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Optimised model microcapsules of Arabic gum and gelatin a for functional cosmet...

Kessler, Júlia C.; Martins, Isabel M.; Manrique, Yaidelin A.; Lopes, José Carlos B.; Rodrigues, Alírio; Barreiro, M.F.; Dias, Madalena M.

Microcapsules were developed using Arabic gum and gelatin A through complex coacervation, employing both batch and continuous production methods. Ingredients were chosen to encapsulate diverse hydrophobic core materials with functional properties tailored for cosmetic applications, such as those found in commercial hydrating creams, aiming to enhance their performance through microencapsulation. The formulation...

Date: 2025   |   Origin: Biblioteca Digital do IPB

Influence of environmental factors on α-tocopherol levels in Moringa oleifera e...

Kessler, Júlia C.; Manrique, Yaidelin A.; Martins, Isabel M.; Ribeiro, António E.; Rodrigues, Alírio; Barreiro, Filomena; Dias, Madalena M.

Moringa oleifera L. extracts (Mo) have attracted attention as a sustainable and effective alternative to synthetic ingredients for cosmetic formulations. The unique and diverse phytochemical profile of the Mo tree enhances the quality and appeal of commercial products, as evidenced by numerous studies and patents. Supercritical carbon dioxide extraction (SFE-CO2) is particularly advantageous for this purpose, o...

Date: 2025   |   Origin: Biblioteca Digital do IPB

Vacuum pressure swing adsorption process using binder-free K(23)Y zeolite for p...

Aly, Ezzeldin; Zafanelli, Lucas F.A.S.; Henrique, Adriano; Gleichmann, Kristin; Rodrigues, Alírio; Freitas, Francisco A. da Silva; Silva, José A.C.

This study presents the development of a Vacuum Pressure Swing Adsorption (VPSA) process utilizing binder- free K(23)Y zeolite for post-combustion CO2 capture. The ion-exchanged K(23)Y zeolite, characterized by a high CO2 selectivity of 97 over N2 at 10 kPa and an adsorption capacity exceeding 7 mol⋅kg− 1 350 kPa at 306 K, was evaluated under various operational conditions to optimize the VPSA process. Experime...

Date: 2025   |   Origin: Biblioteca Digital do IPB

Lignin from aldehyde-assisted fractionation can provide light-colored Pickering...

Colucci, Giovana; Ribeiro, Andreia; Figueirêdo, Monique Bernardes; Charmillot, Justine; Santamaria-Echart, Arantzazu; Rodrigues, Alírio

Colloidal lignin particles (CLPs) are gaining attention as eco-friendly stabilizers for Pickering emulsions. Still, conventional lignin sources, like kraft lignin, are often limited by their dark color and strong odor. This study explores, for the first time, the use of a light-colored lignin derived from an aldehyde-assisted fractionation with glyoxylic acid (GA-lignin) for producing CLPs and derived Pickering...

Date: 2025   |   Origin: Biblioteca Digital do IPB

Dual-stage vacuum pressure swing adsorption for green hydrogen recovery from na...

Zafanelli, Lucas F.A.S.; Aly, Ezzeldin; Henrique, Adriano; Rodrigues, Alírio; Silva, José A.C.

Purification of green hydrogen (GH) from natural gas grids (NGG) can be expensive and challenging through a single-step Pressure Swing Adsorption (PSA) process due to the low H2 concentration in the grid (<20 % v/v). Herein, we report for the first time the design of a dual-stage vacuum pressure swing adsorption process (DS-VPSA) to purify H2 blended in NGG with a synergy action of two types of adsorbents: a Ca...

Date: 2025   |   Origin: Biblioteca Digital do IPB

Post-combustion CO2 capture using Ion-exchanged binder-free NaY beads

Aly, Ezzeldin; Zafanelli, Lucas F.A.S.; Henrique, Adriano; Freitas, Francisco A. da Silva; Rodrigues, Alírio; Silva, José A.C.

on-exchange processes on zeolites hold promise for improving adsorption mechanisms critical for post-combustion CO2 capture (PCC). Zeolites offer advantages such as favourable CO2 adsorption isotherms, rapid kinetics, non-toxicity, and cost-effectiveness, making them attractive candidates for carbon capture applications. In this study, we focus on exploring the impact of ion-exchange (K+ and Ca2+) on bare NaY z...

Date: 2024   |   Origin: Biblioteca Digital do IPB

Separation of Branched Alkanes Feeds by a Synergistic Action of Zeolite 5A and ...

Henrique, Adriano; Brântuas, Pedro; Zafanelli, Lucas F.A.S.; Aly, Ezzeldin; Rodrigues, Alírio; Maurin, Guillaume; Serre, Christian; Silva, José A.C.

The total isomerisation process (TIP) developed by the universal oil products (UOP) for upgrading the octane rating of light hydrocarbon fractions, especially mixed feedstocks containing pentane (C5) and hexane (C6) isomers, is among the first and most successful adsorption processes applied in the industry. Typically, the light naphtha, characterised by a low research octane number (RON, ≈70), undergoes an inc...

Date: 2024   |   Origin: Biblioteca Digital do IPB

Disclosing the potential of Cupressus leylandii A.B. Jacks & Dallim, Eucalyptus...

Almeida, Heloísa H.S.; Crugeira, Pedro Jorge Louro; Amaral, Joana S.; Rodrigues, Alírio; Barreiro, M.F.

Antimicrobial resistance is a major global health concern, threatening the effective prevention and treatment of infections caused by microorganisms. These factors boosted the study of safe and green alternatives, with hydrosols, the by-products of essential oils extraction, emerging as promising natural antimicrobial agents. In this context, four hydrosols obtained from Cupressus leylandii A.B. Jacks & Dallim,...

Date: 2024   |   Origin: Biblioteca Digital do IPB

Dual-Stage Vacuum Pressure Swing Adsorption for Green Hydrogen Recovery from Na...

Zafanelli, Lucas F.A.S.; Aly, Ezzeldin; Henrique, Adriano; Rodrigues, Alírio; Silva, José A.C.

A shift to renewable energy sources is crucial to mitigating climate change. Fossil fuels, such as petroleum, natural gas, and coal, mainly contribute to the economy’s growth. However, their use is also the main contributor to global warming. According to the IPCC report, in 2019, the combined energy supply, industry, and transport sectors represented 73% of the total net anthropogenic emissions, which means ap...

Date: 2024   |   Origin: Biblioteca Digital do IPB

Separation of Branched Alkane Feeds with Metal-Organic Frameworks

Henrique, Adriano; Brântuas, Pedro; Zafanelli, Lucas F.A.S.; Aly, Ezzeldin; Rodrigues, Alírio; Maurin, Guillaume; Serre, Christian; Silva, José A.C.

The production of high-quality gasoline is currently achieved through the Total Isomerization Process that separates n/iso-paraffins in the pentane (C5) and hexane (C6) range while not reaching the ultimate goal of a research octane number (RON) higher than 92. This work demonstrates two promising alternatives/strategies using metal-organic frameworks (MOF) that lead to a novel adsorptive separation process to ...

Date: 2024   |   Origin: Biblioteca Digital do IPB

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