Characterization of commercial RO membranes for the concentration of ammonia converted to ammonium sulfate from anaerobic digesters

Carter, D.; Rose, Laili Che; Awobusuyi, T.; Gauthier, Michel G.; Tezel, F. Handan; Kruczek, Boguslaw

doi:10.1016/j.desal.2015.03.040

Cited by 18 publications

(9 citation statements)

References 20 publications

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“…On the other hand, the solution‐diffusion model is not well followed by the solute, which displays a permeability that increases with the applied pressure. This confirms the findings previously reported in the literature for ammonium sulfate: 37 that the solute tends to be transported convectively along with the solvent.…”

Section: Resultssupporting

confidence: 92%

“…Both the behavior and the values in Fig. 5 are in full agreement with those reported in the literature for RO of ammonium sulfate solutions 37 . In particular, the findings reported here confirm that the solution‐diffusion model is well followed by the solvent, with values of permeability independent of pressure for water fluxes at least 20% below the maximum value.…”

Section: Resultssupporting

confidence: 90%

“…Straight‐line fitting of the experimental data reported in Fig. 5(a) gives an average water permeability of 1.24 L m –2 h bar, which is in line with previous results reported in the literature for other RO membranes 37,38 . In Fig.…”

Section: Resultssupporting

confidence: 89%

“…5(a) gives an average water permeability of 1.24 L m -2 h bar, which is in line with previous results reported in the literature for other RO membranes. 37,38 In Fig. 5(a), the straight-line fitting of the experimental data intercepts the x-coordinate at a pressure of 2.2 bar, which is the osmotic pressure.…”

Section: Resultsmentioning

confidence: 99%

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Experimental study of a reverse osmosis pilot plant for reuse of refinery wastewater

Costamagna

Rosellini

Lavarone

et al. 2021

J of Chemical Tech & Biotech

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BACKGROUND The possibility of reusing treated refinery wastewater in the cooling water system (CWS) of the refinery itself is investigated. The contaminant levels in the treated wastewater typically fluctuate around or slightly above the threshold values for recycling to the CWS and this motivates the need for an additional purification unit. To this end, the performance of reverse osmosis (RO) is experimentally investigated through a flat‐sheet RO pilot plant installed directly in the refinery (on the treated wastewater streamline). RESULTS In the pilot plant, two different RO membranes are tested: seawater (SWM) and brackish water (BWM) membranes. In both cases, the permeate water at the outlet of the RO pilot plant had conductivity below 100 μS cm–1, total hardness (TH) below 8 ppm, chemical oxygen demand (COD) below 45 ppm, Fe below 0.04 ppm, and total ammonia nitrogen (TAN) below 1.1 ppm. The concentration of hydrocarbons (HCs) is a few ppm in the treated wastewater both at the inlet of the RO pilot plant and in the RO permeate. All these data are well below the thresholds for reuse in the CWS. The results were stable and no evidence of degradation was found over the experimentation period (3 days and 6 days, respectively, for the SWMs and the BWMs). CONCLUSION The RO permeate water can be reused in the CWS of the refinery. The proposed reuse strategy is expected to make a significant reduction (20–25 t h–1) in refinery primary water withdrawal possible. © 2021 The Authors. Journal of Chemical Technology and Biotechnology published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry (SCI).

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Section: Resultssupporting

confidence: 92%

Section: Resultssupporting

confidence: 90%

Section: Resultssupporting

confidence: 89%

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Experimental study of a reverse osmosis pilot plant for reuse of refinery wastewater

Costamagna

Rosellini

Lavarone

et al. 2021

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

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“…One continuous concern observing the research activities regarding flux decline during (HP)RO turned out to be membrane compaction as a crucial effect of high operating pressures . Sidelining the membrane itself and its materials, the HPRO SWE construction as a whole system of interacting components (membrane envelopes and different spacers) has hardly gained any attention in published works yet.…”

Section: Theoretical Backgroundmentioning

confidence: 99%

Influence of Membrane Intrusion on Permeate‐Sided Pressure Drop During High‐Pressure Reverse Osmosis

Kleffner

Braun

Antonyuk

2019

Chemie Ingenieur Technik

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By replacing thermal concentration processes, high-pressure reverse osmosis has the potential to contribute to cost and energy savings regarding concepts for industrial water reuse. To provide a better understanding of the spiral-wound element behavior during high-pressure operation, this study focusses on the investigation of their performance by scrutinizing the crucial effect of the permeate-sided pressure drop induced by membrane-spacer interactions. The experiments show a considerable influence of membrane intrusion on the element performance with a strong dependence on the feed pressure.

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TEMPO‐Oxidized Cellulose Nanofibers: A Renewable Nanomaterial for Environmental and Energy Applications

Liu

Low

Xie

et al. 2021

Adv Materials Technologies

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TEMPO (2,2,6,6‐tetramethylpiperidine‐1‐oxyl radical)‐mediated oxidized cellulose nanofibers (TOCNFs), which are derived from abundantly available wood biomass, possess uniform and ultrafine diameters of 3–10 nm and high aspect ratios, and are functionalized with carboxyl groups. The fabrication process of TOCNFs is more environmentally friendly than that of other types of cellulose, such as microfibrillated cellulose (MFC) and cellulose nanocrystals (CNCs), and TOCNFs possess a more uniform and ultrafine diameter. In recent years, TOCNF‐based adsorbents, nanocomposites, and membranes have been studied extensively in various fields, such as environmental remediation, energy, and smart materials. This review summarizes the recent advances in the applications of TOCNFs in the abovementioned fields. In particular, the preparation, adsorption ability, and removal efficiency of TOCNF‐based absorbents, separation performance of various kinds of TOCNF‐based membranes, wide applications of TOCNFs in energy storage and conversion, and TOCNF‐based smart materials are discussed. The beneficial role of TOCNFs in the abovementioned applications is highlighted, including their low environmental impact, high aspect ratio, high strength, ability to be functionalized, and renewability. It is believed that this timely review will facilitate further research on the innovation and applications of TOCNFs in fields such as environmental remediation, energy, and smart materials.

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Characterization of commercial RO membranes for the concentration of ammonia converted to ammonium sulfate from anaerobic digesters

Cited by 18 publications

References 20 publications

Experimental study of a reverse osmosis pilot plant for reuse of refinery wastewater

Experimental study of a reverse osmosis pilot plant for reuse of refinery wastewater

Influence of Membrane Intrusion on Permeate‐Sided Pressure Drop During High‐Pressure Reverse Osmosis

TEMPO‐Oxidized Cellulose Nanofibers: A Renewable Nanomaterial for Environmental and Energy Applications

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