All articles
28 articles
-
Dynamic Matrix Control Versus Nonlinear ModelPredictive Control for the Van de Vusse ContinuousStirred-Tank Reactor: Diagnosing and Correcting aCost-Function Pathology That Masked NMPC’sTrue Performance
Abstract: The Van de Vusse reaction in a continuous stirred-tank reactor (CSTR) is a benchmark for nonlinear multivariable control, but its narrow operating envelope creates a trap for nonlinear model predictive control (NMPC): when the setpoint step is small relative to the plant’s reachable range, a standard quadratic NMPC cost function can make zero control action mathematically optimal, even with a perfect prediction model. This paper documents that failure mode, traces …
Published in International Journal of Chemical Separation Technology · Vol. 12, Issue 2, 2026 · pp. 55–66 Read article
-
Density-Based Separation and Polymer Type Verification of Mixed Post-ConsumerThermoplastic Streams: A Sequential Separation and Contamination Reduction Protocol for Secondary Polymer Supply Chains
Abstract: The separation of mixed post-consumer thermoplastic waste streams into polymer-type-specific fractions suitable for industrial reintegration is a fundamental chemical separation challenge in secondary polymer supply chains. Density-based separation, exploiting the characteristic density ranges of common thermoplastic polymers, remains the dominant first-stage separation technique in commercial recycling operations due to its low cost, scalability, and applicability across mixed waste stream compositions. This paper presents a sequential separation and contamination reduction protocol …
Published in International Journal of Chemical Separation Technology · Vol. 12, Issue 2, 2026 Read article
-
Next-Generation Radioactive Waste Treatment and Long-Term Containment Strategies
Abstract: *Author for Correspondence Sri Charitha Annam E-mail: [email protected] The safe management and disposal of radioactive waste is one of the most critical unsolved challenges in the continued development and use of nuclear energy. Radioactivity is the emission of energy from a radioactive material. Most of the time, this energy is used for power, medical, and industrial purposes. Unfortunately, all this use of energy gives rise to its waste. The impact …
Published in International Journal of Chemical Separation Technology · Vol. 12, Issue 1, 2026 · pp. 23–29 Read article
-
Low-Cost FDM-Printed Microfluidic Droplet Generators with Vertical Flow-Focusing Channels
Abstract: *Author for CorrespondenceL. K. NarangammanaE-mail: [email protected] Low-cost fabrication methods are now essential for expanding access to microfluidic technologies in biological and laboratory applications. In this work, we present a fused deposition modeling (FDM) based approach for the rapid fabrication of monolithic microfluidic droplet generators incorporating several T-junction and specific flow-focusing geometries, including a novel vertical channel configuration. All devices were fabricated without post-processing or bonding, demonstrating a simple and cost-effective …
Published in International Journal of Chemical Separation Technology · Vol. 12, Issue 1, 2026 · pp. 30–46 Read article
-
Crude Oil Degradation on the Influence of Palm oil-Fermented Wastewater Used as Biostimulant
Abstract: *Author for CorrespondenceUkpaka Chukwuemeka Peter E-mail: [email protected] The total petroleum hydrocarbon (TPH) degradation was monitored in a batch reactor with the addition of biostimulants like palm oil processed wastewater (POPWW) acting as nutrients, to effectively enhance high efficiency in contaminants remediation in clay soil. The kinetic components were evaluated in terms of specific rates of petroleum hydrocarbon degradation, maximum specific rate of total petroleum hydrocarbon degradation as well as the …
Published in International Journal of Chemical Separation Technology · Vol. 12, Issue 1, 2026 · pp. 47–60 Read article
-
Global Trends in Environmental Chemistry Research: A Bibliometric Analysis of Leading Nations (1996–2023)
Abstract: Environmental contamination has become a significant issue worldwide, primarily driven by human activities. A multitude of scholarly articles are disseminated globally within the field of environmental chemistry, reflecting its vast potential to address this issue in a sustainable manner. This article conducts a bibliometric assessment of research outputs, concentrating on publications, citations, and citations per document from the leading 30 countries globally, spanning the years 1996 to 2023 to substantiate …
Published in International Journal of Chemical Separation Technology · Vol. 12, Issue 1, 2026 · pp. 1–15 Read article
-
Catalytic Pathways for the Conversion of Glycerol to Industrial Chemicals
Abstract: Abstract *Author for CorrespondenceIndra Neel PulidindiE-mail: [email protected] 1Student, Department of Ear, Nose and Throat, Saveetha Medical College (SMC) and Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, Tamil Nadu, India2Assistant Professor, Department of Ear, Nose and Throat, Saveetha Medical College (SMC) and Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, Tamil Nadu, India Received Date: February 07, 2026Accepted Date: February 16, 2026Published Date: March 21, 2026 Citation: Shivani …
Published in International Journal of Chemical Separation Technology · Vol. 12, Issue 1, 2026 · pp. 16–22 Read article
-
Artificial Intelligence for the Art and Science of Separation: Optimizing Chemical Systems
Abstract: Chemical separation processes play a critical role across chemical manufacturing, energy production, pharmaceuticals, and environmental remediation, yet they remain among the most energy-intensive operations in modern industry. Recent advancements in artificial intelligence (AI) offer transformative opportunities to significantly improve the efficiency, selectivity, and sustainability of these systems by leveraging computational power and data-driven insight. This article reviews the emerging integration of machine learning, data-driven modeling, and advanced optimization algorithms with …
Published in International Journal of Chemical Separation Technology · Vol. 11, Issue 2, 2025 · pp. 1–7 Read article
-
e-Kidney Filtration System (EKS) Using Sensor: A Study
Abstract: This research presents the design and preliminary validation of an E-Kidney Filtration System (EKS), an innovative artificial kidney leveraging advanced sensor technology for precise and adaptable blood filtration. Traditional hemodialysis, while life-sustaining, is a passive process with inherent limitations in its ability to dynamically respond to individual patient needs and fluctuations in physiological parameters. EKS aims to overcome these limitations by integrating a suite of real-time biosensors and electrochemical sensors …
Published in International Journal of Chemical Separation Technology · Vol. 11, Issue 2, 2025 · pp. 31–40 Read article
-
Reactive Separation for Biodiesel Purification Using Hybrid Membrane Systems
Abstract: Biodiesel produced through transesterification typically contains several impurities, including residual glycerol, unreacted methanol, soaps, water and homogeneous catalysts, all of which reduce fuel quality and hinder compliance with EN 14214 and ASTM D6751 standards. Conventional purification techniques such as water washing, centrifugation and vacuum distillation are energy-intensive, generate large volumes of wastewater and often fail to efficiently remove polar contaminants. To overcome these limitations, this study examines a reactive separation …
Published in International Journal of Chemical Separation Technology · Vol. 11, Issue 2, 2025 · pp. 17–30 Read article
-
Functional Rubber Particles and Their Applications- A Review
Abstract: Functional rubber powders (FRPs) are emerging as a potential class of materials derived primarily from end-of-life tires (ELTs) and other rubber scraps through mechanical, cryogenic, or de-vulcanization methods. These powders act as high-performance additives or reinforcing fillers in various engineering applications due to their low cost, improved surface properties, customizable particle sizes, and ability to undergo further chemical reactions. This review provides an overview of the production technologies, focusing on …
Published in International Journal of Chemical Separation Technology · Vol. 11, Issue 2, 2025 · pp. 8–16 Read article
-
Brown Onion Oil Characteristics of Medicinal Integrity byLooking at the Extraction Operating Conditions
Abstract: New forms of disease are increasingly affecting people living in today’s highly pressure environment, and these diseases are less responsive to conventional treatments. Aromatic plants and species are used for thousands of years for many purposes, such as medicine, perfumes and cosmetics, as well as in the food industry for culinary and medicinal uses. The brown onion shows the following physic and chemical properties as determined experimentally as Refractive index …
Published in International Journal of Chemical Separation Technology · Vol. 11, Issue 2, 2025 · pp. 41–51 Read article
-
Mathematical Computation, Ecological and Human Health Implications of Water Quality Index of Bodo Creek, Niger Delta, Nigeria
Abstract: Bodo Creek has huge importance to the people in the area and also constitute their source of fishing, boating, dredging, and transportation to Bonny Island among other neighbouring coastal communities in Rivers State. Water contamination is a significant issue, but it has also brought up important environmental and public health concerns. The weighted arithmetic water quality index approach was used in this work to determine the Water Quality Index (WQI) …
Published in International Journal of Chemical Separation Technology · Vol. 11, Issue 1, 2025 Read article
-
Design and Fabrication of A Vertical Axis Darrieus Wind Turbine for Household Electricity Generation
Abstract: The Vertical Axis Darrieus Wind Turbine (VAWT) market is growing at 15% annually, valued at $2.1 billion, with rising demand for 10-30 kW models for residential use. This Paper focuses on designing and fabricating a compact, efficient, and low-maintenance VAWT optimized for urban applications and low wind speeds. Addressing gaps in blade design, adaptability, and cost, the turbine features helical blades modeled in SolidWorks for optimal geometry and performance.Polylactic acid …
Published in International Journal of Chemical Separation Technology · Vol. 11, Issue 1, 2025 Read article
-
Green Solvent Extraction: Sustainable Approaches for Chemical Separation
Abstract: Solvent extraction techniques have advanced significantly as a result of the increased focus on sustainability and environmental responsibility. Traditional organic solvents, while effective in chemical separation processes, often contribute to environmental pollution and pose health risks. In response, researchers have explored greener alternatives that minimize these adverse effects. Compared to traditional procedures, green solvent extraction offers safer and more environmentally friendly solutions by using bio-based solvents, ionic liquids, and deep …
Published in International Journal of Chemical Separation Technology · Vol. 11, Issue 1, 2025 Read article
-
Liquid-Liquid Extraction Strategies for the Isolation of Bioactive Heterocyclic Compounds
Abstract: Liquid-liquid extraction (LLE) is a widely employed technique for the isolation of bioactive heterocyclic compounds from natural products, fermentation broths, and synthetic mixtures. The efficiency of LLE depends on several factors, including solvent selection, pH manipulation, salting-out effects, and temperature control. Conventional solvent systems, such as water-organic solvent pairs, are commonly used, while advanced strategies, including ionic liquids (ILs), deep eutectic solvents (DESs), ultrasound-assisted extraction (UAE), and microwave-assisted extraction (MAE), …
Published in International Journal of Chemical Separation Technology · Vol. 11, Issue 1, 2025 Read article
-
Supercritical Fluid Extraction: Mechanisms, Applications, and Recent Developments
Abstract: Supercritical Fluid Extraction (SFE) is an advanced and versatile separation technique that harnesses the unique properties of supercritical fluids (SCFs) to extract a wide variety of compounds from both solid and liquid matrices. Supercritical fluids, which are substances at a temperature and pressure above their critical points, possess both liquid-like density and gas-like viscosity, making them highly effective solvents for extraction processes. This review delves into the underlying mechanisms of …
Published in International Journal of Chemical Separation Technology · Vol. 11, Issue 1, 2025 Read article
-
Utilization and Mitigation of Ventilation Air Methane in Coal Mining: A Focus on Turkey
Abstract: Ventilation Air Methane (VAM), a byproduct of underground coal mining, is a significant source of methane emissions and a potential energy resource. VAM is typically released at low concentrations, ranging from 0.1% to 1.5%, making it challenging to capture and utilize effectively. This article explores methane enrichment technologies, focusing on the weak eddy and free diffusion methods to increase VAM concentrations. These techniques have shown promise in enhancing methane capture …
Published in International Journal of Chemical Separation Technology · Vol. 11, Issue 1, 2025 Read article
-
The Potential Effect of Mass Variation on the Efficiency of the Single Electron System of Group II Elements
Abstract: This study explores the efficiency, interactions, and dynamics of single-electron systems in the group II family of alkaline earth metals. The efficiency of these systems is assessed by analyzing their energy levels, with beryllium demonstrating the highest efficiency at 3.6 e-22 due to its low atomic mass and favorable energy transitions. The isotopic distribution patterns for these elements reveal how variations in neutron numbers influence their nuclear stability and electronic …
Published in International Journal of Chemical Separation Technology · Vol. 10, Issue 2, 2024 · pp. 1–17 Read article
-
A Novel Approach to the Investigation of Molecular Polarization Using MATLAB Application
Abstract: Molecular polarization involves the separation of electric charge in a molecule due to the result of aninduced external field leading to a dipole having a positive charge on one side and the negative charge atthe other end. This helps us to know the characteristics of molecules and how they react with others. It isalso helpful to know their physical and chemical properties. Molecular polarization also includes itsintermolecular forces, dielectric behavior …
Published in International Journal of Chemical Separation Technology · Vol. 10, Issue 2, 2024 · pp. 1–18 Read article