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Environmental and Materials
ISSN : -     EISSN : 30250277     DOI : -
The Environmental and Materials Journal (EAM) is a biannual journal published by the Institute for Advanced Social, Science, and Sustainable Future, Indonesia. This journal is dedicated to issue the most substantial and advanced of original and review articles related with the environmental issues and its related materials. Each submitted article will be carefully and thoroughly examined by a group of professional editors. The Earth’s changing climate and environmental issues need to be urgently addressed and it is a serious challenge for the scientific world. In this regards, the Environmental and Materials Journal seeks to publish high quality articles discussing the environmental problems and the related materials as well as the developed materials to solve the environmental problems. The subjects covered in this journal are: - Environmental issues and its management - Pollutant materials - Material sciences related to the environmental problems solving
Articles 40 Documents
Increasing energy density of vanadium redox flow batteries: A comprehensive review Sabeel Ahmed; Iman Abdullah; Yuni Krisyuningsih Krisnandi
Environmental and Materials Vol. 3 No. 2: (December) 2025
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/eam.v3i2.2025.1828

Abstract

Background: Vanadium Redox Flow Batteries (VRFBs) represent a leading energy storage technology for renewable integration due to their long cycle life, high safety, and flexible scalability. However, their low energy density and high cost continue to limit widespread adoption. This study aims to synthesize and critically evaluate recent advances in enhancing VRFB performance through innovations in electrode materials, electrolyte chemistry, and membrane design. Methods: This study adopts a comprehensive literature review approach, analyzing theoretical and experimental research published in recent years. The review focuses on advancements in nanostructured electrode surfaces, optimized electrolyte formulations, and functional hybrid membranes. Theoretical insights from materials science and electrochemistry were integrated to establish the correlation between structure, performance, and efficiency. Findings: The reviewed studies reveal that nanostructured and heteroatom-doped electrodes enhance redox kinetics and minimize side reactions, while optimized electrolytes with mixed acids and stabilizers improve vanadium solubility and thermal stability. Hybrid polymer–inorganic membranes effectively reduce vanadium ion crossover and maintain high proton conductivity, thereby increasing coulombic and energy efficiencies. Collectively, these advancements improve power output, reduce self-discharge, and enhance long-term cycling performance, moving VRFBs closer to economic feasibility. Conclusion: Advancements in material design and system optimization are pivotal in overcoming the limitations of conventional VRFBs. Continued research on scalable, low-cost materials, electrolyte recycling, and hybrid integration will further promote sustainable energy storage. Novelty/Originality of this article: This review uniquely integrates material-level and system-level perspectives, offering a holistic understanding of how innovations across components collectively advance high-efficiency, cost-effective, and environmentally sustainable VRFB technology for next-generation renewable energy systems.
Recent advancements of carbazoles synthesis: Towards the green synthesis approach Shafrizal Rasyid Atriardi
Environmental and Materials Vol. 3 No. 2: (December) 2025
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/eam.v3i2.2025.1979

Abstract

Background: The importance of carbazoles synthesis had been a motive to study deeper about the synthesis of carbazoles. For the development of carbazoles synthesis, a green synthesis approach became an important aspect that needed to be improved. The sustainable synthesis of carbazoles also plays a role in the reducing the hazardous impact to the environment. Methods: This carbazoles synthesis review was based on the generation of A or B ring in the carbazole molecules that analyzed by retrosynthetic analysis, updating several works from the past 10 years and highlighting the green synthesis approaches of carbazoles. Findings: Some of the green synthesis approaches were reported by the utilization of a green energy sources, mild solvents, and low catalysts loading that were used in the reaction. Non-toxic and non-hazardous material were also preferable to maintain the sustainability of this reaction. These currently developed approaches were inevitably encountered by several limitations, including lower yields and reactivities. Conclusion: Some of the reviews provides an improvement of the results, providing a broad substrate scopes with the moderate-to-good yield using a green synthesis approach. Novelty/Originality of this article: This review were focusing on the development of a green synthesis approach of carbazoles, which never reported in any review before.
Optimizing vanillin and phenol production from benzyl phenyl ether using CoMoO4/H-ZSM-5: A Box-Behnken design approach Irena Khatrin; Duha Rushida Amanullah; Rahmat Wibowo; Russell Francis Howe; Yuni Krisyuningsih Krisnandi
Environmental and Materials Vol. 3 No. 2: (December) 2025
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/eam.v3i2.2025.2161

Abstract

Background: Lignin valorization into high-value chemicals is crucial for sustainable development. This study focused on optimizing the catalytic conversion of benzyl phenyl ether (BPE), a lignin model compound, to vanillin and phenolic compounds. Methods: Hierarchical H-ZSM-5 was synthesized via a dual-template method and subsequently modified by wet impregnation with bimetallic cobalt and molybdenum oxides (CoMoO4/H-ZSM-5). Catalyst properties were thoroughly characterized using various techniques, including XRD, FTIR, XRF, N2-physisorption, and SEM-EDS mapping. Reaction conditions, specifically Co:Mo ratio, temperature, and reaction time, were optimized using the Box-Behnken design (BBD), and product yields were quantified by High-Performance Liquid Chromatography (HPLC). Findings: Characterization confirmed successful catalyst synthesis, organic template removal, and bimetal oxide incorporation without significant structural damage. Catalytic tests demonstrated 100% BPE conversion. The highest experimental vanillin yield achieved was 54.69%. BBD analysis revealed that the interaction between Co:Mo ratio and temperature, as well as the quadratic effect of Co:Mo ratio, were the most influential factors impacting product yields. The optimal parameters for maximizing vanillin and phenolic yield were determined to be a Co:Mo ratio of 3:7, a temperature of 169 °C, and a reaction time of 31 minutes. While the phenolic model showed a reasonable fit (R² = 0.76), the vanillin model exhibited a lower fit (R² = 0.34) with significant lack-of-fit. Conclusion: This research provides crucial insights into the efficient production of high-value chemicals from BPE, offering a comprehensive optimization approach for the CoMoO4/H-ZSM-5 catalytic system. Novelty/Originality of this article: This study represents a novel contribution to lignin valorization.
One-pot catalytic conversion of glucose to 2,5-furandicarboxylic acid over NiO-modified ZSM-5 zeolites: Effects of reaction temperature and solvent ratio Arnia Putri Pratama; Andita Junia Mulyadi; Rahmat Wibowo; Yuni Krisyuningsih Krisnandi
Environmental and Materials Vol. 3 No. 2: (December) 2025
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/eam.v3i2.2025.2642

Abstract

Background: 2,5-Furandicarboxylic acid (FDCA) has gained increasing attention as a key bio-based intermediate for the production of polyethylene furanoate (PEF) and other sustainable polyesters, offering a viable alternative to fossil-derived monomers. Although FDCA is conventionally produced via oxidation of 5-hydroxymethylfurfural (HMF), direct one-pot conversion of glucose remains challenging due to the requirement for integrated catalytic functions and the strong influence of reaction conditions. Hierarchical zeolites modified with transition-metal oxides are promising for one-pot glucose-to-FDCA conversion; however, the effects of reaction temperature and solvent composition have not been systematically evaluated and are examined here using hierarchical ZSM-5, NiO-modified ZSM-5, and NiO catalysts. Methods: Hierarchical ZSM-5 was synthesized via a dual-template method and modified with NiO through an impregnation–spray technique to introduce redox-active sites. The catalysts were characterized using X-ray diffraction, Fourier-transform infrared spectroscopy, nitrogen physisorption, and Scanning Electron Microscope-Energy Dispersive X-Ray to establish correlations between structural, compositional, and textural properties and catalytic performance. Catalytic reactions were conducted at varying temperatures using a γ-valerolactone–water solvent system with different volume ratios. Findings: NiO-modified hierarchical ZSM-5 exhibited superior catalytic performance compared to the parent zeolite and NiO, achieving a maximum FDCA yield of 2.36% at 150 °C with an optimal γ-valerolactone–water ratio of 1:1. Higher FDCA yield over NiO-modified hierarchical ZSM-5 reflects the combined effects of hierarchical porosity, NiO species, reaction temperature, and solvent ratio. Conclusion: This study demonstrates that NiO-modified hierarchical ZSM-5 can promote one-pot glucose-to-FDCA conversion, with reaction temperature and solvent ratio identified as key parameters for performance optimization. Novelty/Originality of this article: This study provides a systematic assessment of the effects of reaction temperature and γ-valerolactone–water solvent ratio on FDCA formation over NiO-modified hierarchical ZSM-5 in a one-pot glucose conversion system, establishing catalyst and process design principles.
Copper foam modified electrodes for CO₂ electroreduction: A study on deposition potential effect and flow cell performance Hanzhola Gusman Riyanto; Lewita Pasaribu; Fathur Rachman; Octaviany Magdalena; Afiten Rahmin Sanjaya
Environmental and Materials Vol. 3 No. 2: (December) 2025
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/eam.v3i2.2025.2649

Abstract

Background: The development of effective electrochemical conversion technologies is imperative due to the rising global CO2 emissions. A promising platform for CO2 reduction to formate is copper electrode, which can stabilize the carbon dioxide radical that is essential for CO2 conversion. Methods: In this work, Cu foam was electrodeposited in situ on a copper plate with sodium citrate acting as a capping agent (CuF@Cu), with variation of potential deposition were 3V and 5V. Findings: The foam structure of Cu in Cu electrode was confirmed with SEM and XRD measurements for both potential deposition variations. Furthermore, CO2 electroreduction was carried out in a flow cell under ideal conditions, which included aeration for 20 minutes, a flow rate of 75 mL min⁻¹, and an applied potential of −0.33 V vs. Ag/AgCl. For formic acid conversion, the Faradaic efficiency rose from 14.18% (Cu bare) to 26.73% (CuF@Cu 3V) which an 88.7% improvement over bare copper. Conclusion: The enhanced performance is attributed to the increased surface area and three-dimensional foam structure, which augments active sites for CO₂ activation. This work demonstrates that simple electrodeposition of copper foam is an effective strategy for improving electrochemical CO₂ reduction efficiency. Novelty/Originality of this article: These findings demonstrate that CuF@Cu makes using this straightforward electrodeposition technique a viable option for CO2 to formate conversion.
Utilization of water hyacinth as a reducing agent in microwave-assisted synthesis of zinc oxide nanoparticles for photocatalytic applications Nugraha Ramadhan; Nathania Safitri Indar Permana; Achmad Bagas Fadillah; Andre Susanto; Muhammad Aulia Rahman Sulaiman
Environmental and Materials Vol. 4 No. 1: (June) 2026
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/eam.v4i1.2026.2771

Abstract

Background: The textile industry is the second largest contributor to industrial pollution worldwide, accounting for about 10% of carbon emissions and 20% of wastewater, mainly from textile dyeing. One of the most widely used dyes is methylene blue, a thiazine-based cationic aromatic dye that threatens aquatic ecosystems and human health. Conventional wastewater treatments are less effective in Indonesia due to high operational costs. Photodegradation using semiconductor photocatalysts offers a simple and affordable alternative. Zinc oxide nanoparticles provide advantages over titanium dioxide, including lower cost and excellent electrical, mechanical, and optical properties. This study aims to synthesize zinc oxide nanoparticles using water hyacinth leaf extract as a natural reducing agent, combined with microwave irradiation to enhance eco-friendly synthesis. Methods: The extract was applied at concentrations of 4%, 8%, and 12%. Characterization using X-ray diffraction, Fourier-transform infrared spectroscopy, and scanning electron microscopy confirmed the formation of zinc oxide nanoparticles. Findings: The nanoparticles displayed average particle sizes of 134.42 nm, 120.54 nm, and 102.64 nm, respectively. Photodegradation performance analyzed by ultraviolet–visible spectrophotometry showed that methylene blue, with maximum absorbance at 664 nm, exhibited significant absorbance reduction after exposure to the nanoparticles, confirming their photocatalytic activity. Conclusion: Water hyacinth-assisted microwave synthesis produces zinc oxide nanoparticles efficiently, offering a low-cost and environmentally friendly solution with strong potential for textile dye wastewater treatment. Novelty/Originality of this article: The originality of this research lies in integrating water hyacinth extract and microwave irradiation, which accelerates nanoparticle synthesis while promoting sustainability, making it particularly suitable for application in developing countries.
Non-linear soil chemical recovery toward a novel ecosystem in post-bauxite mining soils of tropical Sulakhudin
Environmental and Materials Vol. 4 No. 1: (June) 2026
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/eam.v4i1.2026.3613

Abstract

Background: Reclaiming post-bauxite mining landscapes poses complex challenges owing to severe topsoil loss and drastic chemical alteration, yet phase-specific soil recovery trajectories in tropical Southeast Asia remain poorly characterized. This study evaluates the temporal dynamics of nine chemical properties across a post-bauxite reclamation chronosequence at PT ANTAM UBPB, West Kalimantan, Indonesia. Methods: Soil samples were collected from eight sites, one natural forest control and seven reclaimed plots revegetated between 2014 and 2020 with three replicates per site, yielding 24 composite samples. Parameters encompassed pH, organic carbon, total nitrogen, available phosphorus, exchangeable cations, cation exchange capacity, base saturation, and exchangeable iron. Analyses included Pearson correlation, Principal Component Analysis, and K-means clustering validated by Silhouette analysis. Findings: Recovery proceeded through three non-linear phases: destabilization (5–7 years), transition (8–9 years), and initial stabilization (10–11 years). Soil pH showed the strongest recovery, with a mean recovery index of 109%, consistently surpassing the forest baseline. Iron exhibited the most critical deficit, averaging 19.9% recovery with a nadir of 2.0% at year seven, a micronutrient bottleneck not previously documented in tropical bauxite systems. Organic carbon and total nitrogen retained persistent deficits of 44.7% and 35.0%, respectively. The C–Fe coupling (r = 0.784) confirmed that iron mobilization is organically mediated, while PCA indicated that stabilization-phase soils occupy a distinct geochemical equilibrium separated from the forest reference. Conclusions: Post-bauxite recovery stabilizes into a novel ecosystem state with permanent deficits in iron, carbon, and nitrogen. The transition window at 8–9 years represents the optimal period for organic amendments and chelated iron applications to redirect the trajectory toward functional productivity. Novelty/Originality of this article: Providing the first quantitative evidence that recovery follows a non-linear, phase-dependent pathway converging toward a novel ecosystem state rather than the pre-mining forest baseline.
Design of CA/PEG composite membranes for nanofiltration water purification kit: Material optimization and microbiological efficacy Fina Nurul Arifah; Eka Cahya Prima; Andhika Baruri; Ikmanda Nugraha
Environmental and Materials Vol. 4 No. 1: (June) 2026
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/eam.v4i1.2026.3736

Abstract

Background: Access to microbiologically safe water is a critical challenge in post-disaster conditions, where surface water is often heavily contaminated by pathogenic microorganisms. Methods: This study adopts a comprehensive approach by first characterizing the microbiological load of post-flood well water using the Most Probable Number (MPN) method to establish filtration targets. Subsequently, a CA/PEG composite membrane was synthesized via a phase inversion technique, with PEG functioning as a porogen to enhance hydrophilicity. Five PEG loadings (1, 3, 5, 7, and 9% w/w) were screened using the immersion-precipitation phase inversion method; surface wettability was measured at five locations per membrane by the sessile drop method (5 µL deionised water, contact angle goniometer). The standard three-stage presumptive–confirmed–completed MPN procedure was applied to the collected post-flood well water samples. Findings: Field analysis of post-flood well water samples revealed a critical contamination level of 210 MPN/100 ml. In response, the synthesized 9% CA/PEG formulation was identified as the optimal core material, exhibiting superior super-hydrophilic properties (Contact Angle: 55.59°). Based on these material characteristics and the proposed multi-barrier design, the system is engineered to reduce Coliform contamination to <3.0 MPN/100 ml, complying with WHO and Indonesian standards (Permenkes No. 492/2010). Conclusion: As its primary contribution, this study formulates an evidence-based design for a portable water-filtration kit featuring a multilayer purification system consisting of a pre-filter, synthesized nanofiltration membrane, and UV sterilization as an integrated approach to producing microbiologically safe water. Novelty/Originality of this article: This conceptual design provides a strong scientific foundation for prototype development in subsequent research, while also demonstrating the potential of a technology that is not only technically effective but also aligned with the principle of Hifz al-Nafs within Maqashid al-Shariah and supportive of SDG 6 through the provision of a sustainable and accessible water-purification solution in emergency conditions. Note that the reported microbiological efficacy represents a projected design target; prototype-scale field validation remains the essential next step.
Baseline study of per- and polyfluoroalkyl substances (PFAS) occurrence in surface raw water and treated drinking water Okta Lian Atikah; Haruki Agustina; Tri Edhi Budhi Soesilo
Environmental and Materials Vol. 4 No. 1: (June) 2026
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/eam.v4i1.2026.3772

Abstract

Background: Per- and polyfluoroalkyl substances (PFAS) are emerging contaminants that have become a global concern due to their adverse environmental and health impacts. However, information regarding PFAS contamination in river-derived drinking water systems in developing countries, including Indonesia, remains limited. This study aimed to analyze 19 PFAS compounds in raw water, treated drinking water, and Reverse Osmosis (RO) reject water from the X DWTP, Jakarta, Indonesia, and evaluate its potential human risk and mitigation strategies. Methods: Water samples were analyzed using LC-MS/MS. Findings: Nine PFAS detected with ∑PFAS concentrations reaching 758.94 and 1219.35 ng/L in raw and drinking water, respectively. The RO unit effectively removed long-chain PFAS compounds, particularly PFOS and PFOA, highlighting the importance of advanced treatment technologies in reducing potential human exposure risks. In contrast, PFBA remained substantially high in treated drinking water and exceeded the drinking water threshold of the European Union (EU). Conclusion: These findings emphasize the importance of strategic PFAS management through source-control mitigation, establishment of drinking water standards, and implementation of Best Available Techniques (BAT). Novelty/Originality of this article: This study provides the first baseline data on PFAS contamination in Jakarta’s surface water-derived drinking water supporting future PFAS monitoring and mitigation efforts.
Estimating groundwater availability using the electromagnetic very low frequency (EM-VLF) method Diah Sabatini Sitiningrum; Hayati Sari Hasibuan; Yuki Mahardhito Adhitya Wardhana
Environmental and Materials Vol. 4 No. 1: (June) 2026
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/eam.v4i1.2026.3794

Abstract

Background: The coastal area of North Jakarta faces serious risks of groundwater table decline, seawater intrusion, and water quality degradation due to continuous groundwater extraction. Previous studies indicate that the aquifer system in North Jakarta consists of heterogeneous coastal alluvial deposits, including sand, silt, clay, and gravel. This condition causes groundwater potential to vary across locations. This study aims to analyze the potential availability of groundwater in Kalibaru Urban Village, Kampung Susun Akuarium Penjaringan, and Rusunawa Marunda. Methods: This study applied the Very Low Frequency Electromagnetic (EM-VLF) interpretation method to identify saturated zones beneath the surface. Field data included groundwater table depth, aquifer thickness, lithology, permeability factors, specific yield, salinity, and well measurements. Findings:  Kalibaru Urban Village shows the highest estimated groundwater potential among the three sites, with a potential groundwater-bearing zone at 12–45 m depth and a Darcy-based relative total of 51.29 m³/day. Rusunawa Marunda also shows potential groundwater-bearing zones at approximately 42–59 m. The variation in estimated groundwater-flow potential is associated with differences in interpreted depth, thickness, lithology, specific yield, and EM-VLF-derived salinity indicators. Conclusion: Groundwater bearing conditions remain locally indicated at the three study sites. However, groundwater use should be carefully limited because coastal areas are vulnerable to salinity, contamination, seawater intrusion, and groundwater-table decline. Government agencies and local communities need to strengthen groundwater-level monitoring, direct water-quality testing, pumping control, piped-water services, and rainwater harvesting. Novelty/Originality of this article: This study provides an EM-VLF-based assessment of groundwater potential at three coastal locations in North Jakarta. It also connects subsurface technical findings with the need for site-specific groundwater management strategies.

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