Publications
171 results found
Lopez-Olvera A, Antonio Zarate J, Martinez-Ahumada E, et al., 2021, SO<sub>2</sub> Capture by Two Aluminum-Based MOFs: Rigid-like MIL-53(Al)-TDC <i>versus</i> Breathing MIL-53(Al)-BDC, ACS APPLIED MATERIALS & INTERFACES, Vol: 13, Pages: 39363-39370, ISSN: 1944-8244
- Author Web Link
- Cite
- Citations: 25
Lyu P, Wright AM, Lopez-Olvera A, et al., 2021, Ammonia Capture via an Unconventional Reversible Guest-Induced Metal-Linker Bond Dynamics in a Highly Stable Metal-Organic Framework, CHEMISTRY OF MATERIALS, Vol: 33, Pages: 6186-6192, ISSN: 0897-4756
- Author Web Link
- Cite
- Citations: 20
Cavazos PAS, Diaz-Ramirez ML, Hunter-Sellars E, et al., 2021, Fluorinated MIL-101 for carbon capture utilisation and storage: uptake and diffusion studies under relevant industrial conditions, RSC Advances: an international journal to further the chemical sciences, Vol: 11, Pages: 13304-13310, ISSN: 2046-2069
Carbon capture utilisation and storage (CCUS) using solid sorbents such as zeolites, activated carbon and Metal–Organic Frameworks (MOFs) could facilitate the reduction of anthropogenic CO2 concentration. Developing efficient and stable adsorbents for CO2 capture as well as understanding their transport diffusion limitations for CO2 utilisation plays a crucial role in CCUS technology development. However, experimental data available on CO2 capture and diffusion under relevant industrial conditions is very limited, particularly for MOFs. In this study we explore the use of a gravimetric Dynamic Vapour Sorption (DVS) instrument to measure low concentration CO2 uptake and adsorption kinetics on a novel partially fluorinated MIL-101(Cr) saturated with different water vapour concentrations, at ambient pressure and temperature. Results show that up to water P/P0 = 0.15 the total CO2 uptake of the modified material improves and that the introduction of small amounts of water enhances the diffusion of CO2. MIL-101(Cr)-4F(1%) proved to be a stable material under moist conditions compared to other industrial MOFs, allowing facile regeneration under relevant industrial conditions.
Hakim Mohd Azmi L, Cherukupally P, Hunter-Sellars E, et al., 2021, Polydimethyl siloxane/MIL-101 Composites for Enhanced Toluene Adsorption in the Presence of Humidity
<jats:p><div><b>ABSTRACT</b> <br></div><div><br></div><div>Competitionbetween atmospheric moisture and volatile organic compounds (VOCs) for anadsorbent’s sites can significantly impact its VOC removal efficiency. Thedevelopment of moisture-tolerant adsorbents is essential to address this issue.A vapor phase deposition process using polydimethylsiloxane (PDMS) has createda hydrophobic form of the highly porous, normally hydrophilic, MOF MIL-101.After optimizing the PDMS vapor deposition time and molecular weights,hydrophobicity index calculations verified the improved hydrophobicity of thecoated MOF (MIL-PDMS-Sigma-0.25) over its pristine form. The surface area, porevolume as well as single component vapor adsorption of water and toluenecapacities were also preserved, resulting to similar performance to MIL-101.Toluene-water vapor co-adsorption experiments were conducted at 40% RH usingtwo toluene concentrations: 0.5% P/P<sub>0</sub> and 10% P/P<sub>0</sub>,mimicking environmental VOC and industrial concentrations, respectively. At0.5% P/P<sub>0</sub>, MIL-PDMS-Sigma-0.25 exhibited 60% higher adsorptioncapacity and twice the rate of toluene capture relative to pristine MIL-101, aswell as a 3-fold higher toluene uptake relative to a commercial activatedcarbon. Preliminary adsorbent regeneration experiments confirm the stabilityand performance of MIL-PDMS-Sigma-0.25. Using a simple vapor phasemodification, this new MOF-composite material offers superior competitivetoluene vapor uptake in humidified real-world conditions at VOC concentrations. </div></jats:p>
Hakim Mohd Azmi L, Cherukupally P, Hunter-Sellars E, et al., 2021, Polydimethyl siloxane/MIL-101 Composites for Enhanced Toluene Adsorption in the Presence of Humidity
<jats:p><jats:bold>ABSTRACT</jats:bold> </jats:p><jats:p /><jats:p> Competition between atmospheric moisture and volatile organic compounds (VOCs) for an adsorbent’s sites can significantly impact its VOC removal efficiency. The development of moisture-tolerant adsorbents is essential to address this issue. A vapor phase deposition process using polydimethylsiloxane (PDMS) has created a hydrophobic form of the highly porous, normally hydrophilic, MOF MIL-101. After optimizing the PDMS vapor deposition time and molecular weights, hydrophobicity index calculations verified the improved hydrophobicity of the coated MOF (MIL-PDMS-Sigma-0.25) over its pristine form. The surface area, pore volume as well as single component vapor adsorption of water and toluene capacities were also preserved, resulting to similar performance to MIL-101. Toluene-water vapor co-adsorption experiments were conducted at 40% RH using two toluene concentrations: 0.5% P/P<jats:sub>0</jats:sub> and 10% P/P<jats:sub>0</jats:sub>, mimicking environmental VOC and industrial concentrations, respectively. At 0.5% P/P<jats:sub>0</jats:sub>, MIL-PDMS-Sigma-0.25 exhibited 60% higher adsorption capacity and twice the rate of toluene capture relative to pristine MIL-101, as well as a 3-fold higher toluene uptake relative to a commercial activated carbon. Preliminary adsorbent regeneration experiments confirm the stability and performance of MIL-PDMS-Sigma-0.25. Using a simple vapor phase modification, this new MOF-composite material offers superior competitive toluene vapor uptake in humidified real-world conditions at VOC concentrations.</jats:p>
Cherukupally P, Sun W, Williams DR, et al., 2021, Wax-wetting sponges for oil droplets recovery from frigid waters, Science Advances, Vol: 7, ISSN: 2375-2548
Energy-efficient recovery of oil droplets from ice-cold water, such as oil sands tailings, marine, and arctic oil spills, is challenging. In particular, due to paraffin wax crystallization at low temperatures, the crude oil exhibits high viscosity, making it difficult to collect using simple solutions like sponges. Here, we report a wax-wetting sponge designed by conforming to the thermoresponsive microstructure of crude oil droplets. To address paraffin wax crystallization, we designed the sponge by coating a polyester polyurethane substrate with nanosilicon functionalized with paraffin-like octadecyl ligands. The wax-wetting sponge can adsorb oil droplets from wastewater between 5° and 40°C with 90 to 99% removal efficacy for 10 cycles. Also, upon rinsing with heptol, the adsorbed oil is released within seconds. The proposed approach of sponges designed to conform with the temperature-dependent microstructure of the crude oils could enable cold water technologies and improve circular economy metrics in the oil industry.
Rivera-Almazo M, Diaz-Ramirez ML, Hernandez-Esparza R, et al., 2021, Identification of the preferential CO and SO<sub>2</sub> adsorption sites within NOTT-401, PHYSICAL CHEMISTRY CHEMICAL PHYSICS, Vol: 23, Pages: 1454-1463, ISSN: 1463-9076
- Author Web Link
- Cite
- Citations: 3
Mohd Azmi LH, Williams D, Ladewig B, 2021, Polymer-assisted modification of metal-organic framework MIL-96 (Al): influence of HPAM concentration on particle size, crystal morphology and removal of harmful environmental pollutant PFOA, Chemosphere, Vol: 262, Pages: 1-9, ISSN: 0045-6535
A new synthesis method was developed to prepare an aluminum-based metal organic framework (MIL-96) with a larger particle size and different crystal habits. A low cost and water-soluble polymer, hydrolyzed polyacrylamide (HPAM), was added in varying quantities into the synthesis reaction to achieve >200% particle size enlargement with controlled crystal morphology. The modified adsorbent, MIL-96-RHPAM2, was systematically characterized by SEM, XRD, FTIR, BET and TGA-MS. Using activated carbon (AC) as a reference adsorbent, the effectiveness of MIL-96-RHPAM2 for perfluorooctanoic acid (PFOA) removal from water was examined. The study confirms stable morphology of hydrated MIL-96-RHPAM2 particles as well as a superior PFOA adsorption capacity (340 mg/g) despite its lower surface area, relative to standard MIL-96. MIL-96-RHPAM2 suffers from slow adsorption kinetics as the modification significantly blocks pore access. The strong adsorption of PFOA by MIL-96-RHPAM2 was associated with the formation of electrostatic bonds between the anionic carboxylate of PFOA and the amine functionality present in the HPAM backbone. Thus, the strongly held PFOA molecules in the pores of MIL-96-RHPAM2 were not easily desorbed even after eluted with a high ionic strength solvent (500 mM NaCl). Nevertheless, this simple HPAM addition strategy can still chart promising pathways to impart judicious control over adsorbent particle size and crystal shapes while the introduction of amine functionality onto the surface chemistry is simultaneously useful for enhanced PFOA removal from contaminated aqueous systems.
Hunter-Sellars E, Saenz-Cavazos PA, Houghton AR, et al., 2021, Sol-Gel Synthesis of High-Density Zeolitic Imidazolate Framework Monoliths via Ligand Assisted Methods: Exceptional Porosity, Hydrophobicity, and Applications in Vapor Adsorption, ADVANCED FUNCTIONAL MATERIALS, Vol: 31, ISSN: 1616-301X
- Author Web Link
- Cite
- Citations: 29
Grape ES, Gabriel Flores J, Hidalgo T, et al., 2020, A Robust and Biocompatible Bismuth Ellagate MOF Synthesized Under Green Ambient Conditions, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, Vol: 142, Pages: 16795-16804, ISSN: 0002-7863
- Author Web Link
- Cite
- Citations: 90
Gorla S, Diaz-Ramirez ML, Abeynayake NS, et al., 2020, Functionalized NU-1000 with an Iridium Organometallic Fragment: SO<sub>2</sub> Capture Enhancement, ACS APPLIED MATERIALS & INTERFACES, Vol: 12, Pages: 41758-41764, ISSN: 1944-8244
- Author Web Link
- Cite
- Citations: 18
Zárate JA, Domínguez-Ojeda E, Sánchez-González E, et al., 2020, Reversible and efficient SO2 capture by a chemically stable MOF CAU-10: experiments and simulations., Dalton Trans, Vol: 49, Pages: 9203-9207
The adsorption of sulphur dioxide (SO2) in CAU-10 is obtained with the use of advanced experimental and computational tools to gain insight into the molecular mechanisms responsible for the adsorption of SO2. It is shown that the adsorption by CAU-10 is highly energy efficient and that van der Waals interactions are the driving force that controls adsorption in this system.
Martinez-Ahumada E, Diaz-Ramirez ML, Lara-Garcia HA, et al., 2020, High and reversible SO<sub>2</sub> capture by a chemically stable Cr(III)-based MOF, JOURNAL OF MATERIALS CHEMISTRY A, Vol: 8, Pages: 11515-11520, ISSN: 2050-7488
- Author Web Link
- Cite
- Citations: 53
Mohd Azmi LH, Williams D, Ladewig B, 2020, Can metal organic frameworks outperform adsorptive removal of harmful phenolic compound 2-chlorophenol by activated carbon?, Chemical Engineering Research and Design, Vol: 158, Pages: 102-113, ISSN: 0263-8762
Removal of persistent organic compounds from aqueous solutions is generally achieved using adsorbent like activated carbon (AC) but it suffers from limited adsorption capacity due to low surface area. This paper describes a pioneering work on the adsorption of an organic pollutant, 2-chlorophenol (2-CP) by two MOFs with high surface area and water stability; MIL-101 and its amino-derivative, MIL-101-NH2. Although MOFs have higher surface area than AC, the latter was proven better having the highest equilibrium 2-CP uptake (345 mg g−1), followed by MIL-101 (121 mg g−1) and MIL-101-NH2 (84 mg g−1). Used MIL-101 could be easily regenerated multiple times by washing with ethanol and even showed improved adsorption capacity after each washing cycle. These results can open the doors to meticulous adsorbent selection for treating 2-CP-contaminated water.
Hakim Mohd Azmi L, Williams DR, Ladewig BP, 2020, Polymer-Assisted Modification of Metal-Organic Framework MIL-96 (Al): Influence on Particle Size, Crystal Morphology and Perfluorooctanoic Acid (PFOA) Removal
<jats:p><jats:bold>Abstract</jats:bold>A new synthesis method was developed to prepare an aluminum-based metal organic framework (MIL-96) with a larger particle size and different crystal habits. A low cost and water-soluble polymer, hydrolyzed polyacrylamide (HPAM), was added in varying quantities into the synthesis reaction to achieve >200% particle size enlargement with controlled crystal morphology. The modified adsorbent, MIL-96-RHPAM2, was systematically characterized by SEM, XRD, FTIR, BET and TGA-MS. Using activated carbon (AC) as a reference adsorbent, the effectiveness of MIL-96-RHPAM2 for perfluorooctanoic acid (PFOA) removal from water was examined. The study confirms stable morphology of hydrated MIL-96-RHPAM2 particles as well as a superior PFOA adsorption capacity (340 mg/g) despite its lower surface area, relative to standard MIL-96. MIL-96-RHPAM2 suffers from slow adsorption kinetics as the modification significantly blocks pore access. The strong adsorption of PFOA by MIL-96-RHPAM2 was associated with the formation of electrostatic bonds between the anionic carboxylate of PFOA and the amine functionality present in the HPAM backbone. Thus, the strongly held PFOA molecules in the pores of MIL-96-RHPAM2 were not easily desorbed even after eluted with a high ionic strength solvent (500 mM NaCl). Nevertheless, this simple HPAM addition strategy can still chart promising pathways to impart judicious control over adsorbent particle size and crystal shapes while the introduction of amine functionality onto the surface chemistry is simultaneously useful for enhanced PFOA removal from contaminated aqueous systems.</jats:p><jats:p />
Hakim Mohd Azmi L, Williams DR, Ladewig BP, 2020, Polymer-Assisted Modification of Metal-Organic Framework MIL-96 (Al): Influence on Particle Size, Crystal Morphology and Perfluorooctanoic Acid (PFOA) Removal
<jats:p><div><b>Abstract</b></div><div>A new synthesis method was developed to prepare an aluminum-based metal organic framework (MIL-96) with a larger particle size and different crystal habits. A low cost and water-soluble polymer, hydrolyzed polyacrylamide (HPAM), was added in varying quantities into the synthesis reaction to achieve >200% particle size enlargement with controlled crystal morphology. The modified adsorbent, MIL-96-RHPAM2, was systematically characterized by SEM, XRD, FTIR, BET and TGA-MS. Using activated carbon (AC) as a reference adsorbent, the effectiveness of MIL-96-RHPAM2 for perfluorooctanoic acid (PFOA) removal from water was examined. The study confirms stable morphology of hydrated MIL-96-RHPAM2 particles as well as a superior PFOA adsorption capacity (340 mg/g) despite its lower surface area, relative to standard MIL-96. MIL-96-RHPAM2 suffers from slow adsorption kinetics as the modification significantly blocks pore access. The strong adsorption of PFOA by MIL-96-RHPAM2 was associated with the formation of electrostatic bonds between the anionic carboxylate of PFOA and the amine functionality present in the HPAM backbone. Thus, the strongly held PFOA molecules in the pores of MIL-96-RHPAM2 were not easily desorbed even after eluted with a high ionic strength solvent (500 mM NaCl). Nevertheless, this simple HPAM addition strategy can still chart promising pathways to impart judicious control over adsorbent particle size and crystal shapes while the introduction of amine functionality onto the surface chemistry is simultaneously useful for enhanced PFOA removal from contaminated aqueous systems.<br></div></jats:p>
Hunter-Sellars E, Tee JJ, Parkin IP, et al., 2020, Adsorption of volatile organic compounds by industrial porous materials: Impact of relative humidity, MICROPOROUS AND MESOPOROUS MATERIALS, Vol: 298, ISSN: 1387-1811
- Author Web Link
- Cite
- Citations: 40
Ngeow YW, Williams DR, Chapman A, et al., 2020, Surface energy mapping of modified silica using IGC technique at inite dilution, ACS Omega, Vol: 5, Pages: 10266-10275, ISSN: 2470-1343
The reinforcing silica filler, which can be more than 40% of an elastomer composite, plays a key role to achieve the desired mechanical properties in elastomer vulcanizates. However, the highly hydrophilic nature of silica surface causes silica particle aggregation. It remained a challenge for many tire manufacturers when using silica-filled elastomer compounds. Here, the silica surface energy changes when the surface is modified with coupling or noncoupling silanes; coupling silanes can covalently bond the silica to the elastomers. The surface energy of silica was determined using inverse gas chromatography (IGC) at finite dilution (FD-IGC) and found to be reduced by up to 50% when the silica surface was silanized. The spatial distribution of silica aggregates within the tire matrix is determined by transmission electron microscopy (TEM) and a direct correlation between aggregate size (silica microdispersion) and work of cohesion from IGC is reported, highlighting surface energy and work of cohesion being excellent indicators of the degree of dispersion of silica aggregates.
Hakim Mohd Azmi L, Williams DR, Ladewig BP, 2020, Polymer-Assisted Modification of Metal-Organic Framework MIL-96 (Al): Influence on Particle Size, Crystal Morphology and Perfluorooctanoic Acid (PFOA) Removal
<jats:p><jats:bold>Abstract</jats:bold>A new synthesis method was developed to prepare an aluminum-based metal organic framework (MIL-96) with a larger particle size and different crystal habits. A low cost and water-soluble polymer, hydrolyzed polyacrylamide (HPAM), was added in varying quantities into the synthesis reaction to achieve >200% particle size enlargement with controlled crystal morphology. The modified adsorbent, MIL-96-RHPAM2, was systematically characterized by SEM, XRD, FTIR, BET and TGA-MS. Using activated carbon (AC) as a reference adsorbent, the effectiveness of MIL-96-RHPAM2 for perfluorooctanoic acid (PFOA) removal from water was examined. The study confirms stable morphology of hydrated MIL-96-RHPAM2 particles as well as a superior PFOA adsorption capacity (340 mg/g) despite its lower surface area, relative to standard MIL-96. MIL-96-RHPAM2 suffers from slow adsorption kinetics as the modification significantly blocks pore access. The strong adsorption of PFOA by MIL-96-RHPAM2 was associated with the formation of electrostatic bonds between the anionic carboxylate of PFOA and the amine functionality present in the HPAM backbone. Thus, the strongly held PFOA molecules in the pores of MIL-96-RHPAM2 were not easily desorbed even after eluted with a high ionic strength solvent (500 mM NaCl). Nevertheless, this simple HPAM addition strategy can still chart promising pathways to impart judicious control over adsorbent particle size and crystal shapes while the introduction of amine functionality onto the surface chemistry is simultaneously useful for enhanced PFOA removal from contaminated aqueous systems.</jats:p><jats:p />
Martinez-Ahumada E, Lopez-Olvera A, Jancik V, et al., 2020, MOF Materials for the Capture of Highly Toxic H<sub>2</sub>S and SO<sub>2</sub>, ORGANOMETALLICS, Vol: 39, Pages: 883-915, ISSN: 0276-7333
- Author Web Link
- Cite
- Citations: 103
Duralliu A, Matejtschuk P, Stickings P, et al., 2020, The Influence of Moisture Content and Temperature on the Long-Term Storage Stability of Freeze-Dried High Concentration Immunoglobulin G (IgG), PHARMACEUTICS, Vol: 12
- Author Web Link
- Cite
- Citations: 17
Cherukupally P, Sun W, Wong APY, et al., 2020, Surface-engineered sponges for recovery of crude oil microdroplets from wastewater (vol 321, pg 784, 2019 ), NATURE SUSTAINABILITY, Vol: 3, Pages: 161-161, ISSN: 2398-9629
Mohd Azmi LH, Hunter-Sellars E, Ladewig B, et al., 2020, A case study on toluene removal by PDMS-modified metal organic frameworks compared to activated carbon.
Mohd Azmi LH, Hunter-Sellars E, Ladewig B, et al., 2020, Facile hydrophobic modification strategy on hydrophilic metal organic frameworks for improved toluene capture
Hunter-Sellars E, Sáenz Cavazos PA, Parkin IP, et al., 2020, Energy-efficient air filtration media for removal of volatile chemicals
Mohd Azmi LH, Hunter-Sellars E, Ladewig B, et al., 2020, A case study of toluene VOC removal by PDMS PDMS-modified metal organic framework adsorbent
Clean air quality is essential to the wellbeing of all living species on the planet. Chemical emissions including volatile organic compounds (VOCs) and toxic aromatic hydrocarbons contribute strongly to the urban atmospheric air pollution as they pose great harms to the environment and human health. Adsorption technology in the form of commercial air filters has commonly been used for indoor VOCs abatement. These air filtration units are either equipped withactivated carbon (AC), zeolites or hybrid materials among many others [1,2] but, these conventional technologies suffer from several limitations such as low adsorption capacity, structural amorphism and high regeneration costs [3].As the pursuit for effective sorptive technology continues, the potent roles of metal-organic frameworks (MOFs) with their high surface area, chemical and thermal stability, tailorable functionalities for enhanced adsorption and reusability can help resolve the problems [4]. Of our interest is the ability to post-synthetically modify the structures to enhanceadsorption or generate novel properties. To enable efficient VOCs removal from air, the omnipresence of moisture must first be addressed by means of a systematically developed hydrophobic surface modification. Attempted strategies to improve hydrophobic character of MOFs include functionalising the MOF with fluoro-based linkers [5], co-synthesizing them with hydrophobic materials[6] or via an interfacial assembling pathway [7]. However, most reported methods are not suitable for industrial scalability. Therefore, by using a facile modification method, we will demonstrate that rationally designed MOFs havethe upper hand for atmospheric VOCs capture over carbon-based adsorbents. Preliminary experiments indicate almost complete porosity retainment after the MOF has been modified. To assert a realistic assessment, investigations will cover the sorptive behaviour of an environmentally benign MOF alongside its hydrophobically modified ver
Cherukupally P, Sun W, Wong APY, et al., 2019, Surface-engineered sponges for recovery of crude oil microdroplets from wastewater, Nature Sustainability, Vol: 3, Pages: 136-143, ISSN: 2398-9629
In the United States, the oil industry produces over 15 billion barrels of wastewater contaminated with crude oil microdroplets annually. Current methods are ineffective for the removal of these microdroplets at the variable pH conditions commonly found in wastewater. Here, an innovative surface-engineered sponge (SEnS) that synergistically combines surface chemistry, charge and roughness, provides a solution to this problem. Over broad pH conditions, the SEnS rapidly adsorbed oil microdroplets with 95–99% removal efficiency, predominantly facilitated by Lifshitz–van der Waals forces. At the optimum pH, 92% of the oil was adsorbed within 10 min. The oil was subsequently recovered by solvent extraction under ambient conditions, and the cleaned SEnS was reused for oil microdroplets adsorption ten times. The combined efficacy and reusability can enable large-scale removal and recovery of crude oil microdroplets from wastewater.
Hakim Mohd Azmi L, Williams DR, Ladewig BP, 2019, Can Metal Organic Frameworks Outperform Adsorptive Removal of Harmful Phenolic Compound 2-Chlorophenol by Activated Carbon?
<jats:p><b>Abstract:</b> Removal of persistent organic compounds from aqueous solutions is generally achieved using adsorbent like activated carbon (AC) but it suffers from limited adsorption capacity due to low surface area. This paper describes a pioneering work on the adsorption of an organic pollutant, 2-chlorophenol (2-CP) by two MOFs with high surface area and water stability; MIL-101 and its amino-derivative, MIL-101-NH<sub>2</sub>. Although MOFs have higher surface area than AC, the latter was proven better having the highest equilibrium 2-CP uptake (345 mg.g<sup>-1</sup>), followed by MIL-101 (121 mg.g<sup>-1</sup>) and MIL-101-NH<sub>2</sub> (84 mg.g<sup>-1</sup>). Used MIL-101 could be easily regenerated multiple times by washing with ethanol and even showed improved adsorption capacity after each washing cycle. These results can open the doors to meticulous adsorbent selection for treating 2-CP-contaminated water</jats:p>
Cherukupally P, Sun W, Wong APY, et al., 2019, Adsorptive Recovery of Crude Oil Microdroplets from Wastewater Using Surface Engineered Sponges
<jats:p>In the US, the oil industry produces over 15 billion barrels of wastewater contaminated with crude oil microdroplets annually. Current technologies are unable to remove these microdroplets at different pH conditions. Herein, an innovative surface engineered sponge (SenS) was designed by combining surface chemistry, surface charge, roughness, and surface energy. Under all pH conditions, the SEnS rapidly adsorbed oil microdroplets with 95-99% removal efficiency. The adsorbed oil was recovered at ambient conditions while the cleaned SEnS was reused for five times for crude oil adsorption. Due to the process efficacy, sponge reuse, and oil recovery, this adsorptive-recovery method using SEnS demonstrates great potential for the industrial recovery of oil from wastewater.</jats:p>
Cherukupally P, Sun W, Wong APY, et al., 2019, Adsorptive Recovery of Crude Oil Microdroplets from Wastewater Using Surface Engineered Sponges
<jats:p>In the US, the oil industry produces over 15 billion barrels of wastewater contaminated with crude oil microdroplets annually. Current technologies are unable to remove these microdroplets at different pH conditions. Herein, an innovative surface engineered sponge (SenS) was designed by combining surface chemistry, surface charge, roughness, and surface energy. Under all pH conditions, the SEnS rapidly adsorbed oil microdroplets with 95-99% removal efficiency. The adsorbed oil was recovered at ambient conditions while the cleaned SEnS was reused for five times for crude oil adsorption. Due to the process efficacy, sponge reuse, and oil recovery, this adsorptive-recovery method using SEnS demonstrates great potential for the industrial recovery of oil from wastewater.</jats:p>
This data is extracted from the Web of Science and reproduced under a licence from Thomson Reuters. You may not copy or re-distribute this data in whole or in part without the written consent of the Science business of Thomson Reuters.