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This virtual special issue published in Renewable and Sustainable Energy Reviews contains 25 high-quality selected extended papers presented at the HERAKLION 2019 7th International Conference on Sustainable Solid Waste Management held in Heraklion, Crete in Greece from 26th to June 29, 2019. The articles published in this special issue focus on recent developments in sustainable waste-to-energy systems and waste management practices and highlight the critical challenges and potential solutions. The editorial paper aims to give a brief overview of the key findings and future perspectives proposed in these 25 selected papers. It is worth noting that although the articles presented in this special issue covered a wider range of topics, they are categorized into five categories. These include the latest developments in 1) waste-to-energy technologies, 2) biofuels and bioenergy, 3) waste valorization, 4) emerging renewable and sustainable energy systems, and finally, 5) biorefineries and circular economy.
Maria Loizidou; Konstantinos Moustakas; Mohammad Rehan; Abdul-Sattar Nizami; Meisam Tabatabaei. New developments in sustainable waste-to-energy systems. Renewable and Sustainable Energy Reviews 2021, 151, 111581 .
AMA StyleMaria Loizidou, Konstantinos Moustakas, Mohammad Rehan, Abdul-Sattar Nizami, Meisam Tabatabaei. New developments in sustainable waste-to-energy systems. Renewable and Sustainable Energy Reviews. 2021; 151 ():111581.
Chicago/Turabian StyleMaria Loizidou; Konstantinos Moustakas; Mohammad Rehan; Abdul-Sattar Nizami; Meisam Tabatabaei. 2021. "New developments in sustainable waste-to-energy systems." Renewable and Sustainable Energy Reviews 151, no. : 111581.
Konstantinos Moustakas; Maria Loizidou. Waste and biomass management and valorization. Environmental Science and Pollution Research 2021, 28, 24224 -24229.
AMA StyleKonstantinos Moustakas, Maria Loizidou. Waste and biomass management and valorization. Environmental Science and Pollution Research. 2021; 28 (19):24224-24229.
Chicago/Turabian StyleKonstantinos Moustakas; Maria Loizidou. 2021. "Waste and biomass management and valorization." Environmental Science and Pollution Research 28, no. 19: 24224-24229.
Konstantinos Moustakas; Maria Loizidou. Editorial. Biomass Conversion and Biorefinery 2021, 11, 205 -205.
AMA StyleKonstantinos Moustakas, Maria Loizidou. Editorial. Biomass Conversion and Biorefinery. 2021; 11 (2):205-205.
Chicago/Turabian StyleKonstantinos Moustakas; Maria Loizidou. 2021. "Editorial." Biomass Conversion and Biorefinery 11, no. 2: 205-205.
Agricultural biomass can be best described as the organic matter residues from farming that remain within the fields after harvesting, along with tree trimmings. From the overall Greek Energy Balance, only a small fraction consists of biomass and this has been the main driving force behind this study. Due to the numerous ongoing agricultural activities, western Greece was selected as an ideal area for a case study. As a second step, the aim was to investigate the feasibility of the current anaerobic digestion plants to utilize the total biomass as feedstock. An additional scope to provide certifiable proof of the essential rural biomass assets available. Information on the potential of agricultural biomass is provided, with a focus on the performance specifications and the social advantages, but also the soil added substances and the produced biofuels. Subsequently, two options for waste management were discussed to illustrate the possibility of generating energy. The anaerobic digestion plants available in western Greece are illustrated in detail and the yearly rate of the main agrarian biomass is evaluated to be 715,080 tons. Arable crops, mechanical plants and tree trimming are recorded as the noteworthy sources. It is estimated that the proposed anaerobic digestion system will handle the entire amount of biomass and deliver max per year electricity 775 GWh and thermal energy 1.119 GWh.
Konstantinos Moustakas; Dimitrios Sotiropoulos; Stergios Vakalis. Evaluation of the biogas potential of agricultural biomass waste for energy applications in Greece: A case study of the western Greece region. Waste Management & Research: The Journal for a Sustainable Circular Economy 2020, 39, 438 -447.
AMA StyleKonstantinos Moustakas, Dimitrios Sotiropoulos, Stergios Vakalis. Evaluation of the biogas potential of agricultural biomass waste for energy applications in Greece: A case study of the western Greece region. Waste Management & Research: The Journal for a Sustainable Circular Economy. 2020; 39 (3):438-447.
Chicago/Turabian StyleKonstantinos Moustakas; Dimitrios Sotiropoulos; Stergios Vakalis. 2020. "Evaluation of the biogas potential of agricultural biomass waste for energy applications in Greece: A case study of the western Greece region." Waste Management & Research: The Journal for a Sustainable Circular Economy 39, no. 3: 438-447.
School of Chemical Engineering, Unit of Environmental Science & Technology, National Technical University of Athens, 9 Heroon Polytechniou Street, Zographou Campus, 15773, Athens, Greece Maria Loizidou & Konstantinos Moustakas You can also search for this author in PubMed Google Scholar You can also search for this author in PubMed Google Scholar Correspondence to Maria Loizidou. Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations. Reprints and Permissions Loizidou, M., Moustakas, K. Editorial. Waste Biomass Valor (2020). https://doi.org/10.1007/s12649-020-01239-3 Download citation Published: 12 September 2020 DOI: https://doi.org/10.1007/s12649-020-01239-3
Maria Loizidou; Konstantinos Moustakas. Editorial. Waste and Biomass Valorization 2020, 11, 5137 -5137.
AMA StyleMaria Loizidou, Konstantinos Moustakas. Editorial. Waste and Biomass Valorization. 2020; 11 (10):5137-5137.
Chicago/Turabian StyleMaria Loizidou; Konstantinos Moustakas. 2020. "Editorial." Waste and Biomass Valorization 11, no. 10: 5137-5137.
Metallurgical plants constituting of smelters and refineries recover metals (i.e., copper) from mineral deposits. Copper production generates several waste streams of which slag, sludge and dust are generated in the largest quantities. The need to eliminate or at least reduce their adverse effects on the environment call for developing methods for recovering valuable components such as copper, zinc and iron through their selective separation from toxic components present in the waste (mainly arsenic and lead). This can be achieved through hydrometallurgical methods (leaching with organic and inorganic media), techniques facilitating mobility of elements (roasting with leaching) and biological processes (bioleaching). The valorization of metallurgical waste as a source of fertilizer micronutrients can be a sustainable and value-added direction of its management. This review presents ways of useful-metals recovery from the copper smelter and refinery wastes, including selective separation of valuable metals. The novelty of this review is a demonstration of the application potential of recovered components from metallurgical waste in the agricultural sector.
Katarzyna Mikula; Grzegorz Izydorczyk; Dawid Skrzypczak; Konstantinos Moustakas; Anna Witek-Krowiak; Katarzyna Chojnacka. Value-added strategies for the sustainable handling, disposal, or value-added use of copper smelter and refinery wastes. Journal of Hazardous Materials 2020, 403, 123602 .
AMA StyleKatarzyna Mikula, Grzegorz Izydorczyk, Dawid Skrzypczak, Konstantinos Moustakas, Anna Witek-Krowiak, Katarzyna Chojnacka. Value-added strategies for the sustainable handling, disposal, or value-added use of copper smelter and refinery wastes. Journal of Hazardous Materials. 2020; 403 ():123602.
Chicago/Turabian StyleKatarzyna Mikula; Grzegorz Izydorczyk; Dawid Skrzypczak; Konstantinos Moustakas; Anna Witek-Krowiak; Katarzyna Chojnacka. 2020. "Value-added strategies for the sustainable handling, disposal, or value-added use of copper smelter and refinery wastes." Journal of Hazardous Materials 403, no. : 123602.
Significant quantities of paper waste (PW) have been accumulated in recent years and the reuse/recycling of PW is required due to environmental concerns. In the present study, printed PW was used as a peat (P) substitute in growing medium for the Brassica seedlings production, considering recycling, sustainable agriculture, and partly peat replacement. Seeds of cauliflower, broccoli, and cabbage were seeded in growing media made of 0–10–30–50% PW. The addition of PW improved the growing media pH and mineral content, reduced the media aeration, and affected seed emergence. The PW decreased plant growth and the effects were more pronounced at 50% PW. The PW ≥ 30% decreased stomatal conductance, while chlorophyll fluorescence and content of chlorophylls decreased with high PW ratio, negatively affecting the plant physiology. The PW decreased plant sodium and iron and increased potassium, calcium, magnesium, and copper content. The PW increased antioxidant activity to a certain degree for cauliflower and cabbage and resulted in no change for broccoli, while polyphenols increased in cabbage seedlings. The addition of PW did not cause cellular damage as both lipid peroxidation and hydrogen peroxide production remained at low levels, maintaining low levels on the antioxidant enzymes (catalase, superoxide dismutase, peroxidase) metabolism. The present study shows that low PW content can partially replace peat for Brassica seedling production under a sustainable agriculture and environmentally friendly scheme.
Antonios Chrysargyris; Panayiota Xylia; Gorkem Akinci; Konstantinos Moustakas; Nikolaos Tzortzakis. Printed Paper Waste as an Alternative Growing Medium Component to Produce Brassica Seedlings under Nursery Conditions. Sustainability 2020, 12, 5992 .
AMA StyleAntonios Chrysargyris, Panayiota Xylia, Gorkem Akinci, Konstantinos Moustakas, Nikolaos Tzortzakis. Printed Paper Waste as an Alternative Growing Medium Component to Produce Brassica Seedlings under Nursery Conditions. Sustainability. 2020; 12 (15):5992.
Chicago/Turabian StyleAntonios Chrysargyris; Panayiota Xylia; Gorkem Akinci; Konstantinos Moustakas; Nikolaos Tzortzakis. 2020. "Printed Paper Waste as an Alternative Growing Medium Component to Produce Brassica Seedlings under Nursery Conditions." Sustainability 12, no. 15: 5992.
Spent Coffee Grounds worldwide production is estimated at around 6 M tons only at industrial level. The abundance and the heterogeneity of this substrate make it an ideal substrate for a biorefinery approach based on the “cascade biorefinery hierarchy”. Currently, the major part of spent coffee grounds is sent to incineration and landfill disposal, options which should be avoided. Instead, they could be valorised through biofuels production. All the operational parameters leading to the highest biogas (350-400LCH4/kgTVS), bioethanol (3–4%v/v) and biodiesel (over 90% of Fatty Acid Methyl Esters concentration) yields from spent coffee grounds have been discussed in this review paper. They are rich in an oil phase containing different added-value molecules (tocopherols, cafestol, kahweol along with linoleic and palmitic acids), which can be extracted and used as additives for food, cosmetic and pharmaceutical applications. Solid/liquid extraction techniques of coffee oil from spent coffee grounds such as the most common Soxhlet technique and the more innovative fluids in supercritical conditions have been discussed, with coffee oil recovery of around 5–15%w/w and 15–20%w/w, respectively. The most recent applications of the extracted coffee oil have been also presented: the added-value molecules recovery and purification after micro/ultra and nano filtrations processes and the polyhydroxyalkanoates (0.84 g/g) and biosurfactants (3.5 g/L) production. Considering the whole information, an integrated biorefinery scheme, along with the respective mass balances were proposed. The novelty of this paper lies in the integration of the state-of-the-art data, in a biorefinery concept that would allow the production of both biofuels and value-added products.
Federico Battista; Elli Maria Barampouti; Sofia Mai; David Bolzonella; Dimitris Malamis; Konstantinos Moustakas; Maria Loizidou. Added-value molecules recovery and biofuels production from spent coffee grounds. Renewable and Sustainable Energy Reviews 2020, 131, 110007 .
AMA StyleFederico Battista, Elli Maria Barampouti, Sofia Mai, David Bolzonella, Dimitris Malamis, Konstantinos Moustakas, Maria Loizidou. Added-value molecules recovery and biofuels production from spent coffee grounds. Renewable and Sustainable Energy Reviews. 2020; 131 ():110007.
Chicago/Turabian StyleFederico Battista; Elli Maria Barampouti; Sofia Mai; David Bolzonella; Dimitris Malamis; Konstantinos Moustakas; Maria Loizidou. 2020. "Added-value molecules recovery and biofuels production from spent coffee grounds." Renewable and Sustainable Energy Reviews 131, no. : 110007.
Mercury is a toxic element, which can be found in air, water and soil in several inorganic and organic forms. Mercury pollution comes from a variety of industrial sources, including vinyl-chloride, pulp and paper, fertilizers and pharmaceuticals industry, gold mining and cement production. Gels have increasingly attracted the interest over the past decades and one of the investigated applications is the fast removal of organic substances, metals and other cations and anions from water. In this work, two types of cryogels were synthesized at sub-zero temperature by free-radical polymerization technique, characterized by using a set of complimentary methods and used for the removal of mercury from aqueous solutions of different chemistry. Kinetics and equilibrium studies were performed in ultra-pure water solutions in order to study the mechanisms in the presence nitrate and chloride ions. The cryogels exhibited excellent efficiency towards mercury removal from all model solutions. Moreover, the cryogels were tested in different water matrixes (tap, river and sea water) and compared to commercial adsorbents (activated carbon, strong acid resin and zeolite Y). Cryogels were able to remove mercury much faster than commercial adsorbents with the exception of seawater where activated carbon was superior.
A. Zh. Baimenov; D.A. Berillo; K. Moustakas; Vassilis Inglezakis. Efficient removal of mercury (II) from water by use of cryogels and comparison to commercial adsorbents under environmentally relevant conditions. Journal of Hazardous Materials 2020, 399, 123056 .
AMA StyleA. Zh. Baimenov, D.A. Berillo, K. Moustakas, Vassilis Inglezakis. Efficient removal of mercury (II) from water by use of cryogels and comparison to commercial adsorbents under environmentally relevant conditions. Journal of Hazardous Materials. 2020; 399 ():123056.
Chicago/Turabian StyleA. Zh. Baimenov; D.A. Berillo; K. Moustakas; Vassilis Inglezakis. 2020. "Efficient removal of mercury (II) from water by use of cryogels and comparison to commercial adsorbents under environmentally relevant conditions." Journal of Hazardous Materials 399, no. : 123056.
Food waste could be acknowledged as an auspicious feedstock for bioethanol production, given its high organic and polysaccharides’ content. In an effort to render enzymatic hydrolysis of food waste more efficient and maximize sugar release, six different thermal, sono-electrochemical, and chemical pretreatment methods were examined. In all cases, starch was solubilized from 26.8 to 42.8% releasing from 1.38 to 2.14 g glucose per 100 g food waste. After 6 h of enzymatic saccharification, the glucose yield was higher than the respective value of the control trial (no pretreatment) for all the experiments, apart from the hydrolysates from thermal autoclaving, implying the presence of possible inhibitory compounds. Saccharification yields ranging 16.43–17.31 g glucose per 100 g raw material after sono-electrochemical pretreatments were not significantly improved and thus if other techno-economic factors are also taken into account, their application may not stand as a viable option. The highest glucose concentrations were observed in food waste hydrolysates that had been subjected to oil extraction with hexane, with 21.66 g glucose per 100 g raw material and 90.30% and 53.75% starch and cellulose degradations, respectively. Thus, oil extraction was qualified as an appropriate pretreatment for food waste, as high glucose yield and starch and cellulose degradations were obtained after enzymatic hydrolysis. Graphical abstract
Mir Edris Taheri; Erfaneh Salimi; Konstantinos Saragas; Jelica Novakovic; Elli Maria Barampouti; Sofia Mai; Dimitris Malamis; Konstantinos Moustakas; Maria Loizidou. Effect of pretreatment techniques on enzymatic hydrolysis of food waste. Biomass Conversion and Biorefinery 2020, 11, 219 -226.
AMA StyleMir Edris Taheri, Erfaneh Salimi, Konstantinos Saragas, Jelica Novakovic, Elli Maria Barampouti, Sofia Mai, Dimitris Malamis, Konstantinos Moustakas, Maria Loizidou. Effect of pretreatment techniques on enzymatic hydrolysis of food waste. Biomass Conversion and Biorefinery. 2020; 11 (2):219-226.
Chicago/Turabian StyleMir Edris Taheri; Erfaneh Salimi; Konstantinos Saragas; Jelica Novakovic; Elli Maria Barampouti; Sofia Mai; Dimitris Malamis; Konstantinos Moustakas; Maria Loizidou. 2020. "Effect of pretreatment techniques on enzymatic hydrolysis of food waste." Biomass Conversion and Biorefinery 11, no. 2: 219-226.
Propane-Precooled Mixed Refrigerant (C3MR) and Single Mixed Refrigerant (SMR) processes are considered as optimal choices for onshore and offshore natural gas liquefaction, respectively. However, from thermodynamics point of view, these processes are still far away from their maximum achievable energy efficiency due to nonoptimal execution of the design variables. Therefore, Liquefied Natural Gas (LNG) production is considered as one of the energy-intensive cryogenic industries. In this context, this study examines a single-solution-based Vortex Search (VS) approach to find the optimal design variables corresponding to minimal energy consumption for LNG processes, i.e., C3MR and SMR. The LNG processes are simulated using Aspen Hysys and then linked with VS algorithm, which is coded in MATLAB. The results indicated that the SMR process is a potential process for offshore sites that can liquefy natural gas with 16.1% less energy consumption compared with the published base case. Whereas, for onshore LNG production, the energy consumption for the C3MR process is reduced up to 27.8% when compared with the previously published base case. The optimal designs of the SMR and C3MR processes are also found via distinctive well-established optimization approaches (i.e., genetic algorithm and particle swarm optimization) and their performance is compared with that of the VS methodology. The authors believe this work will greatly help the process engineers overcome the challenges relating to the energy efficiency of LNG industry, as well as other mixed refrigerant-based cryogenic processes.
Muhammad Abdul Qyyum; Muhammad Yasin; Alam Nawaz; Tianbiao He; Wahid Ali; Junaid Haider; Kinza Qadeer; Abdul-Sattar Nizami; Konstantinos Moustakas; Moonyong Lee. Single-Solution-Based Vortex Search Strategy for Optimal Design of Offshore and Onshore Natural Gas Liquefaction Processes. Energies 2020, 13, 1732 .
AMA StyleMuhammad Abdul Qyyum, Muhammad Yasin, Alam Nawaz, Tianbiao He, Wahid Ali, Junaid Haider, Kinza Qadeer, Abdul-Sattar Nizami, Konstantinos Moustakas, Moonyong Lee. Single-Solution-Based Vortex Search Strategy for Optimal Design of Offshore and Onshore Natural Gas Liquefaction Processes. Energies. 2020; 13 (7):1732.
Chicago/Turabian StyleMuhammad Abdul Qyyum; Muhammad Yasin; Alam Nawaz; Tianbiao He; Wahid Ali; Junaid Haider; Kinza Qadeer; Abdul-Sattar Nizami; Konstantinos Moustakas; Moonyong Lee. 2020. "Single-Solution-Based Vortex Search Strategy for Optimal Design of Offshore and Onshore Natural Gas Liquefaction Processes." Energies 13, no. 7: 1732.
Hydropower is the renewable energy with the highest power production worldwide. At the same time the output flow of the water that is being used for hydroelectric power production can fluctuate significantly. The ability to “recharge” the dams with water from excess variable renewable energy technologies (VRE) can be used for storage and as a buffer for smoothing the production peaks of VRE. This study presented the idea of the “Hydrobattery” scheme which combines the concepts of “open-loop” and “closed-loop” pumped storage technologies along with the concept of energy storage and water recirculation. The Canyon Ferry Dam was used as a case study and water was modelled to be recirculating back to the Dam from the Helena Valley reservoir. The hydropower production from the Canyon Ferry Dam is below the nominal value of 50 MW and has fluctuated from 34.74 MW up to 41.46 MW for the period between 2014 and 2018. The application of “Hydrobattery” would be able to increase the power output by 2.39–3.39 MW of additional power, and an increase of power production between 5.7% and 9.7%. Also, the concept of “Hydrobattery” can be used as a potential water management system for connected water reservoirs.
Stergios Vakalis; Konstantinos Kaffas; Konstantinos Moustakas. The water-energy-climate nexus concept of “Hydrobattery”: Storing excess Variable Renewable Energy (VRE) at the Canyon Ferry Dam. Renewable Energy 2020, 155, 547 -554.
AMA StyleStergios Vakalis, Konstantinos Kaffas, Konstantinos Moustakas. The water-energy-climate nexus concept of “Hydrobattery”: Storing excess Variable Renewable Energy (VRE) at the Canyon Ferry Dam. Renewable Energy. 2020; 155 ():547-554.
Chicago/Turabian StyleStergios Vakalis; Konstantinos Kaffas; Konstantinos Moustakas. 2020. "The water-energy-climate nexus concept of “Hydrobattery”: Storing excess Variable Renewable Energy (VRE) at the Canyon Ferry Dam." Renewable Energy 155, no. : 547-554.
Coal industry is a significant pillar of the European economy and is responsible for a quarter of the energy production. The gradual decarbonization of the energy sector must take into consideration the regions that require a transition period. In this framework, this study presents the case of co-combusting conventional fuels and biocoals from agrowaste in order to reduce the carbon footprint of existing coal plants during this transition period. Along with the more common case of torrefied biomass, two novel biocoals that are produced by means of frictional pyrolytic conversion are also considered in this analysis and the co-combustion is modeled thermodynamically. The scope of the study has been the calculation of CO2 and NOx emissions for the different potential fuel blends. Of biocoals with conventional coal fuels, i.e., anthracite bituminous, subbituminous, and lignite coal. The heating values of the fuel blends varied significantly from 12.5–30 Mj/kg. The CO2 emissions per kg of input ranged from per kg of input 1.4–3 kg of CO2, with subbituminous coal projected the best performance in this metric. Coals of higher heating values, i.e., anthracite and bituminous coal, performed also well but the metric of CO2 emissions per MJ of input was not comparatively as good and exceeded the level of 95 g of CO2 per MJ of input. On the contrary, lignite CO2 emissions per MJ of input was closer to 90 g of CO2 per MJ of input and this could be explained from the fact that the higher carbon content of anthracite and bituminous coal did not translate to analogically higher heating values. The comparative performance of lignite coal becomes the optimal choice in respect to CO2 emissions per MJ of input for fuel blends that use biocoal ratios higher than 40%. This is an interesting outcome that provides an insight of an alternative pathway for reducing the carbon footprint of low rank coal energy production facilities and can be a helpful tool during the transition of European energy sector towards renewable energy systems.
Stergios Vakalis; Konstantinos Moustakas. Modeling the co-combustion of coal and biocoal from the novel process of frictional pyrolysis for reducing the emissions of coal plants. Biomass Conversion and Biorefinery 2020, 1 -9.
AMA StyleStergios Vakalis, Konstantinos Moustakas. Modeling the co-combustion of coal and biocoal from the novel process of frictional pyrolysis for reducing the emissions of coal plants. Biomass Conversion and Biorefinery. 2020; ():1-9.
Chicago/Turabian StyleStergios Vakalis; Konstantinos Moustakas. 2020. "Modeling the co-combustion of coal and biocoal from the novel process of frictional pyrolysis for reducing the emissions of coal plants." Biomass Conversion and Biorefinery , no. : 1-9.
Several energy transition plans attempt to establish low-carbon practices towards a circular bio-economy in order to reduce greenhouse gas emissions. However, most actions only try to assuage the impacts of climate change without improving the resource flows generated by human activities. In this paper, we propose a semi-quantitative assessment of the impacts of biowaste-based energy transition by engaging all relevant social stakeholders' evaluation in the strategic plan. This holistic approach models a Decision Support System (DSS) to effectively evaluate the interplay of local and sectoral low-carbon actions. Regional energy alliances and stakeholders are used for participatory modeling to promote the buildup of the learning base of this DSS. The core pillar of the DSS involves the application of advanced features of soft computing for the development of a Fuzzy Cognitive Map (FCM) that elicits the inter-causalities of the critical factors affecting the energy transitions towards bio-economy options. The concepts participating in the map are established by experts, and their interrelations via a learning process that utilizes survey statistics. The strands of research include scenarios to highlight the effect of energy provision to urbanization and the increase of urban actors (social, technological, political) in influencing the decision making related to low-carbon policies. Particularly, we study a use case of a Greek region that, despite its munificent agricultural production, also disclosures a stimulated manufacturing economy sector. The proposed decision making tool uses analytics and optimization algorithms to guide competent authorities and decision makers to sustainable energy transitioning towards decarbonization.
Konstantinos Kokkinos; Vayos Karayannis; Konstantinos Moustakas. Circular bio-economy via energy transition supported by Fuzzy Cognitive Map modeling towards sustainable low-carbon environment. Science of The Total Environment 2020, 721, 137754 .
AMA StyleKonstantinos Kokkinos, Vayos Karayannis, Konstantinos Moustakas. Circular bio-economy via energy transition supported by Fuzzy Cognitive Map modeling towards sustainable low-carbon environment. Science of The Total Environment. 2020; 721 ():137754.
Chicago/Turabian StyleKonstantinos Kokkinos; Vayos Karayannis; Konstantinos Moustakas. 2020. "Circular bio-economy via energy transition supported by Fuzzy Cognitive Map modeling towards sustainable low-carbon environment." Science of The Total Environment 721, no. : 137754.
Juan Camilo Solarte Toro; Yessica Chacón-Pérez; Sara Piedrahita-Rodríguez; Jhonny Alejandro Poveda Giraldo; José Teixeira; Konstantinos Moustakas; Carlos Ariel Cardona Alzate. Effect of dilute sulfuric acid pretreatment on the physicochemical properties and enzymatic hydrolysis of coffee cut-stems. Energy 2020, 195, 1 .
AMA StyleJuan Camilo Solarte Toro, Yessica Chacón-Pérez, Sara Piedrahita-Rodríguez, Jhonny Alejandro Poveda Giraldo, José Teixeira, Konstantinos Moustakas, Carlos Ariel Cardona Alzate. Effect of dilute sulfuric acid pretreatment on the physicochemical properties and enzymatic hydrolysis of coffee cut-stems. Energy. 2020; 195 ():1.
Chicago/Turabian StyleJuan Camilo Solarte Toro; Yessica Chacón-Pérez; Sara Piedrahita-Rodríguez; Jhonny Alejandro Poveda Giraldo; José Teixeira; Konstantinos Moustakas; Carlos Ariel Cardona Alzate. 2020. "Effect of dilute sulfuric acid pretreatment on the physicochemical properties and enzymatic hydrolysis of coffee cut-stems." Energy 195, no. : 1.
This paper explores the challenge to turn restaurant food waste from environmental issue to energy asset. The transformation of the dehydrated restaurant food waste to used oil, ethanol and methane was investigated. Each process unit was studied and optimised. Thermal dehydration was adopted producing a dried feedstock suitable for the downstream processes as well as a condensate rich in volatile fatty acids with a biomethane potential yield of 1.24 L CH4/L. In the oil extraction process, the application of hexane, 20 Soxhlet cycles and solvent to feedstock ratio equal to 2 provided 81.76% oil yield with quality suitable for transesterification. Different loadings of non-commercial amylolytic enzyme were examined so as to enhance the starch bioconversion efficiency. Five microlitres of enzyme per gramme of starch and 90 min of saccharification time were selected as the optimum operating conditions for producing a hydrolysate that could be efficiently fermented to ethanol. The anaerobic biodegradability of the resulting stillage (415 L CH4/kg VS) could further promote the viability of the whole treatment train. The experimental results were integrated in a material flow diagram in order to enlighten the assessment of the biorefinery scheme.
E. Salimi; M. E. Taheri; K. Passadis; J. Novacovic; E. M. Barampouti; S. Mai; Konstantinos Moustakas; D. Malamis; Maria Loizidou. Valorisation of restaurant food waste under the concept of a biorefinery. Biomass Conversion and Biorefinery 2020, 11, 661 -671.
AMA StyleE. Salimi, M. E. Taheri, K. Passadis, J. Novacovic, E. M. Barampouti, S. Mai, Konstantinos Moustakas, D. Malamis, Maria Loizidou. Valorisation of restaurant food waste under the concept of a biorefinery. Biomass Conversion and Biorefinery. 2020; 11 (2):661-671.
Chicago/Turabian StyleE. Salimi; M. E. Taheri; K. Passadis; J. Novacovic; E. M. Barampouti; S. Mai; Konstantinos Moustakas; D. Malamis; Maria Loizidou. 2020. "Valorisation of restaurant food waste under the concept of a biorefinery." Biomass Conversion and Biorefinery 11, no. 2: 661-671.
Anaerobically digested agricultural waste, such as straw digestate, still consists of residual lignin and carbohydrates that may be utilised as substrate for sugars production and alcoholic fermentation. Chemical pretreatment combined with enzymatic hydrolysis was investigated as an alternative valorisation route for digestate. Acid pretreatment along with enzymatic hydrolysis was found to yield low sugars recoveries (2–39%), casting doubt on its suitability for ethanol production. In contrary, alkaline pretreatment and enzymatic hydrolysis is a better approach with elevated saccharification yields reaching up to 72%. Ethanol fermentation of alkaline pretreated digestate presented yields up to 65% consuming all the available glucose, implying that no inhibitory factors are present. Conclusively, according to the experimental results the perspective of a new integrated system is enforced. This system combines ethanol production with anaerobic digestion simultaneously producing energy in the form of ethanol and methane and improving the overall energy balance.
Vasileia Stoumpou; Jelica Novakovic; Nikoleta Kontogianni; Elli Maria Barampouti; Sofia Mai; Konstantinos Moustakas; Dimitris Malamis; Maria Loizidou. Assessing straw digestate as feedstock for bioethanol production. Renewable Energy 2020, 153, 261 -269.
AMA StyleVasileia Stoumpou, Jelica Novakovic, Nikoleta Kontogianni, Elli Maria Barampouti, Sofia Mai, Konstantinos Moustakas, Dimitris Malamis, Maria Loizidou. Assessing straw digestate as feedstock for bioethanol production. Renewable Energy. 2020; 153 ():261-269.
Chicago/Turabian StyleVasileia Stoumpou; Jelica Novakovic; Nikoleta Kontogianni; Elli Maria Barampouti; Sofia Mai; Konstantinos Moustakas; Dimitris Malamis; Maria Loizidou. 2020. "Assessing straw digestate as feedstock for bioethanol production." Renewable Energy 153, no. : 261-269.
The potential of biosorption as a process of ions binding from solutions has not yet been fully exploited. So far, the works have focused predominantly on removing ions (heavy metals or dyes) from the solutions, mainly on a laboratory scale. The surface of biomass is rich in functional groups that can bind various ions, including microelements. Biomass enriched in this way can be a carrier of important nutrients for plants and animals. The paper aims to verify the possibility of using plant biomass—post-extraction residues as carriers of microelements for fertilization and nutritional purposes. A literature analysis was carried out concerning the application of biosorption for biomass valorization; in particular, the degree of biomass enrichment and the bioavailability of microelement preparations obtained were examined. Valorization of post-extraction residues is a part of the circular economy concept; it minimizes waste generation and enables the recovery of materials for other purposes. This application of biosorption is a new trend that has the potential to be used in the production of new fertilizers and supplements for precision agriculture.
Dawid Skrzypczak; Bartosz Ligas; Katarzyna Mikula; Anna Witek-Krowiak; Mateusz Samoraj; Konstantinos Moustakas; Katarzyna Chojnacka. Valorization of post-extraction biomass residues as carriers of bioavailable micronutrients for plants and livestock. Biomass Conversion and Biorefinery 2020, 1 -16.
AMA StyleDawid Skrzypczak, Bartosz Ligas, Katarzyna Mikula, Anna Witek-Krowiak, Mateusz Samoraj, Konstantinos Moustakas, Katarzyna Chojnacka. Valorization of post-extraction biomass residues as carriers of bioavailable micronutrients for plants and livestock. Biomass Conversion and Biorefinery. 2020; ():1-16.
Chicago/Turabian StyleDawid Skrzypczak; Bartosz Ligas; Katarzyna Mikula; Anna Witek-Krowiak; Mateusz Samoraj; Konstantinos Moustakas; Katarzyna Chojnacka. 2020. "Valorization of post-extraction biomass residues as carriers of bioavailable micronutrients for plants and livestock." Biomass Conversion and Biorefinery , no. : 1-16.
Goldenrod biomass and alfalfa post-extraction residues were valorized and used as a source of energy. The spent alfalfa and goldenrod biomass from the cosmetics industry were extracted with supercritical carbon dioxide and pelletized on the industrial compactor to enable the examination of their useful properties. This was accompanied by the determination of the total humidity, carbon, and hydrogen content, the heat of combustion, calorific value, differential scanning calorimetry (DSC), thermogravimetric analysis (TG) and differential thermogravimetric analysis (DTG). The results were compared with the literature data. It has been shown that alfalfa pellets yielded a slightly higher combustion heat (19.56 MJ/kg) than goldenrod pellets 17.59 MJ/kg. Pellets obtained from alfalfa and goldenrod showed a slightly lower calorific value, respectively 18.17 MJ/kg and 16.35 MJ/kg than the pellets available on the market. This is mainly due to the lower carbon and hydrogen content. Still, the inference is that such biomass after the supercritical extraction, although not as rich in hydrophobic compounds (calorific fats), can be successfully used as a source of renewable energy.
Grzegorz Izydorczyk; Dawid Skrzypczak; Daria Kocek; Małgorzata Mironiuk; Anna Witek-Krowiak; Konstantinos Moustakas; Katarzyna Chojnacka. Valorization of bio-based post-extraction residues of goldenrod and alfalfa as energy pellets. Energy 2020, 194, 116898 .
AMA StyleGrzegorz Izydorczyk, Dawid Skrzypczak, Daria Kocek, Małgorzata Mironiuk, Anna Witek-Krowiak, Konstantinos Moustakas, Katarzyna Chojnacka. Valorization of bio-based post-extraction residues of goldenrod and alfalfa as energy pellets. Energy. 2020; 194 ():116898.
Chicago/Turabian StyleGrzegorz Izydorczyk; Dawid Skrzypczak; Daria Kocek; Małgorzata Mironiuk; Anna Witek-Krowiak; Konstantinos Moustakas; Katarzyna Chojnacka. 2020. "Valorization of bio-based post-extraction residues of goldenrod and alfalfa as energy pellets." Energy 194, no. : 116898.
The rapid growth of the global population and the resulting need to ensure sufficient food safety in highly productive agricultural practices. Intensive cultivation of plants contributes to the impoverishment of soils and thus forces farmers to apply intensive fertilization with microelements. Precise fertilization techniques are the future of agriculture, in which nutrients are supplied in controlled way with minimized losses to the environment, caused by leaching to groundwater. Kinetics of nutrients release should be thus adjusted to plant requirements and kinetics of uptake by the plant. The paper presents current achievements in the field of fertilizers with controlled release of microelements, which, apart from the main fertilizer components, are also very significant for proper plant growth. Fertilizers are divided into four basic groups, which include low-solubility fertilizers, fertilizers with external coating, bio-based and nano-fertilizers. Despite structural differences, all groups show properties of controlled microelement release. The paper presents new fertilization technologies with consideration of their influence on the environment.
Katarzyna Mikula; Grzegorz Izydorczyk; Dawid Skrzypczak; Małgorzata Mironiuk; Konstantinos Moustakas; Anna Witek-Krowiak; Katarzyna Chojnacka. Controlled release micronutrient fertilizers for precision agriculture – A review. Science of The Total Environment 2019, 712, 136365 .
AMA StyleKatarzyna Mikula, Grzegorz Izydorczyk, Dawid Skrzypczak, Małgorzata Mironiuk, Konstantinos Moustakas, Anna Witek-Krowiak, Katarzyna Chojnacka. Controlled release micronutrient fertilizers for precision agriculture – A review. Science of The Total Environment. 2019; 712 ():136365.
Chicago/Turabian StyleKatarzyna Mikula; Grzegorz Izydorczyk; Dawid Skrzypczak; Małgorzata Mironiuk; Konstantinos Moustakas; Anna Witek-Krowiak; Katarzyna Chojnacka. 2019. "Controlled release micronutrient fertilizers for precision agriculture – A review." Science of The Total Environment 712, no. : 136365.