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All Journal Journal of Chemical Engineering Research Progress African Multidisciplinary Journal of Sciences and Artificial Intelligence Open Access DRIVERset
Ahmad, Aisha
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Energy Engineering Environmental Science Materials Science & Nanotechnology

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Improving Heat-Exchange Network Efficiency Through Front-End Process Modification in the Drying Oil Production from Acetylated Castor Oil Soebiakto, Devieazy Poetri; Sabrina, Ilma; Alfinurazizah, Alfinurazizah; Ahmad, Aisha; Chrisnantoe, Valenciana; Ramadhani, Hawwa
Journal of Chemical Engineering Research Progress 2025: JCERP, Volume 2 Issue 2 Year 2025 (December)
Publisher : UPT Laboratorium Terpadu, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/jcerp.20586

Abstract

Enhancing the energy efficiency of drying oil production is critical for reducing utility consumption and advancing process sustainability. This study explores front end heat integration modifications by replacing the fired heater with a process to process heat exchanger and employing the high-temperature bottom stream of the distillation column as an internal heat source. Comparative simulations using Aspen HYSYS V11 were performed for both the baseline and modified flowsheets. The redesigned system enables internal preheating through mixing and heat recovery, thereby eliminating the fired heater and lowering the cooling demand in downstream units. Consequently, the total net energy requirement decreases from 8.895×10⁶ kJ/h to 7.363×10⁶ kJ/h, corresponding to an efficiency gain of approximately 17.2%, while maintaining product purity at 99.97%. These results highlight the effectiveness of early stage heat integration strategies in reducing external utility demand, improving energy efficiency, and supporting more sustainable drying oil production. Future research may extend to comprehensive heat exchanger network (HEN) optimization and renewable-assisted heat recovery schemes. Copyright © 2025 by Authors, Published by Universitas Diponegoro and BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Synthesis, Characterizations and Biological Efficacy of Aminobenzofuran and 2-Methoxyphenylacetaldehyde and Its Co(II) and Zn(II) Complexes Abdulazeez, Abduljeleel Mohd; Aminu, Ahmad; Ahmad, Aisha
African Multidisciplinary Journal of Sciences and Artificial Intelligence Vol 1 No 1 (2024): African Multidisciplinary Journal of Sciences and Artificial Intelligence
Publisher : Darul Yasin Al Sys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/amjsai.v1i1.3738

Abstract

Metal complexes of some transition metal ions viz Co (II), and Zn (II) have been synthesized from a Schiff base (L) formed by the condensation of 2-amino-benzofuran and 2-methoxyphenylacetaldehyde. Synthesized compounds have been studied by various spectroscopic techniques and eval_uated for their biological efficacy. From the FTIR result, A peak at 1566 cm-1 was assigned to azomethine v(C=N) stretching vibration, which shifted to 1640cm-1 and 1637cm-1 in cobalt (II) and, zinc (II) complexes respectively. Also, a broad band was observed in the Schiff base and the complexes at 3219cm-1 which indicate presence of water of crystallization to the complex structure. The complexes are non-electrolytic in nature and have high thermal stability. Job’s method of continuous variation suggests 1:2 metal to ligand ratio. Antibacterial and antifungal study of ligand and its metal complexes have shown that the metal complexes are more active than their corresponding ligand.
Synthesis, Characterizations and Biological Efficacy of Aminobenzofuran and 2-Methoxyphenylacetaldehyde and Its Co(II) and Zn(II) Complexes Abdulazeez, Abduljeleel Mohd; Aminu, Ahmad; Ahmad, Aisha
African Multidisciplinary Journal of Sciences and Artificial Intelligence Vol 1 No 1 (2024): African Multidisciplinary Journal of Sciences and Artificial Intelligence
Publisher : Darul Yasin Al Sys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/amjsai.v1i1.3738

Abstract

Metal complexes of some transition metal ions viz Co (II), and Zn (II) have been synthesized from a Schiff base (L) formed by the condensation of 2-amino-benzofuran and 2-methoxyphenylacetaldehyde. Synthesized compounds have been studied by various spectroscopic techniques and eval_uated for their biological efficacy. From the FTIR result, A peak at 1566 cm-1 was assigned to azomethine v(C=N) stretching vibration, which shifted to 1640cm-1 and 1637cm-1 in cobalt (II) and, zinc (II) complexes respectively. Also, a broad band was observed in the Schiff base and the complexes at 3219cm-1 which indicate presence of water of crystallization to the complex structure. The complexes are non-electrolytic in nature and have high thermal stability. Job’s method of continuous variation suggests 1:2 metal to ligand ratio. Antibacterial and antifungal study of ligand and its metal complexes have shown that the metal complexes are more active than their corresponding ligand.
Co-Authors Abdulazeez, Abduljeleel Mohd Alfinurazizah, Alfinurazizah Aminu, Ahmad Chrisnantoe, Valenciana Ramadhani, Hawwa Sabrina, Ilma Soebiakto, Devieazy Poetri