surfaces of the dispersed particles physically and combine them to form agglomerates known as ocs that settle rapidly. The widely used occulants are; the polyelectrolytes of anionic or cationic or non-ionic types having high molecular weight with different structures of macromolecules which intensify the solid-liquid separations in coal washing plants (Yakovchenko et al 2019). Long-back Slater and Kitchener reported that the application of certain polymers as occulants helped in promoting the settling rates of solids in industrial disperse systems (Slater and Kitchener 1966).…”

Section: Introductionmentioning

confidence: 99%

Studies on Clarification of Coal Washery Effluent Using Polymeric Flocculants and Settling Kinetics

Pimpalkar

Nikkam

Singh

2021

Preprint

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Settling tests were conducted on the washery effluent using three types of flocculants namely cationic (Telfloc-3674F), anionic (Magna-1011) and non-ionic (Nalco-83370 + ). For the study purpose coal washery effluent (having pH of 8.72) was collected from a newly commissioned plant-thickener. Tests were conducted by varying the pH of the pulp at three levels of acidic (4.0), alkaline (11.0) and the natural pH (8.72) of the as collected effluent, besides the flocculent dosages varied at four levels (2, 4, 6 and 8gpt) for each of the flocculants stated. The results of these tests, estimated in terms of initial settling rate and turbidity indicated that; among the three flocculants tested Telfloc-3674F and Magna-1011 gave best results as compared to Nalco-83370 + flocculent at a washery water pH 8.72. The effect of molecular weight of the flocculants on settling of solids in effluent has been established in terms of the kinetics with a characteristic number for each of the type of flocculants used.

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“…The Jiang research group reported using hydrogel-coated mesh for oil/water separation [38,39]. Furthermore, polyacrylamide (PAM) hydrogel has been broadly researched for wastewater treatment as a coagulator or flocculator [40,41,42]. Hence, the combination of 3D printing mesh and PAM hydrogel is promising for oil/water separation.…”

Section: Introductionmentioning

confidence: 99%

3D Printing of an Oil/Water Mixture Separator with In Situ Demulsification and Separation

Yan

et al. 2019

Polymers

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Currently, many meshes, membranes, and fabrics with extreme wettability of superhydrophobicity/superoleophilicity, or superhydrophilicity and underwater superoleophobicity are promising candidates for oil/water mixture separation. Nevertheless, a facile yet effective way to design and fabricate porous mesh still remains challenging. In this work, fused deposition modeling (FDM) 3D printing of Fe/polylactic acid (PLA) composites was employed to fabricate superhydrophilic and underwater superoleophobic mesh (S-USM) with hydrogel coatings via the surface polymerization of Fe(II)-mediated redox reaction. In addition, salt of aluminum chloride was incorporated within the hydrogel coating, which was attributed to strengthening the demulsification of oil-in-water emulsions, resulting in efficient separation of oil-in-water mixtures. The S-USM was efficient for a wide range of oil-in-water mixtures, such as dodecane, diesel, vegetable oil, and even crude oil, with a separation efficiency of up to 85%. In this study, the flexible design and fabrication of 3D printing were used for the facile creation of spherical oil skimmers with hydrogel coatings that were capable of removing the floating oil. Most importantly, this work is expected to promote post-treatment processes using 3D printing as a new manufacturing technology and, in this way, a series of devices of specific shape and function will be expanded to satisfy desired requirements and bring great convenience to personal life.

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Intensification of Wastewater Treatment Processes During Coal Enrichment Using Modified Polyacrylamide Flocculants

Cited by 4 publications

References 8 publications

Studies on Clarification of Coal Washery Effluent Using Polymeric Flocculants and Settling Kinetics

Studies on Clarification of Coal Washery Effluent Using Polymeric Flocculants and Settling Kinetics

Studies on Clarification of Coal Washery Effluent Using Polymeric Flocculants and Settling Kinetics

3D Printing of an Oil/Water Mixture Separator with In Situ Demulsification and Separation

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