Innovative ceramic hollow fiber membranes for recycling/reuse of oilfield produced water

Ebrahimi, Mehrdad; Kerker, Steffen; Daume, Sven; Geile, Morgan; Ehlen, Frank; Unger, Ina; Schütz, Steffen; Czermak, Peter

doi:10.1080/19443994.2014.947780

Cited by 25 publications

(18 citation statements)

References 32 publications

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“…The membranes are characterized by high chemical and thermal stability as well as a high specific membrane surface. Further information regarding the production process of the membranes are given by Ebrahimi et al 32 . Pore size distributions are measured by capillary flow porometry using Galwick (c 5 15.9 mN/m) as wetting liquid.…”

Section: Experimental Materialsmentioning

confidence: 99%

New insights into sodium alginate fouling of ceramic hollow fiber membranes by NMR imaging

et al. 2016

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Ceramic hollow fiber membranes are investigated with respect to the fouling behavior. Constant pressure dead-end filtration experiments have been performed using alginate as model substance for extracellular polymeric substances. In addition to the evaluation of the filtration data using conventional cake filtration model, nuclear magnetic resonance imaging (MRI) was used to elucidate the influence of Ca 21 on the fouling layer structure for alginate filtration within ceramic hollow fiber membranes. To visualize the alginate layers inside the opaque ceramic hollow fiber membranes by means of MRI, specific contrast agents were applied. Supplementary to multi slice multi echo imaging, flow velocity measurements were performed to gain more insight into the hydrodynamics in the fouled membranes. MRI reveals the structure of the alginate layers with the finding that the addition of Ca 21 to the alginate feed solution promotes the formation of a dense alginate gel layer on the membrane's surface.

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Section: Experimental Materialsmentioning

confidence: 99%

New insights into sodium alginate fouling of ceramic hollow fiber membranes by NMR imaging

et al. 2016

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“…Aufbauend auf den langjährigen Erfahrungen zur Aufreinigung von mit Öl kontaminierten industriellen Produktionswässern mittels Membranverfahren , soll der Einsatz dieser Technologie zur Abtrennung von Wasser‐in‐Öl untersucht werden und ein alternatives Konzept zur effizienten Abtrennung entwickelt werden. Zudem wurde im Rahmen dieser Forschungsarbeit neben den Untersuchungen zur Entwicklung eines Membranverfahrens in Zusammenarbeit mit dem Industriepartner an der Entwicklung eines innovativen Wasser‐in‐Öl‐Online‐Sensors gearbeitet.…”

Section: Introductionunclassified

Efficient Separation of Water from Diesel Fuel via Membrane Technology and Online Monitoring

Ebrahimi

Finger

Schmitz

et al. 2019

Chemie Ingenieur Technik

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Die Abtrennung von Wasser aus Dieselkraftstoff ist aus sicherheitstechnischen, ökologischen sowie ökonomischen Gründen sehr wichtig, da es andernfalls u. a. zu einer schlechteren Verbrennungseffizienz und Motorproblemen kommen kann. Zudem lässt sich aus Ultra‐low‐sulfur‐Diesel (ULSD) das freie Wasser mit den klassischen Abscheidesystemen nur unzureichend abtrennen. Zur Lösung dieses Problems wurde ein Membranverfahren mit unterschiedlichen organischen/anorganischen Membranen für die selektive Abtrennung von Wassertropfen aus ULSD sowie ein innovativer Wasser‐in‐Öl‐Online‐Sensor entwickelt.

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“…Ceramic membranes were preferred in these studies [91,92,96] due to their advantages over polymeric membranes, particularly their greater chemical and thermal stability which allows the filtration of acids, bases, solvents and hot feeds, and allows them to survive the harsh cleaning conditions that are often necessary to restore membrane permeability. Ceramic membranes also maintain physical stability during the filtration of abrasive media and generally last longer than polymeric membranes [99,100].…”

Section: Applications Of Enzymatic Lignin Degradationmentioning

confidence: 99%

“…Therefore, the membrane-based fractionation of reaction mixtures from thermochemical lignin degradation processes could be used to separate non-degraded lignin from valuable mono-aromatic compounds [149]. The key advantages of ceramic membranes include their chemical and thermal stability, which allow the filtration of acids, bases, solvents and hot feeds, and make the membranes resistant to the harsh cleaning conditions that may be necessary to restore permeability [99,100]. These properties match the requirements of filtration processes involving reaction mixtures from thermochemical degradation, including extreme pH and the presence of harsh solvents.…”

Section: Separation Technology Based On Ceramic Membranesmentioning

confidence: 99%

Lignin Degradation Processes and the Purification of Valuable Products

Schoenherr¹,

Ebrahimi²,

Czermak³

2018

Lignin - Trends and Applications

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Lignin is a heterogeneous, phenolic and polydisperse biopolymer which resists degradation due to its aromatic and highly branched structure. Lignin is the most abundant renewable source of aromatic molecules on earth. The valorization of lignin could therefore provide a sustainable alternative to petroleum refineries for the production of valuable aromatic compounds. Even so, paper mills and lignocellulose feedstock biorefineries treat lignin largely as a waste product. In paper mills, 98% of technical lignin is incinerated for internal energy recovery while only 2% is used commercially (e.g. for the production of aromatics such as vanillin). The reasons for the underutilization of lignin include its recalcitrance to degradation and the challenge of separating mixtures of numerous degradation products. The successful valorization of lignin in the future thus depends on a broad understanding of biological and technical degradation processes, and the implementation of efficient product purification strategies. This article describes enzymatic, photocatalytic and thermochemical lignin degradation processes and considers purification methods for valuable lignin-derived degradation products. We focus on the potential of membrane-based separation technology, including data from our own recent research.

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Innovative ceramic hollow fiber membranes for recycling/reuse of oilfield produced water

Cited by 25 publications

References 32 publications

New insights into sodium alginate fouling of ceramic hollow fiber membranes by NMR imaging

New insights into sodium alginate fouling of ceramic hollow fiber membranes by NMR imaging

Efficient Separation of Water from Diesel Fuel via Membrane Technology and Online Monitoring

Lignin Degradation Processes and the Purification of Valuable Products

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