The Experts below are selected from a list of 324 Experts worldwide ranked by ideXlab platform
Petr Stehlík - One of the best experts on this subject based on the ideXlab platform.
-
Thermal processing of sewage Sludge - II
Applied Thermal Engineering, 2008Co-Authors: Lucie Houdková, Jaroslav Boran, Vladimír Ucekaj, Thomas Elsäßer, Petr StehlíkAbstract:This paper is focused on heat and economic aspects of selected Sludge management options. Sewage Sludge produced by waste water cleaning process is biodegradable material with growing production. This paper compares three alternative technologies of Sludge management where Sludge is used to produce energy. Alternative 1 considers anaerobic digestion of mixed Raw Sludge with subsequent cogeneration of obtained biogas. Alternative 2 covers incineration of mixed Raw Sludge utilizing energy contained in flue gases. Alternative 3 represents a combination of the above two alternatives - incineration of digested Sludge utilizing energy contained in biogas and flue gas. Heat and economic balances were performed on the basis of the pilot tests of Sludge dewatering at a big waste water treatment plant with the aim to use credible data for all the analyses. Therefore results provide information of practical value. © 2008 Elsevier Ltd. All rights reserved.
-
Thermal processing of sewage Sludge – II
Applied Thermal Engineering, 2006Co-Authors: Lucie Houdková, Vladimír Ucekaj, Thomas Elsäßer, Jaroslav Boráň, Petr StehlíkAbstract:Abstract This paper is focused on heat and economic aspects of selected Sludge management options. Sewage Sludge produced by waste water cleaning process is biodegradable material with growing production. This paper compares three alternative technologies of Sludge management where Sludge is used to produce energy. Alternative 1 considers anaerobic digestion of mixed Raw Sludge with subsequent cogeneration of obtained biogas. Alternative 2 covers incineration of mixed Raw Sludge utilizing energy contained in flue gases. Alternative 3 represents a combination of the above two alternatives – incineration of digested Sludge utilizing energy contained in biogas and flue gas. Heat and economic balances were performed on the basis of the pilot tests of Sludge dewatering at a big waste water treatment plant with the aim to use credible data for all the analyses. Therefore results provide information of practical value.
Lucie Houdková - One of the best experts on this subject based on the ideXlab platform.
-
Thermal processing of sewage Sludge - II
Applied Thermal Engineering, 2008Co-Authors: Lucie Houdková, Jaroslav Boran, Vladimír Ucekaj, Thomas Elsäßer, Petr StehlíkAbstract:This paper is focused on heat and economic aspects of selected Sludge management options. Sewage Sludge produced by waste water cleaning process is biodegradable material with growing production. This paper compares three alternative technologies of Sludge management where Sludge is used to produce energy. Alternative 1 considers anaerobic digestion of mixed Raw Sludge with subsequent cogeneration of obtained biogas. Alternative 2 covers incineration of mixed Raw Sludge utilizing energy contained in flue gases. Alternative 3 represents a combination of the above two alternatives - incineration of digested Sludge utilizing energy contained in biogas and flue gas. Heat and economic balances were performed on the basis of the pilot tests of Sludge dewatering at a big waste water treatment plant with the aim to use credible data for all the analyses. Therefore results provide information of practical value. © 2008 Elsevier Ltd. All rights reserved.
-
Thermal processing of sewage Sludge – II
Applied Thermal Engineering, 2006Co-Authors: Lucie Houdková, Vladimír Ucekaj, Thomas Elsäßer, Jaroslav Boráň, Petr StehlíkAbstract:Abstract This paper is focused on heat and economic aspects of selected Sludge management options. Sewage Sludge produced by waste water cleaning process is biodegradable material with growing production. This paper compares three alternative technologies of Sludge management where Sludge is used to produce energy. Alternative 1 considers anaerobic digestion of mixed Raw Sludge with subsequent cogeneration of obtained biogas. Alternative 2 covers incineration of mixed Raw Sludge utilizing energy contained in flue gases. Alternative 3 represents a combination of the above two alternatives – incineration of digested Sludge utilizing energy contained in biogas and flue gas. Heat and economic balances were performed on the basis of the pilot tests of Sludge dewatering at a big waste water treatment plant with the aim to use credible data for all the analyses. Therefore results provide information of practical value.
Antoni Sánchez - One of the best experts on this subject based on the ideXlab platform.
-
Gaseous emissions during the solid state fermentation of different wastes for enzyme production at pilot scale
Bioresource Technology, 2014Co-Authors: Caterina Maulini-duran, Adriana Artola, Juliana Abraham, Sheila Rodríguez-pérez, Alejandra Cerda, Pedro Jiménez-peñalver, Raquel Barrena, Xavier Font, Antoni SánchezAbstract:Abstract The emissions of volatile organic compounds (VOC), CH4, N2O and NH3 during the solid state fermentation process of some selected wastes to obtain different enzymes have been determined at pilot scale. Orange peel + compost (OP), hair wastes + Raw Sludge (HW) and winterization residue + Raw Sludge (WR) have been processed in duplicate in 50 L reactors to provide emission factors and to identify the different VOC families present in exhaust gaseous emissions. Ammonia emission from HW fermentation (3.2 ± 0.5 kg Mg−1 dry matter) and VOC emission during OP processes (18 ± 6 kg Mg−1 dry matter) should be considered in an industrial application of these processes. Terpenes have been the most emitted VOC family during all the processes although the emission of sulphide molecules during HW SSF is notable. The most emitted compound was dimethyl disulfide in HW and WR processes, and limonene in the SSF of OP.
-
a systematic study of the gaseous emissions from biosolids composting Raw Sludge versus anaerobically digested Sludge
Bioresource Technology, 2013Co-Authors: Caterina Mauliniduran, Adriana Artola, Xavier Font, Antoni SánchezAbstract:Abstract Volatile organic compound (VOC) and ammonia, that contribute to odor pollution, and methane and nitrous oxide, with an important greenhouse effect, are compounds present in gaseous emission from waste treatment installations, including composting plants. In this work, gaseous emissions from the composting of Raw (RS) and anaerobically digested Sludge (ADS) have been investigated and compared at pilot scale aiming to provide emission factors and to identify the different VOC families present. CH4 and N2O emissions were higher in ADS composting (0.73 and 0.55 kg Mg−1 Sludge, respectively) than in RS composting (0.01 kg Mg−1 Sludge for both CH4 and N2O). NH3 and VOCs emitted were higher during the RS composting process (19.37 and 0.21 kg Mg−1 Sludge, respectively) than in ADS composting (0.16 and 0.04 kg Mg−1 Sludge). Significant differences were found in the VOC compositions emitted in ADS and RS composting, being more diverse in RS than ADS composting.
-
Influence of different co-substrates biochemical composition on Raw Sludge co-composting
Biodegradation, 2008Co-Authors: Luz Ruggieri, Adriana Artola, Antoni SánchezAbstract:The influence of biochemical composition of different co-substrates added to Raw Sludge during co-composting process was studied. The physical properties of the composting mass and their influence on the biological activity were also investigated. Three treatments composed of mixtures of Raw Sludge and co-substrate (commercial fats, protein, and cellulose) were carried out and compared to a control composed of Raw Sludge. Mixture conditioning was performed on the basis on air filled porosity (40%). The results obtained in the co-composting processes reflected a higher biological activity and higher degradation percentages of dry and organic matter when compared with control. Higher temperatures (60, 67 and 62°C for fats, protein and cellulose, respectively) were also achieved in all co-composting experiments as compared to the control test (55°C). Biological activity was measured using both Static and Dynamic Respiration Indices obtaining higher values in co-composting experiments compared to the control test. Fats content reduction was higher (66%) at higher fats content in the initial mixture (10.6%). The addition of fats seems also to promote the degradation of cellulose and lignin. Co-composting experiments with fats and cellulose presented higher initial C/N ratio and lower nitrogen losses, 27.5 and 34.2% compared to 40% for Raw Sludge. It has been demonstrated that the addition of an adequate co-substrate to Raw Sludge leads to a higher degradation percentages of the different biochemical fractions and higher nitrogen conservation.
Karl M. Smith - One of the best experts on this subject based on the ideXlab platform.
-
Application of Sludge-based carbonaceous materials in a hybrid water treatment process based on adsorption and catalytic wet air oxidation
Journal of Environmental Management, 2010Co-Authors: Carine Julcour-lebigue, Caroline Andriantsiferana, Catherine Ayral, Elham Mohamed, Laurent Le Coq, Henri Delmas, Anne Marie Wilhelm, Claire Gérente, Karl M. SmithAbstract:This paper describes a preliminary evaluation of the performance of carbonaceous materials prepared from sewage Sludges (SBCMs) in a hybrid water treatment process based on adsorption and catalytic wet air oxidation; phenol was used as the model pollutant. Three different sewage Sludges were treated by either carbonisation or steam activation, and the physico-chemical properties of the resultant carbonaceous materials (e.g. hardness, BET surface area, ash and elemental content, surface chemistry) were evaluated and compared with a commercial reference activated carbon (PICA F22). The adsorption capacity for phenol of the SBCMs was greater than suggested by their BET surface area, but less than F22; a steam activated, dewatered Raw Sludge (SA_DRaw) had the greatest adsorption capacity of the SBCMs in the investigated range of concentrations (
Thomas Elsäßer - One of the best experts on this subject based on the ideXlab platform.
-
Thermal processing of sewage Sludge - II
Applied Thermal Engineering, 2008Co-Authors: Lucie Houdková, Jaroslav Boran, Vladimír Ucekaj, Thomas Elsäßer, Petr StehlíkAbstract:This paper is focused on heat and economic aspects of selected Sludge management options. Sewage Sludge produced by waste water cleaning process is biodegradable material with growing production. This paper compares three alternative technologies of Sludge management where Sludge is used to produce energy. Alternative 1 considers anaerobic digestion of mixed Raw Sludge with subsequent cogeneration of obtained biogas. Alternative 2 covers incineration of mixed Raw Sludge utilizing energy contained in flue gases. Alternative 3 represents a combination of the above two alternatives - incineration of digested Sludge utilizing energy contained in biogas and flue gas. Heat and economic balances were performed on the basis of the pilot tests of Sludge dewatering at a big waste water treatment plant with the aim to use credible data for all the analyses. Therefore results provide information of practical value. © 2008 Elsevier Ltd. All rights reserved.
-
Thermal processing of sewage Sludge – II
Applied Thermal Engineering, 2006Co-Authors: Lucie Houdková, Vladimír Ucekaj, Thomas Elsäßer, Jaroslav Boráň, Petr StehlíkAbstract:Abstract This paper is focused on heat and economic aspects of selected Sludge management options. Sewage Sludge produced by waste water cleaning process is biodegradable material with growing production. This paper compares three alternative technologies of Sludge management where Sludge is used to produce energy. Alternative 1 considers anaerobic digestion of mixed Raw Sludge with subsequent cogeneration of obtained biogas. Alternative 2 covers incineration of mixed Raw Sludge utilizing energy contained in flue gases. Alternative 3 represents a combination of the above two alternatives – incineration of digested Sludge utilizing energy contained in biogas and flue gas. Heat and economic balances were performed on the basis of the pilot tests of Sludge dewatering at a big waste water treatment plant with the aim to use credible data for all the analyses. Therefore results provide information of practical value.
