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Thahirah Arief
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INDONESIA
Journal of Green Chemical and Environmental Engineering
Published by Candela Edutech Indonesia
ISSN : -     EISSN : 30902568     DOI : https://doi.org/10.63288/jgcee.v1i1.1
Core Subject : Science, Social, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry Engineering Environmental Science Materials Science & Nanotechnology
Aim and Scope : ✅ Green Chemical Processes ✅ Renewable Energy Technologies ✅ Waste Management and Valorization ✅ Pollution Control and Mitigation ✅ Sustainable Materials ✅ Sustainable Process ✅ Food Chemistry ✅ Environmental Risk Assessment ✅ Cleaner Production and Industrial Ecology ✅ Water and Wastewater Treatment ✅ Climate Change Mitigation ✅ Environmental Chemistry ✅ Biochemistry and Biotechnology ✅ Education in Chemistry
Arjuna Subject : Teknik Kimia (semua kategori) - Kimia Proses dan Teknologi
Articles 15 Documents
 1   2 
Adsorption of Cadmium Metal in Liquid Waste Using Adsorbent Product of Pyrolysis of Teak Wood Biomass Waste Hamzah Aliah, Putri Pratiwi; Putra Sakke, Donvito Andrew; Hamid, Syarwan
Journal of Green Chemical and Environmental Engineering Vol. 1 No. 1 (2025): Journal of Green Chemical and Environmental Engineering
Publisher : Candela Edutech Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63288/jgcee.v1i1.1

Abstract

Liquid waste containing cadmium metal has the potential to be dangerous if not handled properly. One effort to reduce the concentration of cadmium metal in liquid waste is by the adsorption method. Teak sawdust can be processed into charcoal using pyrolysis techniques. Furthermore, charcoal can be activated to be used as a bioadsorbent in liquid waste containing cadmium. The purpose of this study was to determine the mass ratio and optimum contact time of teak sawdust bioadsorbent in reducing the concentration of cadmium metal in liquid waste in the nickel industry. The study was conducted by pyrolyzing teak sawdust waste. The resulting charcoal was then activated. Furthermore, 50 mL of liquid waste containing cadmium was mixed with bioadsorbent and then adsorbed in time variations of 30, 60, 90, 120, 150, 180 minutes with the ratio of active mass to liquid analysis wastewater respectively 0.5g: 50mL, 1g: 50mL, 1.5g: 50mL, 2g: 50mL, and 2.5g: 50mL. After that, the Analysis wastewater was filtered with filter paper and the filtrate was analyzed for cadmium metal content using Atomic Absorption Spectrophotometry (AAS). The results showed that at a mass ratio of bioadsorbent and cadmium liquid waste of 200mg: 50 mL at 150 minutes, the value of the absorbed Cadmium metal content was 0.1845 mg/L or 98.8% of cadmium was absorbed on the bioadsorbent. Bioadsorbent from teak sawdust waste has the potential to be used to reduce the levels of Cadmium metal in liquid waste.
Economic Potential of the Process of Polyphenol Extraction from Cocoa Pod Husk (Theobroma cacao L.) Using the Ultrasonic-Assisted Extraction Method Putri, Rachel Mega Jessica
Journal of Green Chemical and Environmental Engineering Vol. 1 No. 1 (2025): Journal of Green Chemical and Environmental Engineering
Publisher : Candela Edutech Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63288/jgcee.v1i1.2

Abstract

Polyphenols are phytochemical substances in plants that can work as antioxidants which can inhibit oxidation and the formation of free radicals. Polyphenols can be found in almost all plants, like cocoa pod  husk. This research was conducted to determine the feasibility of the polyphenol extraction process from cocoa pod husk using the ultrasonic-assisted extraction method from an economic perspective based on the effect of drying the material and the type of solvent used. The solvents used were distilled water, 96% ethanol and 95% methanol on materials without drying and materials with drying to a water content of ±11%. From the research results, optimum extraction results were obtained for the samples by drying the material and using distilled water solvent at an extraction time of 60 minutes, which produced a yield of 7.95% and a phenolic content of 22.01% or 220.1248 mg gae/g. From an economic perspective, this process provides a profit of IDR 539,683.05/kg. The extract yield and economic benefits obtained from the ultrasonic-assisted extraction method are greater than from the maceration method
The Effect of pH Variations and Aluminum Sulfate Coagulant Dosage on Reducing Turbidity in Salupangkang Tua River Water Kurniawan, Hendra; Fadillah, Nurul
Journal of Green Chemical and Environmental Engineering Vol. 1 No. 1 (2025): Journal of Green Chemical and Environmental Engineering
Publisher : Candela Edutech Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63288/jgcee.v1i1.3

Abstract

This research was carried out using coagulation and flocculation methods. By using a varying pH series, namely 1 – 14 and also varying coagulant doses, namely 10 ppm, 20 ppm, 30 ppm and 40 ppm. The solution whose pH has been adjusted is then stirred using a flocculator with the addition of a coagulant for fast stirring at 100 rpm for 3 minutes, then a flocculant is added for slow stirring at 30 rpm for 3 minutes. After stirring, the turbidity of the solution was measured using a turbidimeter. The research show that pH and coagulant dosage parameters significantly influence the coagulation and flocculation process in water treatment at palm oil mills. The results indicated that the optimal pH for coagulation using aluminum sulfate (Al₂(SO₄)₃) is 7, with an effective coagulant dosage ranging from 30 ppm.
Biodiesel Production from Palm Oil with Heterogeneous Catalysts Jonathan; Rumpaisum, Samuel Gidan; Fathoni, Rif’an
Journal of Green Chemical and Environmental Engineering Vol. 1 No. 1 (2025): Journal of Green Chemical and Environmental Engineering
Publisher : Candela Edutech Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63288/jgcee.v1i1.4

Abstract

Rice production in East Kalimantan Province during 2023 reached around 215,290 tons/year of milled dry grain. Rice is one of the main agricultural products that produce waste in the form of rice husks. Rice husk is stillNot well utilized so that it only becomes a pile of agricultural waste. Rice husk ash contains compounds that can be used as catalyst support, including SiO2. This study aims to determine the effect of rice husk ash catalyst from the KOH impregnation method as a catalyst for making biodiesel from conventional palm oil. Transesterification was conducted on palm oil with the ratio of catalyst mass to oil volume (10%, 15%, 20%). Biodiesel production from palm oil using KOH impregnated catalyst with 2N concentration and 20% catalyst concentration produced the highest yield of 86.3%. Viscosity and density of the results obtained meet the standards.
Advances in Wind Turbine Technology: Efficiency and Application in Renewable Energy Hadi, Edi Rahman; Ramadhan, Muhammad Ilham
Journal of Green Chemical and Environmental Engineering Vol. 1 No. 1 (2025): Journal of Green Chemical and Environmental Engineering
Publisher : Candela Edutech Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63288/jgcee.v1i1.5

Abstract

Electricity is a crucial element in daily life as it supports various human activities. However, many remote areas remain unconnected to the national power grid due to long distances from PLN’s network, resulting in high electricity provision costs. This study employs a qualitative approach by identifying and analyzing literature related to advancements in wind turbine technology, its efficiency, and its application in renewable energy. The review is based on sources from scientific journals, books, research reports, and conference proceedings. Wind energy holds great potential as an environmentally friendly renewable energy solution, particularly in remote areas with low wind speeds, such as Indonesia. Modern wind turbine technology continues to evolve, incorporating aerodynamic design, pitch control systems, and variable speed mechanisms to enhance energy conversion efficiency. Innovations such as the Darrieus turbine, vertical axis wind turbine (VAWT), and the "Antasena" turbine provide effective solutions for low-wind conditions, making them suitable for 3T (Frontier, Outermost, and Disadvantaged) regions. The integration of wind turbines with other renewable energy sources, such as solar panels or micro-hydro systems, along with the use of storage batteries, enhances electricity supply stability in remote areas. Despite challenges such as high investment costs and environmental impacts, proper mitigation strategies can minimize these negative effects. A holistic approach that involves local communities in wind energy projects also contributes to social and economic sustainability.
Microalgae as a Feedstock for Carbon Capture Technology Abdi, Fa'izah Amadia; Falah, Ismi Arnadia
Journal of Green Chemical and Environmental Engineering Vol. 1 No. 2 (2025): Journal of Green Chemical and Environmental Engineering
Publisher : Candela Edutech Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63288/jgcee.v1i2.7

Abstract

Microalgae have emerged as a promising feedstock for carbon capture technology due to their high carbon sequestration efficiency and potential applications in bioenergy and bioproducts. This study aims to assess the prospects and implementation of microalgae-based carbon capture and storage (CCS) systems in mitigating climate change. The research involves a comprehensive review of microalgae cultivation methods, carbon capture efficiency, and conversion technologies such as biochar production, biofuel synthesis, and direct carbon sequestration in industrial applications. A systematic literature analysis was conducted to evaluate the effectiveness, scalability, and economic feasibility of microalgae-based solutions in mitigating climate change. The study also evaluates key factors influencing the scalability of microalgae-based systems, including biomass productivity, nutrient requirements, and technological advancements in harvesting and processing. Results indicate that microalgae exhibit high CO₂ absorption capacity and can be integrated into existing carbon capture frameworks with minimal land and resource constraints. Additionally, advancements in biorefinery approaches have enhanced the economic feasibility of microalgae-based negative carbon technologies. However, challenges such as high operational costs, energy-intensive processing, and regulatory barriers remain critical factors affecting large-scale adoption. In conclusion, microalgae offer a viable solution for negative carbon technologies, but their successful implementation requires interdisciplinary collaboration, technological improvements, and supportive policies to enhance efficiency and cost-effectiveness
Review of Household Wastewater Treatment with Multistage Filters and Water Hyacinth Bioremediation Jenar, Nur Alya; Fatimah, Fetti
Journal of Green Chemical and Environmental Engineering Vol. 1 No. 2 (2025): Journal of Green Chemical and Environmental Engineering
Publisher : Candela Edutech Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63288/jgcee.v1i2.8

Abstract

Household wastewater in Indonesia is relatively unaffordable by waste treatment technology, as well as the high cost of existing waste technology, so a cheap and easy-to-implement household waste treatment system is needed that can provide optimal results. One sustainable approach that can be applied is a combination of multi-level sieve and bioremediation using water hyacinth (Eichhornia crassipes). This study aims to review the effectiveness of the method in reducing the content of major pollutants, such as total suspended solids (TSS), biochemical oxygen demand (BOD), chemical oxygen demand (COD), as well as nitrogen and phosphorus levels in domestic wastewater. Cascade filters function to filter suspended particles and reduce pollutant loads, while water hyacinths play a role in phytoremediation by absorbing excess organic matter and nutrients. Based on various studies that have been carried out, this method has been proven to be able to significantly reduce pollutant levels and improve the quality of treated water. The effectiveness of the system depends on the design of the sieve, the density of hyacinth plants, as well as the environmental conditions in which the system is applied. With relatively low costs and environmentally friendly technology, this method can be an alternative solution for areas that do not yet have an integrated waste treatment system. However, further studies are needed to optimize the design of the system and evaluate the long-term impact on the environment.
Synthesis and Characterization of Composite Emulsifier from Periwinkle Shell and Gum Arabic applied in Oil-Water Emulsification Process Balogun, Ismail O.; Dada, Ebenezer O.; Salam, Kazeem
Journal of Green Chemical and Environmental Engineering Vol. 1 No. 2 (2025): Journal of Green Chemical and Environmental Engineering
Publisher : Candela Edutech Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63288/jgcee.v1i2.6

Abstract

The Synthetic surfactants employed in the management of oil-polluted water through the emulsification process usually lead to introducing secondary pollutants with more toxic effects on the environment. However, the need to safely mitigate the environmental impact of oil pollution has led to the increasing demand for eco-friendly, bio-based materials for the treatment of oil-polluted water. The effect of Periwinkle Chitosan-Gum Arabic (PSC-GA) composite emulsifier on the stability of oil-water emulsion (10% v/v) was investigated. Chitosan was extracted from the Periwinkle shell through the sequential order of decolorization, demineralization, deproteinization, and deacetylation with 40% NaOH (DCMPA) resulting in a yield of 5.96%. The emulsifier was formed with mixtures of chitosan and gum Arabic at 0%, 1%, and 2% each dissolved in 1%, 2%, and 3% aqueous acetic acid (AA) solution in a randomized experimental design using Box Behnken Design (BBD) under Response Surface Methodology (RSM) of Design Expert (Version 13). An optimum composition of 1.10% PSC, 1.54% GA, and 1.51% AA for the emulsifier with 97.6% stability was obtained from the optimization of the emulsion stability index. This study shows that PSC-GA composite is an effective emulsifier capable of producing stable emulsion with CMC of 0.02 g/l at 0.039 N/m and  Zeta potential of over -36 mV which could be applied for the emulsification process in the oil-polluted environment to prevent oil migration.
Sustainable Research and Technological Development on Bio-Energy Omer, Abdeen Mustafa
Journal of Green Chemical and Environmental Engineering Vol. 1 No. 2 (2025): Journal of Green Chemical and Environmental Engineering
Publisher : Candela Edutech Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63288/jgcee.v1i2.9

Abstract

This paper discusses a comprehensive review of biomass energy sources, environment and sustainable development. This includes the biomass energy technologies, energy efficiency systems, energy conservation scenarios, energy savings and other measures necessary to reduce climate change. Energy use reductions can be achieved by minimising the energy demand, by rational energy use, and by recovering heat. The increased availability of reliable and efficient energy services stimulates the use of more green energies. The adoption of green or sustainable approaches to the way in which society is run is seen as an important strategy in finding a solution to the energy problem. The key factors to reducing and controlling CO2 emissions to the atmospheric sink, which is the major contributor to global warming, are the use of alternative approaches to energy generation and the exploration of how these alternatives are used today and may be used in the future as green energy sources.
The Effect of Impurities on Nickel Content In Ore Samples Using Oven and Roasted Preparation Methods Aqilah Az zahirah; Oktaviana, A. Eka Nur Afni
Journal of Green Chemical and Environmental Engineering Vol. 1 No. 2 (2025): Journal of Green Chemical and Environmental Engineering
Publisher : Candela Edutech Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63288/jgcee.v1i2.10

Abstract

This research was conducted using two sample drying methods: the oven method and the roasting method. Elemental analysis was carried out using the X-Ray Fluorescence (XRF) Epsilon 4 instrument. The study investigated the influence of impurity metals on nickel (Ni) content, particularly the presence of silica (SiO₂) and magnesium oxide (MgO). The results showed that silica (SiO₂) plays a significant role in affecting nickel content. The higher the silica content, the lower the detected nickel content. This is supported by negative correlation coefficients of -0.9725 for the oven method and -0.9090 for the roasting method. The coefficients of determination were 94.58% and 82.62%, respectively, indicating a strong relationship between silica and nickel content. In addition, the relationship between MgO and Ni also showed a negative trend. An increase in MgO content was followed by a decrease in Ni content. The correlation coefficients were -0.9678 for the oven method and -0.9651 for the roasting method, with coefficients of determination of 93.66% and 93.13%. These results confirm a very strong influence of MgO on Ni content. A t-test was conducted to determine whether there was a significant difference between the two drying methods in nickel content measurement. The calculated t-value was 0.013, while the critical t-value was 2.18. Since the calculated value is lower, the null hypothesis (H₀) is accepted, indicating no significant difference between the oven and roasting methods

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