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All Journal World Chemical Engineering Journal JURNAL INTEGRASI PROSES
Wardalia, Wardalia
Universitas Sultan Ageng Tirtayasa
Chemical Engineering, Chemistry & Bioengineering Other

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Effectivity Of Zeolite As An Adsorbent For Methyl Violet Adsorption Wardalia, Wardalia; Septi, Dede; Dewiyanti, Isna; Kanani, Nufus; Adiwibowo, Muhammad Triyogo
World Chemical Engineering Journal VOLUME 7 NO.1 JUNE 2023
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/wcej.v7i1.20851

Abstract

The textile industry in Indonesia is developing. This development aligns with the amount of waste produced, such as dyes and metal waste, which can harm the environment and must be processed. One of the waste treatment methods that can be used is adsorption using zeolite. This study aims to determine the absorption effectiveness of Bayah natural zeolite adsorbents on lead and methyl violet waste. The zeolite was mashed and uniformed in size up to 80 mesh and then washed and heated to 120℃ to remove impurities in the zeolite. Then the zeolite was activated using 1 M HCl and 1 M NaOH activators and calcined at 500 ℃ for 4 hours. This research was carried out by varying the mass of the adsorbent as much as 0.5 and 1 g and the adsorption stirring time for 30 and 60 minutes. The results show that the maximum adsorption capacity was 181.84 mg/g with an efficiency of 91% for methyl violet adsorption and 198.7 mg/g with an efficiency of 99.57% for lead adsorption. The adsorption of natural zeolite on methyl violet and lead metal followed the Langmuir isotherm pattern with adsorption capacity of 23.04 mg/g and 87.72 mg/g, respectively.
The Influence of Natural Bayah Zeolite on the Pyrolysis Process of Liquid Fuel Based on HDPE and PP Plastic Waste Heriyanto, Heri; Suhendi, Endang; Nasheh, Muhammad Yusril; Rizqillah, Muhammad Fathi; Wardalia, Wardalia; Pujiastuti, Hendrini
World Chemical Engineering Journal VOLUME 8 NO.1 JUNE 2024
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/wcej.v8i1.26617

Abstract

Pyrolysis is a decomposition reaction method involving the heating of a material with little or no oxygen. The objectives of this research are to utilize plastic waste for the production of liquid fuel and determine the optimal conditions for maximizing liquid fuel yield. The pyrolysis method was used at a temperature of 350°C for 300 minutes with High-Density Polyethylene (HDPE) and Polypropylene (PP) plastic as raw materials in composition variations of 7:3, 5:5, and 3:7, and the Bayah natural zeolite catalyst was activated and varied in amounts of 0%, 3%, and 5%. The analysis included yield tests, density tests, viscosity tests, calorific value tests, and the composition analysis of the liquid product yield.The results of this research indicated that the highest liquid product yield was obtained with a composition of 30% HDPE, 70% PP, and 0% catalyst, achieving a yield of 66.4%. It was concluded that the activated Bayah natural zeolite catalyst was not sufficiently effective in the pyrolysis process at a temperature of 300°C. The highest density and viscosity values were obtained with a composition of 70% HDPE, 30% PP, and 0% catalyst, which were 0.764 g/cm³ and 0.789 cP, respectively. The highest calorific value was obtained with a 50% HDPE and 50% PP composition, reaching 10,978.8 Cal/g. The composition analysis of the liquid product yield for a 70% HDPE and 30% PP composition resulted in 42% gasoline and 58% kerosene. For a 30% HDPE and 70% PP composition, the yield was 30% gasoline, 62% kerosene, and 8% diesel.
Eco-Friendly Transformation and Energy Efficiency in Methanol-to-Olefins (MTO) Processes: Innovations Toward Sustainable Olefin Production Heriyanto, Heri; Rochmat, Agus; Suhendi, Endang; Pujiastuti, Hendrini; Wardalia, Wardalia; Kanani, Nufus
World Chemical Engineering Journal VOLUME 8 NO. 2 DECEMBER 2024
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v8i2.30231

Abstract

Uncertainty regarding global crude oil prices has raised concerns for industry players, including the intermediate chemical industry such as olefins. The possibility of oil prices rising unpredictably makes the production of olefins from naphtha less attractive. On the other hand, abundant reserves of coal and natural gas are being considered as the foundation for developing the olefin industry based on gasification processes. The process routes include the formation of synthetic gas (SynGas) consisting of Hydrogen and Carbon Monoxide (H2 and CO), Methanol production from SynGas, and Olefin production from Methanol (MTO). This review aims to provide an overview of MTO and future developments related to the diversification of processes and technologies for the commercial production of olefins. Current research development on the Methanol-to-Olefins (MTO) process has narrowed down to three main areas, including: (1) Catalyst modification to increase reaction yield (particularly C2 and C3 products), (2) Determination of detailed reaction mechanisms in olefin formation, and (3) Catalyst deactivation processes in MTO.
Evaluating Emulsion Dynamics: The Role of Surfactants and Mixing Conditions in Non-Baffled Configurations Kanani, Nufus; Kustiningsih, Indar; Wardhono, Endarto Yudo; Wardalia, Wardalia; Heriyanto, Heri; Adiwibowo, Muhammad Triyogo; Rusdi, Rusdi; Hartono, Rudi; Demustila, Harly; Damayanti, Demietrya Renata Sashi; Maulida, Alyssa Shafira; Priyatna, Aufa Irsyad
World Chemical Engineering Journal VOLUME 8 NO. 2 DECEMBER 2024
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v8i2.30085

Abstract

The study investigates the impact of surfactant concentration and mixing time on the physical properties and stability of emulsions in non-baffle mixing systems. Surfactants, known for their ability to reduce interfacial tension, play a pivotal role in enhancing emulsion stability by promoting uniform droplet dispersion and reducing coalescence. Experiments were conducted using varying surfactant concentrations (0, 5, and 10 mL) to evaluate their effects on key parameters such as density, viscosity, Reynolds number, emulsion height, and stability over time. The results revealed that higher surfactant concentrations significantly improved emulsion uniformity and stability, with the 10 mL concentration yielding the most consistent outcomes. However, the absence of baffles introduced challenges, including prolonged mixing times and stratification tendencies, underscoring the need for optimized mixing configurations. These findings have practical implications for industries reliant on stable emulsions, highlighting the importance of balancing surfactant concentration and mixing dynamics to achieve efficient and cost-effective processes.
A REVIEW OF DEEP EUTECTIC SOLVENTS IN GREEN EXTRACTION OF CHITOSAN: COMPOSITION, EFFICIENCY, AND RECYCLABILITY Kanani, Nufus; Wardalia, Wardalia; Kustiningsih, Indar; Adiwibowo, Muhammad Triyogo; Rusdi, Rusdi; Hartono, Rudi; Heriyanto, Heri
JURNAL INTEGRASI PROSES Vol 14, No 1 (2025)
Publisher : JURNAL INTEGRASI PROSES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/jip.v14i1.32299

Abstract

Chitosan, a biopolymer derived from chitin-rich biomass such as crustacean shells, has garnered attention for its biodegradability, biocompatibility, and wide-ranging applications. However, conventional chemical extraction methods relying on strong acids and bases pose significant environmental and safety concerns, often leading to molecular degradation and low product quality. This study explores the use of deep eutectic solvents (DESs) as a green alternative for chitosan extraction. DESs, formed from combinations of hydrogen bond donors and acceptors, offer tunable properties, lower toxicity, and recyclability. The article highlights the structural advantages, extraction efficiency, and environmental benefits of DESs over conventional methods. It also examines the integration of process intensification technologies, such as microwave and ultrasound-assisted extraction, to enhance yield and reduce energy consumption. The findings underscore DESs’ potential to produce high-purity chitosan while supporting sustainability goals and industrial scalability, offering a viable pathway toward eco-friendly biopolymer processing.
Co-Authors Damayanti, Demietrya Renata Sashi Dewiyanti, Isna Endarto Yudo Wardhono Harly Demustila Heriyanto, Heri Kanani, Nufus Kustiningsih, Indar Maulida, Alyssa Shafira Muhammad Triyogo Adiwibowo Nasheh, Muhammad Yusril Priyatna, Aufa Irsyad Pujiastuti, Hendrini Rizqillah, Muhammad Fathi Rochmat, Agus Rudi Hartono Rusdi, Rusdi Septi, Dede Suhendi, Endang