164 documents found, page 1 of 17
THE POTENTIAL OF OLIVE POMACE BIOCHAR FOR METAL RETENTION
Mourão, PauloThis paper is a review of the potential of olive pomace, a by-product of the olive sector, as a precursor for the production of biochar. In general, it presents a panorama of this sector, which is so important worldwide and particularly in the Mediterranean region, the largest olive and olive oil producing area in the world, representing 90% of global production. We also address the problem of the large amount ...
Wood and Mineral Byproducts Soft Activated as Adsorbents to Liquid-Phase Applic...
Mourão, Paulo; Cassavela, ClaúdioHuman activities generate byproducts and wastes that need to be valorised. This paper presents a comparative study on the valorisation of different natural byproducts, of vegetal and mineral origin, through their transformation into adsorbent materials. A series of byproducts (European wood pellets, African natural woods, natural charcoal, lignocellulosic ash, perlite and vermiculite minerals and expanded clay)...
Aplicação de lamas carbonatadas da industria extrativa e transformadora de pedr...
Martins, Ruben; Luis, Lopes; Afonso, Paula; Pires, Vera; Faria, Paula; Mourão, Paulo; Velez, Jorge; Azzalini, AntônioAs lamas carbonatadas (vulgarmente conhecidas por “natas”), resultam do processamento industrial de mármores e/ou calcários explorados no Anticlinal de Estremoz e no Maciço Calcário Estremenho, respectivamente. Tratando-se de materiais homogéneos e relativamente puros (> 95% CaCO 3 ), têm elevado potencial para aplicação industrial pelo que se justifica o estudo da viabilidade técnica e económica de aplicação e...
PRODUCTION OF WASTES IN A SMALL COUNTRY: PORTUGAL CASE STUDY
Assis, Carolina; Panizio, Roberta; Nobre, Catarina; Mourão, Paulo; Brito, PauloThis research delves into the landscape of Municipal Solid Waste (MSW) production and management in Portugal, shedding light on the intricate dynamics of waste generation, disposal, and recovery. The universal challenge of MSW management is accentuated, considering its substantial impact on the environment and the economy. In 2021, MSW comprised 28% of the total waste produced in mainland Portugal, emphasizing ...
Evaluation of Paper Pulp Industry Waste as a Conductivity and Water Colour Reducer
Mourão, Paulo; Gomes, José; Branco, SaraThis work consists in exploring the preparation, characterisation and application of adsorbents based on lignocellulosic materials obtained from waste from the paper pulp industry, namely “Knots and Rejects - KR” and “Primary Sludge - PS”. These carbon materials were prepared by carbonisation under nitrogen flow, N2, and by chemical activation with the activating agent phosphoric acid, H3PO4. The materials were...
Too Early Or Too Late? Assessing The Adoption Level of Precision Agriculture in...
Silva, Miguel Augusto Rodrigues; Pamplona, João Batista; Mourão, PauloThe adoption of Precision Agriculture (PA) is discussed in this article, focusing on Brazilian economy, one of the economies with the greatest potential for its adoption. The adoption of innovative practices entails different perceptions from the various communities involved – from researchers, innovators, to farmers. Thus, this paper discusses the different perception of these groups of economic agents in cont...
Catalyst Materials for Polymer Electrolyte Membrane Fuel Cells: Design and Appl...
Castanheiro, José; Cansado, Isabel; Mourão, PauloDue to the increase of the emissions of CO2, SOX, and NOx, it becomes imperative to replace the traditional fossil fuels by “clean fuels”. The use of fuel cells can decrease the amount of gases with the greenhouse effect. There are several types of fuel cells, which can transform chemical energy into electric energy. The PEMFC is a polymer electrolyte membrane to fuel cells. These fuel cells can be operated bet...
Integrated valorisation of Agricultural Plastic Waste as a strategy to improve ...
Filipe, Susana; Mourão, Paulo; Barroso, João; Tranchida, DavideThe agricultural sector generates a significant amount of plastic waste, which if not properly managed poses a threat to the environment. This paper introduces an overview on valorisation options of agricultural plastic waste which include recycling, energy recovery, pyrolysis, hydrothermal carbonization and hydrogen production. The publication addresses the importance of the application of an holistic approach...
A Novel Approach for the Reuse of Waste from the Extractive and Processing Indu...
Afonso, Paula; Pires, Vera; Faria, Paula; Azzalini, Antônio; Lopes, Luis; Mourão, Paulo; Martins, RubenThis paper discusses the historical use of natural stone for various purposes and highlights the substantial waste generated by quarries and stone processing plants in modern industrialized production. These waste materials are typically categorized into unused rock and sludges from processing. This accumulation of waste presents a global environmental challenge and a financial burden for the stone industry. In...
Mortar Based on Sludge from Carbonate Dimension Stone Processing Industry - an ...
Afonso, Paula; Azzalini, Antônio; Faria, Paula; Lopes, Luis; Martins, Ruben; Mourão, Paulo; Pires, VeraThe extractive and processing of carbonate dimension stone, such as limestone and marble is particularly important in Portugal. The main extractive centres are in the marble triangle formed by Estremoz, Borba, Vila Viçosa and also the Estremenho Limestone Massif. The large number of quarries and processing units, given the techniques used, both in extraction and processing, and the high-quality criteria require...