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The purpose of this work was to study the gas yield variation resulted from the cherry wood gasification with air using a lab-scale rotary kiln gasifier. The feedstock was continuously fed into the preheated reactor at 600°C, in co-current configuration, using atmospheric air as a gasifying agent. The results indicate the importance of oxidation reaction control, through the feeding flow rates of biomass and air and the reactants mixing rate. From the experiment, the hydrogen yields were about 2-4%, while the carbon monoxide varied between 8-21%. Additionally, the paper provides process observations based on the continuous monitoring of gas composition. The specific flow rates of substances and installation operating conditions were linked to process run through syngas composition.
Gabriela Ionescu; Raluca Nicoleta Tirtea; Cora Gheorghe-Bulmau; Cosmin Marculescu. Gas yield variation in wood biomass co-current air gasification process – continuous operation. E3S Web of Conferences 2020, 180, 02017 .
AMA StyleGabriela Ionescu, Raluca Nicoleta Tirtea, Cora Gheorghe-Bulmau, Cosmin Marculescu. Gas yield variation in wood biomass co-current air gasification process – continuous operation. E3S Web of Conferences. 2020; 180 ():02017.
Chicago/Turabian StyleGabriela Ionescu; Raluca Nicoleta Tirtea; Cora Gheorghe-Bulmau; Cosmin Marculescu. 2020. "Gas yield variation in wood biomass co-current air gasification process – continuous operation." E3S Web of Conferences 180, no. : 02017.
In the present paper, different types of pure and commercial plastic waste from different EU countries (UK, France, Italy, and Romania) were investigated for microstructure surface morphology and chemical properties by scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDXS). The goal of the current investigation was to determine the chemical composition of selected packaging materials and compare these measurements with data obtained through a carbon-hydrogen-nitrogen-sulfur-oxygen (CHNS-O) elemental analyzer, which is conventionally used to characterize waste materials. The capabilities of the experimental approach are discussed in connection with their application to the study of waste sample materials and in comparison with alternative experimental methods such as elemental analysis. The CHNS-O comparison is made between the present data obtained with SEM-EDXS instrument and EA 3000 elemental analyzer used in previews studies conducted by the authors. Results show a difference of composition among packaging from different countries that can affect the treatment adopted for its valorization and the strategies of circular economy.
Elena Cristina Rada; Gabriela Ionescu; Navarro Ferronato; Marco Ragazzi; Mario Raspanti; Fabio Conti; Vincenzo Torretta. Zooming on light packaging waste differences by scanning electron microscopy. Environmental Science and Pollution Research 2020, 1 -7.
AMA StyleElena Cristina Rada, Gabriela Ionescu, Navarro Ferronato, Marco Ragazzi, Mario Raspanti, Fabio Conti, Vincenzo Torretta. Zooming on light packaging waste differences by scanning electron microscopy. Environmental Science and Pollution Research. 2020; ():1-7.
Chicago/Turabian StyleElena Cristina Rada; Gabriela Ionescu; Navarro Ferronato; Marco Ragazzi; Mario Raspanti; Fabio Conti; Vincenzo Torretta. 2020. "Zooming on light packaging waste differences by scanning electron microscopy." Environmental Science and Pollution Research , no. : 1-7.
The study, presented in two parts, puts in discussion the experimental results of low and high temperature pyrolysis on agricultural residues using a tubular batch reactor. During the experiment, nitrogen was used both as reaction environment and gas products carrier. The work focusses mainly on the pyrolysis gas analytical composition resulted from the process. The first part of the research is dedicated to the effect of process low temperature on rape straw pyrolysis. The experiments were conducted at 300°C, 400°C and 500°C to observe the solid – gas transformation at relative low temperatures. The main results revealed that, by balancing the amount of the nitrogen, the rape straw pyrolysis gas distribution varies by average between: 72%-77% CO2, 22%-24% CO, 1%-4% H2. The density of the gas in the devolatilization stage varies by average between 1.6-1.7 kg/m3, while its higher heating value ranges from 4 MJ/Nm3 - 8 MJ/Nm3.
Gabriela Ionescu; Cora Bulmau; Cosmin Mărculescu. Bio-Gaseous Fuels from Agricultural Waste Pyrolysis (Part I). MATEC Web of Conferences 2019, 290, 11004 .
AMA StyleGabriela Ionescu, Cora Bulmau, Cosmin Mărculescu. Bio-Gaseous Fuels from Agricultural Waste Pyrolysis (Part I). MATEC Web of Conferences. 2019; 290 ():11004.
Chicago/Turabian StyleGabriela Ionescu; Cora Bulmau; Cosmin Mărculescu. 2019. "Bio-Gaseous Fuels from Agricultural Waste Pyrolysis (Part I)." MATEC Web of Conferences 290, no. : 11004.
The paper presents the experimental results of Food Court Waste air gasification using a batch reactor. This type of waste is generated mainly in the food court areas of services spaces, shopping centers, airports and malls and is generally composed of paper & cardboard, plastic, organic, wood, metal and glass waste. The process operating parameters were: temperatures between 650°C and 850°C and an equivalent ratio of 0.25 and 0.4 respectively. The study focused on the influence of process parameters on the energy conversion rate considering the cold gas and hot gas efficiency correlated with the feedstock carbon conversion rate. The recorded instantaneous concentrations of sampled gas species were plotted in time dependent graphs for accurate variation curves of gases concentrations. The results can be used to isolate the startup stage of the gasification process and to establish the optimal process parameters for increased overall energy efficiency. In conclusion, considering the current setup, operational parameters and process energy efficiency, the optimal temperature for the air gasification of Food Court Waste is 850ºC with an equivalent ratio of 0.40.
Raluca Nicoleta Tîrtea; Gabriela Ionescu; Cora Gheorghe-Bulmau; Cosmin Mărculescu. Experimental study of Food Court Waste air gasification process performances in a batch reactor. E3S Web of Conferences 2019, 112, 01019 .
AMA StyleRaluca Nicoleta Tîrtea, Gabriela Ionescu, Cora Gheorghe-Bulmau, Cosmin Mărculescu. Experimental study of Food Court Waste air gasification process performances in a batch reactor. E3S Web of Conferences. 2019; 112 ():01019.
Chicago/Turabian StyleRaluca Nicoleta Tîrtea; Gabriela Ionescu; Cora Gheorghe-Bulmau; Cosmin Mărculescu. 2019. "Experimental study of Food Court Waste air gasification process performances in a batch reactor." E3S Web of Conferences 112, no. : 01019.
The present research proposes two scenarios for the biomass conversion into valuable products within the integrated management of bio-resources. The scenarios have been developed considering: the biomass availability, material and by-products characteristics and the comprehensive combination of the primary technologies used for the conversion of the biomass mixtures into energy. In scenario 1 the biomass waste valorisation is made via integrated pyrolysis and combustion treatment, while in scenario 2 the biomass conversion in done considering the integration of the pyrolysis, gasification and combustion treatments into the conversion chain. The results revealed that all analysed scenarios purposed are self-independent from the energetic point of view.
Gabriela Ionescu; Cora Gheorghe-Bulmau. Biomass conversion into valuable products within the integrated management of bio-resources. E3S Web of Conferences 2019, 85, 07008 .
AMA StyleGabriela Ionescu, Cora Gheorghe-Bulmau. Biomass conversion into valuable products within the integrated management of bio-resources. E3S Web of Conferences. 2019; 85 ():07008.
Chicago/Turabian StyleGabriela Ionescu; Cora Gheorghe-Bulmau. 2019. "Biomass conversion into valuable products within the integrated management of bio-resources." E3S Web of Conferences 85, no. : 07008.
Elena Cristina Rada; Gabriela Ionescu; Marco Tubino; Werner Tirler; Maurizio Tava; Marco Ragazzi. Chapter 6 Perspectives of Unconventional PCDD/F Monitoring for a Steel Making Plant. Air Quality 2016, 121 -130.
AMA StyleElena Cristina Rada, Gabriela Ionescu, Marco Tubino, Werner Tirler, Maurizio Tava, Marco Ragazzi. Chapter 6 Perspectives of Unconventional PCDD/F Monitoring for a Steel Making Plant. Air Quality. 2016; ():121-130.
Chicago/Turabian StyleElena Cristina Rada; Gabriela Ionescu; Marco Tubino; Werner Tirler; Maurizio Tava; Marco Ragazzi. 2016. "Chapter 6 Perspectives of Unconventional PCDD/F Monitoring for a Steel Making Plant." Air Quality , no. : 121-130.
Vincenzo Torretta; Massimo Raboni; Sabrina Copelli; Elena Rada; Marco Ragazzi; Gabriela Ionescu; Tiberiu Apostol; Adrian Badea. Environmental Assessments in the Built Environment: Crucial yet Underdeveloped. Improving Urban Environments 2016, 27 -40.
AMA StyleVincenzo Torretta, Massimo Raboni, Sabrina Copelli, Elena Rada, Marco Ragazzi, Gabriela Ionescu, Tiberiu Apostol, Adrian Badea. Environmental Assessments in the Built Environment: Crucial yet Underdeveloped. Improving Urban Environments. 2016; ():27-40.
Chicago/Turabian StyleVincenzo Torretta; Massimo Raboni; Sabrina Copelli; Elena Rada; Marco Ragazzi; Gabriela Ionescu; Tiberiu Apostol; Adrian Badea. 2016. "Environmental Assessments in the Built Environment: Crucial yet Underdeveloped." Improving Urban Environments , no. : 27-40.
Constantin-Cristian Stroe; Valeriu Nicolae Panaitescu; Marco Ragazzi; Elena Cristina Rada; Gabriela Ionescu. Chapter 1. Some Considerations on the Environmental Impact of Highway Traffic. Transportation and the Environment 2016, 3 -16.
AMA StyleConstantin-Cristian Stroe, Valeriu Nicolae Panaitescu, Marco Ragazzi, Elena Cristina Rada, Gabriela Ionescu. Chapter 1. Some Considerations on the Environmental Impact of Highway Traffic. Transportation and the Environment. 2016; ():3-16.
Chicago/Turabian StyleConstantin-Cristian Stroe; Valeriu Nicolae Panaitescu; Marco Ragazzi; Elena Cristina Rada; Gabriela Ionescu. 2016. "Chapter 1. Some Considerations on the Environmental Impact of Highway Traffic." Transportation and the Environment , no. : 3-16.
Climate change is a reality all over the world, and its complexity is increasing. Therefore, sustainability has become a national and international concern, ingrained in many organizational processes. The ability of organizations to respond to sustainability concerns is sometimes hindered by the complexity of integrating sustainability into business models and by the need to rethink their strategic directions. In Romania, sustainable development has become a priority for businesses, but even though companies are showing some concern, there are yet to demonstrate any full commitment (they are mainly concerned with areas such as society and the environment). This paper assesses Romania’s involvement in the adoption of actions directed toward the reduction of pollutants and greenhouse gases, namely actions focused on reducing the main causes of pollution. This analysis compares the situation in Romania with that of the European Union. The main concerns can be categorized according to four sectors, which produce the highest quantity of carbon dioxide emissions in the world: the energy sector, the transport sector, the waste sector and the industry sector. The last section of this paper deals with the carbon footprint of Romania and its implications.
Lucian-Ionel Cioca; Larisa Ivascu; Elena Cristina Rada; Vincenzo Torretta; Gabriela Ionescu. Sustainable Development and Technological Impact on CO2 Reducing Conditions in Romania. Sustainability 2015, 7, 1637 -1650.
AMA StyleLucian-Ionel Cioca, Larisa Ivascu, Elena Cristina Rada, Vincenzo Torretta, Gabriela Ionescu. Sustainable Development and Technological Impact on CO2 Reducing Conditions in Romania. Sustainability. 2015; 7 (2):1637-1650.
Chicago/Turabian StyleLucian-Ionel Cioca; Larisa Ivascu; Elena Cristina Rada; Vincenzo Torretta; Gabriela Ionescu. 2015. "Sustainable Development and Technological Impact on CO2 Reducing Conditions in Romania." Sustainability 7, no. 2: 1637-1650.
Gabriela Ionescu; Elena Cristina Rada; Lucian Ionel Cioca. MUNICIPAL SOLID WASTE SORTING AND TREATMENT SCHEMES FOR THE MAXIMIZATION OF MATERIAL AND ENERGY RECOVERY IN A LATEST EU MEMBER. Environmental Engineering and Management Journal 2015, 14, 2537 -2544.
AMA StyleGabriela Ionescu, Elena Cristina Rada, Lucian Ionel Cioca. MUNICIPAL SOLID WASTE SORTING AND TREATMENT SCHEMES FOR THE MAXIMIZATION OF MATERIAL AND ENERGY RECOVERY IN A LATEST EU MEMBER. Environmental Engineering and Management Journal. 2015; 14 (11):2537-2544.
Chicago/Turabian StyleGabriela Ionescu; Elena Cristina Rada; Lucian Ionel Cioca. 2015. "MUNICIPAL SOLID WASTE SORTING AND TREATMENT SCHEMES FOR THE MAXIMIZATION OF MATERIAL AND ENERGY RECOVERY IN A LATEST EU MEMBER." Environmental Engineering and Management Journal 14, no. 11: 2537-2544.