Introducing different poly (vinyl alcohol)s as new flocculant for kaolinated waste water

Nasim, Tanbir; Bandyopadhyay, Abhijit

doi:10.1016/j.seppur.2011.12.016

Cited by 31 publications

(10 citation statements)

References 21 publications

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“…[1][2][3] However, the industry waste water generated by these plants severely destroys and pollutes the natural water environment and further threatens human health, since this industry waste water is infamous for high turbidity caused by high levels of suspended solids (SS). [4][5][6] The task of separating suspended solids becomes more and more challenging and hard because these suspended solids are always negatively/positively charged and these colloidal particles suspend stably in the water. 7 According to statistics, the turbidity of the waste water has reached 10 000 NTU in some cases in China.…”

Section: Introductionmentioning

confidence: 99%

Fabricating an anionic polyacrylamide (APAM) with an anionic block structure for high turbidity water separation and purification

et al. 2017

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ab Ultraviolet (UV)-initiated template polymerization (UTP) was used as a feasible strategy to prepare a novel anionic polyacrylamide (APAM) with a microblock structure. In the template copolymerization system, acrylamide (AM) and sodium allylsulfonate (SAS) were used as monomers, and poly Results showed that the novel anionic microblock structure was formed in the template copolymer.Besides, the results of the association constant (K M ) indicated that the copolymerization followed I Zipup (ZIP) template polymerization mechanism, which indicated the formation of the microblock structure again. Parameters such as pH and dosage that affected the flocculation performance, flocculation kinetics and the FTIR spectra of the generated flocs were investigated to further observe the effect of anionic microblocks on flocculation performance and understand the relationship between the flocs and flocculants. Flocculation experimental results demonstrated that the anionic microblocks in the template copolymer could enhance the charge neutralization and bridging ability, and therefore an excellent flocculation performance of treating high turbidity water was observed.

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Section: Introductionmentioning

confidence: 99%

Fabricating an anionic polyacrylamide (APAM) with an anionic block structure for high turbidity water separation and purification

et al. 2017

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“…The ratio, t i / t 0 gave the relative viscosity, η r . The values of η r were used subsequently to calculate intrinsic viscosity [η] . Each stock solution was filtered to remove the dust particles before the viscosity measurements.…”

Section: Methodsmentioning

confidence: 99%

Copolymers from methyl methacrylate and butyl acrylate with hyperbranched architecture

Sengupta

Das

Ghorai

et al. 2017

J of Applied Polymer Sci

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This is a first report of the synthesis and characterization of acrylic copolymers from methyl methacrylate (MMA) and butyl acrylate (BA) with hyperbranched architecture. The copolymers were synthesized using a free radical polymerization (Strathclyde method) in emulsion technique. Divinyl benzene was used as the brancher which acted as a comonomer and 1-dodecanethiol was used as a chain terminating agent. A linear copolymer from MMA and BA was also synthesized for comparison. The hyperbranched architecture was established from spectroscopic and rheological measurements. The gel permeation chromatography showed all hyperbranched copolymers were low molecular weight with lower polydispersity index (PDI) ( M n 23,000, PDI 2.00) compared to the linear grade ( M n 93,000, PDI 2.20). They were more spherical and achieved lower viscosity (yet higher solubility, >90%) than the linear grade (<50%) which was mostly open ended. Lower viscosity at equivalent solid content made the hyperbranched polymers a potential binder for adhesive and coating application.

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“…where N 0 is the initial turbidity (143 NTU), N t is the turbidity as a function of time (1,4,7,11,14,17, and 20 min) aer slow stirring (50 rpm for 15 min) during each occulation test, and k is the kinetic constant of the occulation system.…”

Section: Determination Of K M C V and R Pmentioning

confidence: 99%

“…Thus far, various CPAMs and their modied forms have been successfully synthesized for use in heavy metal removal, oil mill effluent treatment, kaolin wastewater removal, highturbidity water separation and so on. [9][10][11][12] These occulants perform well and exhibit excellent occulation performance for the removal and separation of particles. Although progress and triumphs in the design and development of polymers have been achieved, great efforts are still needed to design new economic and efficient occulants or propose new ways to overcome bottlenecks in existing methods for preparing novel occulants.…”

Section: Introductionmentioning

confidence: 99%

The investigation of the specific behavior of a cationic block structure and its excellent flocculation performance in high-turbidity water treatment

et al. 2018

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Introducing different poly (vinyl alcohol)s as new flocculant for kaolinated waste water

Cited by 31 publications

References 21 publications

Fabricating an anionic polyacrylamide (APAM) with an anionic block structure for high turbidity water separation and purification

Fabricating an anionic polyacrylamide (APAM) with an anionic block structure for high turbidity water separation and purification

Copolymers from methyl methacrylate and butyl acrylate with hyperbranched architecture

The investigation of the specific behavior of a cationic block structure and its excellent flocculation performance in high-turbidity water treatment

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