Article
Engineering, Chemical
Somin Lee, Hee-Jun Kim, Miao Tian, Gilson Khang, Hyun-Woo Kim, Tae-Hyun Bae, Jaewoo Lee
Summary: The study focused on preventing scaling on reverse osmosis membranes by coating silk fibroin, with the coated membrane showing advantages in anti-scaling properties.
Article
Engineering, Chemical
Ruth Habte Hailemariam, June-Seck Choi, Mekdimu Mezemir Damtie, Hojung Rho, Kwang-Duck Park, Jonghun Lee, Yun Chul Woo
Summary: This study focused on improving the performance of polyamide thin film composite membranes through co-solvent-assisted interfacial polymerization. The results showed that adding co-solvent can enhance water flux performance of the membrane without sacrificing salt rejection. The study demonstrates the potential of CAIP membranes for brackish water desalination and water treatment.
Article
Engineering, Chemical
Ruth Habte Hailemariam, June-Seok Choi, Bezawit A. Getachew, Mekdimu Mezemir Damtie, Hojung Rho, Kwang-Duck Park, Jonghun Lee, Yun Chul Woo
Summary: Nanofiltration (NF) and reverse osmosis (RO) membranes have shown promise in treating fluoridated brackish water. This study evaluated the performance of a self-fabricated membrane with acetone as a co-solvent for treating fluoridated brackish water. The addition of acetone improved water flux and fluoride rejection, and the acetone-added membrane outperformed commercial RO/NF membranes in terms of flux and rejection.
Article
Engineering, Chemical
Ines Nulens, Rasheda Peters, Rhea Verbeke, Douglas M. Davenport, Cedric Van Goethem, Bart De Ketelaere, Peter Goos, Kumar Varoon Agrawal, Ivo F. J. Vankelecom
Summary: This study evaluates the influence of interfacial polymerization on the morphology and performance of polyamide thin film composite (TFC) membranes, considering varying monomer concentrations and organic phases with different physico-chemical characteristics. Two new descriptors, 'MPD supply' and 'TMC supply', are introduced to describe the synthesis-structure-performance relationship of polyamide TFC membranes. The study finds that well-performing membranes can be prepared until one of the monomers is added in excess, which depends on the interplay of MPD and TMC supply. The insights provided in this study can contribute to reducing the carbon footprint of reverse osmosis membrane synthesis and operation.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Environmental
Zongyao Zhou, Qun Wang, Yiwen Qin, Yunxia Hu
Summary: A free-standing polyamide film is fabricated by removing the polysulfone support from a thin-film composite membrane. The structure parameter of the film is measured to be 24.2 +/- 12.6 μm, which is about 87 times its film thickness. The decline in water flux of the film is attributed to the internal concentration polarization of the polyamide film. The asymmetric hollow structures of the polyamide layer with dense crusts and cavities are proposed as the cause of the occurrence of the internal concentration polarization. Adjusting the structures of the film can reduce the structure parameter and mitigate the effect of internal concentration polarization.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Chemical
Meng You, Binfei Wang, Liyi An, Fei Xu, Zhen Cao, Jianqiang Meng
Summary: The study explores the use of additives to improve the performance of RO membranes, finding that both aqueous and organic phase additives can enhance MPD diffusion and crosslinking density. Aqueous additives lead to thinner and smoother PA selective layers, while organic additives increase film mass and correlate with improved membrane flux.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2021)
Review
Engineering, Chemical
Pei Sean Goh, Kar Chun Wong, Tuck Whye Wong, Ahmad Fauzi Ismail
Summary: Polyamide thin film composite membranes dominate the reverse osmosis market, but chlorine-induced degradation is a weakness. Various strategies have been established for membrane material optimization and surface modifications to address this issue, but challenges and future directions still exist.
FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING
(2022)
Article
Engineering, Chemical
Murtadha A. Aljubran, Zain Ali, Yingge Wang, Emmanuel Alonso, Tiara Puspasari, Klimentsi Cherviakouski, Ingo Pinnau
Summary: This study investigated the removal of As(III) using defect-free interfacially polymerized thin-film composite membranes at different pH conditions. The aromatic polyamide membranes showed high rejection rates for As(III) removal, while the semi-aromatic piperazine-based membranes had lower rejection rates.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Polymer Science
Dongsheng Li, Haoran Lu, Xinyi Yan, Haohan Wan, Guangming Yan, Gang Zhang
Summary: In this study, the chlorine resistance of polyamide membranes was improved by introducing reductive thioether units, which protected the amide bonds. Increasing the copolymerization ratio of T-TDC also reduced the chlorine exposure concentration. The sulfone and sulfoxide groups further prevented membrane degradation by forming hydrogen bonds.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Engineering, Chemical
Wen-xuan Li, Zhe Yang, Wei-liang Liu, Zhi-hao Huang, Hao Zhang, Meng-ping Li, Xiao-hua Ma, Chuyang Y. Tang, Zhen-liang Xu
Summary: This study successfully generated nanochannels with different dimensions using a template-assisted method, improving the performance of RO membranes. Experimental results showed that the TFC membrane with 1D nanochannels exhibited higher water permeability and similar salt rejection compared to the membrane with 0D nanovoids.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
Myoung Jun Park, Chen Wang, Ralph Rolly Gonzales, Sherub Phuntsho, Hideto Matsuyama, Enrico Drioli, Ho Kyong Shon
Summary: This study demonstrates the fabrication of waste-free thin film composite polyamide membranes using inkjet printing, which shows higher performance compared to traditional methods.
Article
Engineering, Chemical
James Joseph, Youssef-Amine Boussouga, Maria Di Vincenzo, Mihail Barboiu, Andrea I. Schaefer
Summary: Investigation of ion transport through artificial water channel-polyamide (AWC-PA) composite membrane revealed that the membrane provides comparable rejection and permselectivity to commercial membranes, except for bivalent cations. The study also found that strongly hydrated bivalent cations enhance the transport through AWC-PA by water clusters. Additionally, reducing the surface charge of AWC-PA membrane by adjusting pH and ionic strength decreases the rejection of anions.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Ruobin Dai, Zhe Yang, Zhiwei Qiu, Li Long, Chuyang Y. Tang, Zhiwei Wang
Summary: Substrate hydrophilicity has significant impacts on the structure and performance of thin-film composite nanofiltration and reverse osmosis polyamide membranes. This study investigates the interfacial polymerization reactions on substrates with different hydrophilicity and finds that hydrophobic substrates improve the water permeance and salt rejection of RO membranes, while hydrophilic substrates enhance the performance of NF membranes. The study highlights the importance of interfacial degassing and local monomer concentration in understanding the impact of substrate hydrophilicity.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Polymer Science
Obakeng B. Nchoe, Kabo Matshetshe, Muhammed As' Ballim, Phumlani Tetyana, Keneiloe Sikhwivhilu, Nosipho Moloto
Summary: In this study, polyamide (PA) thin-film composites (TFC) with embedded silver sulfide (Ag2S) nanoparticles (NPs) were fabricated as reverse osmosis (RO) membranes to mitigate fouling. The TFN membranes were prepared by interfacial polymerization on a polysulfone support membrane. The addition of varied amounts of Ag2S NPs (20, 30, and 50 mg) in the aqueous phase resulted in membranes with enhanced antifouling and permselectivity performance. The TFN membranes exhibited high pure water flux, salt rejection, and resistance to fouling.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Rutuja Bhoje, Asim K. Ghosh, Parag R. Nemade
Summary: The desalination performance of thin-film composite seawater reverse osmosis membranes was improved by incorporating graphene oxide nanoparticles. These nanostructured membranes showed increased water flux and improved compaction resistance.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Integrative & Complementary Medicine
Abhirup Basu, Mayur K. Temgire, Akkihebbal K. Suresh, Jayesh R. Bellare
Article
Materials Science, Multidisciplinary
Sachin D. Girl, Sanjay M. Mahajani, A. K. Suresh, A. Sarkar
MATERIALS RESEARCH BULLETIN
(2020)
Review
Materials Science, Paper & Wood
Rikarani R. Choudhury, Sambit Kumar Sahoo, Jaydevsinh M. Gohil
Article
Polymer Science
Subhalaxmi Behera, Suresh K. Akkihebbal
Article
Engineering, Environmental
David Stokie, Piyush Verma, Benjamin M. Kumfer, Grigoriy Yablonsky, A. K. Suresh, Richard L. Axelbaum
Summary: To achieve purity standard for carbon sequestration, removal of SOx and NOx is crucial in pressurized oxy-combustion of coal. Experimental pilot-scale direct contact column demonstrates efficient removal of both pollutants, with NO oxidation being the controlling reaction. Higher residence time in the column leads to over 90% NOx removal efficiency, while oxygen concentration has minimal impact above 1% v/v. Total NOx scrubbing efficiency is reduced by approximately 10% at high temperatures compared to room temperature, while SOx removal remains above 93% under all conditions.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Rikarani R. Choudhury, Akshaya K. Palai, Jaydevsinh M. Gohil, Smita Mohanty, Sanjay Kumar Nayak
Summary: RAFT polymerization was used to synthesize high molecular weight and narrow PDI PSSC, which was confirmed by various spectroscopic techniques. The resulting polymer showed potential for membrane preparation for fuel cell and water purification.
JOURNAL OF THE INDIAN CHEMICAL SOCIETY
(2021)
Review
Polymer Science
Jaydevsinh M. Gohil, Kingshuk Dutta
Summary: Water electrolysis is a rapidly developing technology critical for hydrogen generation, with different types of membranes playing different roles, with polymer membranes being the preferred choice. The structure and properties of polymer membranes are crucial for determining the final performance of the membranes.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2021)
Review
Polymer Science
Rikarani R. Choudhury, Jaydevsinh M. Gohil, Kingshuk Dutta
Summary: Clean water and energy are two vital requirements for human survival, with membrane-based technologies playing a key role in water purification and energy sectors. Poly(vinyl alcohol) emerges as a promising membrane material due to its advantageous properties, finding applications in polymer electrolyte membranes for fuel cells and water treatment membranes.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2021)
Article
Engineering, Chemical
Ashutosh Namdeo, Jainesh H. Jhaveri, Sanjay M. Mahajani, Akkihebbal K. Suresh
Summary: This study investigates the reaction on supported Pd and Au catalysts under alkaline conditions and finds that the selectivity to C-3 compounds is better under the influence of mass transfer. These findings have significant practical implications for the scale-up and process design of this reaction.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Engineering, Chemical
Minakshee Phutke, Amaresh R. Raichur, Akkihebbal K. Suresh
Summary: A consistent description of solid-solid reactions considering the spatially discontinuous nature of contact between the reactant particles is proposed. The paper provides a methodology to estimate two parameters separately from kinetic data and tested it on the calcia-C(12)A(7) system, showing the sensitivity of the initial contact area parameter to the number of contact points and temperature.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Polymer Science
Rikarani R. Choudhury, Jaydevsinh M. Gohil, Kingshuk Dutta
Summary: The use of water-soluble polymers as films, membranes, and coatings for aqueous applications has grown due to their environmentally friendly nature and biodegradability. This study focuses on the preparation of water-insoluble ionic thin films using a water-soluble blend of poly(vinyl alcohol) (PVA) and poly(acrylic acid) (PAA) through an environmentally friendly approach. The cross-linking temperature affects the properties of the films, such as swelling, molecular weight, and mesh size. Cation exchange membranes and composite membranes were also fabricated, showing high rejection rates and selectivity.
IRANIAN POLYMER JOURNAL
(2022)
Article
Chemistry, Physical
Preeti Jha, Akkihebbal K. Suresh
Summary: Interfacial polymerization (IP) is a fast polymerization technique that has flexible operating conditions and does not require highly pure monomers. However, mathematical modeling of IP reaction, especially for predicting film properties, is challenging due to fast reaction kinetics and complex physicochemical processes involved. This study extends previous work on polyurea and accounts for various processes associated with the interfacial reaction, such as ionic equilibria, mass transfer, and phase separation kinetics.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Chemical
Tejeswi Ramprasad, Akkihebbal K. Suresh
Summary: Enhancements in mass transfer have been demonstrated with nanosized particles in conventional media, and the effect is influenced by particle size and holdup. Limited information exists on the nanomaterial density, but it appears to be an important parameter as well. This study investigates the use of nanofluids with different densities in the absorption process of CO2, revealing a higher enhancement in physical absorption. The results show a strong dependence on the material density, with gold particles providing a 10-fold enhancement in physical absorption.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Rikarani R. Choudhury, Jaydevsinh M. Gohil, Hiren Raval
Summary: This research introduces the concept of thin film composite (TFC) membranes prepared using a novel functional copolymer, PVA-co-SSA. A polysulfone ultrafiltration membrane was coated with a PVA-co-SSA solution, which was then crosslinked with glutaraldehyde (GA) aqueous solution. The characteristics of the TFC membranes were evaluated based on the concentrations of PVA-co-SSA and GA solution used for preparation. The composite membranes exhibited a hydrophilic and smooth surface, with a thickness of the selective layer ranging from 123 to 276 nm. The membranes showed high rejection of MgSO4 (74.8%) and moderate rejection of NaCl (33.75% to 54%) at different operating pressures.
SEPARATION SCIENCE AND TECHNOLOGY
(2023)
Review
Chemistry, Multidisciplinary
Raghavendra Ragipani, Sankar Bhattacharya, Akkihebbal K. Suresh
Summary: Research on carbon dioxide sequestration through mineral carbonation has gained significant attention due to the stability of sequestered CO2 over geological time scales. Utilizing industry-derived alkaline wastes as feedstocks for mineral carbonation presents an opportunity for waste valorization. Current efforts are focused on overcoming slow carbonation kinetics and optimizing various process routes.
REACTION CHEMISTRY & ENGINEERING
(2021)
