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Articles 1 - 30 of 132
Full-Text Articles in Chemical Engineering
Call For Abstracts - Resrb 2019, July 8-9, Wrocław, Poland, Wojciech M. Budzianowski
Call For Abstracts - Resrb 2019, July 8-9, Wrocław, Poland, Wojciech M. Budzianowski
Wojciech Budzianowski
No abstract provided.
C.V. - Wojciech Budzianowski, Wojciech M. Budzianowski
Renewable Energy And Sustainable Development (Resd) Group, Wojciech M. Budzianowski
Renewable Energy And Sustainable Development (Resd) Group, Wojciech M. Budzianowski
Wojciech Budzianowski
No abstract provided.
Procesy Cieplne I Aparaty (Lab), Wojciech M. Budzianowski
Inżynieria Chemiczna Lab., Wojciech M. Budzianowski
Performance Evaluation Of Natural Iron-Rich Sandy Soil As A Low-Cost Adsorbent For Removal Of Lead From Water, Yee Sern Ng, Bhaskar Sen Gupta, Mohd Ali Hashim
Performance Evaluation Of Natural Iron-Rich Sandy Soil As A Low-Cost Adsorbent For Removal Of Lead From Water, Yee Sern Ng, Bhaskar Sen Gupta, Mohd Ali Hashim
Ng Yee-Sern
Technical feasibility of natural iron-rich sandy soil as a low-cost adsorbent for removal of lead from water was investigated . The soil, which had an iron content of 3,719 mg/kg, was collected from Hulu Langat, Malaysia, and was used for adsorption studies without any surface modification through chemical treatment. The effects of pH, solution: soil ratio and initial lead concentration on the adsorption efficiency were studied using response surface methodology based on Box–Behnken experimental design. The results showed that pH of the solution had the highest impact on the adsorption efficiency whereby adsorption efficiency of 97% could be achieved at …
Inżynieria Chemiczna Ćw., Wojciech M. Budzianowski
Tematyka Prac Doktorskich, Wojciech M. Budzianowski
Tematyka Prac Doktorskich, Wojciech M. Budzianowski
Wojciech Budzianowski
No abstract provided.
Zespół Energii Odnawialnej I Zrównoważonego Rozwoju (Eozr), Wojciech M. Budzianowski
Zespół Energii Odnawialnej I Zrównoważonego Rozwoju (Eozr), Wojciech M. Budzianowski
Wojciech Budzianowski
No abstract provided.
Potential Of Metal Recovery From Coal Combustion Products. Part I. Physicochemical Characterization, Dariusz Bradlo, Witold Zukowski, Piotr Czuprynski, Konrad Jura
Potential Of Metal Recovery From Coal Combustion Products. Part I. Physicochemical Characterization, Dariusz Bradlo, Witold Zukowski, Piotr Czuprynski, Konrad Jura
Witold Zukowski
The paper presents physicochemical characteristic of coal combustion products: fly ashes from three stages of electrostatic dust collecting system (FAI, FAII, FAIII), slag (S) and slurry from wet flue gas desulphurization (S-wFGD). Fly ashes are classifi ed as ‘siliceous’ or ‘sialic-high acid’. Th e concentrations of selected heavy metals indicate that their values increase in accordance with consecutive stages of dust collecting system. Fly ash FAIII and slurry from wet FGD have the largest heavy metals content. The results show the increment of lanthanides and ittrium (REY) contents in CCPs from slag, through FAII and FAI to S-wFGD and FAIII.
Potential Of Metal Recovery From Coal Combustion Products. Part Ii. Leaching Of Selected Elements, Dariusz Bradlo, Witold Zukowski, Piotr Czuprynski, Karol Witkowski
Potential Of Metal Recovery From Coal Combustion Products. Part Ii. Leaching Of Selected Elements, Dariusz Bradlo, Witold Zukowski, Piotr Czuprynski, Karol Witkowski
Witold Zukowski
The paper presents leaching results of coal combustion products: fly ashes from the three stages of dust collecting system, slag and slurry from wet fl ue gas desulphurization. The static leaching method was used at room temperature, at a pH value of 1, 4, 7, 10 and 13 for 10 days. H2SO4 and NaOH were added as extraction media and L/S ratio was set to the value of 10. The highest recovery ratio was attained during leaching at a pH value of 1 for fly ash from the third stage of dust collecting system and slurry.
Solar And Visible Light Driven Photocatalysis For Sacrificial Hydrogen Generation And Water Detoxification With Chemically Modified Ti02, Pankaj Chowdhury
Solar And Visible Light Driven Photocatalysis For Sacrificial Hydrogen Generation And Water Detoxification With Chemically Modified Ti02, Pankaj Chowdhury
PC
Photocatalysis is a recognized approach where light energy is employed to excite the semiconductor material producing electron/hole pair which eventually involves in the detoxification of pollutants and/or water splitting producing hydrogen. Existing photocatalysts suffer from poor activity or no activity in visible light irradiation which restricts them from solar light utilization. This work is focused on two key applications of photocatalysis (i) sacrificial hydrogen generation, and (ii) phenol degradation in visible and/or solar light. Platinum was loaded on TiO2 photocatalyst by solar photo-deposition method. Eosin Y dye was used as a sensitizer for sensitization of platinum loaded TiO2 photocatalyst. The …
Treatment Of Combined Sewer Overflows Using Ferrate (Vi), Rohan Gandhi
Treatment Of Combined Sewer Overflows Using Ferrate (Vi), Rohan Gandhi
Rohan Gandhi
Prevention of pollution from combined sewer overflows (CSOs) is currently a major concern due to their impact on aquatic and human environment. With the stringent regulations related to the CSOs treatment, it is necessary to develop an efficient, fast and low cost treatment technique that meets the applicable criteria. In this work, the comprehensive study was done to determine the efficiency of ferrate (VI) for the treatment of CSOs. At a Fe (VI) dose of 0.24 mg/l, TCOD, SCOD, TBOD5, SBOD5, TSS, VSS, TP, TN and soluble TN removal efficiencies of 71%, 75%, 69%, 68%, 72%, 83%, 64%, 38% and …
Effects Of Wetting Agents And Approaching Anode On Lead Migration In Electrokinetic Soil Remediation, Yee Sern Ng, Bhaskar Sen Gupta, Mohd Ali Hashim
Effects Of Wetting Agents And Approaching Anode On Lead Migration In Electrokinetic Soil Remediation, Yee Sern Ng, Bhaskar Sen Gupta, Mohd Ali Hashim
Ng Yee-Sern
Approaching anode is one of the enhancement techniques in electrokinetic soil remediation. This technique is reported to give promising migration for heavy metals under shorter treatment time and at lower cost in comparison to normal fixed anode system. In the present study, the effectiveness of fixed anode and approaching anode techniques in electrokinetic soil remediation for lead migration under different types of wetting agents (0.01M NaNO3 and 0.1M citric acid) was investigated. The study showed that the use of citric acid enhanced lead migration in comparison to NaNO3. For NaNO3 tests, lead was found to accumulate in the middle of …
Performance Evaluation Of Two-Stage Electrokinetic Washing As Soil Remediation Method For Lead Removal Using Different Wash Solutions, Yee Sern Ng, Bhaskar Sen Gupta, Mohd Ali Hashim
Performance Evaluation Of Two-Stage Electrokinetic Washing As Soil Remediation Method For Lead Removal Using Different Wash Solutions, Yee Sern Ng, Bhaskar Sen Gupta, Mohd Ali Hashim
Ng Yee-Sern
The study explores the application of a two-stage electrokinetic washing system on remediation of lead (Pb) contaminated soil. The process involved an initial soil washing, followed by an electrokinetic process. The use of electrokinetic process in soil washing not only provided additional driving force for transporting the desorbed Pb away from the soil but also reduced the high usage of wash solution. In this study, the effect of NaNO3, HNO3, citric acid and EDTA as wash solutions on two-stage electrokinetic washing system were evaluated. The results revealed that a two-stage electrokinetic washing process enhanced Pb removal efficiency by 2.52-9.08% and …
Termodynamika Procesowa I Techniczna Lab., Wojciech M. Budzianowski
Termodynamika Procesowa I Techniczna Lab., Wojciech M. Budzianowski
Wojciech Budzianowski
No abstract provided.
Tematyka Prac Dyplomowych Dla Studentów Wydziału Mechaniczno-Energetycznego Pwr., Wojciech M. Budzianowski
Tematyka Prac Dyplomowych Dla Studentów Wydziału Mechaniczno-Energetycznego Pwr., Wojciech M. Budzianowski
Wojciech Budzianowski
No abstract provided.
Tematyka Prac Dyplomowych Dla Studentów Wydziału Chemicznego Pwr., Wojciech M. Budzianowski
Tematyka Prac Dyplomowych Dla Studentów Wydziału Chemicznego Pwr., Wojciech M. Budzianowski
Wojciech Budzianowski
No abstract provided.
Mechanika Płynów Lab., Wojciech M. Budzianowski
Mechanika Płynów Lab., Wojciech M. Budzianowski
Wojciech Budzianowski
No abstract provided.
Solar And Visible Light Driven Photocatalysis For Sacrificial Hydrogen Generation And Water Detoxification With Chemically Modified Ti02, Pankaj Chowdhury
Solar And Visible Light Driven Photocatalysis For Sacrificial Hydrogen Generation And Water Detoxification With Chemically Modified Ti02, Pankaj Chowdhury
P
Photocatalysis is a recognized approach where light energy is employed to excite the semiconductor material producing electron/hole pair which eventually involves in the detoxification of pollutants and/or water splitting producing hydrogen. Existing photocatalysts suffer from poor activity or no activity in visible light irradiation which restricts them from solar light utilization. This work is focused on two key applications of photocatalysis (i) sacrificial hydrogen generation, and (ii) phenol degradation in visible and/or solar light. Platinum was loaded on TiO2 photocatalyst by solar photo-deposition method. Eosin Y dye was used as a sensitizer for sensitization of platinum loaded TiO2 photocatalyst. The …
Biodiesel Production From Waste Trying Oils Over Lime Catalysts, João F. Gomes
Biodiesel Production From Waste Trying Oils Over Lime Catalysts, João F. Gomes
João F Gomes
No abstract provided.
Mechaniczny Rozdział Faz Proj., Wojciech M. Budzianowski
Mechaniczny Rozdział Faz Proj., Wojciech M. Budzianowski
Wojciech Budzianowski
No abstract provided.
Challenges And Prospects Of Processes Utilising Carbonic Anhydrase For Co2 Separation, Patrycja Szeligiewicz, Wojciech M. Budzianowski
Challenges And Prospects Of Processes Utilising Carbonic Anhydrase For Co2 Separation, Patrycja Szeligiewicz, Wojciech M. Budzianowski
Wojciech Budzianowski
This article provides an analysis of processes for separation CO2 by using carbonic anhydrase enzyme with particular emphasis on reactive-membrane solutions. Three available processes are characterised. Main challenges and prospects are given. It is found that in view of numerous challenges practical applications of these processes will be difficult in near future. Further research is therefore needed for improving existing processes through finding methods for eliminating their main drawbacks such as short lifetime of carbonic anhydrase or low resistance of reactive membrane systems to impurities contained in flue gases from power plants.
Sacrificial Hydrogen Generation From Formaldehyde With Pt/Tio2 Photocatalyst In Solar Radiation, Pankaj Chowdhury, Ghodsieh Malekshoar, Madhumita Ray, Jesse Zhu, Ajay Ray
Sacrificial Hydrogen Generation From Formaldehyde With Pt/Tio2 Photocatalyst In Solar Radiation, Pankaj Chowdhury, Ghodsieh Malekshoar, Madhumita Ray, Jesse Zhu, Ajay Ray
P
In this work, solar TiO2 photocatalysis was used for sacrificial hydrogen generation from formaldehyde. Platinum was loaded onto a TiO2 photocatalyst by a solar photodeposition method to suppress the electron/hole recombination process. The photocatalyst inside the reactor was irradiated from the top with a solar simulator. Photocatalytic hydrogen generation from formaldehyde was influenced by the solution pH, platinum loading (wt %) on TiO2, catalyst concentration, light intensity, and initial formaldehyde concentration. A Langmuir-type model fitted well with the experimental data, and the values of surface reaction rate constant, k, and the adsorption equilibrium constant, K, are 2.3598 × 10–6 mol …
Determination Of Kinetic Parameters From The Thermogravimetric Data Set Of Biomass Samples, Karol Postawa, Wojciech M. Budzianowski
Determination Of Kinetic Parameters From The Thermogravimetric Data Set Of Biomass Samples, Karol Postawa, Wojciech M. Budzianowski
Wojciech Budzianowski
This article describes methods of the determination of kinetic parameters from the thermogravimetric data set of biomass samples. It presents the methodology of the research, description of the needed equipment, and the method of analysis of thermogravimetric data. It describes both methodology of obtaining quantitative data such as kinetic parameters as well as of obtaining qualitative data like the composition of biomass. The study is focused mainly on plant biomass because it is easy in harvesting and preparation. Methodology is shown on the sample containing corn stover which is subsequently pyrolysed. The investigated sample show the kinetic of first order …
Applications Of Activated Carbons Obtained From Lignocellulosic Materials For The Wastewater Treatment, Ma. Del Rosario Moreno-Virgen, Rigoberto Tovar-Gomez, Didilia I. Mendoza-Castillo, Adrian Bonilla-Petriciolet
Applications Of Activated Carbons Obtained From Lignocellulosic Materials For The Wastewater Treatment, Ma. Del Rosario Moreno-Virgen, Rigoberto Tovar-Gomez, Didilia I. Mendoza-Castillo, Adrian Bonilla-Petriciolet
Adrian Bonilla-Petriciolet
This chapter provides an overview of the application of activated carbons obtained from lignocellulosic precursors for wastewater treatment. Analysis and discussion are focused on the performance of different activated carbons obtained from several precursors and their advantages and capabilities for the removal of relevant toxic compounds and pollutants from water.
Lignocellulosic Precursors Used In The Synthesis Of Activated Carbon: Characterization Techniques And Applications In The Wastewater Treatment, Virginia Hernández-Montoya, Adrian Bonilla-Petriciolet
Lignocellulosic Precursors Used In The Synthesis Of Activated Carbon: Characterization Techniques And Applications In The Wastewater Treatment, Virginia Hernández-Montoya, Adrian Bonilla-Petriciolet
Adrian Bonilla-Petriciolet
The activated carbon is the universal adsorbent used in the removal of water pollutants such as dyes, heavy metals, fluoride and arsenic, among others. The commercial activated carbons are generally obtained from wood and coconut shell. However, in recent years, other lignocellulosic materials have been used as precursors in the synthesis of this adsorbent for specific applications. This book discusses and analyzes key aspects concerning to the preparation, characterization and application of activated carbons obtained from different lignocellulosic materials. Based on the fact that the activated carbon is used in a broad variety of treatment systems, this book will be …
Monitoring Exposure To Airborne Ultrafine Particles In Lisbon, Portugal, João F. Gomes
Monitoring Exposure To Airborne Ultrafine Particles In Lisbon, Portugal, João F. Gomes
João F Gomes
No abstract provided.
Comparison Of Deposited Surface Area Of Airborne Ultrafine Particles Generated From Two Welding Processes, João F. Gomes
Comparison Of Deposited Surface Area Of Airborne Ultrafine Particles Generated From Two Welding Processes, João F. Gomes
João F Gomes
No abstract provided.
Ogólnotechniczne Podstawy Biotechnologii Z Elementami Grafiki Inżynierskiej Ćw., Wojciech M. Budzianowski
Ogólnotechniczne Podstawy Biotechnologii Z Elementami Grafiki Inżynierskiej Ćw., Wojciech M. Budzianowski
Wojciech Budzianowski
No abstract provided.