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  • Article
  • Open Access

Tuberculosis (TB), caused by Mycobacterium tuberculosis (Mtb), remains a global health burden, particularly due to multidrug-resistant (MDR) and extensively drug-resistant (XDR) strains. Rifampicin, a frontline anti-TB drug that inhibits RNA polymera...

  • Article
  • Open Access

Crack the Shell by Unlocking the Polyphenol Power of Hazelnut Waste with Ultrasound

  • Jana Šic Žlabur,
  • Margareta Đumbir,
  • Anamarija Peter,
  • Jona Šurić,
  • Sandra Voća,
  • Martina Skendrović Babojelić,
  • Filip Varga and
  • Mia Dujmović

Hazelnut (Corylus avellana L.) shells, typically discarded as agro-industrial by-products, represent a potentially valuable source of bioactive polyphenolic compounds with significant antioxidant properties. This study aimed to evaluate and compare t...

  • Article
  • Open Access

Performance Evaluation of Nano Ag/Co Modified Hydroxyapatite Catalyst Synthesized via Dielectric Barrier Discharge for Highly Efficient Toluene Oxidation

  • Shu-Yao Zhang,
  • Xue-Min Wang,
  • En-Peng Deng,
  • Ya-Ni Zhang,
  • Hui Zhu,
  • Qiang Chen,
  • Si-Wen Pan and
  • Yu-Xin Miao

In this study, a series of Ag/Co-HA catalysts were synthesized using a plasma-assisted method. Plasma is a partially ionized gas composed of electrons, ions, neutral molecules, free radicals, photons, and excited-state substances, which can serve as...

  • Review
  • Open Access
184 Views
24 Pages

Catalytic Oxidation of Alkanes and Cycloalkanes: Overview

  • Aygun Zabit Aliyeva,
  • Ulviyya Aliman Karimova,
  • Sahib Gadji Yunusov,
  • Michael Vigdorowitsch and
  • Sevinj Abdulhamid Mammadkhanova

Selective functionalisation of inert C(sp3)–H bonds in alkanes and cycloalkanes remains one of the main challenges in the field of environmentally sustainable chemistry. This review provides a critical assessment of current catalytic strategies...

  • Article
  • Open Access
141 Views
19 Pages

Kinetics of Decomposition in Alkaline Media NaOH and Ca(OH)2 of Thallium Jarosite

  • Hernán Islas,
  • J. Eliecer Méndez,
  • Francisco Patiño,
  • Sayra Ordoñez,
  • Iván A. Reyes,
  • Paola B. Bocardo,
  • Martín Reyes,
  • Miriam Estrada and
  • Mizraim U. Flores

Thallium is one of the most toxic elements on the planet, and one alternative method for its precipitation is through jarosite-type compounds. Therefore, in this work, the kinetics of thallium jarosite were evaluated in an alkaline medium (NaOH and C...

  • Article
  • Open Access
113 Views
24 Pages

Calculation, Measurement and Validation for Estimating the Biomass of the Biofilm on Microcarriers

  • Tamás Kloknicer,
  • Gergő Bálint Sárfi,
  • Dániel Benjámin Sándor and
  • Anita Szabó

Traditional carriers play a major role in wastewater treatment worldwide due to their reliability, ease of production, well-established analytical methods, and strong treatment performance. Recent studies indicate that polyvinyl-alcohol-based microca...

  • Article
  • Open Access
120 Views
19 Pages

Kinetics of Propene Oxidation to Acrolein over Bismuth Molybdates

  • Tomislav Penović,
  • Vesna Tomašić,
  • Aleksandra Sander,
  • Stanislav Kurajica and
  • Zoran Gomzi

The conversion of alkanes/alkenes into useful intermediates is highly important in the chemical industry. In this study, the physicochemical properties and catalytically active forms of bismuth molybdates (BiMo) were investigated using the selective...

  • Article
  • Open Access
219 Views
24 Pages

Yttrium Sulfate Recovery Using Ethanol as Antisolvent in a Fluidized Bed Reactor

  • Jacolien Sussens,
  • Jemitias Chivavava and
  • Alison E. Lewis

Antisolvent crystallization is a promising method for recovering rare earth elements (REEs). While it offers high theoretical yields of Y2(SO4)3·nH2O from aqueous leach solutions, the recovery is constrained by kinetic limitations. This study...

  • Article
  • Open Access
174 Views
19 Pages

Maintaining stable pressure in the oxidation–compressor section of purified terephthalic acid (PTA) plants is essential for ensuring efficient and reliable operation. Conventional single-loop proportional integral derivative (PID) controllers f...

  • Article
  • Open Access
292 Views
15 Pages

Advanced Oxidation of PET-Derived Monomers Using Excimer Radiation and Hydrogen Peroxide: Kinetic and Operational Insights

  • María Gómez,
  • María Claudia Montiel,
  • Elisa Gómez,
  • Asunción María Hidalgo,
  • Fuensanta Máximo and
  • María Dolores Murcia

Growing environmental concern over plastic pollution has increased the need to address the persistence of PET-derived monomers, such as bis(2-hydroxyethyl) terephthalate (BHET) and terephthalic acid (TPA). This work examines the use of excimer radiat...

  • Article
  • Open Access
139 Views
13 Pages

Brief treatment of a bottled young dry red wine with low-intensity natural emissions in the mid-infrared and far-infrared/near-microwave regions of the electromagnetic spectrum resulted in moderate changes in the concentrations of certain odorants in...

  • Article
  • Open Access
378 Views
23 Pages

Mixing processes in stirred tanks are widely applied across various industries, but still offer significant potential for optimization. A promising strategy is the use of double-stage impeller setups instead of conventional single impellers. While mu...

  • Article
  • Open Access
230 Views
16 Pages

Soapstock (SS), a by-product of vegetable oil refining, is a promising source of a mixture of mono-, di-, triglycerides, and free fatty acids (MDTG-FFA), a valuable feedstock for biodiesel production. In this study, the selective extraction of MDTG-F...

  • Article
  • Open Access
316 Views
25 Pages

Green Synthesis of ZnO Nanoparticles: Effect of Synthesis Conditions on Their Size and Photocatalytic Activity

  • Veronika Yu. Kolotygina,
  • Arkadiy Yu. Zhilyakov,
  • Maria A. Bukharinova,
  • Ekaterina I. Khamzina and
  • Natalia Yu. Stozhko

Green technologies are actively being used to produce nanosized zinc oxide, which is in demand for water purification processes to remove pollutants. Despite the success of the green synthesis of ZnO nanoparticles, no scientific approach exists for s...

  • Article
  • Open Access
323 Views
15 Pages

One-Step CO2-Assisted Pyrolysis of Spent Coffee Grounds: A Simpler Route to Highly Porous Biochar Compared with Two-Step Pyrolysis–CO2 Activation

  • Ancuţa Balla,
  • Cristina Marcu,
  • Maria Mihet,
  • Irina Kacsó,
  • Septimiu Tripon,
  • Alexandru Turza and
  • József-Zsolt Szücs-Balázs

Spent coffee grounds (SCG) are an abundant, carbon-rich residue that can be valorized through thermochemical conversion into biochar. Conventional CO2 activation is typically performed in a two-step process, which is time- and energy-consuming. This...

  • Article
  • Open Access
251 Views
15 Pages

Modern processes to produce rare-earth elements, strategic metals, and nuclear fuel reprocessing require highly efficient liquid–liquid extraction in systems characterized by high viscosity, elevated interfacial tension, and small density diffe...

  • Article
  • Open Access
297 Views
17 Pages

Drying Methods Applied to Ionic Gelation of Mangaba (Hancornia speciosa) Pulp Microcapsules

  • Jordan Heiki Santos Uemura,
  • João Renato de Jesus Junqueira,
  • Ângela Christina Conte Theodoro,
  • Jefferson Luiz Gomes Corrêa,
  • Thaisa Carvalho Volpe Balbinoti and
  • Juliana Rodrigues do Carmo

Brazil is one of the richest countries in biodiversity, with biomes that host countless native species of ecological and economic relevance. Among its native fruits, mangaba (Hancornia speciosa) stands out for its nutritional relevance. However, its...

  • Article
  • Open Access
259 Views
17 Pages

Sustainable Adsorption of Rhodamine B and Heavy Metals Using Sewage Sludge-Derived Biochar

  • Yerkanat N. Kanafin,
  • Assylzhan Mukhametrakhimova,
  • Rauza Turpanova and
  • Stavros G. Poulopoulos

The sustainable management of sewage sludge remains a key environmental challenge for rapidly urbanizing regions such as Kazakhstan. This study explores the potential of sewage sludge-derived biochar as an efficient, low-cost adsorbent for removing R...

  • Article
  • Open Access
257 Views
16 Pages

Carbon Filters Modified with Synthesized TiO2, Fe3O4 and CaO via Mechanical Milling for Methylene Blue Adsorption

  • Fatima Pamela Lara-Castillo,
  • Jorge Carlos Ríos-Hurtado,
  • Sergio Enrique Flores-Villaseñor,
  • Alejandro Pérez-Alvarado,
  • Rumualdo Servin-Castañeda,
  • Gloria I. Dávila-Pulido and
  • Adrián A. González-Ibarra

Although carbon filters (CF) can exhibit limited adsorption/selectivity for certain emerging pollutants and operating conditions, incorporating carbon–metal-oxide composites provides a platform to study how surface chemistry, charge distributio...

  • Article
  • Open Access
267 Views
21 Pages

Assessment of the Yield and Bioactive Compounds of Jambu (Acmella oleracea) Flowers and Leaves Extracted with CO2, 1,1,1,2-Tetrafluoroethane (R-134a), and Propane

  • Marcos Antônio Avibar Ruzza,
  • Raquel Laina Barbosa dos Santos,
  • Nikolas Ramos Bernardes,
  • Carlos Toshiyuki Hiranobe,
  • Dener da Silva Souza,
  • Michael Jones da Silva,
  • Erivaldo Antônio da Silva,
  • Renivaldo José dos Santos and
  • Leandro Ferreira-Pinto

This study compares the extraction of oils and bioactive compounds from Acmella oleracea using supercritical CO2, pressurized R-134a, and propane under systematically designed experimental conditions. Extraction yields ranged from 1.16–3.35% fo...

  • Article
  • Open Access
287 Views
12 Pages

Photocatalytic Enhancement of Metal Ion Release from Oxides in the Presence of Polystyrene: Environmental Implications in Marine Pollution

  • Francesca Coccia,
  • Lucia Tonucci,
  • Andrea Mascitti,
  • Rosa Sinisi,
  • Carmela Leonessa,
  • Michele Ciulla,
  • Antonella Fontana,
  • Stefano Di Giacomo and
  • Nicola d’Alessandro

The coexistence of plastics and metal-based materials in aquatic systems introduces complex interfacial processes that influence pollutant speciation and mobility. This study investigates the role of polystyrene (PS) in promoting UV-induced dissoluti...

  • Article
  • Open Access
468 Views
20 Pages

Integrated Preflash Drum Optimisation for Energy Efficiency and Profitability in Crude Distillation Units

  • Sharif H. Zein,
  • Chukwuchetam A. Akakuru,
  • Khalaf J. Jabbar,
  • Usama Ahmed and
  • A. A. Jalil

Crude distillation units operate as the most energy-intensive refinery operations and generate substantial carbon dioxide emissions. This research models the crude distillation system through its three main components: the atmospheric distillation un...

  • Article
  • Open Access
331 Views
21 Pages

Novel Phosphorylethanolamine-Modified ZIF-67 for Crystal Violet Dye Removal

  • Mohamad A. S. Ebrahim,
  • Sagheer A. Onaizi and
  • Muhammad S. Vohra

The elimination of toxic and long-lasting dyes like crystal violet (CV) from wastewater continues to be a major environmental challenge. Considering this, in this study, a novel amine-modified adsorbent was synthesized by functionalizing ZIF-67 with...

  • Article
  • Open Access
539 Views
21 Pages

Crude Blend Optimization for Enhanced Gasoline Yield: A Nigerian Refinery Case Study

  • Sharif H. Zein,
  • Azeez Ajayi,
  • Khalaf J. Jabbar,
  • Muhammad Faiq Abdullah,
  • Usama Ahmed and
  • A. A. Jalil

Refinery blending is a routine operation, yet small changes in crude mix can strongly affect product yield and fuel quality. In this work, Aspen HYSYS v12.1 was used to model and optimize the blending of four Nigerian crude oils—Antan, Usan, Bo...

  • Review
  • Open Access
548 Views
19 Pages

Photocatalytic degradation of organic molecules using TiO2 has attracted attention in wastewater treatment because it can decompose organic compounds that are difficult to decompose by other methods. Meanwhile, efficient photocatalytic water treatmen...

  • Article
  • Open Access
790 Views
20 Pages

Bioactive and Phenolic Profiles in Pinus pinaster Bark: A Comparative Study of Microwave and Ultrasound Extraction Methods

  • Diana Barros,
  • José Ignacio Alonso-Esteban,
  • Tiane C. Finimundy,
  • Carla Pereira,
  • Josiana A. Vaz,
  • Ricardo Pereira-Pinto,
  • Élia Fernandes,
  • Preciosa Pires,
  • Joana Santos and
  • Manuela Vaz-Velho
  • + 1 author

This study conducted a comprehensive comparison of two green extraction methods, microwave-assisted extraction (MAE) and ultrasound-assisted extraction (UAE), for recovering bioactive phenolic compounds from Pinus pinaster bark. The goal was to valor...

  • Article
  • Open Access
418 Views
22 Pages

Integration of Machine Learning and Feature Analysis for the Optimization of Enhanced Oil Recovery and Carbon Sequestration in Oil Reservoirs

  • Bukola Mepaiyeda,
  • Michal Ezeh,
  • Olaosebikan Olafadehan,
  • Awwal Oladipupo,
  • Opeyemi Adebayo and
  • Etinosa Osaro

The dual imperative of mitigating carbon emissions and maximizing hydrocarbon recovery has amplified global interest in carbon capture, utilization, and storage (CCUS) technologies. These integrated processes hold significant promise for achieving ne...

  • Article
  • Open Access
395 Views
16 Pages

Harnessing an Invasive Species’ Waste for Syngas Production: Fast Pyrolysis of Rosehip Seeds in a Bubbling Fluidized Bed

  • Rodrigo Torres-Sciancalepore,
  • Daniela Zalazar-García,
  • Rosa Rodriguez,
  • Gastón Fouga and
  • Germán Mazza

This study examines the fast pyrolysis of rosehip seed waste (RSW) in a fluidized bed reactor, evaluating its potential for syngas production and effective waste valorization. The fluidization behavior of sand/RSW mixtures was characterized by determ...

  • Article
  • Open Access
502 Views
24 Pages

The energy–water–carbon (EWC) nexus has become a critical concern for industrial systems seeking sustainable development, yet existing assessment approaches often require intensive computation and lack practical adaptability. This study p...

  • Article
  • Open Access
1 Citations
607 Views
28 Pages

Numerical Investigation into Effects of Gas Sparger and Horizontal Baffles on Hydrodynamics of Flat Bubble Column

  • Masroor Abro,
  • Imran Nazir Unar,
  • Junaid Korai,
  • Abdul Qudoos,
  • Sikandar Almani,
  • Abdul Qadeer Laghari,
  • Liang Yu and
  • Abdul Sattar Jatoi

Computational fluid dynamics (CFD) was used to investigate influence of different gas sparger configurations and the presence of horizontal baffles on hydrodynamic characteristics in a flat bubble column. CFD results of time-averaged local and global...

  • Review
  • Open Access
911 Views
20 Pages

Sustainable Solutions in Sodium-Ion Battery Cathode Materials: A Mini-Review of Strategies for Upgraded Performance Through Modification Techniques

  • Mudhar A. Al-Obaidi,
  • Farhan Lafta Rashid,
  • Ahmed K. Ali,
  • Mohammed Mahdi,
  • Ahmad Al Astal and
  • Iqbal M. Mujtaba

Sodium-ion batteries (SIBs) have arisen as a potential alternative to lithium-ion batteries (LIBs) as a result of the abundant availability of sodium resources at low production costs, making them in line with the United Nations Sustainable Developme...

  • Article
  • Open Access
511 Views
28 Pages

Corrosion of carbon steel in acidic media remains a critical challenge during acidizing operations. This study evaluates carrot and rosemary extracts—individually and in combination—as green corrosion inhibitors for carbon steel in 1 M HC...

  • Article
  • Open Access
404 Views
16 Pages

This study investigates the formulation and optimization of acid-stable water-in-oil-in-water (W/O/W) double emulsions stabilized by sodium caseinate (NaCN)–xanthan gum (XG) complexes, with the aim of developing a natural biopolymer-based deliv...

  • Article
  • Open Access
645 Views
24 Pages

Monte Carlo Simulations as an Alternative for Solving Engineering Problems in Environmental Sciences: Three Case Studies

  • Sergio Luis Parra-Angarita,
  • Guillermo H. Gaviria,
  • Juan F. Herrera-Ruiz and
  • María del Carmen Márquez

Monte Carlo methods offer a fast, cost-effective approach for modeling environmental systems influenced by random variability. This study applied them to three abiotic cases: (I) water quality in a lentic surface water source, (II) sizing of a homoge...

  • Article
  • Open Access
535 Views
21 Pages

Activated Carbons for Bone Cell Growth: Structural Properties and Biological Interactions

  • Damião de Carvalho Pereira,
  • Drielli Viana Souza,
  • Ayres Fernando Rodrigues,
  • Gisele Amaral-Labat,
  • Patrícia Almeida-Mattos,
  • Guilherme Frederico Bernardo Lenz e Silva,
  • Flavia Lega Braghiroli,
  • Ana Paula Ligeiro de Oliveira,
  • José Antônio Silva Júnior and
  • Rodrigo Labat Marcos
  • + 3 authors

Having high porosity and biocompatibility, carbon-based materials are promising candidates for tissue engineering applications, particularly as substitutes for biological tissues. This study investigates the growth and viability of osteoblasts on fou...

  • Article
  • Open Access
1 Citations
632 Views
9 Pages

This study aims to estimate the organic load of oily wastewater by using Chemical Oxygen Demand (COD) measurements, addressing the analytical challenges posed by the hydrophobic, nonpolar, and often emulsified nature of Fats, oil and grease (FOG). Th...

  • Article
  • Open Access
653 Views
26 Pages

Physicochemical Study of Water Contamination for Health Risks and Environmental Implications: A Case Study of Barite Mining Sites

  • David Oluwasegun Afolayan,
  • Hassan Abubakar Adamu,
  • Seun Isaiah Olajuyi and
  • Olumide Samuel Oluwaseun Ogunmodimu

Mining is associated with specific heavy metals (HMs), including cadmium (Cd), lead (Pb), copper (Cu), iron (Fe), and other toxic metals. These metals contaminate water and accumulate in both children and adults at varying concentrations, resulting i...

  • Article
  • Open Access
304 Views
18 Pages

Preparation and Mechanism of pH-Responsive Cellulose Fabric via HRP-Catalyzed Grafting of Ferulic Acid

  • Jinfang Zhang,
  • Shujun Chen,
  • Cheng Lv,
  • Shanshan Liu,
  • Xinggang Shan,
  • Hailong Chen,
  • Chen Liu,
  • Yujing Bian and
  • Jiangfei Lou

To develop a novel pH-responsive multifunctional wound dressing, this study designed a ferulic acid (FA)–cellulose-grafted polymer that leverages the pH-responsive properties of FA. This polymer enables the rapid detection of pH fluctuations in...

  • Article
  • Open Access
663 Views
19 Pages

Agri-Food Residues into N-Doped Hydrochar for Peroxymonosulfate Activation in Wastewater Treatment

  • Silvia Escudero-Curiel,
  • Xacobe M. López-Rodríguez,
  • Aida M. Díez,
  • Marta Pazos and
  • Ángeles Sanromán

This study investigates the valorization of two agri-food residues, specifically olive pomace (alperujo, A) and banana peel (B), into efficient N-doped carbon-based catalysts for polluted wastewater treatment. The residues were converted into hydroch...

  • Article
  • Open Access
505 Views
17 Pages

Optimizing the Bleaching Conditions for Mechanically Extracted and Solvent-Extracted Hempseed Oil

  • Preston C. Wilson,
  • Md. Sanaul Huda,
  • Roque Evangelista,
  • Clairmont L. Clementson,
  • Sean Liu,
  • Bingcan Chen and
  • Ewumbua Monono

Hemp (Cannabis sativa) seed oil is recognized as a valuable oil due to its beneficial fatty acid profile, which includes a favorable balance of omega-6 and omega-3 fatty acids, making it highly desirable for edible and bioproduct applications. Crude...

  • Article
  • Open Access
504 Views
15 Pages

Formation of Films on a Metal Surface by Inhibitors with Assessment of Their Protective Properties

  • Balzhan Kabylbekova,
  • Nadezhda Vysotskaya,
  • Abibulla Anarbaev,
  • Roza Spabekova,
  • Karim Kurbanbekov,
  • Gulnur Kaldybekova and
  • Zhakhongir Khussanov

An effective approach to maintaining uninterrupted coolant flow in heat supply systems—and thereby reducing energy consumption—is to prevent the formation of corrosion-scale deposits on the inner surfaces of metal pipes. This is typically...

  • Article
  • Open Access
581 Views
19 Pages

Dissolution Behavior and Kinetics of Copper Sulfide Concentrate in Choline Chloride DES

  • Mojtaba Ghadamgahi,
  • Abolfazl Babakhani,
  • Hossein Shalchian,
  • Ghasem Barati Darband and
  • Hamid Reza Shiri

This study presents a comprehensive investigation of copper extraction from chalcopyrite concentrate using choline chloride–malonic acid (ChCl:Ma) deep eutectic solvent (DES) through an integrated experimental and modeling approach. The work be...

  • Article
  • Open Access
741 Views
17 Pages

Experimental Investigation of the Two-Phase Loop Thermosyphon Working with Low-GWP Mixtures for Heat Reclaim

  • Michał Sobieraj,
  • Dariusz Ksionek,
  • Michał Kamiński and
  • Filip Karczmarczyk

The application range of a two-phase loop thermosyphon (TPLT) includes electronics cooling and heating and ventilation (HVAC) systems. Combining data center heat removal with HVAC systems can be beneficial in terms of reducing energy use and greenhou...

  • Article
  • Open Access
585 Views
18 Pages

In this study, we investigated the impact of incorporating energetic substituents such as –NO2, –NH2, –Cl, –F, N-methyl-N-nitro (CH3–N–NO2), and picryl on the detonation performance and stability of acridone-based...

  • Article
  • Open Access
547 Views
40 Pages

A numerical model was developed to simulate a fluidized bed reactor for isobutane dehydrogenation. First, we constructed a hydrodynamic model of catalyst particle fluidization and a kinetic model for three chemical reactions in a simple lab-scale rea...

  • Review
  • Open Access
1 Citations
2,068 Views
42 Pages

A Review on the Mixing Quality of Static Mixers

  • Lukas von Damnitz and
  • Denis Anders

Static mixers are widely used devices for efficient fluid mixing, homogenization, and enhancement of heat transfer, with applications ranging from chemical processing and pharmaceutical manufacturing to wastewater treatment. This review provides a st...

  • Article
  • Open Access
1,779 Views
28 Pages

Optimized Synthesis Strategy of Mxene-Loaded Graphitic Carbon Nitride (g-C3N4) for Enhanced Photocatalytic Degradation of Rhodamine B

  • Bayazid Bustami,
  • Parvej Rahman Alif,
  • Md Mahfuzur Rahman,
  • Mohaiminul Islam and
  • Alam S. M. Nur

Developing efficient photocatalysts is essential for sustainable wastewater treatment and tackling global water pollution. Graphitic carbon nitride (g-C3N4) is a promising material because it is active under visible light and chemically stable. Howev...

  • Article
  • Open Access
899 Views
20 Pages

Rotating packed beds (RPBs) have recently attracted significant attention as a promising approach to intensify the performance of traditional packed columns. Although many lab-scale experimental and numerical studies on RPBs are available in the lite...

  • Article
  • Open Access
374 Views
21 Pages

Modeling of Hydrodynamics of Agglomeration of Low-Grade Phosphorites in the Presence of Phosphate-Siliceous Shales and Oil Sludge

  • Saltanat Tleuova,
  • Zhunisbek Turishbekov,
  • Ayaulym Tileuberdi,
  • Dana Pazylova,
  • Iskandarbek Iristaev,
  • Mariyam Ulbekova and
  • Nurila Sagindikova

The purpose of this study is to develop a multiphysical model of agglomeration of low-grade phosphorites with the addition of phosphate-siliceous shales and oil sludge. To achieve these tasks, a numerical approach was used in the COMSOL Multiphysics...

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ChemEngineering - ISSN 2305-7084