Polishing Step Purification of High-Strength Wastewaters by Nanofiltration and Reverse Osmosis

Zhou, Jin; Baker, Brian O.; Grimsley, Charles T.; Husson, Scott M.

doi:10.3390/membranes6010019

Cited by 8 publications

(2 citation statements)

References 14 publications

(22 reference statements)

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“…Thus, FO functions as a pretreatment for RO [ 17 ]. This energy cost was determined following the steps outlined by Zhou et al [ 18 ]. A pump efficiency of 60% was assumed.…”

Section: Resultsmentioning

confidence: 99%

Low-Energy Membrane Process for Concentration of Stick Water

Zhou

Husson

2018

Membranes

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This communication describes the application of forward osmosis (FO) to concentrate stick water, a nutrient-rich water byproduct of meat rendering operations. The objectives of the study were to carry out a set of batch FO runs in concentration mode to determine the maximum achievable stick water concentration and to perform a preliminary cost analysis for operating a FO/reverse osmosis membrane separation process for comparison to an evaporative concentration process. The study examined the roles of feed and draw solution stir rates, temperature, feed concentration, and draw solution ionic strength on flux using commercial cellulose triacetate membranes. Results show that FO could concentrate the stick water up to 45 wt %; however, concentrations above about 30 wt % would be difficult to process through conventional membrane configurations. Preliminary operating cost estimations show that the energy cost of the FO process is about 5.3% of the energy costs for a single-effect thermal evaporation process; and, assuming a 2-year membrane lifetime, the total operating cost using FO membranes was estimated to be about 23.1% of the operating cost using such a thermal evaporation process.

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“…Thus, FO functions as a pretreatment for RO [ 17 ]. This energy cost was determined following the steps outlined by Zhou et al [ 18 ]. A pump efficiency of 60% was assumed.…”

Section: Resultsmentioning

confidence: 99%

Low-Energy Membrane Process for Concentration of Stick Water

Zhou

Husson

2018

Membranes

Self Cite

View full text Add to dashboard Cite

show abstract

“…High amounts of minerals, frequently found in food wastes, have to be removed in order to obtain high protein concentrates (Gringer, et al, 2015). Membrane filtration, electro-dialysis, dialysis, diafiltration, reverse osmosis or forward osmosis are the preferential approaches for protein demineralizing (Dolors Parés, Toldrà, Saguer, & Carretero, 2014;Simon, Vandanjon, Levesque, & Bourseau, 2002;Xue, Yamamoto, & Tobino, 2016;Zhou, Baker, Grimsley, & Husson, 2016). However, all these methods present key disadvantages associated with membrane filtration, such as membrane fouling and large amounts of water required.…”

Section: Introductionmentioning

confidence: 99%