Jan Vymazal

Jan Vymazal
Czech University of Life Sciences Prague | CULS · Faculty of Environmental Science

Prof.

About

226
Publications
107,816
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
17,126
Citations
Additional affiliations
September 2007 - present
Czech University of Life Sciences Prague
Position
  • Professor (Full)
January 2001 - December 2012
ENKI O.P.S.
Position
  • Researcher

Publications

Publications (226)
Article
Phosphorus (P) scarcity and the environmental hazards posed by P discharges have triggered the development of technologies for P sequestration and removal from waste streams. Agriculture runoff usually has P concentrations high enough to contribute to eutrophication and harmful algal blooms, but they are still too low for successful P removal with...
Article
Full-text available
Environmental exposure to active pharmaceutical ingredients (APIs) can have negative effects on the health of ecosystems and humans. While numerous studies have monitored APIs in rivers, these employ different analytical methods, measure different APIs, and have ignored many of the countries of the world. This makes it difficult to quantify the sca...
Article
Full-text available
Environmental exposure to active pharmaceutical ingredients (APIs) can have negative effects on the health of ecosystems and humans. While numerous studies have monitored APIs in rivers, these employ different analytical methods, measure different APIs, and have ignored many of the countries of the world. This makes it difficult to quantify the sca...
Article
The study is aimed at the distribution of heavy metals in Phragmites australis growing in constructed wetlands as well as in natural stands. Three full-scale constructed wetlands and five natural wetlands were selected. The shoots of P. australis were analysed for Cu, Cd, Cr, Ni, Pb and Zn. The results revealed that the highest biomass was recorded...
Article
This study investigated the effects of substrates (sand, perlite, vermiculite, and biochar) on the colonization of arbuscular mycorrhizal fungi (AMF) in the roots of Glyceria maxima in constructed wetlands (CWs) and the impacts of AMF inoculation on the removal of six selected pharmaceuticals and personal care products (PPCPs). Results showed that...
Article
Full-text available
Constructed wetlands (CWs) for wastewater treatment are engineered systems that are designed and operated in order to use all natural processes involved in the removal of pollutants from wastewaters. CWs are designed to take advantage of many of the same processes that occur in natural wetlands, but do so within a more controlled environment. The b...
Article
Full-text available
Efficient removal of nitrate under low temperature is challenging because of the reduction of the microbial activity. This study successfully explored the promotion on the performance of denitrification utilizing the immobilized biochar in biofilters under low temperature (6 ± 2 °C). The results showed that the immobilized biochar increased the den...
Article
Full-text available
The present study aimed to develop a pilot-scale integrated system composed of anaerobic biofilter (AF), a floating treatment wetland (FTW) unit, and a vertical flow constructed wetland coupled with a microbial fuel cell (CW-MFC) and a reactive bed filter (RBF) for simultaneously decentralized urban wastewater treatment and bioelectricity generatio...
Article
Greening systems are among the most environmentally friendly technologies for cleaning water and air in urban settlements. The application of green walls has recently broadened from solely offering aesthetic values to focusing on solving urban environmental challenges including wastewater treatment, thereby increasing the efficiency of green buildi...
Article
The review paper sis based on the analysis or nearly 700 research papers published during 2019 and the first half of 2020 and indexed by Web of Science under the password “constructed wetlands for wastewater treatment”. Out of this number 132 papers dealing with “new” topics such as new wastewaters treated in constructed wetlands (CW), new filtrati...
Article
Climbazole (CBZ) and fluconazole (FCZ) belong to the class of azole antifungal drugs that are widely used in medicine and as ingredients of cosmetics, and in result have been frequently detected in municipal and domestic wastewater and in natural watercourses. So far, the behaviour of azole antifungal drugs in constructed wetlands has been scarcely...
Article
This study investigated the role of arbuscular mycorrhizal fungal (AMF) for the removal of ibuprofen (IBU) and diclofenac (DCF) in constructed wetlands (CWs) with four different substrates. Results showed that AMF colonization in adsorptive substrate (perlite, vermiculite, and biochar) systems was higher than that in sand systems. AMF enhanced the...
Method
Full-text available
Předkládaná certifikovaná metodika přináší zásady a postupy pro návrh, realizaci, provoz a údržbu intenzivních, uměle vybudovaných mokřadů, čistících vodu, pocházející ze zemědělské drenáže. Jsou uvedeny informace pro návrh a provoz opatření (umístění, parametry mokřadů, substráty, vegetace, doba zdržení, charakter proudění vody v mokřadu), respekt...
Article
Frost-free areas have suitable climate for wetland plant growth and constructed wetlands (CW) technology. Information on the quantification of plant biomass and uptake efficiency in field-scale CWs is limited in these climates. The removal efficiency of total nitrogen (TN), total phosphorus (TP), chemical oxygen demand (COD), and total suspended so...
Chapter
Wetland areas are one of the most precious ecosystem because they contain rare ecological assets. The total area of wetlands of Turkey is 9.861 km² and wetlands cover 1.2% of total area of Turkey. Unfortunately, most wetland areas of Turkey face great challenges due to various pollution factors including heavy metals pollution caused by rapid indus...
Article
Arbuscular mycorrhizal fungi (AMF) can improve plant tolerance to heavy metal stress in the terrestrial system. However, the detoxification ability of AMF to heavy metals in aquatic systems remains poorly understood. This study investigated the effects of AMF on chromium (Cr) distribution and bioavailability in semi-aquatic habitats under different...
Article
Floating treatment wetlands (FTWs) are increasingly gaining popularity due to a set of valuable features like wastewater remediation under varied conditions, ecosystem quality preservation, landscape conservation, and aesthetic benefits. FTW is a phyto-technology in which macrophytes grow on a floating raft with their roots in permanent contact wit...
Article
Constructed wetlands (CWs) have been regarded as efficient technologies for both wastewater treatment and reuse of water resources. Most studies on CW treatment efficiency are limited to a short-term perspective, and there are still many unknowns about the long-term performance of CWs. Here we evaluated the performance of an integrated CW that has...
Article
The embedding microbial fuel cell (MFC) into constructed wetlands (CW) to form CW-MFC bears the potential to obtain bioelectricity and a clean environment. In this study, a bibliometric analysis using VOSviewer based on Web of Science data was conducted to provide an overview by tracing the development footprint of this technology. The countries, i...
Article
Full-text available
Nanosized plastics (nanoplastics) releasing into the wastewater may pose a potential threat to biological nitrogen removal. Constructed wetland (CW), a wastewater treatment or shore buffer system, is an important sink of nanoplastics, while it is unclear how nitrogen removal in CWs occurs in response to nanoplastics. Here, we investigated the effec...
Article
This study investigated the effects of arbuscular mycorrhizal fungi (AMF) colonization on the growth of wetland plants (Glyceria maxima), and treatment performance in constructed wetlands (CWs) under the stress of pharmaceuticals ibuprofen (IBU) and diclofenac (DCF). Results showed that the growth of G. maxima was significantly increased by AMF col...
Article
Constructed wetlands (CWs) are decentralized wastewater treatment systems considered to be green and low cost. They have the potential to effectively remove pollutants and recycle nutrients with plant composting. However, they need large areas to implement them due to the usual high Hydraulic Retention Times (HRT), reaching up to 50 days. The main...
Article
Constructed wetland (CW) works mostly depending on biological and biochemical processes. No doubt, these processes are affected by climate conditions. This is a challenge and that is why this review was made. By inspecting most of the published full-scale investigations of the CWs worldwide, it seems that the nitrogen is the most sensitive paramete...
Article
Full-text available
Greenhouse gas emissions from wetlands are significantly promoted by global nitrogen input for changing the rate of soil carbon and nitrogen cycling, and are substantially affected by soil labile carbon and nitrogen conversely. However, the driving mechanism by which soil labile carbon and nitrogen affect greenhouse gas emissions from wetland ecosy...
Article
The objective of the present study was to develop a combined system composed of anaerobic biofilter (AF) and floating treatment wetlands (FTW) coupled with microbial fuel cells (MFC) in the buoyant support for treating wastewater from a university campus and generate bioelectricity. The raw wastewater was pumped to a 1,450 L tank, operated in batch...
Article
Arbuscular mycorrhizal fungi (AMF) provide a positive effect on antioxidant mechanisms in terrestrial plants under heavy metal stress. This study investigated the effects of AMF on wetland plant (Iris wilsonii) growth and antioxidant response under Cr stress at different water depths. Results showed that AMF inoculated I. wilsonii had higher antiox...
Article
Diffuse pollution from agricultural drainage is a severe problem for water quality and it is a major reason for the failure to accomplish “good chemical status of surface waters” according to the Water Framework Directive and for the eutrophication of both freshwaters and coastal waters. Constructed wetlands were proposed as a suitable tool for rem...
Article
Uptake of nutrients as a removal process in constructed wetlands with horizontal subsurface flow (HF CWs) treating municipal wastewater is usually considered negligible. However, there is very low number of results which would confirm this assumption. The amount of nutrients sequestered in the aboveground biomass, and thus available for harvesting,...
Article
Arbuscular mycorrhizal fungi (AMF) have been widely reported to occur in the association with wetland plants. However, the factors that affect AMF colonization in wetland plants and physiological functions in AMF inoculated wetland plants are poorly studied. This study investigated the effects of four water regimes (below the surface of sands: wate...
Article
Sludge treatment wetlands (STWs) are widely used to treat sludge in recent years. However, the effects of plant species and loading rates on sludge characteristics in earthworm assistant STWs remain unclear. In the current study, six STWs planted with two plant species (Phragmites australis, Typha angustifolia) were investigated under four loading...
Article
Constructed wetlands (CWs) are engineered systems that are constructed to mimic natural wetlands. These systems simulate the processes that happen in natural wetlands and remove pollutants from wastewater. CWs have been previously used to treat a wide range of waste streams, including landfill leachate, and they have shown relatively good removal e...
Chapter
The treatment of domestic wastewater using constructed wetlands (CWs) is common in the Czech Republic; however, the treatment of agro-industrial wastewater is still at the beginning of its application. A hybrid CW consisting of two horizontal filters (HF1 and HF2), one vertical filter (VF), and three stabilization ponds (SP1–SP3) was put into opera...
Article
Plant litter plays an important role in affecting the water quality of wetland ecosystems. However, it is unknown whether litter decomposability and species traits might predict water quality changes during litter submergence. Here, we conducted a greenhouse experiment to examine the effects of four submerged plant species, together with two water...
Article
Iron is present in all types of wastewater, however besides acid mine drainage, where it is a major constituent of concern, it is usually neglected in other types of wastewaters. In all kinds of constructed wetlands iron plays important role in removal of organics, phosphorus and does have an impact on transformation of nitrogen, sulphur and metals...
Article
Constructed wetlands with horizontal subsurface flow (HF CWs) were the most common type of constructed wetlands used for municipal sewage during the 1980s and 1990s. Because of predominant anoxic and anaerobic conditions in the filtration beds, this CW type was primarily used for removal of organics and suspended solids. HF CWs were replaced with v...
Article
Iron is present in all types of wastewater, however besides acid mine drainage, where it is a major constituent of concern, it is usually neglected in other types of wastewaters. In all kinds of constructed wetlands iron plays important role in removal of organics, phosphorus and does have an impact on transformation of nitrogen, sulphur and metals...
Article
The efficiency of active aeration (AE) of constructed wetlands expressed as the ratio between implied oxygen consumption and oxygen delivered to the system is comprehensively reviewed in this paper. The aeration efficiency appears to be rather low with a mean value of 1.73% and median value of 0.48% of oxygen used in the systems for situations with...
Presentation
Full-text available
The drainage water from agriculture land generates nitrogen pollution and can include dissolved or particulate pesticides when part of the agricultural practice. This diffuse pollution poses a significant eutrophication problem in receiving surface water bodies (Borin and Tocchetto, 2007). Treatment wetlands (TWs) are a low-cost solution for the tr...
Article
Full-text available
One of the possible ways to improve the operation efficiency of constructed wetlands and to prevent their clogging is the application of earthworms. They have already been successfully applied for vermicomposting and for sludge dewatering and treatment. A few studies have already examined the effect of earthworms on the treatment of wastewater by v...
Article
The use of sludge in agriculture within the European Union (EU) is currently regulated only by the limits of heavy metals (Cd, Cu, Hg, Ni, Pb and Zn) listed in Council Directive 86/278/EEC. This document is now more than 30 years old. Several European countries have introduced more stringent requirements in comparison with the directive, and have a...
Article
Relationship between the phenolics content and the decomposition rate of Carex nigra, Scirpus sylvaticus, Phalaris arundinacea and Phragmites australis was evaluated in this study. The study was aimed at the selection of plants growing in the Czech Republic, that can be used for constructed wetlands treating agricultural runoff and that can also co...
Article
Full-text available
The possibility to remove nutrients from two eutrophic fishponds in the Czech Republic through harvesting the dominant submerged species, Ceratophyllum demersum and Stuckenia pectinata , was evaluated. Both plants were sampled in three locations within the fishpond in two-week intervals from late June to late September 2016. In the biomass of both...
Article
The extensive use of silver nanoparticles (Ag NPs) inevitably leads to their release into aquatic ecosystems through sewage discharge. Currently, the impact of Ag NPs on activated sludge has been widely reported, however little is known about how Ag NPs influence nitrogen transformation and metabolic pathways in biofilm systems. In this study, the...
Article
Full-text available
Water quality in rural catchments is influenced by many societal and bio-physical factors ( e.g . different pollution sources, land use and land cover changes). Good ecological status and surface water quality are currently challenged mainly due to different poorly identified pollution sources. The main objective of this study is to estimate the po...
Article
Ibuprofen (IBU) and its major metabolites, hydroxyibuprofen (OH-IBU) and carboxyibuprofen (CA-IBU) were monitored from November 2015 to March 2017 at four full-scale constructed wetlands with horizontal subsurface flow treating municipal wastewater in the Czech Republic. During the seven sampling campaigns, all three compounds were identified in hi...
Article
Agricultural drainage is significant source of nutrients, which contributes to eutrophication of reservoirs and coastal areas. Constructed wetlands and vegetated ditches are promising techniques used for elimination of nutrients and suspended solids from agricultural drainage. While constructed wetlands have been successfully used for several decad...
Article
During the period 2014-2016, removal of nutrients, organics and suspended solids from a small rural stream impacted by agricultural drainage in a natural and semi-constructed wetlands was evaluated. In 2014, the wetland was irregularly flooded during high flows in the stream, in 2015, the stream bed was cleaned and as a result the water level dropp...
Article
To better understand the performance of constructed wetlands (CWs) to remove acidic pharmaceuticals (APs) in wastewaters in subtropical areas and to optimize CW design criteria, six small-scale CWs under different design configurations were operated. The factors (environmental parameters, water quality, and seasonality) influencing the APs removal...
Chapter
Constructed wetlands (CWs) have been used for wastewater treatment since the 1960s. Constructed wetlands are engineered systems that have been designed and constructed to utilize natural processes involving wetland soils, vegetation, and microbes to treat wastewater. Constructed wetlands may be categorized according to the various design parameters...
Article
Less seasonal temperature variation in humid tropical and subtropical climate makes unique wastewater and removal performance of constructed wetlands (CWs) in South China. Nine single-stage CWs consisting of surface flow (SF), horizontal subsurface flow (HF) and vertical flow (VF) units vegetated with Canna indica or Thalia dealbata, as well as unv...
Article
Full-text available
The possibility to remove nutrients from two eutrophic fishponds in the Czech Republic through harvesting the dominant submerged species, Ceratophyllum demersum and Stuckenia pectinata, was evaluated. Both plants were sampled in three locations within the fishpond in two-week intervals from late June to late September 2016. In the biomass of both p...
Article
A successful design and operation of up-flow constructed wetlands combined with microbial fuel cell (UCW-MFC) were assessed for wastewater treatment and bioelectric production. One of the main aims of present study is also to investigate effect of various types of filtration media on wastewater treatment process and bioelectric production in UCW-MF...
Article
This study aimed to shed further light on the capacity of macrophytes to translocate, accumulate and bioindicate the levels of trace elements present in contaminated water and sediments. Specifically, this study aimed to find evidence whether translocation, accumulation and bioindication are dependent on the kind of trace element and plant species....
Article
Full-text available
Phenolics are the most widely distributed class of plant secondary metabolites and higher plants are able to produce several thousand different phenolic compounds. It has been reported that phenolics are more resistant to decomposition due to the negative impact on the microorganisms involved. Therefore, it may be hypothesized that the higher conte...
Article
Full-text available
Constructed wetlands are used to treat wastewater, however, their performance and usage can be improved by selecting a suitable substrate. Various plants may differ in their capacity to assimilate nutrients in a constructed wetland system. In this research, Michaelis-Menten kinetic (Michaelis -Menten constant (Km) and maximum uptake rate (Imax)) pr...
Article
Constructed wetlands with horizontal subsurface flow (HF CWs) are primarily designed to remove organics and suspended solids. The major principle of this treatment process is that wastewater flows through the porous medium planted with wetland vegetation in order to achieve removal of pollutants. During the process the void spaces in the filtration...
Article
We measured soil organic carbon (C) sequestration and nutrient (nitrogen-N, phosphorus- P) burial in Czech and Midwest U.S. freshwater floodplain and depressional wetlands to evaluate how landscape position and agricultural land use intensity affects C, N, and P retention. Land use in the South Bohemia of the Czech Republic is dominated by forest a...
Article
Full-text available
Littorella uniflora (Plantaginaceae) is a scarce and declining aquatic plant in Europe. Its population has been strongly reduced by changes in fishpond management (eutrophication) in the Czech Republic since the 1950s. We studied its seed bank in both recent (n = 8) and historical localities (the last found from 1972 to 2000; n = 10) and tested the...
Article
This study investigated the accumulation of various elements in six species of macrophytes differing in biomass size, anatomy, life form and ecology: Phragmites australis, Arundo donax, Typha domingensis, Apium nodiflorum, Nasturtium officinale, and Zannichellia peltata. In particular, the concentrations of Al, As, Cd, Cr, Cu, Hg, Mn, Ni, Pb and Zn...
Article
Full-text available
. Constructed wetlands were proven to be the efficient method for treatment of agricultural wastewaters in last two decades. In this study, the performance of a constructed wetland for treating wastewater from small farm was tested. The constructed wetland for 75 PE with horizontal subsurface flow at Chrámce, Central Bohemian Uplands, Czech Republi...
Article
Constructed wetlands (CWs) are natural-like systems for wastewater treatment capable to remove both pollutants and nutrients without additional energy demand. In these systems, gaseous compounds are released into the atmosphere through microbial processes. Among these gases carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) are the most da...
Article
The application of innovative technologies in water management, such as wastewater reuse, requires a deeper understanding of emerging pollutants, including pharmaceuticals. This study presents a unique pilot site at Horni Beřkovice in Central Bohemia, where wastewater parameters are significantly influenced by the effluent from a local psychiatric...
Article
Full-text available
Diffuse pollution from agricultural drainage is a severe problem for water quality and it is a major reason for eutrophication of both freshwaters and coastal waters. Constructed wetlands were proposed as a suitable tool for removal of nitrogen from agricultural drainage in the early 1990s. Since then constructed wetlands with free water surface ha...
Article
Full-text available
Three different flow regimes were carried out in a pilot-scale horizontal subsurface flow constructed wetland-treating sulfate rich wastewater contaminated with monochlorobenzene (MCB) and perchloroethene (PCE). The three regimes were continuous flow, 7-day cycle discontinuous flow, and 2.5-day cycle discontinuous flow. The results show that intens...
Article
Constructed Wetlands (CWs), which usually feature limited supply of electron acceptors, possess complex microbial nitrogen removal pathways. Based on Illumina high-throughput sequencer, ¹⁵N isotopic tracer, and three years of physicochemical analysis, in this study, we report on a complex microbial consortium responsible for the nitrogen removal in...
Article
Constructed wetlands (CWs) for pesticide mitigation from agricultural runoff became widespread in the last decade. However, comparison of different types of CWs at one location is missing. Therefore, site by site comparison of three different types (subsurface flow, surface flow and floating hydroponic root mat) of CWs treating four chloroacetanili...
Article
The ability to remove 31 pharmaceuticals was surveyed during seven sampling campaigns at four horizontal flow constructed wetlands in rural areas of the Czech Republic. The constructed wetlands involved in the study treated wastewater from 55 to 248 PE and have been in operation for 10–22 years. A total of 31 pharmaceuticals belonging to antibiotic...
Article
Hydroponic root mats (HRMs) are relatively new ecological water treatment technology with the aquatic vegetation forming buoyant root mats by their dense interwoven roots and rhizomes, either floating or sitting on the bottom of the water body. The aim of this study was to investigate the treatment of water contaminated by volatile organic compound...
Chapter
The objective of this study was to evaluate nitrogen and phosphorus compartmentalization in the aboveground biomass of Phragmites australis and its seasonality. The study was carried out at four sites in the littoral zones of two fishponds near Prague, Czech Republic. The aboveground biomass was harvested in early July and late August and the bioma...
Chapter
Chloroform is a volatile organic contaminate widely detected in groundwater, surface water and wastewater effluent, thus its fate in the natural treatment systems is of great importance to the environment and human’s health. In this study, the transformation processes were studied for six model constructed wetlands (CWs), for treating chloroform in...