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INDONESIA
Jurnal Inovasi Teknik Kimia
Published by Universitas Wahid Hasyim Semarang
ISSN : 2527614X     EISSN : 25415891     DOI : http://dx.doi.org/10.31942/inteka
Core Subject : Engineering,
Chemical Engineering, Chemistry & Bioengineering
The Inovasi Teknik Kimia (INTEKA) journal focuses upon aspects of chemical engineering: chemical reaction engineering, environmental chemical engineering, material and food engineering . The INTEKA is an research journal and invites contributions of original and novel fundamental research. The journal aims to provide a forum for the presentation of original fundamental research, interpretative reviews and discussion of new developments in chemical engineering. Papers which describe novel theory and its application to practice are welcome, as are those which illustrate the transfer of techniques from other disciplines. Reports of carefully executed experimental work, which is soundly interpreted are also welcome. The overall focus is on original and rigorous research results which have generic significance.
Arjuna Subject : Teknik Kimia (semua kategori) - Teknik Kimia (Lain-Lain)
Articles 302 Documents
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THE SOLVENT OPTIMIZATION IN METOPROLOL DERIVATIZATION REACTION WITH 1-FLUORO-2,4-DINITROBENZENE Nugraheni, Bekti; Martono, Sudibyo; Sugiyanto, Sugiyanto
Jurnal Inovasi Teknik Kimia Vol. 10 No. 3 (2025): July | INTEKA - Jurnal Inovasi Teknik Kimia
Publisher : Fakultas Teknik Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/inteka.v10i3.14584

Abstract

Metoprolol, or 1-[4-(2-Methoxyethyl)phenoxy]-3-[(1-methylethyl)amino]-2-propanol, is a β1-adrenergic receptor antagonist that is often used to treat cardiovascular disorders such as hypertension, arrhythmia, and heart failure. Metoprolol has an A value of 1% 1cm = 52a in acid solution at a wavelength of 274 nm, where the molar absorptivity value (Ԑ) is 1390.48 L/(mol . cm) so that metoprolol gives weak absorption in the UV region (Ԑ ~ 1000 L/(mol . cm)). This study aims to optimize the solvent in the derivatization reaction of metoprolol with 1-fluoro-2,4-dinitrobenzene (FDNB). Under optimum conditions, the metoprolol reaction should form a derivatization product with FDNB. Metoprolol derivatization reactionin methanol solvent is optimal at pH 10.0 in borate buffer, with a warm-up at room temperature for 80 minutes. Analysis of metoprolol by High Performance Liquid Chromatography (HPLC) using a Chromolith RP-18e column (100 mm x 4.6 mm; 2 µm) and phase acetonitrile: buffer acetate (0.2 M, pH 3.0) = 70:30 with a flow rate of 1.0 ml/min. Separation of metoprolol-DNB occurs at a time retention of 7,856 minutes, with an analysis time of 10 minutes. Reaction-derivatization of metoprolol in methanol solvent; the optimum condition was pH 10.0. It was concluded that metoprolol in methanol solvent was more effective because the derivatization reaction with FDNB did not require heating. Optimizing the metoprolol content determination method using the FDNB solution derivatizer in acetonitrile showed that the optimal mobile phase was a mixture of acetonitrile and 0.2 M acetate buffer (30:70, pH 3.0), with a flow rate of 1.0 mL/minute.
PEMBUATAN PUPUK ORGANIK PADAT BERBASIS KULIT DURIAN DAN STARDEC DENGAN METODE COMPOSTING AEROB Suprihatin; Sulistya, Radithya Bagus; Silalahi, Jevanya Nathanael
Jurnal Inovasi Teknik Kimia Vol. 10 No. 3 (2025): July | INTEKA - Jurnal Inovasi Teknik Kimia
Publisher : Fakultas Teknik Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/inteka.v10i3.15018

Abstract

This study aims to examine the effects of Stardec bioactivator dosage and composting time on the nutrient quality of solid organic fertilizer derived from durian peel waste. The method employed was aerobic composting using an in-vessel system with variations in Stardec dosage and composting duration. The results showed that increasing the Stardec dosage and composting period significantly enhanced the macronutrient content. The optimal condition was achieved by adding 15 grams of Stardec on the 15th day, resulting in organic carbon of 26.29%, total nitrogen of 4.76%, total phosphorus (P-total) of 3.97%, and total potassium (K-total) of 4.43%. The resulting C/N ratio ranged between 5–10, indicating good compost maturity and readiness for soil application. All final parameters, including pH and moisture content, complied with the quality standards of SNI 7763-2024, confirming that the product is suitable for use as a safe and nutrient-rich organic fertilizer for soil improvement.
Potential of Marine Fish Viscera–Derived Starter Microorganisms for Biogas Production Using a Mixed Biomass of Salvinia molesta and Corn Husk (Zea mays) Suhirman, Suhirman; Sela Kong
Jurnal Inovasi Teknik Kimia Vol. 11 No. 2 (2026): APRIL | INTEKA - Jurnal Inovasi Teknik Kimia
Publisher : Fakultas Teknik Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/inteka.v11i2.15048

Abstract

Cilegon City, Banten Province, Indonesia, generates abundant organic waste in the form of marine fish viscera (MFV) from fish-cleaning activities in traditional markets, which remains largely underutilized. This study aimed to evaluate the potential of MFV as an alternative bacterial starter for biogas production through the co-digestion of water hyacinth (KIM) and corn husk (KJ) biomass. Prior to digestion, KIM and KJ were physically pretreated to a particle size of 50–60 mesh, then chemically pretreated with 0.1 M NaOH. The pretreated biomass was then oven-dried at 60 °C for 24 h. Various KIM: KJ mass ratios were investigated, including 10:0, 8:2, 6:4, 4:6, 2:8, and 0:10, with a constant total solids (TS) content of 10 g. In addition, the biomass-to-MFV starter ratios were varied to 1:0.5, 1:1, 1:1.5, and 1:2. Anaerobic batch fermentation was conducted at an initial pH of 8, with 160 mL of distilled water added per 10 g TS. Methane content was analyzed using a Shimadzu GC-8A equipped with a thermal conductivity detector (TCD) at the National Research and Innovation Agency (BRIN), Indonesia. Biogas volume was measured at two-day intervals over a 50-day fermentation period. The results demonstrated that the optimum biomass composition was achieved at a KIM:KJ ratio of 4:6, yielding a biogas production of 65 mL g⁻¹ TS. The optimum biomass-to-starter ratio of 1:1 resulted in a total biogas volume of 986 mL, a biogas yield of 99 mL g⁻¹ TS, and an organic matter conversion efficiency of 65% after 50 days of fermentation, with methane content reaching 60% (v/v). This study introduces a novel approach by demonstrating, for the first time, the use of marine fish viscera as a bacterial starter in the co-digestion of KIM and KJ, highlighting its significant potential to enhance biogas yield while valorizing marine processing waste.
Green Synthesis dan Karakterisasi Nanopartikel Emas Sebagai Antioksidan Peredam Radikal Bebas Paramita, Denok Risky Ayu; Siddiq, Hadi Barru Hakam Fajar; Lasmono, Roisa Zakia Zahra
Jurnal Inovasi Teknik Kimia Vol. 11 No. 2 (2026): APRIL | INTEKA - Jurnal Inovasi Teknik Kimia
Publisher : Fakultas Teknik Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/inteka.v11i2.13258

Abstract

Gold nanoparticles (AuNPs) have significant potential in healthcare due to their antioxidant activity. However, conventional physical and chemical synthesis methods are costly and generate hazardous waste. Green synthesis offers a more economical and environmentally friendly alternative. In this study, katuk leaf extract was used for the first time as a reducing agent in the green synthesis of AuNPs, owing to its rich phenolic content. The aim of this research was to synthesize and characterize AuNPs using katuk leaf extract and to evaluate their antioxidant activity against free radicals. UV–Vis spectrophotometry showed an optimum wavelength at 530 nm, indicating the formation of wine-red AuNPs. SEM analysis revealed spherical particles with sizes ranging from 28 to >100 nm. XRD results, based on JCPDS No. 04-0784, confirmed a face-centered cubic (FCC) crystalline structure with Bragg reflections at 2θ values of 38.03°, 44.15°, 64.25°, and 77.25°, corresponding to (111), (200), (220), and (311) planes. DPPH analysis yielded an IC₅₀ value of 53.37, indicating strong antioxidant activity and potential applications in the health sector.
Efektivitas Metode Fenton Dalam Pengolahan Limbah POME (Palm Oil Mill Effluent) Novenjani, Meuthia; Masriatini, Rully; Husnah, Husnah
Jurnal Inovasi Teknik Kimia Vol. 10 No. 3 (2025): July | INTEKA - Jurnal Inovasi Teknik Kimia
Publisher : Fakultas Teknik Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/inteka.v10i3.14615

Abstract

Palm Oil Mill Effluent (POME) is a liquid waste generated from palm oil processing that contains high concentrations of organic compounds and may cause environmental pollution if not properly treated. This study aims to evaluate the effectiveness of adding Fenton reagent in reducing COD, BOD, TSS, and oil and grease levels in POME wastewater. The molar ratio variations of FeSO₄ and H₂O₂ applied were 1:20, 1:40, and 1:60, with mixing times of 20 and 30 minutes at an optimum pH of 3 and a stirrer speed of 20 rpm. The results indicate that the 1:60 ratio with a mixing time of 30 minutes achieved the greatest reduction: COD decreased from 1028 mg/L to 87.4 mg/L, BOD decreased from 512 mg/L to 178 mg/L, TSS decreased from 454 mg/L to 118 mg/L, and oil and grease decreased from 223 mg/L to 17 mg/L. All parameters met or exceeded the wastewater quality standards set by the Indonesian Ministry of Environment Regulation No. 5 of 2014. The Fenton method is proven to be effective and environmentally friendly.
Pemanfaatan Limbah Kulit Buah Sebagai Ecoenzyme Untuk Pengolahan Palm Oil Mill Effluent Elisma, Netri; Armin, M Ikhlas; Miftahurrahmah, Miftahurrahmah; Aini, Apsari Puspita; Putri, Melysa
Jurnal Inovasi Teknik Kimia Vol. 10 No. 3 (2025): July | INTEKA - Jurnal Inovasi Teknik Kimia
Publisher : Fakultas Teknik Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/inteka.v10i3.14676

Abstract

The palm oil industry plays a crucial role in the global economy, particularly in Indonesia as one of the leading producers of palm oil. However, its production process generates a substantial amount of liquid waste known as Palm Oil Mill Effluent (POME), which is rich in organic pollutants, including Biological Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Total Suspended Solids (TSS), as well as residual oil and grease. If not properly managed, POME can lead to environmental pollution and disrupt surrounding ecosystems. Conventional treatment methods, such as anaerobic ponds, induced air flotation, and coagulation–flocculation, present several limitations, including prolonged processing time and high operational costs. As an alternative, the use of eco-enzyme derived from the fermentation of organic waste, such as fruit peels, offers a more efficient and environmentally friendly solution. Eco-enzyme contains active enzymes, including lipase, protease, and amylase, which are effective in degrading complex organic compounds in POME, thereby naturally reducing BOD, COD, and TSS levels. Furthermore, the presence of organic acids and phenolic compounds in eco-enzyme contributes to pH neutralization and facilitates the adsorption of heavy metals in POME. This study aims to explore the potential of eco-enzyme as a sustainable technology for POME treatment, while also supporting the principles of zero waste and circular economy within the palm oil industry.
Uji Efektivitas Zeolit Alam Lampung Sebagai Agen Antibakteri Masker Wajah Terhadap Propionibacterium acnes Herlina, Idra; Siregar, Shekinah Glory Aurellia; Putra, Roja Riliyanda; Ismail, Anna Azzahra; Purba, Tiarmauli Natalia; Ramadhani, Ashyfa; Wulanda, Aditya Ayu; Mariyam; Saputra, Muhammad Yogi; Safitra, Edwin Rizki
Jurnal Inovasi Teknik Kimia Vol. 11 No. 2 (2026): APRIL | INTEKA - Jurnal Inovasi Teknik Kimia
Publisher : Fakultas Teknik Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/inteka.v11i2.15080

Abstract

Acne vulgaris is a common skin disorder caused by clogged pores and infection by Propionibacterium acnes. The use of synthetic chemicals in skincare products often leads to side effects, highlighting the need for safer and eco-friendly natural alternatives. Natural zeolite, particularly Lampung Natural Zeolite (ZAL), has potential as an antibacterial agent due to its porous structure and adsorption capacity. This study evaluates the effectiveness of ZAL as an active ingredient in clay mask formulations against P. acnes. ZAL was activated and purified, then formulated into masks with varying concentrations (2.5 g, 5 g, and 7.5 g). Characterization was conducted using IR, XRD, and SEM, while antibacterial activity was tested using the agar diffusion method. Activation improved crystallinity and increased silanol (Si–OH) groups, enhancing antibacterial performance. The 5 g zeolite formulation showed the largest inhibition zone, indicating optimal effectiveness. Overall, ZAL demonstrates strong potential as a natural antibacterial agent for facial mask products.
Pengaruh Variasi Komposisi BCTMP (Bleached Chemi Thermo Mechanical Pulp) dan LBKP (Leaf Bleached Kraft Pulp) Terhadap Karakteristik Kertas Mengunakan Metode Handsheet Ariani, Widia Zulfa; Nurlela, Nurlela; Wahyudi, Agus
Jurnal Inovasi Teknik Kimia Vol. 11 No. 1 (2026): JANUARI | INTEKA - Jurnal Inovasi Teknik Kimia
Publisher : Fakultas Teknik Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/inteka.v11i1.15084

Abstract

Indonesia has great potential to provide raw materials that support the sustainability of the pulp and paper industry. Global paper consumption continues to increase every year. That is, around 394 million tons per year. To maintain its competitiveness, paper industry producers continue to innovate to reduce production costs without ignoring paper quality. One strategy implemented is to eliminate the use of long fiber (NBKP), which is more expensive, and to replace some of the short-fiber chemical pulp (LBKP) with other, more economical raw materials, such as BCTMP (Bleached Chemi Thermo Mechanical Pulp). Therefore, the author conducted a study on the Effect of Variations in BCTMP and LBKP Composition on paper characteristics. The method used in this study is the handsheet method. This study aims to determine the effects of BCTMP and LBKP composition on paper characteristics and to identify the optimal BCTMP + LBKP composition. Based on the results of the study, it can be concluded that the higher the BCTMP composition in the pulp mixture, the higher the Thickness, bulk, and opacity values ​​produced. Conversely, the higher the BCTMP composition in the pulp mixture, the lower the Tensile strength and Brightness values ​​produced. Furthermore, the composition of 90% LBKP + 10% BCTMP yields the best results compared to the others. This formulation is recommended for use in paper production to improve paper quality
Penangkapan Karbon Dioksida Berbasis Gliserol Sebagai Solusi Berkelanjutan Untuk Mitigasi Karbon: Review Nuryoto, Nuryoto; Ekasari, Ekasari; Agustina, Sri; Damayanti, Astrilia
Jurnal Inovasi Teknik Kimia Vol. 11 No. 2 (2026): APRIL | INTEKA - Jurnal Inovasi Teknik Kimia
Publisher : Fakultas Teknik Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/inteka.v11i2.15155

Abstract

Carbon dioxide (CO₂) capture technology continues to advance in line with global commitments to emission reduction. Glycerol, an abundant by-product of the biodiesel industry, has potential as an alternative absorbent due to its low cost, biodegradability, and low vapor pressure. This review aims to analyze the performance of glycerol-based CO₂ capture by evaluating the effects of temperature, pressure, gas flow rate, and solution concentration on process efficiency, as well as identifying research gaps for further development. In general, increasing operating parameters enhances the mass transfer coefficient and CO₂ capture efficiency up to an optimum limit, beyond which performance declines. The addition of solvents such as water and monoethanolamine (MEA) to glycerol has been shown to improve capture efficiency from 27.31% to 64.33%, although it may lead to the formation of by-products. Future work requires further laboratory-scale experimental studies, such as the use of bubble column reactors to enhance gas–liquid contact, in order to achieve optimal process conditions and maximize glycerol carbonate yield.
Fotodegradasi Diazinon Menggunakan Material Fotokatalis CaO Dari Cangkang Telur Dengan Bantuan Paparan Sinar Matahari shofie, Auliya; Hilman Imadul Umam; Teguh Pambudi; Andini Nur Aisyah; Keisha Ekya Larrisa
Jurnal Inovasi Teknik Kimia Vol. 11 No. 1 (2026): JANUARI | INTEKA - Jurnal Inovasi Teknik Kimia
Publisher : Fakultas Teknik Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/inteka.v11i1.15204

Abstract

The increasing use of pesticides in agriculture contributes to water pollution, particularly from diazinon, a toxic and persistent compound. Photodegradation using waste-based catalysts offers a promising remediation approach. This study aims to synthesize calcium oxide (CaO) from eggshell waste and evaluate its photocatalytic performance for diazinon degradation under sunlight. An experimental method was employed, varying catalyst dosage, pH, initial diazinon concentration, and irradiation time, with degradation efficiency as the response variable. CaO was synthesized via calcination at 800°C, followed by KOH activation. Characterization revealed a porous surface structure with irregular particle distribution and the presence of Ca–O and O–H functional groups. UV–Vis analysis indicated a band gap of 2.75 eV, suggesting activity under solar irradiation. Optimal conditions were achieved at 16 mg catalyst dosage, pH 7, 50 ppm diazinon, and 90 minutes irradiation, yielding 26.41% degradation efficiency. Kinetic analysis followed a pseudo-second-order model (k = 0.0181; R² = 0.9977). These results demonstrate that eggshell-derived CaO is a low-cost, eco-friendly photocatalyst for pesticide wastewater treatment.

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