Pranas Baltrenas

Pranas Baltrenas
Vilnius Gediminas Technical University | VGTU

About

193
Publications
23,561
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
1,592
Citations
Citations since 2016
68 Research Items
869 Citations
2016201720182019202020212022020406080100120140
2016201720182019202020212022020406080100120140
2016201720182019202020212022020406080100120140
2016201720182019202020212022020406080100120140

Publications

Publications (193)
Article
The present study evaluated short-time effect of steam modified biochar with rhamnolipid solution on the removal of different volatile organic and inorganic compounds (acetone, xylene, ammonia) in biofilter with capillary system. Modification of pine wood biochar with steam governed better treatment of pollar acetone and ammonia compounds from the...
Article
In this study Mn-based multicomponent catalysts supported by two different carriers (lightweight expanded clay aggregate - LECA and the Ukrainian clinoptiolite) were prepared by electroless metal deposition method and tested for the selective catalytic reduction of NO with ammonia (NH3-SCR de-NO). Prior to the activity test all the catalysts prepar...
Article
Full-text available
Reducing the pressure drop in biofilters is important for the reduction of the energy consumption of these devices. Usually, the pressure drop increases with time due to the biomass growth within the packing material. The aim of this study was to evaluate the aerodynamic processes in a laboratory-scale wavy lamellar (WL) plate-type biofilter equipp...
Article
Removal of heavy metals through biosorption using biomass offers several advantages over other conventional techniques such as low cost, high efficiency, environmentally friendly, etc. In the present article, biosorption of Nickel(II) and Lead(II)was investigated using dried biomass of cyanobacterial consortium. OFAT (one-factor-at-a-time) analysis...
Article
Full-text available
Environmental issues near roads become more and more important in our society daily life. One of the most critical environmental issues is traffic noise. The present paper study louvred noise barrier designed by authors. The louvred noise barrier provides sound attenuation while allowing airflow and sunlight through it. Since the airflow resistance...
Article
Full-text available
Research into gas flow motion as a transported phase and pollutant – particulate matter (PM) is of crucial importance, their changes in particular areas of the object require knowledge of improving the apparatus. A cyclone is considered one of the most popular devices due to the new modified multi-channel design that involves combined separation an...
Article
Full-text available
In this study, different types of magnetic biochar nanocomposites were synthesized using the co-precipitation method. Two biochar materials, namely, sewage sludge biochar and woodchips biochar, were prepared at two different temperatures, viz., 450 and 700 °C. These biochars were further modified with magnetic nanoparticles (Fe3O4). The modified bi...
Article
Full-text available
In the present study, we aimed to determine the changes of indoor radon concentrations depending on various environmental parameters, such as the outdoor temperature, relative humidity, and air pressure, in university building premises of different applications and heights. The environmental parameters and indoor radon concentrations in four differ...
Chapter
In this chapter the third level of sustainability of environmental protection technologies is presented with the example of biological treatment of air. The major principles and applications of the method of biological air treatment, the loadings used, their characteristics and influence on air cleaning effectiveness, as well as the analysis of bio...
Chapter
This chapter continues the description of the third sustainability level and features of environmental protection technologies with the example of biofiltration systems. Attention is given to the natural materials used in biofiltration systems to better sustain the technological performance. The analytical equipment used in the study of physical pr...
Chapter
The development of sustainable technologies from the laboratory to the pilot scale and the modelling in the case of biofiltration systems is presented in this chapter. A description of aerodynamic, physical and sorptive characteristics of the loads, their efficiency and microbiological characteristics in biological air treatment systems is given. T...
Chapter
This chapter continues a discussion on the second sustainability level of environmental protection technologies and focuses on the use of natural materials for removing pollutants (for example, potentially toxic elements) from the aqueous media. This chapter describes PTEs found in waters and the use of biochar as a sustainable material for removin...
Chapter
This chapter presents the effect of natural (favoured by natural microorganisms) and engineered (governed by introduced microorganisms) phenomena on sustainability of biofiltration system constructed using natural materials for microorganism substrate. The results obtained in studying activities of microorganisms to produce cellulose and xylanase n...
Chapter
The equipment used for the analysis of the aerodynamic characteristics of biological air treatment systems (e.g. air flow velocity and aerodynamic resistance) as well as the results of experimental research of biofiltration systems with natural materials and nature-based phenomena are described in this chapter. By considering the cases of biofiltra...
Chapter
The use of sustainable natural materials in environmental engineering systems is presented as the second sustainability level of environmental protection technologies. This chapter focuses on employing such materials in the stabilization of soil pollution and waste management, explores biochar produced from various kinds of waste materials containi...
Chapter
The chapter discusses the major trends in technogenesis that caused the contamination footprint in the twenty-first century, defines the concept of the contamination footprint and the methods for evaluating it as well as formulates the concept and role of biogeochemical and engineered barriers forming a part of sustainable natural and engineering e...
Chapter
The chapter provides the classification of barriers. The position of natural and artificial biogeochemical barriers in this classification is defined as an example of the first-level sustainability of environmental protection technologies. The role of the barriers is shown considering the bio-accumulating properties of the ligneous and phytoremedia...
Article
The efficiency of a semi-continuous three-stage bioreactor and application possibilities of a chicken manure substrate with birch wood biochar additive (10% by a dry mass) were investigated in this work to evaluate a possible increase in biogas yield, CH4 concentration and to reduce CO2 and H2S concentrations. A biogas purification filter-adsorber...
Article
Full-text available
Based on the 2019 report of the European Environment Agency on Air Quality in Europe nitrogen oxides (NOx) were identified as the most harmful air pollutants in terms of damage to ecosystems. Moreover, in Europe, NO2 is pinpointed as one of the most dangerous pollutants for human health. Anthropogenic emissions of NOx are mainly generated by the co...
Article
The present work is dedicated to the investigation of NOx removal from flue gases, in particular to NOx catalytic reduction by CO using monolith corrugated cylindrical Cu-Cr-based catalysts prepared by plasma spray coating technique. X-ray photoelectron spectroscopy was conducted to provide comprehensive information about oxidation states and chemi...
Book
This book discusses the need for the development of sustainable environmental protection technologies to reduce the impact of environmental contaminants. Three levels of sustainable technologies are addressed. The first level involves the concept of sustainable technologies as natural technologies, or ecotechnologies, whereby contamination level is...
Article
Availability of clean water and sustainable management of water are among the 17 global ‘Sustainable Development Goals,’ established by United Nations. The increasing technogenesis-related pollution causes increases the concentrations of many metallic elements (MEs) throughout the biosphere. The syngenetic bio-incorporation of MEs changes the bioma...
Article
Full-text available
Environmental, biological, and ecosystem-specific properties may influence the transfer of chemical elements (CEs) from soils to plants, including the variation in the chemical elements’ concentration, their types, and physiological parameters, such as biotransformation ability in the plants. The interface between the soil and a plant, or the conce...
Article
This work was aimed at investigating biogas production from chicken manure (common agricultural organic waste) using different organic loadings and a special zeolite additive (ZeoVit sorbent), by applying a small-sized batch-type bioreactor operating under mesophilic conditions (35 °C) with mechanical mixing of the substrate. The effect of the zeol...
Article
A significant proportion of pollutants arise from the heat production equipment in private households. The processes of combustion and product treatment (drying, adding chemical compounds) generate aggressive gas flows containing solid particles (SPs). Common methods employ high-efficiency gas purification to remove SPs, the most popular include el...
Article
The research aims to evaluate the output of biogas and the concentration of CH4 and gaseous impurities such as CO2 and H2S in the process of digesting chicken manure without additives (experiment A) and with 10% of biochar additive (by mass of the dry load) (experiment B) under anaerobic and mesophilic conditions. It has been found that the average...
Article
Full-text available
Key message Element profile signatures of needle tissues differentiated four tissues: epidermis (main contributor: calcium), endodermis (main contributors: magnesium, sulphur and manganese), mesophyll (main contributor: potassium), and transfusion parenchyma (main contributor: zinc). Abstract Distribution of elements in cross-sections of Scots pin...
Article
Full-text available
In the original publication, the numbers 289 and 290 were added in Table 1 footnote. The table footnote should read “Flow-rates are shown as the mean value (n = 5) ± standard deviation. USWR urban storm-water runoff”.
Article
Full-text available
Biochar as a filtering media has been attracted increasing attention for applications in urban storm-water runoff (USWR) management. Up-flow percolation tests were conducted with pine bark (PB) and biochars from PB (BCPB) for evaluating changes in dissolved organic carbon (DOC) and total dissolved nitrogen (TDN) concentrations varying with pyrolysi...
Book
This volume discusses how small bioreactors can produce useful biogas and compost from biodegradable waste. The authors identify which biodegradable wastes are optimal for small bioreactors, and how these choices can be used to increase bioreactor productivity. Additionally, readers will learn about how the amount and composition of biogas is estim...
Chapter
This chapter presents the analysis of biodegradable waste from small farms and food industry enterprises, their specific features and prediction of flows’ formation, as well as the amounts to be processed, the possibilities of their use for gas production, and the formation and variation, processing and the prediction of their variation results.
Chapter
In this chapter the experimental results obtained in determining the quantity and quality of biogas, when one type of degradable waste materials is used, are presented. The studied biodegradable materials included sludge, by-products of margarine production; chicken, pig and cow manure; brewer’s spent grains; and waste products of meat and dairy pr...
Chapter
This chapter presents the results of the experimental study of biogas quantity and quality, based on using the mixtures of biodegradable waste such as by-products of margarine production and chicken manure; by-products of margarine production and sludge; wastes of meat and vegetables; meat waste products and sludge; meat waste products and pig manu...
Chapter
Chapter 4 includes the designing of the small bioreactors, their types and constructions used in the world; however, more attention is provided to the small bioreactors that were designed and constructed by the authors of the book. The design differences between the bioreactors of continuous and periodic type are discussed. The new models of the sm...
Chapter
In this chapter, the parameters for designing the small bioreactors are presented, and the selection and use of the small bioreactors for obtaining biogas for small farms and food industry enterprises is described. Their payback period, the methods of its calculations and cost-benefit analysis, and the assessment of cost and benefits of biodegradab...
Chapter
This chapter presents bioreactors for composting the digestate from biogas-generating bioreactors, their technologies and spread in Europe and in the world, the use of them for small farms and at small food industry enterprises and the evaluation of compost quality. The results of testing the substrates composted with zeolite and ashes from biomass...
Chapter
This chapter includes a description of biogas production characteristics in the small bioreactors, the composition and major properties of biogas, calculations of the predicted amount of biogas and methane generated, description of the typical charge of bioreactors as well as mathematical modelling of biogas generation kinetics.
Chapter
This chapter provides quantitative and qualitative evaluation of biodegradable waste from small farms, food industry enterprises and households in Lithuania that is an example of the EU country with the increasing demand for alternative energy. The potential of the small bioreactors’ use in case of Lithuania and the evaluation of economic, social a...
Article
The analysis of the two-level multi-channel cyclone operation requires the investigation of the treated air flow movement. The two-level multi-channel cyclone was designed for separating solid particles from the air flow and constructed at the Institute of the Environmental Protection of Vilnius Gediminas Technical University. The study was aimed a...
Article
A multi-channel cyclone is a new-generation cleaning device, which purifies a gas flow by removing fine dispersion solid particles of 2 μm and larger in diameter from it. An aggressive dispersed gas flow can be formed under various conditions, for example, in combustion and processing of various products such as drying of chemical compounds, etc.,...
Article
Full-text available
The intensive industrial development and urbanization, as well as the negligible return of hazardous components to the deeper layers of the Earth, increases the contamination load on the noosphere (i.e., the new status of the biosphere, the development of which is mainly controlled by the conscious activity of a human being). The need for reducing...
Article
Full-text available
Dissolved organic carbon (DOC) interacts with dissolved trace metal affecting their mobility and bioavailability through the formation of DOC–metal complexes. Several types of biochar (BC) produced from slow pyrolysis of wood chips (WC), lignin (LG), and digested sewage sludge at 450 and 700 °C were tested for DOC leaching via batch and up-flow per...
Article
Full-text available
Biogas – ecological fuel, which is assigned to alternative energy sources. It should be noted, that biogas – renewable energy source, which does not require any specific climatic conditions or geographical position of a country. This power source is available and can be successfully produced and used in all countries of the world. The main componen...
Article
Full-text available
Special cyclone – gas treatment device which can be applied to remove the fine particulate matter bigger than 2 micrometres from aggressive gas flow at a temperature of 50–145 °C and a relative humidity of more than 95% and can be achieved the cleaning efficiency over 90%. Cyclone work is based on centrifugal forces and the resulting additional fil...
Conference Paper
Full-text available
The studies examined the gas flow aerodynamic parameters and treatment efficiency from the wood ash particulate matter, also an adhesion dependencies in multi-channel cyclone using aggressive gas flow – temperature up to 75 °C and relative humidity more than 95%. Researches of gas flow velocity and cyclone aerodynamic resistance in case of differen...
Conference Paper
Biogas is a fuel, which can be produced from a renewable energy source – biomass. Such a gas can be freely used in small farms or food industry to produce heat or electricity. Two main components of biogas – metahne CH4 and carbon dioxide CO2. In some case, if biomass has a big amount of proteins, there can be an aggressive to different constructio...
Article
Full-text available
A multi channel cyclone is a new generation air treatment equipment that can remove fine stiff particles of up to 2 microns from air flow and reach the general effectiveness of 95%. The technological processes such as a combustion, products processing (drying, chemical compounds insertion) generate an aggressive conditions into polluted dusty gas f...
Conference Paper
Full-text available
Incinerators produce energy burning virtually everything including waste, but emit pollutants such as heavy metals and carbon monoxide (CO). These substances can be uptaken by trees through their roots, leaves or stems. To evaluate the quantity of heavy metals uptaken, and to validate the methodology, we studied an incinerator and its area of influ...
Article
Full-text available
The articles appearing in this special issue on Biochar as an Option for Sustainable Resource Management are mainly the extended versions of the contributions presented in Biochar COST Action meetings, especially at the International Biochar conference held September 2015 at Geisenheim University (Germany), which was the final conference of the COS...
Chapter
In the phytoremediation modelling stage, which is specific due to unavoidable assumptions and limitations, the complicated nature of natural processes, and different qualifications of model developers result in the variety of phytoremediation-oriented models that differs in complication and the extent of applicability. The variety of phytoremediati...
Conference Paper
The present review aims at investigating the influence of the type of feedstock and the production temperature on the dissolved organic carbon (DOC) content of biochar (BC) from slow pyrolysis. To collect data from the literature, peer reviewed articles in English published in 2007–2016 were considered. The different types of BC were classified dep...
Article
Full-text available
Benzene, toluene, ethylbenzene and xylene (BTEX) form an important group of volatile organic compounds (VOCs) affecting troposphere and posing risk to human health. The article examines the Mažeikiai area in the northern part of Lithuania where one of the largest Central European companies and the only oil refinery in the Baltic region (200,000 bar...
Article
The environmental legislation and strict enforcement of environmental regulations are the tools effectively used for developing the market of materials for environmental protection technologies. Sustainability criteria shift environmental engineering systems to more sustainable-material-based technologies. For carbon-based medium materials in biofi...
Article
Full-text available
Naujos kartos daugiakanaliais ciklonais smulkiadispersės kietosios dalelės pašalinamos iš užterštų dujų. Naudojant šiuos įrenginius, yra atskiriamos ir nusodinamos kietosios dalelės, kurių minimalus skersmuo siekia 2 mikrometrus, taip gaunama iki 95 % valymo efektyvumo. Tokios konstrukcijos ciklonai dažniausiai yra naudojami įprastomis sąlygomis, e...
Article
Full-text available
Changing the concepts of economic development and introducing new amendments can hardly decrease the accumulation in the soil of such pollutants as metals, remaining there for a long time. The predictive models for describing the balance of metals in the soil, which are based on the ‘atmosphere–plant–soil’ system and reflect the complicated physica...
Article
Full-text available
Three biodegradable materials (i.e. wood chips (WC), digested sewage sludge (DSS), and lignin (LG)) obtained as by-products of industrial processes were selected for biochar (BC) production under slow pyrolysis conditions at 450 and 700 °C. At 450 °C, the analysed trace metals (Cd, Cr, Cu, Ni, Pb, and Zn) showed the same temperature trend with conc...
Article
Unlabelled: Biofiltration is a method of biological treatment belonging to cleaner technologies because it does not produce secondary air pollutants, but helps to integrate natural processes in microorganisms for decomposing volatile air pollutants and solving odor problems. The birch wood biochar has been chosen as a principal material for biofil...
Chapter
Long-term biogeochemical processes occurring in nature are usually judged by their outcome, i.e., the products received in the course of certain biogeochemical reactions. Quality assurance of their result depends on mastering methodological and analytical methods. To this end, the chapter starts with an introduction of the methods used for determin...
Chapter
The This chapter discusses the access of metals to ecosystems and mechanisms for entering trees. The transfer of metals from soil (also owing to an aerogenic load of metals) to trees should be steady; however, external or internal factors determine the investigated system. Environmental pollution, in terms of trees, acts as a stressor as it is clas...
Chapter
One expert in environmental protection has suggested that a number of direct and indirect links can be found between trees and the chemical composition of other components of an ecosystem, which makes it possible to assess the importance of trees in the active soil–plant–atmosphere system of pollutant transfer ‘and evaluate the significance of tree...
Chapter
This chapter briefly reviews the main functions of tree in Earth’s ecosphere, analyzes the overall geological carbon cycle, rates of Earth’s biogeochemical circulation, the main reservoirs of carbon in the lithosphere and ecosphere, and the assessed expected carbon leakage to the stratosphere. Approximately 90 % of the world’s carbon (900 Gt) accum...
Chapter
This chapter further explores the application of wood waste and recovered products in environmental protection but is more focused on the systems for environmental protection engineering where the use of wood products and waste, with respect to the principles of sustainable development, is more favorable owing to lower costs, greater availability,...
Chapter
This chapter deals with the life cycle of trees where the process of using manufactured wood waste in ecotechnologies takes place, thereby recovering valuable components of a wood product (e.g., biochar) and converting some waste into raw materials (e.g., using ash for reclaiming soil). Two products of the thermal treatment of wood, including a sol...
Chapter
This chapter presents the ecotechnological advantages of using trees. In this case, the ecotechnological application of trees is presented as the assessment of the role of trees within their vegetative period in ecosystems using mathematical tools. The chapter describes a method, created by the authors, of dynamic factors to assess biophilicity, bi...
Book
This monograph describes ways of using trees and their byproducts in environmental protection technologies and methodologies throughout their lifecycles. The tree, the planet’s main source of biomass, is an indispensable tool for sustainable technologies, and the authors present a holistic picture of how and why in this volume. The authors describ...
Article
Full-text available
The current study is on the the use of macro-algae as feedstock for biogas production. Three types of macro-algae, Cladophora glomerata (CG), Chara fragilis (CF), and Spirogyra neglecta (SN), were chosen for this research. The experimental studies on biogas production were carried out with these algae in a batch bioreactor. In the bioreactor was ma...
Article
The dynamics of airflow parameters were researched in a six-channel cyclone (separator with a tangential flow). The dependencies of dynamic pressures in cyclone's channels and of cleaning efficiency on an airflow inlet velocity were analyzed. Standard and upgraded semi-rings were used in the cyclone's internal structure. Changes in cleaning efficie...
Article
Nagrinėjami daugialygiai daugiakanaliai ciklonai – naujos kartos oro valymo įrenginiai, galintys pašalinti iš užterštų oro srautų ypač smulkias kietąsias daleles nuo 2 mikronų dydžio bei pasiekti virš 95 % bendrą valymo efektyvumą. Daugiakanalių ciklonų darbas pagrįstas išcentrinių jėgų bei papildomai atsirandančio filtracijos proceso veikimu. Daug...
Article
Full-text available
Cyclone Dust Separators are devices often used to filter solid particles from flue gas. Such cyclones are supposed to filter as much particulate matter from the gaseous stream as possible. At the same time, they should only introduce minimal pressure loss to the system. Hence, collection efficiency has to be maximized and pressure loss minimized. B...
Article
The application of biochar as a sustainable material in biofilters to remove volatile compounds from the air provides a lot of advantages in relation to equipment maintenance and efficiency and ensures a zero-emission process. This work has analysed the morphology of biochar produced from birch and pine at different temperatures, its pore structure...
Article
Full-text available
The biological air treatment method is based on the biological destruction of organic compounds using certain cultures of microorganisms. This method is simple and may be applied in many branches of industry. The main element of biological air treatment devices is a filter charge. Tests were carried out using a new-generation laboratory air purifie...
Article
Full-text available
The article deals with the issues of creative society’s environment. The theses have been developed as follows. 1. Creative venture enters unknown environment concerning consuming. 2. Outstanding society is hardly recognized in consuming environment, which has been forced to change. 3. Creative society is outstanding as much as by arising in consum...
Article
Full-text available
The current research analyzes of biogas and its main component-methane-emissions released from livestock manure and its mixtures anaerobically processed in batch bioreactor at mezophilic mode at 35±1°C. The analysis of four organic waste mixtures has shown that when processing of livestock manure (LM) it is possible to obtain an average of 0.52 m 3...
Article
Full-text available
Urban storm water runoff (USWR) often transports various trace metals, affecting the quality of receiving waters. Metal concentration and speciation in USWR were investigated by analysing data collected during a storm event on 19 July 2012. USWR samples were taken from a low–traffic intensity road, a pathway in a car–free pedestrian zone, and a gal...