Poly(dimethylamine-co-epichlorohydrin) as an alternative to alum for the demulsification of commercial dishwasher wastewater

Wu, Wanpeng; Palmarin, Matthew J.; Young, Stephanie

doi:10.1016/j.seppur.2017.11.051

Cited by 15 publications

(6 citation statements)

References 24 publications

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“…14 Only wastewater with low oil content can be removed, it is easy to be blocked, and the cost is high; the biological treatment of oily wastewater has a long residence time and a large area, and the treatment effect on high-concentration oily wastewater is not ideal. 15,16 Ultrasonic wave is a new treatment method of demul-sication and degreasing; however, the technology is not sufficiently developed, the treatment effect on high-concentration emulsied oil wastewater is not ideal, it has not been widely used, and its processing cost is high. 17 As an efficient chemical pretreatment method, the coagulation method can effectively remove slicks, emulsied oils, suspended solids, COD, and turbidity in oily wastewater.…”

Section: Introductionmentioning

confidence: 99%

Effective treatment of emulsified oil wastewater by the coagulation–flotation process

You

Zhang

et al. 2018

RSC Adv.

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Section: Introductionmentioning

confidence: 99%

Effective treatment of emulsified oil wastewater by the coagulation–flotation process

You

Zhang

et al. 2018

RSC Adv.

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“…NZ samples were modified with Kemira Superfloc C-581 ® (SC-581), a polycation with high relative molecular weight, melting point at −18 • C, and a density of 1.14-1.18 g mL −1 at 25 • C [34,35,42]. Other reagents are KCl (99.0%, Merck), HCl (37%, Merck), NaOH (>98% Aldrich), ethanol (96% Merck), NaCl (>99% Aldrich), glycerol (>99.5% Aldrich) and BaCl 2 (99.99% Aldrich).…”

Section: Methodsmentioning

confidence: 99%

Sulfate Kinetics and Adsorption Studies on a Zeolite/Polyammonium Cation Composite for Environmental Remediation

et al. 2021

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Sulfide mineral mining produces highly sulfate-contaminated wastewater which needs to be treated before disposal. A composite material was made from natural zeolite (NZ) and Superfloc® SC-581, a polyammonium cationic polymer. The resulting modified zeolite (MZ) demonstrated improved capacity for sulfate abatement from wastewater compared to NZ. Above pH 4.0, MZ retained positive surface charge while NZ remained negative. The effect of the ionic strength on the adsorption process was evaluated. Sulfate adsorption capacity was assessed and revealed MZ to be superior to NZ in all cases. Adsorption kinetics reached equilibrium after 10–12 h, with MZ adsorption being twice that of NZ; data fitted a pseudo-second order kinetic model. Adsorption isotherms reflected the high capacity of MZ for sulfate adsorption with maximum of 3.1 mg g−1, while NZ only achieved 1.5 mg g−1. The process corresponds to heterogeneous partially reversible adsorption of ionic species over the solid adsorbent. Langmuir–Freundlich parameters revealed that adsorption over MZ corresponds to an interaction eight times stronger than that on NZ. The sulfate adsorption pattern changes with ionic strength. Taken together, the composite formed between natural zeolite and polyammonium represents an adsorbent that maintains the adsorption capacity of zeolite and proves suitable for anionic species removal. Further prospect considers the testing of the composite with other anionic pollutants (arsenate, phosphate, perchlorate, etc.)

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“…Eight cationic polyelectrolytes have been evaluated for the treatment of strong oily wastewater from commercial dishwashers [29]. They could destabilize colloids at much smaller doses than the usually employed alum.…”

Section: Oil and Grease Removalmentioning

confidence: 99%

The Use of Polymers in the Flotation Treatment of Wastewater

Bolto

Xie

2019

Processes

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The use of flotation for the treatment of wastewaters in general, but especially for the removal of oil, grease, general organic matter, and suspended solids, is well established as a low energy process. Polyelectrolytes (PEs) can enhance performance without adding to the solids load that occurs with inorganic additives such as alum. The bridging of pollutants and the attachment of the resulting aggregates to the air-water interface can be effectively carried out with most wastewaters. Hydrophobic modification of the PEs can be useful for difficult species. It should be applied to the flotation of polyfluoroalkyl substances, for example, as they are not amenable to economical conventional treatment. Similarly, the removal of microplastic particles from sewage effluents by flotation could be enhanced.

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Poly(dimethylamine-co-epichlorohydrin) as an alternative to alum for the demulsification of commercial dishwasher wastewater

Cited by 15 publications

References 24 publications

Effective treatment of emulsified oil wastewater by the coagulation–flotation process

Effective treatment of emulsified oil wastewater by the coagulation–flotation process

Sulfate Kinetics and Adsorption Studies on a Zeolite/Polyammonium Cation Composite for Environmental Remediation

The Use of Polymers in the Flotation Treatment of Wastewater

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