Hossein Abolghasemi

University of Tehran

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Hooman Fatoorehchi

University of Tehran

Jaber Safdari

Atomic Energy Organization of Iran

Mohamad Esmaieli

University of Tehran

Maliheh Raji

Islamic Azad University, Science and Research Branch

Seyed Javad Ahmadi

Atomic Energy Organization of Iran

Ahmad Mohaddespour

McGill University

Payman Davoodi-Nasab

Iran University of Science and Technology

Parisa Zaheri

Atomic Energy Organization of Iran

Randolph Rach

Hartford Financial Services (United States)

Ghadir Nazari

University of Tehran

Cooperative Institutions

University of Tehran

Atomic Energy Organization of Iran

Nuclear Science and Technology Research Institute

Tarbiat Modares University

Amirkabir University of Technology

Iran University of Science and Technology

Sharif University of Technology

Islamic Azad University, Tehran

Islamic Azad University, Science and Research Branch

GTx (United States)

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Polymer inclusion membranes with dinonylnaphthalene sulfonic acid as ion carrier for Co(II) transport from model solutions

Desalination and Water Treatment (2019)

Mohammad Shirzad Mohsen Karimi Hossein Abolghasemi

In this study, recovery of Co(II) from aqueous solution by polymer inclusion membrane (PIM) composed of dinonylnaphthalene sulfonic acid (DNNSA) as the ion carrier, plasticized with four different plasticizers, and cellulose triacetate as the polymeric base was investigated.The membrane composition and aqueous phase parameters were considered, respectively.Carrier concentration as an important parameter in the recovery efficiency was investigated and the membrane composed of 15%wt. of DNNSA was found as most efficient membrane forextraction of Co(II) ions.The study also included the effects of nature and concentration of plasticizers.Extraction across membranes plasticized with dioctyl adipate (DOA), dioctyl phthalate, triethyl phosphate, and tributyl phosphate were evaluated and the membrane plasticized with DOA (62%wt.)showed the maximum flux and extraction.Also, the aqueous phase parameters including the rate of mixing, initial ion concentration, pH of source phase, kind of receiving phase, receiving phase acid concentration were evaluated after studying membrane composition parameters.Then, extraction of cobalt across PIM was considered in a long life experiment to extract all content of heavy metal.The reproducibility of cobalt extraction was investigated by 10 replicate measurements.Finally, presence of nanoparticles in the PIM structure was considered as a new technique to modify the membrane extraction capacity.The results showed that SiO 2 and TiO 2 enhance the ion extraction 5.4% and 3.3%, respectively.

Cellulose triacetate

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Adipate

Sulfonic acid

10.5004/dwt.2019.23575

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Enhancing thermal performance in shell-and-tube latent heat thermal energy storage units: An experimental and numerical study of shell geometry effects

International Communications in Heat and Mass Transfer (2024)

Nazila Parsa Babak Kamkari Hossein Abolghasemi

This study investigates the influence of shell geometry on the thermal performance of latent heat storage (LHS) units. Three transparent shell-and-tube LHS units, featuring circular, horizontal, and vertical obround shell geometries, each possessing a similar shell volume, were fabricated and filled with paraffin as the phase change material (PCM). Employing a combination of visualization experiments and numerical simulations, the thermal performance of LHS units with horizontally and vertically oriented obround shell geometries was comprehensively analyzed and compared with conventional circular shell-and-tube heat exchangers (HX), commonly utilized in the industry. Data derived from image processing of photographs, coupled with recorded temperatures, were used to calculate liquid fractions, analyze heat transfer characteristics, and ascertain the dominant heat transfer mechanisms during the melting process. The results reveal that the utilization of a horizontal obround shell enhances the heat transfer rate, thereby expediting the melting process. A comparative analysis of melting photographs demonstrates that the horizontal obround shell reduces the melting time by 32% compared to the circular shell, while the vertical obround shell extends the total melting time by 13%. In contrast to the circular shell, the horizontal obround shell exhibits a substantial improvement of 41% in the time-averaged heat transfer rate, whereas the vertical obround shell shows a decrease of 12%.

10.1016/j.icheatmasstransfer.2024.107398

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Citations (8)

Modelling of Mean Drop Size in a Extraction Spray Column and Developing a New Model

DOAJ (DOAJ: Directory of Open Access Journals) (2011)

Sohrab Ali Ghorbanian Hossein Abolghasemi Saeid Reza Radpour

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Analytical approximate solutions for a general nonlinear resistor–nonlinear capacitor circuit model

Applied Mathematical Modelling (2015)

Hooman Fatoorehchi Hossein Abolghasemi Reza Zarghami