Nasim Hooshyar

Nasim Hooshyar
Dow Chemical Company | DOW · Division of Research and Development

PhD in Chemical Engineering

About

20
Publications
7,268
Reads
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373
Citations
Additional affiliations
October 2008 - January 2013
Delft University of Technology
Position
  • PhD Student
Education
October 2008 - January 2013
Delft University of Technology
Field of study
  • Multi-phase flow, Chemical Engineering

Publications

Publications (20)
Article
Soybeans are an important raw material for those seeking vegan, lactose-free products, such as soymilk and tofu. The aim of this review article is to provide an overview of aqueous extraction of protein and other desirable components from whole soybeans. Firstly, a discussion over the microstructure of the soybean is held, including a summary of pr...
Article
Full-text available
Unit operations to enhance protein extraction within the food industry are vital to improve current processes, especially for cost reductions and sustainability. Here a study of ultrasound-assisted extraction (UAE) from soy slurry and okara produced at pilot-scale and further processed using a lab or pilot-scale probe system is presented. Confocal...
Article
Full-text available
High pressure homogenisation (HPH) has been investigated for its potential to aid the aqueous extraction of protein and other components from soybeans. HPH treatments (50–125 MPa) were applied to soy slurry and okara, the diluted waste stream from soybase production. Extraction yields of oil, protein and solids were calculated, and the feasibility...
Article
During soymilk production, aqueous extraction conditions are utilised resulting in suboptimal protein extraction yields. This research focuses on the intensification of extraction yields from soybeans using ultrasound and understanding the reasoning behind the results. Milled soybean slurry and okara samples were treated with ultrasound using a lab...
Chapter
The present work describes the product driven process synthesis (PDPS) methodology for the conceptual design of extraction of intact oil bodies from soybeans. First, in this approach consumer needs are taken into account and based on these needs application of the final product (oil bodies) is defined to use extracted oil bodies for food industry a...
Article
Catechins are the main polyphenols present in a green tea and have been associated to several health benefits due to the antioxidant, antimutagenic and antiviral properties. They are, therefore, regarded as desired components with several applications in a variety of areas such as foods, cosmetics and pharmaceuticals. In this study a macroporous po...
Article
Modified UNIFAC (Mod. UNIFAC) is a proven model for the prediction of activity coefficients of molecules in non-ideal mixtures. However, Mod. UNIFAC is often not accurate when hydrogen bonding or strong hydrophobic interactions are present. An interesting group of molecules called polyphenols presents both types of interactions and therefore, Mod....
Article
Okara is a byproduct of the soy milk industry containing valuable phytochemicals, called isoflavones, among other components (i.e., proteins, sugars, fibers, etc.). As a waste product, okara is an interesting source material for obtaining valuable chemicals, and knowledge of the behavior of such components in their complex matrix is a key step for...
Article
This work focuses on the rapid selection of a resin from a defined set of macroporous polymeric resins for the decaffeination of catechins from green tea. High-throughput experimentation and design of experiments are used in order to retrieve as much information as possible from a small set of experiments on the interaction of components with the r...
Article
Full-text available
Sustainable production of food products for human consumption is required to reduce negative impacts on the environment and to consumer’s health. Soybeans are an excellent source of nutritive plant proteins; aqueous extraction yields part of the available oil and protein from the legume. Many studies have been conducted which detail the various pro...
Article
We experimentally investigate the effect of particles on the dynamics of a gas bubble rising in a liquid-solid suspension while the particles are equally sized and neutrally buoyant. Using the Stokes number as a universal scale, we show that when a bubble rises through a suspension characterized by a low Stokes number (in our case, small particles)...
Article
This paper investigates the intensification of Fischer–Tropsch Synthesis in two types of three-phase catalytic reactors: slurry bubble columns and multi-tubular fixed beds. A simple mathematical model is used to analyse the effect of structuring on the C5+ productivity of these two types of reactors. The results of the model show that decreasing th...
Conference Paper
While the dynamics of single rising gas bubbles in clear liquids has been studied extensively, the dynamics of bubbles in liquid-solid slurries containing small particles ( ds< 100μm ) is not yet well understood. We have investigated the rise characteristics of single gas bubbles ( =3mm) in a neutrally buoyant suspension of Polystyrene particles (...
Conference Paper
The structuring of the multiphase reactors introduces extra degrees of freedom allowing decoupling of conflicting design objectives, such as high mass transfer versus low pressure drop in a packed bed. In this way, structuring facilitates reaching goals such as process intensification and more sustainable operation. At Delft University of Technolog...
Article
In this paper we study the effects of structuring column on the hydrodynamics of slurry bubble columns. The overall aim of our research is to reduce backmixing to achieve a higher efficiency. We apply a special needle sparger in a 2D and 3D column. We are investigating the gas fraction and bubble dynamics using a four-point optical probe in a three...
Article
We investigate uniform gas injection using a needle sparger as a structuring methodology to reduce backmixing in slurry bubble columns. Using optical probes, we determined the gas fraction and the bubble behaviour in 2D and 3D slurry bubble columns with a uniform gas injection. Experimental results for air–water–glass beads (ds = 108 µm, Usg = 0–0....
Article
The increase in society's need for fuels and decrease in crude oil resources are important reasons to make more interest for both academic and industry in converting gas to liquids. Fischer-Tropsch synthesis is one of the most attractive methods of Gas-to-Liquids (GTL) processes and the reactor in which, this reaction occurs, is the heart of this p...
Conference Paper
Fischer-Tropsch synthesis is one of the most attractive methods of Gas-to-Liquids processes and the reactor, in which this reaction occurs, is the heart of this process. Simulation of the dynamic behavior of Fischer-Tropsch synthesis was carried out at churn turbulent flow regime for both single and double bubble class flow regimes, considering axi...
Article
Full-text available
In gas-solid fluidized beds it has been shown that the performance can be improved by structuring the hydrodynamics. Recently, we have started to apply this strategy to three-phase slurry bubble columns to increase its operating performance. In this paper some preliminary results and ideas are presented. We show that for a bubble column with a very...

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