J.A. Labrincha

J.A. Labrincha
University of Aveiro | UA · Department of Materials and Ceramics Engineering

Professor at Materials and Ceramics Engineering Department, University of Aveiro and Researcher at CICECO

About

491
Publications
117,175
Reads
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13,321
Citations
Citations since 2016
168 Research Items
9180 Citations
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201620172018201920202021202205001,0001,500
201620172018201920202021202205001,0001,500
Introduction
João Labrincha have conducted research on innovative and sustainable solutions for the use or recycling of critical, scarce or hazardous materials. The innovative character of such studies resulted in 22 patent applications (at national and International levels), in addition to the publications. He is also co-editor of 7 books on eco/efficient use of building materials. He was responsible for the implementation ofpost-graduation studies on Wastes Recycling and Resources Conservation at the UA.
Additional affiliations
November 1986 - present
University of Aveiro
Position
  • Professor (Associate)
November 1986 - present
University of Aveiro
Position
  • Professor (Associate)

Publications

Publications (491)
Article
In the boilers of pulp mills the fuel blends used vary because they are essentially composed of residual forest biomass. Consequently, the physical-chemical properties of the produced ash streams can exhibit high temporal variability, making their proper management and recycling difficult. This study aims to characterize the ash from the incinerati...
Article
Full-text available
The chemical foaming technique is possibly the most common method of producing porous geopolymers. Despite this, to date, the role of the content and type of surfactant on the pore size distribution of porous geopolymers is not fully perceived, as constant surfactant dosages are usually employed. In addition, the comparison of literature studies is...
Article
Full-text available
Fly ash (FA) and exhausted bed sands (sands wastes) that are generated in biomass burners for energy production are two of the wastes generated in the pulp and paper industry. The worldwide production of FA biomass is estimated at 10 million tons/year and is expected to increase. In this context, the present work aims to develop one-part alkali-act...
Article
Full-text available
The demand for products derived from the pulp and paper industry has been increasing over the past years and is projected to further increase over the coming decades. Although being one of Portugal’s most relevant industrial activities, contributing to nearly 2.3% of the GDP, this sector is known to generate a variety of wastes including fly ashes,...
Article
In today's society, air and water pollution, as well as clean energy, have become major concerns. Photocatalysis could be one of the ways used to address this new set of problems. Photocatalysis is a type of advanced oxidation method that involves light to activate a semiconductor. The semiconductor materials most likely to generate these reactions...
Article
Photocatalytic production of H2 from the decomposition of water has attracted increased attention, as the environmental damages caused by the rapid evolution of industry are threatening the development of human society. This energy production is considered a green and eco-friendly resource. It has the potential to replace the carbon component of fu...
Conference Paper
Full-text available
Citation: Capela, M.N.; Vieira, I.; Tarelho, L.A.C.; Seabra, M.P.; Labrincha, J.A. Preliminary Assessment of Biomass Fly Ash as a Partial Aggregate Replacement in a Screed Mortar Formulation. Mater. Proc. 2022, 8, 25. https://doi. Biomass fly ash (BFA) is an inorganic solid waste produced in biomass-fired power plants. Due to the adopted coal phase...
Conference Paper
Full-text available
Citation: Capela, M.N.; Cesconeto, F.R.; Tarelho, L.A.C.; Seabra, M.P.; Labrincha, J.A. Green Processing of Porous Biomass Fly Ash Monoliths with Methylene Blue Adsorption Capacity. Mater. Proc. 2022, 8, 24. Water contamination by dyes is a major worldwide issue. Intensive research has therefore been carried out to develop new materials for wastewa...
Article
Full-text available
The use of methylene blue (MB) by several industries generates contaminated industrial wastewaters that must be purified before discharge into the environment. Its removal can be achieved by adsorption, and low-cost and easily available materials should be used as adsorbents. Biomass fly ash (BFA) generated from biomass combustion, for heat and pow...
Conference Paper
Full-text available
Citation: Vilarinho, I.S.; Dias, A.C.; Carneiro, J.; Pinto, C.; Labrincha, J.A.; Seabra, M.P. Valorization of Bauxite Residue in Ceramic Pastes. Mater. Bauxite residue or red mud (RM) is an industrial hazardous waste generated from alumina production using the Bayer Process. At present, it is one of the most abundant industrial wastes. Currently, 3...
Preprint
Full-text available
In today's society, air and water pollution, as well as clean energy, have become major concerns. Photocatalysis could be one of the ways used to address this new set of problems. Photocatalysis is a type of advanced oxidation method that involves light to activate a semiconductor. The semiconductor materials most likely to generate these reactions...
Preprint
Full-text available
Photocatalytic production of H2 from the decomposition of water has attracted increased attention, as the environmental damages caused by the rapid evolution of industry are threatening the development of human society. This energy production is considered a green and eco-friendly resource. It has the potential to replace the carbon component of fu...
Article
Full-text available
Alkali-activated materials are generally considered a more sustainable alternative to Portland cement binders. This derives not only from the use of solid wastes as precursors, but also from the low temperatures required for their synthesis. However, to increase the environmental advantages of these materials, alternative activators should be explo...
Article
Modern life-style is creating an indoor generation: human beings spend approximately 90% of their time indoors, almost 70% of which is at home – this trend is now exacerbated by the lockdowns/restrictions imposed due to the COVID-19 pandemic. That large amount of time spent indoors may have negative consequences on health and well-being. Indeed, po...
Article
Full-text available
In this work, alkali-activated fly ash-derived foams were produced at room temperature by direct foaming using aluminum powder. The 1 cm3 foams (cubes) were then evaluated as adsorbents to extract heavy metals from aqueous solutions. The foams’ selectivity towards lead, cadmium, zinc, and copper ions was evaluated in single, binary, and multicompon...
Chapter
Alkali-activated materials (AAMs) are an emerging alternative to the use of common adsorbents in wastewater treatment applications for both environmental and technical reasons. Herein, the most relevant and recent research focusing the use of AAMs as adsorbents to depollute aqueous solutions is summarized and critically discussed. This chapter will...
Article
Graphitic carbon nitride (g-C3N4) possessing high thermal and chemical stability, non-toxicity, facile synthesis, and low band gap energy is a promising candidate for photocatalytic applications. In this study, bulk and...
Preprint
Full-text available
Modern life-style is creating an indoor generation: human beings spend approximately 90% of their time indoors, almost 70% of which is at home – this trend is now exacerbated by the lockdowns/restrictions imposed due to the COVID-19 pandemic. That large amount of time spent indoors may have negative consequences on health and well-being. Indeed, po...
Article
Full-text available
MXenes, a family of two-dimensional (2D) transition metal carbides, nitrides and carbonitrides based on earth-abundant constituents, are prospective candidates for energy conversion applications, including photocatalysis. While the activity of individual MXenes towards various photocatalytic processes is still debatable, these materials were proved...
Article
Full-text available
The immobilization of hazardous wastes in ordinary Portland cement (OPC)-based materials has been widely studied and implemented. OPC-based materials have a high carbon footprint associated with their production and geopolymer materials are a sustainable and eco-friendly alternative. Therefore, this work aimed to immobilize two hazardous industrial...
Article
Full-text available
Substitute Ordinary Portland Cement (OPC) by biomass fly ash (BFA) reduce the environmental impact produced by cement-based materials, and at the same time, decreased the economic and environmental burden associated with the landfilling of this waste. This study aims to evaluate the recycling of BFA as supplementary cementitious materials (SCMs) in...
Article
Abstrac This article describes the synthesis of tungsten doped (W–TiO2) nanoparticles and their incorporation into a coating to improve the air quality inside buildings. W–TiO2 was prepared using a sol-gel synthesis route incorporating 1%, 2.5% and 3% tungsten in TiO2. Coatings containing the nanoparticles were produced using a water/alcohol liquid...
Article
Energy demand in the construction sector has continued to grow over the past years, despite the European commitment to promote energy efficiency. The development of multifunctional materials to tackle the energy consumption and improve the thermal performance of buildings is in huge demand. Herein, we report for the first time the synthesis of a bi...
Article
Full-text available
The valorization of spent oil bleaching earths (SOBE) is crucial for the protection of the environment and the reuse of resources. In this research, alkali-activated binders were manufactured at room temperature using SOBE as a precursor by varying the mass ratio between the activating solutions of sodium silicate (Na2SiO3) and 6 M sodium hydroxide...
Article
Full-text available
In anaerobic digestion processes, pH has a vital role due to the direct impacts on the microbial community. An eco-friendly approach has been applied to control pH in anaerobic bioreactors, using waste-containing fly ash geopolymer spheres (GS) instead of powdered chemical compounds, to promote continuous alkalis leaching. The influence of GS poros...
Article
Full-text available
Ordinary Portland Cement is the most widely used binder in the construction sector; however, a very high carbon footprint is associated with its production process. Consequently, more sustainable alternative construction materials are being investigated, namely, one-part alkali activated materials (AAMs). In this work, waste-based one-part AAMs bin...
Article
Full-text available
Rendering mortars were prepared by replacing conventional sands, namely coarse sand (CS) and fine sand (FS), by different dosages of biomass dry bottom ash (BA) and fly ash (FA). Bottom ash was treated by sieving and washing and called treated bottom ash (TBA). All these ashes were characterized, and their effects on the physical and mechanical cha...
Article
Full-text available
Mill scale (MS) is a iron-rich waste generated in the wire drawing process with high iron content and is still mainly disposed in landfills. The scientific community has been studied its use in other applications such as pigments, concretes, among others. This work aims to study a new added-value application for MS—the development of coloured ceram...
Article
Improving traditional constructive solutions and finding new materials for more efficient building envelopes leads to significant opportunities to decrease the energy demand for heating and cooling, as well as to reduce global energy consumption and greenhouse gas emissions at the buildings’ level. The present work consists of the development and c...
Article
The recovery of valuable materials from waste fits the principle of circular economy and sustainable use of resources, but contaminants in the waste are still a major obstacle. This works proposes a novel approach to recover high-purity phosphorus (P) and nitrogen (N) from digestate of municipal solid waste based on the combination of two independe...
Article
Future generation building materials produced using sustainable precursors and exhibiting multifunctional properties are in huge demand, as they might be a key tool to tackle the carbon dioxide emissions from the building sector. This study provides new insights regarding the impact of the cork particle size on the hardened-state properties of inor...
Article
In this paper, we use Tunisian clay materials as alternative low-cost adsorbents, as well as substrates to immobilise TiO 2 for the decolouration of methylene blue (MB) dye solutions. The collected raw clay from the mine of Tamra was characterised by various techniques, such as X-ray diffraction (XRD), scanning electron microscopy (SEM) and X-ray f...
Article
Full-text available
This article reports a novel photocatalytic lime render for indoor and outdoor air quality improvement that is composed of a lime binder and doped TiO2 (KRONOClean 7000®) nanoparticles. These nanoparticles were distributed throughout the bulk of the finishing render, instead of as a thin coating, thus ensuring the durability of the photocatalytic p...
Article
Full-text available
Electroplating sludge (ES) is currently disposed in landfills and, because of its heavy metal content, poses serious threats to the environment and human health. However, ES might have potential use as colouring agent due to its high concentration of chromium and nickel. Thus, the present work aims at studying the effect of ES incorporation into st...
Article
The Achilles heel in the production of porous geopolymers (PGPs) by the direct foaming technique is the porous coalescence phenomenon. The control of pore size distribution and porosity type (closed or open) is mandatory, although difficult. In most of the published studies, this problem is overcome through the addition of chemical stabilizing agen...
Article
Hydrogen, as energy carrier, is a zero-emission fuel. Being green and clean, it is considered to play an important role in energy and environmental issues. Photocatalytic water splitting is a process used to generate hydrogen from the dissociation of water. Titanium dioxide is the archetype material for photocatalytic water splitting. However, beca...
Article
Outdoor and indoor air pollution has become a global concern in modern society. Although many policies and regulations on air quality have been promulgated worldwide over the past decades, airborne pollution still negatively affects health and therefore the life-style of human beings. One of the strategies to challenge this problem might be reducin...
Article
Full-text available
Construction is recognized as one of the most polluting and energy consuming industries worldwide, especially in developing countries. Therefore, Research and Development (R&D) of novel manufacturing technologies and green construction materials is becoming extremely compelling. This study aims at evaluating the reuse of various wastes, originated...
Article
Red mud-based inorganic polymer spheres were used as alternative pH regulators and process enhancers in sequencing batch anaerobic reactors treating cheese whey. This byproduct tends to quickly acidify under anaerobic conditions, and the common route to control pH and ensure suitable conditions for methane production involves the use of commercial...
Article
This work reports a simple and safe, but powerful, route to depollute lead-containing aqueous solutions. Inorganic polymer foams (cm-size) were used as bulk-type adsorbents. The influence of the specimens’ porosity and activator molarity on the foams’ physical properties and on their lead extraction ability was studied. Then, the best performing sa...
Article
Nanostructured systems showing reversible colour switching are envisaged to play a significant role in photo-switches, photo-optical sensors, smart windows, displays, optical storage memories. Most of the materials exhibiting reversible colour switching are organic molecules. However, their UV-light activation, low thermal and chemical stability, a...
Article
Calcareous sludge is an alkaline waste produced by the paper pulp industry that is commonly disposed of in land-fill. However, recent studies and the European regulations discourage such practice. This work investigates an alternative and innovative way to recycle and reuse this waste, as filler, in the production of green geopolymeric mortars inte...
Preprint
Outdoor and indoor air pollution is a global environmental concern in modern society. Although many policies and regulations on air quality have been promulgated worldwide over the past decades, airborne pollution still negatively affects health and therefore the life-style of human beings. One of the strategies to challenge this problem might be r...
Article
Electrochemical sensors for monitoring biochemical substances are attracting considerable attention. These devices are usually based on enzymes that are sensitive and very specific. Still, the activity of those enzymes is lost with changes in temperature or pH. Non-enzymatic electrochemical sensors – fabricated via the modification of the electrode...
Preprint
p>Indoor and outdoor air pollution remains a major health risk for human beings. Nitrogen oxides and volatile organic compounds are amongst the major pollutant found outdoor. Thus, actions to diminish such risks and to provide safer outdoor / indoor environment are required. In this research work, we have decorated the surface of TiO<sub>2</sub> wi...
Article
Full-text available
Reduction of the energy consumption and CO2 emissions by the building sector might be a huge driver to mitigate climate change. One promising approach to mitigate energy consumption is the use of lightweight and low thermal-conductivity materials that could reduce the energy losses inside buildings and at the same time the use of heating and coolin...
Article
Full-text available
This study was undertaken to valorize naturally occurring silica sand in the synthesis of new consolidated concrete materials. The mixtures of silica sand, calcium sulphate, commercial metakaolin, demolition materials were designed to propose sulphate and sodium silicate/NaOH activate concretes and geopolymers, respectively. Three raw silica sand s...
Preprint
p>Electrochemical sensors for monitoring biochemical substances are attracting considerable attention. These devices are usually based on enzymes that are sensitive and very specific. Still, the activity of those enzymes is lost with changes in temperature or pH. Non-enzymatic electrochemical sensors – fabricated via the modification of the electro...
Article
DOWNLOAD FREE FOR 1 MONTH AT: https://authors.elsevier.com/c/1aRxwI6yu4ckf Geopolymer foams (highly porous materials) have emerged as one of the most exciting materials over the past few years due to their remarkable properties, low cost and green synthesis protocol, enabling their use in various high added-value applications. Review papers on poro...
Article
DOWNLOAD FREE FOR 50 DAYS AT https://authors.elsevier.com/c/1aWWQ~2-EzKM- . Hexagonal ferrites can be employed in a multitude of applications, the most common hexaferrites are the M ferrites such as BaFe12O19 (barium hexaferrite, BaM). It is known that if Fe3+ is substituted with a combination of Ti4+/Co2+ the coercivity of BaM can be reduced to pr...
Preprint
p>Hydrogen, as energy carrier, is a zero-emission fuel. Being green and clean, it is considered to play an important role in energy and environmental issues. Photocatalytic water splitting is a process used to generate hydrogen from the dissociation of water. Titanium dioxide is still the archetype material for photocatalytic water splitting. Howev...
Preprint
p>Nanostructured systems showing reversible colour switching are envisaged to play a significant role in photo-switches, photo-optical sensors, smart windows, displays, optical storage memories. Most of the materials exhibiting reversible colour switching are organic compounds. However, their UV-light activation, low thermal and chemical stability,...
Article
This work discusses the influence of the aggregate granulometry and the binder/aggregate ratio on the engineering properties of novel green geopolymeric mortars. Two wastes generated by a Portuguese Kraft pulp industry are employed to manufacture the material: lime slaker grits (used as aggregate) and biomass fly ash (to partially replace the metak...
Article
In this study, the possibility of using glass fibre wastes as reinforcement agent of waste-based and low thermal conductivity geopolymer mortars was evaluated to expand on previous work performed on dense geopolymers. The individual and combined influence of the glass fibre and the blowing agent amount on the fresh- and hardened-state properties of...
Article
This work evaluates, for the first time, the possibility of producing multifunctional alkali-activated composites combining ultra-low density, low thermal conductivity, high acoustic absorption, and good moisture buffering capacity. The composites were prepared using cork as a lightweight aggregate. This novel material might promote energy savings...
Article
Full-text available
The use of wastes, some of them hazards, as raw materials of ceramic pigments has been a way to diminish their environmental impact, to economically valorize them, and to face the depletion of virgin raw materials. In this work were prepared pigments having in their composition only industrial wastes: Cr/Ni electroplating (ES), and sludges from the...