Polymeric Branched Flocculant Effect on the Flocculation Process of Pulp Suspensions in the Papermaking Industry

Blanco, Ángeles; Fuente, Elena; Monte, M. Concepción; Cortés, Noelia Mori; Negro, Carlos

doi:10.1021/ie8011837

Cited by 36 publications

(18 citation statements)

References 20 publications

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“…Flocculants are long chain water soluble polymers used to separate non‐settling fine solids (=particles) from aqueous suspensions. They are used in mineral processing, industrial and municipal wastewater treatment, oil sands tailings dewatering, paper making, and biotechnology . This work reviews different kinds of water soluble flocculants, focusing on advances in synthesis, characterization, and performance assessment in solid–liquid separation in mineral processing, oil sands tailings, and wastewater treatment.…”

Section: Introductionmentioning

confidence: 99%

Water Soluble Polymer Flocculants: Synthesis, Characterization, and Performance Assessment

Vajihinejad

Gumfekar

Bazoubandi

et al. 2018

Macro Materials & Eng

142

108

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Water soluble polymer flocculants are important constituents of solid–liquid separation units for the treatment of a variety of process‐affected effluents. The systematic development of a flocculant relies on a good understanding of flocculation process, polymer synthesis, polymer characterization, and, not the least, flocculation performance assessment as desired for a particular treatment process, all of which are essential to establish meaningful relationships between flocculant microstructure and flocculation efficiency. The aim of this article is to communicate the bigger picture of this research area to the readers. The recent advances in the application of bio/natural, synthetic, and stimuli‐responsive flocculants are reviewed. Then, the basic polymer reaction engineering tools to control the microstructure of flocculants are provided and the techniques for the quantification of flocculant microstructure are concisely discussed. This is followed by a review of the methods used for the characterization of particle‐polymer force measurement, and flocculation/dewatering assessment with attention to the characterization of aggregate structures.

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Section: Introductionmentioning

confidence: 99%

Water Soluble Polymer Flocculants: Synthesis, Characterization, and Performance Assessment

Vajihinejad

Gumfekar

Bazoubandi

et al. 2018

Macro Materials & Eng

142

108

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“…To improve the filler retention rate, it is necessary to add retention aids to the pulp suspension before the filtration process. The retention aid promotes the flocculation of fillers and the adsorption of flocs on the network of cellulose fibers (Blanco et al 2005(Blanco et al , 2009. Additionally, most retention aids improve the dewatering of fibers and fillers by decreasing the polarity and specific surface area.…”

Section: Introductionmentioning

confidence: 99%

The Retention and Drainage Behavior of Cross-linked Gelatin with Glutaraldehyde in a Papermaking System

You¹,

Sun²,

Cui³

et al. 2016

BioResources

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A type of novel retention aid, cross-linked gelatin, was prepared using lowgrade industrial gelatin as the raw material and glutaraldehyde as the crosslinking agent. The structure of cross-linked gelatin was characterized according to the crosslinking degree, isoelectric point, Fourier transform infrared spectroscopy, and ultraviolet-visible spectroscopy. The results indicated that the crosslinking reaction was successfully performed between the primary amine group of gelatin and the aldehyde group of glutaraldehyde, resulting in the formation of a Schiff base structure. The retention test showed that the addition of cross-linked gelatin remarkably improved the retention of filler. This effect was mainly attributed to the fact that cross-linked gelatin, with a high molecular weight and highly branched structure, exhibited favorable bridging flocculation and induced filler aggregation into the flocs, which were retained in the paper sheet. The drainage test showed that the cross-linked gelatin exhibited a poor drainage effect, which was attributed to the synergic effects of excellent hydrophilicity, film forming property, and sealing property.

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“…The wastewater pH of iron ore is more than 9, so physicochemical treatment of iron wastewater from a certain degree is rather difficult [9]. At present, the common methods of treatment of wastewater from flotation are acid-alkali neutralization [10,11], precipitation, coagulation, and sedimentation [12][13][14][15], chemical oxidation degradation [16], constructed wetland [17][18][19], ion exchange method [20], adsorption method [21,22], and biological method [23,24]. However, the single method above cannot completely clear wastewater pollution with harsh operating conditions.…”

Section: Introductionmentioning

confidence: 99%

Treatment and Recycling of the Process Water in Iron Ore Flotation of Yuanjiacun Iron Mine

Wen-li

2017

Journal of Chemistry

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Coagulating sedimentation and oxidation treatment of process water in iron ore flotation of Yuanjiacun iron mine had been studied. The process water of this mine carried residual polyacrylamide (PAM), poly(diallyldimethylammonium chloride) (PDADMAC), and Ca 2+ from the flotation and caused decrease of the iron flotation recovery or grade of the concentrate. The studies on highintensity magnetic separation (HIMS) tailings for coagulating sedimentation showed that the settling performance of coagulant (named CYH) was better than that of PDADMAC. The analyses of FTIR spectra and zeta potential demonstrated that CYH is adsorbed mainly through electrostatic attraction onto HIMS tailings. Sodium hypochlorite was adopted to oxidize the residual organics in tailings wastewater. When sodium hypochlorite is at the dosage of 1.0 g/L, reaction temperature is of 20 ∘ C, and reaction time is of 30 minutes, the removal rates of PAM, COD, and Ca 2+ were 90.48%, 83.97%, and 85.00%, respectively. Bench-scale flotation studies on the treated tailings wastewater indicated that the iron recovery and grade of concentrate were close to those of freshwater.

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Polymeric Branched Flocculant Effect on the Flocculation Process of Pulp Suspensions in the Papermaking Industry

Cited by 36 publications

References 20 publications

Water Soluble Polymer Flocculants: Synthesis, Characterization, and Performance Assessment

Water Soluble Polymer Flocculants: Synthesis, Characterization, and Performance Assessment

The Retention and Drainage Behavior of Cross-linked Gelatin with Glutaraldehyde in a Papermaking System

Treatment and Recycling of the Process Water in Iron Ore Flotation of Yuanjiacun Iron Mine

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