Distillation design and optimization of quaternary azeotropic mixtures for waste solvent recovery

Chaniago, Yus Donald,Lee, Moonyong Elsevier 2018 Journal of industrial and engineering chemistry Vol.67 No.-

<P><B>Abstract</B></P> <P>The huge amount of solvents used in the semi-conductor and display industry typically result in waste of valuable solvents which often form complex azeotropic mixtures. This study explored a recovery process of a quaternary waste solvent, comprising methyl 2-hydroxybutyrate, propylene glycol monomethyl ether acetate, ethyl lactate, and ethyl-3-ethoxy propionate. In this study, a novel shortcut column method with a graphical approach was exploited for the distillation column design of complex quaternary azeotropic mixtures. As a result, the proposed shortcut method and design procedure solved the complex separation paths successfully with less computational efforts while achieving all requirements for component purity.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Effective waste solvent recovery from semiconductor and display industries. </LI> <LI> Simple distillation design procedure for quaternary azeotropic mixtures by exploiting a shortcut method. </LI> <LI> Novel graphical design method for complex separation of column paths. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

Design and modeling of optimal distillation sequence for recovery of valuable components from a waste photoresist stripper

Chaniago, Y. D.,Kim, J. K.,Park, M. J.,Koo, K. K.,Lee, M. Springer Science + Business Media 2016 JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT Vol.18 No.2

<P>Currently, waste photoresist stripper from the semiconductor industries is generally incinerated at high temperatures or processed as a high-calorie fuel, which can have adverse effects on the environment and economy. Recovery of valuable solvents from waste photoresist strippers is, therefore, very important for thin flat transistor-liquid crystal display (TFT-LCD) manufactures to reduce the production costs and protect the environment against industrial waste. In the present work, systematic laboratory-scale distillation experiments were carried out to regenerate the organic solvents from the waste photoresist stripper and determine if they are feasible to recycle for commercial TFT-LCD grade chemicals: in particular, 1-hydroxyethylpiperazine and methyl diglycol were mainly tried to retrieve. Based on the experiment results, possible alternative distillation sequences were examined through intensive techno-economic analysis using a rigorous process simulator. As a result, an optimal distillation sequence and condition were drawn to separate valuable organic solvents from waste photoresist stripper for a commercial purpose recovery process.</P>

The Impact of Social Media Use on Student Entrepreneurship Intention and Implementation: Evidence from Indonesia

Harmon CHANIAGO,Abdul Malik SAYUTI 한국유통과학회 2022 The Journal of Asian Finance, Economics and Busine Vol.9 No.2

In this paper, we investigates the benefits of using social media on intentions and implementation entrepreneurial. This study took place in a well-known vocational college in Bandung, Indonesia, from July 2020 to January 2021. The research method used was the explanatory survey. Research data obtained from 317 respondent. Factor analysis and multiple regression were used to analyze the data. According to this study, social media has three dimensions: ease of use, controllability, usability, and profit. Entrepreneurial intention is made up of two components: entrepreneurial motive and entrepreneurial effort. Furthermore, there are four components to entrepreneurship implementation: investment courage, technology tools, social media skills, and environmental support. Other findings of each dimension of social media proved to affect entrepreneurial intention positively. The four aspects of entrepreneurial execution were likewise positively influenced by the dimension of entrepreneurial intention. This research reveals that students make the most use of the technologies available on social media for business and interactively communicate with their customers. Therefore, social media plays a role in accelerating the growth of entrepreneurship among students. However, more research is needed to see if there is a continuous pattern in the findings of this study so that the findings can be generalized.

Demographic Characteristics and Small Business Success: Evidence from Indonesia

Harmon CHANIAGO 한국유통과학회 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.12

The demographic characteristics of a leader are important for small businesses during the COVID-19 pandemic. Several researchers have proven that demographic characteristics affect business success. Unfortunately, business success has only been analyzed from a financial perspective and has not been compared to the owner’s interests perspective. This study examines business success from both perspectives. This study aims to analyze the demographic characteristics of small entrepreneurs and their impact on business success. Demographics consist of age, experience, education, and gender. Meanwhile, business success is seen from two perspectives: financial performance and the owner’s interest. The study used an explanatory survey method. The number of samples is 155 entrepreneurs who are also the leaders of their businesses. The research was conducted in Bandung City, Indonesia, in 2021. The data was processed using descriptive statistics and multiple regression. The study results found that age only affects financial performance. Experience is proven to affect financial performance and the interests of the owner. Gender only affects the interests of the owner. This study concludes that in difficult times such as the COVID-19 pandemic, having young leaders who are experienced will make it easier to achieve business success.

Distillation design and optimization of quaternary azeotropic mixtures for waste solvent recovery

Yus Donald Chaniago,이문용 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.67 No.-

The huge amount of solvents used in the semi-conductor and display industry typically result in waste of valuable solvents which often form complex azeotropic mixtures. This study explored a recovery process of a quaternary waste solvent, comprising methyl 2-hydroxybutyrate, propylene glycol monomethyl ether acetate, ethyl lactate, and ethyl-3-ethoxy propionate. In this study, a novel shortcut column method with a graphical approach was exploited for the distillation column design of complex quaternary azeotropic mixtures. As a result, the proposed shortcut method and design procedure solved the complex separation paths successfully with less computational efforts while achieving all requirements for component purity.

Significance of operating pressure on process intensification in a distillation with side-reactor configuration

Hussain, Arif,Chaniago, Yus Donald,Riaz, Amjad,Lee, Moonyong Elsevier 2019 Separation and purification technology Vol.213 No.-

<P><B>Abstract</B></P> <P>Distillation with side-reactor (SRC) has already established its potential for understanding the energetic and economic performances of chemical processes. This study assesses the impact of operating pressure on reaction performances and overall economics in the SRC design. In conventional distillation operation, pressure is adjusted such that it permits the use of less expensive cooling water (318 K) in the condenser. However, the pressure of the nonreactive distillation column coupled to a side-reactor should be more carefully managed to obtain the process-intensification potential benefits. In the SRC design, the feed to the side-reactor is withdrawn from the column trays where the reactants are more abundant. Higher column pressure requires a more expensive heat source for the column base and causes temperature rise on the column trays. Depending on the kinetic parameters of the reaction, the pressure of the column can be adjusted to improve the conversion, selectivity, yield, and overall economics of the chemical process in an SRC design. A foremost trade-off between the operating pressure and reactor size/catalyst/heat load is demonstrated through three industrial-chemical processes. The outcome of this study affirmed the importance of understanding the impact, on process intensification, of selecting the appropriate operating pressure during the SRC conceptual design.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The effect of operating pressure on process intensification in SRC design was studied. </LI> <LI> The dependence of side-reactor volume/catalyst weight/heat duty on pressure was studied. </LI> <LI> Three real chemical processes were simulated to analyze the results. </LI> <LI> Optimal design of SRC configurations was obtained by optimizing pressure. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

Design method for the feasibility and technical evaluation of side-reactor column configurations

Hussain, Arif,Chaniago, Yus Donald,Riaz, Amjad,Lee, Moonyong ELSEVIER 2019 CHEMICAL ENGINEERING AND PROCESSING Vol.144 No.-

<P><B>Abstract</B></P> <P>A distillation column with side-reactor column (SRC) configuration is recommended for intensifying the conventional chemical processes in which traditional process intensification (PI) techniques negate the overall economic benefits owing to operational and technical constraints. Existing methods, however, lack systematic approaches to quickly identify whether PI using SRC design is a viable alternative, and therefore requires extensive simulation studies to verify its technical feasibility. This paper presents guidelines that quickly provide insights into the applicability of SRC to a wide range of conventional or reactive distillation (RD) processes. The reported applicability of SRC to three chemical processes clearly demonstrates the reliability of the projected framework. This paper also summarizes basic design parameters to maximize PI benefits from a practical point of view, while considering the applicability of SRC.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Side reactor column (SRC) as process intensification (PI) of reactor and distillation column are studied. </LI> <LI> Guidelines that quickly provide insights into the applicability of SRC to a wide range of reactive distillation (RD). </LI> <LI> Detail on basic design parameters to maximize PI benefits from a practical point of view and the applicability of SRC. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

Process Design Alternatives for Producing Ultra-high-purity Electronic-Grade Propylene Glycol Monomethyl Ether Acetate

Hussain, Arif,Chaniago, Yus Donald,Riaz, Amjad,Lee, Moonyong American Chemical Society 2019 INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH - Vol.58 No.6

<P>Ultra-high-purity propylene glycol monomethyl ether acetate (PGMEA) is required as a solvent to meet the stringent requirements of the electronic-grade semiconductor industry. Here, a comparative study of two process intensification configurations-a coupling reaction and separation in the transesterification route for PGMEA production-is presented. Reactive distillation (RD), despite being technically feasible for the transesterification reaction, poses severe challenges owing to its operational/design limitations. For instance, the homogeneous catalyst sodium methoxide is insoluble in the reaction mixture and deposited on the reactive packing surface of the RD column. An intensified configuration of the side-reactor column (SRC) configuration is analyzed as an alternative to mitigate the operational limitations of RD. An economic evaluation is conducted for both configurations, showing that the SRC configuration can match the performance of an RD column with only a 5% increase in total annual cost.</P> [FIG OMISSION]</BR>

Coal to clean energy: Energy-efficient single-loop mixed-refrigerant-based schemes for the liquefaction of synthetic natural gas

Qyyum, Muhammad Abdul,Chaniago, Yus Donald,Ali, Wahid,Qadeer, Kinza,Lee, Moonyong Elsevier 2019 Journal of Cleaner Production Vol.211 No.-

<P><B>Abstract</B></P> <P>Higher air-pollutant (CO<SUB>2</SUB>, SO<SUB>2</SUB>, particulates, etc.) emission from coal burning prohibits the direct use of coal. The demand for clean and sustainable energy is increasing with the growth of population and living standards. Considering the current energy challenges, coal-enriched countries have focused on the green utilization of coal by converting it to a clean energy source, such as synthetic natural gas (SNG). To fulfill the global clean energy demand, liquefaction is a promising and feasible approach enabling safe storage and transportation. However, the liquefaction of SNG is an energy- and cost-intensive process, primarily owing to the presence of low-boiling impurities such as hydrogen and nitrogen. This paper describes the major challenges and issues associated with the SNG liquefaction process for its commercialization and attempts to solve the issues inherent to the SNG liquefaction industry. The optimal energy-efficient single-loop mixed-refrigerant-based liquefaction schemes, with the separation of low-boiling impurities (hydrogen and/or nitrogen), are presented as a major contribution of this study. The proposed SNG liquefaction schemes are analyzed in comparison with the latest SNG liquefaction study. Liquefied SNG can be produced with energy savings of up to 30.4% compared to the published base case.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Green utilization of coal to convert it to clean energy i.e., LNG. </LI> <LI> Synthetic natural gas liquefaction with the removal of low-boiling impurities. </LI> <LI> Single-loop mixed refrigerant for energy-efficient liquefaction. </LI> <LI> Hydrogen (H<SUB>2</SUB>) and nitrogen (N<SUB>2</SUB>) removal from synthetic natural gas. </LI> <LI> Flash, stripper, and distillation-based separation for H<SUB>2</SUB> and N<SUB>2</SUB> recovery. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

Simulation Study of a Reactive Batch Distillation Column

Wahid Ali,Mohd. Shariq Khan,Yus Donald Chaniago,Reizqa Andika,Le Cao Nhien,Bong Gu Choi,Moonyong Lee 제어로봇시스템학회 2014 제어로봇시스템학회 국내학술대회 논문집 Vol.2014 No.5