Synergistic, membrane-based hybrid separation systems

Ray, Rod; Wytcherley, Randi Wright; Newbold, David D.; McCray, Scott B.; Friesen, Dwayne T.; Brose, Dan

doi:10.1016/0376-7388(91)80047-a

Cited by 13 publications

(2 citation statements)

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“…Ray et al (12,13) proposed a hybrid process combination of pervaporation and reverse osmosis to reduce a 500-ppm phenol level of contaminated wastewater to less than a 14-ppm level. The proposed system can treat 3.785 ϫ 10 5 kg wastewater per day by combining a pervaporation unit with hydrophobic elastomeric polymeric membranes and a reverse osmosis unit with hydrophilic FT-30 spiral wound membranes (Dow Liquid Separations/Filmtech, Minneapolis, MN, Figure 3.…”

Section: Pervaporation-based Hybrid Processes For the Recovery Of Phenolmentioning

confidence: 99%

Pervaporation-Based Hybrid Processes in Treating Phenolic Wastewater: Technical Aspects and Cost Engineering

Lipnizki

Field

2001

Separation Science and Technology

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In this study, the feasibility of combining pervaporation with adsorption in a hybrid process to recover phenol from wastewater is analyzed with the technical aspects and the cost of the processes taken into account. The pervaporation unit in the hybrid process is combined with a decanter on the permeate side and an adsorption unit on the retentate side. Two modes of regeneration, steam and heat, are considered for the adsorption unit. Through comparisons of the stand-alone units with the hybrid processes, we found that hybrid processes were feasible economic alternatives. In addition to meeting the environmental standard, the hybrid processes also recovered over 98% of the phenol at a concentration of 76% (wt). Even though the cost data showed that the use of heat regeneration for the adsorption unit is the cheaper option, the integration of steam regeneration improves the phenol recovery rate to over 99%. A sensitivity analysis of the economic boundaries of the hybrid SEPARATION SCIENCE AND TECHNOLOGY, 36(15), 3311-3335 (2001) ORDER REPRINTS processes revealed that the membrane life cycle and not the membrane cost is the key cost parameter in the hybrid processes. The advantages of the hybrid process are further increased when the processes are scaled up. Overall, this study demonstrates that pervaporation-based hybrid processes that combine pervaporation, adsorption, and a decanter could be used effectively to recover phenol from industrial waste streams.

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Section: Pervaporation-based Hybrid Processes For the Recovery Of Phenolmentioning

confidence: 99%

Pervaporation-Based Hybrid Processes in Treating Phenolic Wastewater: Technical Aspects and Cost Engineering

Lipnizki

Field

2001

Separation Science and Technology

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“…Membrane technology plays an important role in hybrid processes, mainly because of the purely physical nature of the separation principle, and the modular design of membrane processes (Rautenbach and Mellis, 1995). The advantages of hybrid processes using membranes were recognized in the beginning of the 1990s, together with the notion that the flexibility of the systems can be maximized using membrane technology, because system operating conditions can be easily adjusted to accommodate changes in the feed stream or to compensate for changes that occur in the membrane over time (Ray et al, 1991). At present the use of hybrid processes has no significant technical limitations and can be easily simulated and designed (Brinkmann et al, 2003;Rautenbach et al, 1996).…”

Section: Introductionmentioning

confidence: 99%