Percorrer por autor "Pinho, Henrique J. O."
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- Análise da secção G. Mobilidade SustentávelPublication . Ribeiro, Anabela; Madeira, Ana Carla; Silva, Cecília; Pinho, Henrique J. O.; Ferreira, Rita; Tchepel, Oxana; Madeira, Ana Carla; Disterheft, Antje; Ribau Teixeira, Margarida; Caeiro, Sandra Sofia Ferreira da SilvaEste inquérito constitui a secção G do ‘Inquérito sobre Sustentabilidade no Ensino Superior em Portugal’ efetuado pela Rede Campus Sustentável às instituições de ensino superior (IES) Portuguesas e tem como objetivo caracterizá-las relativamente às iniciativas de promoção da mobilidade sustentável. Pretende-se ainda ter algum conhecimento das infraestruturas de que dispõem. De notar que este estudo tem o propósito de apoiar um inquérito de mobilidade mais extenso que se irá efetuar à comunidade académica das referidas IES.
- Autonomous patrol of water resources in natural and artificial systemsPublication . Barros, F.M.; Pinho, Henrique J. O.; Magalhães, Hugo; Ferreira, Carlos; Matos, PedroWater resources, being one of the most important natural resources, face major threats due to contamination by pollutants of various types and origins. Consequently, preservation, protection and sustainable use of natural resources is increasingly important. The “DragonFly” project aims to develop a system that solves the need for monitoring the quality of surface water in natural and artificial systems of different types, on a continuous and regular basis. It is intended to acquire water quality data in order to identify sources of pollution or to estimate the discharge and dispersion of contaminants along water courses. The system was specified to allow the acquisition of a specific set of environmental data that characterize the aquatic environment and help to detect variations (deviation) in water quality, such as temperature, pH, dissolved oxygen, redox, conductivity, salinity, and dissolved solids. The Castelo do Bode reservoir, was adopted in this work as a data acquisition area and for the development and testing of the system, due to its geographical proximity. It is the main national water reservoir for public supply, with a maximum extension of 60 km, it occupies an area of about 3 300 ha. The acquisition of real-time data is an essential condition in this type of application, as it will allow the immediate detection of pollution points and timely action on it. The available data continuity and regularity will allow the support of the aquatic environment studies and the forecasting systems modelling of future conditions, guiding the decision processes. To achieve this objective, a physical prototype was developed based on a floating electric vehicle (ASV ), to which several modules and/or satellite vehicles can be added, and which is already implemented at an advanced stage. In order to guarantee the continuity and regularity of the available data and to reduce system maintenance times and costs, it is necessary to ensure the autonomous operation of the supply system. Energy storage systems, autonomous refueling systems and independent energy conversion and storage systems are now being designed. The design of a versatile real-time water quality monitoring system contributes to the management and protection of water resources thus it can increase security in the water supply of populations and turn the resources management more efficient and sustainable.
- Bioenergy routes for valorizing constructed wetland vegetation: An overviewPublication . Pinho, Henrique J. O.; Mateus, D. M. R.Valorizing constructed wetlands vegetation into biofuels can be a way to contribute to mitigating the increasing energy demand, avoiding the use of arable land, freshwater, and fertilizers consumption, while simultaneously treating wastewater with eco-friendly technology. This work shortly overviews the main genera of wetland plants and the main routes of vegetal biomass conversion into biofuels including biochemical and thermochemical processes, and through a cross-search, in the Scopus database, the research intensity in bioenergy application for each genus was assessed. A total of 283 genera of wetland plants were identified and classified into five groups, from very common to very rare genera. The very common group includes 10 genera and contributes to 62% of the literature hits, while the 147 genera classified as very rare contribute to only 3% of the hits. Concerning the bioenergy applications, four genera stand out from the remaining. The plants of the genus Sorghum are the most referred to in bioenergy applications, followed by the genera Brassica, Miscanthus, and Saccharum. Miscanthus is a less common wetland plant, while the other genera are rarely applied in constructed wetlands. The relevance of bioenergy routes depends on the plants' group. For common wetland plants, the most relevant applications are biogas production, followed by bio-ethanol production, and pyrolysis processing. As a recommendation for future research works the genera with high energy potential should be evaluated as wetland vegetation, and it is recommended that the goal to recover wetland vegetation for bioenergy applications be viewed as an integral step of the design and implementation of constructed wetlands facilities.
- Combination of various solid wastes with fragmented limestone as filler for constructed wetlands used for wastewater treatmentPublication . Mateus, D. M. R.; Graça, Nuno; Alves, Ana; Pinho, Henrique J. O.This study aims to contribute to the development of eco-efficient constructed wetlands through the concept of circular economy and the use of waste to treat waste Combinations of five solid wastes were evaluated as filler materials for CWs used for wastewater treatment To evaluate the combined capability of the waste materials to wastewater treatment, five sets of unplanted lab-scale CWs were established The CWs were operated in a discontinuous mode for three successive fill and drain cycles The highest COD removal rate was obtained for a CW filled with limestone and cork waste 90.3+/-0.9%. The highest total nitrogen removal rate was obtained for a CW filled with limestone and clay brick fragments 84.8+/-0.1%. Total phosphorus removal percentage of 91.8+/-0.1% was achieved for a control CW filled with limestone It was observed that layer packed solid waste combination fillings are adequate in improving COD removal in limestone based CWs, and that all but the limestone snail shells filling have a very good performance for total nitrogen and total phosphorus removal from wastewater.
- Contribution of Constructed Wetlands for Reclaimed Water Production: A ReviewPublication . Pinho, Henrique J. O.; Mateus, D. M. R.Freshwater scarcity is a growing threat to sustainable development, which can be mitigated by adequate management of water resources. Agriculture and related activities consist in the main use of freshwater, but several other human activities present relevant contributions. Because most of the water uses imply the generation of resultant wastewater, the production and use of reclaimed water by appropriate technologies can be part of the solution to that issue. Considering that the use of constructed wetlands (CWs) can be a relevant contribution to the production of reclaimed water, as an eco-friendly alternative to costly advanced water treatment technologies, this work is a review of the last decade of literature on the use of CWs to produce reclaimed water. The results point to a usual focus on the production of reclaimed water for agriculture or urban spaces irrigation. In order to potentiate a broader application of CWs, some directions of future research and use of this green technology are proposed.
- Cultivation of Energy Crops in Constructed Wetlands for Wastewater Treatment: An OverviewPublication . Pinho, Henrique J. O.; Mateus, D. M. R.The need for sustainable, clean, and secure energy sources is a current issue for all nations. All kinds of vegetal biomass can be used as energy-source or as raw material for biofuel production, but some species are commonly classified as energy crops. This work evaluates the energy potential of 35 species of energy crops when produced in constructed wetlands (CW). Producing energy crops in CW is a route to link wastewater treatment to energy production, avoiding the abstraction of freshwater for crop irrigation, and simultaneously avoiding the use of arable land. However, for most of the energy crops, there are no data available in the literature about biomass productivity in CWs. Although 20 of the 35 crops have been tested as CW vegetation, the biomass productivity in CWs was only found for 13 species. Reported biomass productivity in CW is similar to or even higher than the productivity reported for conventional production, but most reported data is for pilot-scale CW, which points to the need for future work in full-scale systems. From the combination of biomass productivity and the biomass calorific value, Arundo donax, Miscanthus x giganteus, Cynodon dactylon, Phragmites australis, and Typha latifolia show higher ranges up to 3064 MJ/ha year for Arundo donax. Future works on CW design can be focused on the potential of using energy crops as vegetation.
- Descrição e objetivos do projeto ValorBioPublication . Pinho, Henrique J. O.; Mateus, D. M. R.; Pinho, Henrique J. O.; Mateus, D. M. R.
- Evaluation of solid waste stratified mixtures as constructed wetland fillers under different operation modesPublication . Mateus, D.M.R.; Pinho, Henrique J. O.Based on the strategy that all processes can and should be modified to contribute to a circular economy, this work evaluates the recovery of waste solids as filler material in Constructed Wetlands (CWs) used for wastewater treatment. Five sets of lab-scale CWs were assembled with mixtures of five waste solids and operated to evaluate the removal of chemical oxygen demand (COD) and nutrients from urban and industrial-types of wastewater. The adaptation and growth of the macrophyte Phragmites australis in the mixed-filler CWs was also monitored. Although all evaluated waste solids showed to be acceptable substrates for macrophyte development and wastewater treatment, CWs assembled with mixtures of limestone waste and coal slag showed the best plant growth indicators and wastewater treatment efficiencies. The CWs assembled with mixtures of limestone waste and clay brick fragments or cork granulates showed to be suitable alternatives. With exception for CWs filled with mixtures of limestone and snail shells, pollutant removal efficiencies up to 95%, 86% and 83% were obtained respectively for COD, total phosphorous and total nitrogen, depending on the type of wastewater and mode of operation. Removal efficiencies were not significantly affected by increased hydraulic rate. The CWs can be operated to a hydraulic loading rate of 0.056 m/d, which corresponds to a retention time of 1.5 days. The valorisation of solid waste as a filler can contribute to CWs closely participating in the creation of circular flows for the reuse of waste solids.
- Hydrogen Production via Wastewater Electrolysis – An Integrated Approach ReviewPublication . Cartaxo, Marco; Fernandes, José; Gomes, Mário; Pinho, Henrique J. O.; Nunes, Valentim; Coelho, PauloHuman activities generate enormous amounts of wastewater. The hydrogen production from this new resource has gained attention as an emergent technology. Incorporating photovoltaic energy production with different electrolysis systems which can treat wastewaters and produce hydrogen simultaneously will lead to an environmentally-friendly and sustainable hydrogen production.
- Inteligência para a Sustentabilidade das CidadesPublication . Pinho, Henrique J. O.; Lopes de Oliveira, Luís Miguel; Coelho, Paulo; Frazão Correia, Pedro; Panda, Renato
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