scholarly journals Remediation of groundwater contamination from an old, non-functional landfill in Hořkovec open cast mine, Czech Republic

2019 ◽  
Vol 68 (8) ◽  
pp. 829-841 ◽  
Author(s):  
Adyl Anvarov ◽  
Adelaida Pelaez Angel ◽  
Beatriz Felices Rando ◽  
Jimena Lazaro Gil
Keyword(s):  
Czech Republic ◽  
Chemical Oxidation ◽  
Sodium Persulfate ◽  
The Czech Republic ◽  
In Situ Chemical Oxidation ◽  
Different Types ◽  
Open Cast Mine ◽  
Pre Treatment ◽  
Open Cast

Abstract The main aim of this work was to assess different suitable strategies for the remediation of groundwater contaminated with the leachate from an old, not functional landfill located next to Hořkovec open cast mine, in the Czech Republic. The leachate consisted of mainly chlorinated aliphatic compounds and aromatic volatile compounds. The site, that had already been treated, was observed to show rebounding effects after the first remediation treatment. This article analyses the possibilities of using different types of remediation technologies that include in-situ chemical oxidation (ISCO) with different oxidants (potassium permanganate, sodium permanganate and sodium persulfate), as well as in-situ bioremediation (ISB), and the combination of both types of treatment. From the results of the analysis it was concluded that the best option for this case was to carry out a pre-treatment of the area by ISCO with sodium persulfate as the oxidant agent and then a further biological treatment.

Impacts of Changing Operational Parameters of In Situ Chemical Oxidation (ISCO) on Removal of Aged PAHs from Soil

2012 ◽  
Vol 15 (2) ◽  
Author(s):  
Paula Cajal-Mariñosa ◽  
Ruth G. de la Calle ◽  
F. Javier Rivas ◽  
Tuula Tuhkanen
Keyword(s):  
Hydrogen Peroxide ◽  
Removal Efficiency ◽  
Contaminated Soil ◽  
Chemical Oxidation ◽  
Contaminant Removal ◽  
Operational Parameters ◽  
In Situ Chemical Oxidation ◽  
Different Types ◽  
Wood Impregnation

AbstractThe removal efficiency of two different types of peroxide addition, catalyzed hydrogen peroxide (CHP) and sodium percarbonate (SPC) were compared on a highly PAH-contaminated soil from a wood impregnation site. In an attempt to simulate real in situ reagents delivery, experiments have been carried out in acrylic columns. The main parameters affecting contaminant removal were the reagent’s temperature and the total addition of peroxide (g

EVALUATION OF NOISE ATTENUATION OF BARRIERS WITH GREENERY IN THE CZECH REPUBLIC

Akustika ◽  
2021 ◽  
pp. 8-17
Author(s):  
Petra Marková ◽  
Vítězslav Křivánek ◽  
Blanka Hablovičová ◽  
Jindřich Frič
Keyword(s):  
Czech Republic ◽  
Growing Season ◽  
Noise Attenuation ◽  
Short Term ◽  
Noise Barriers ◽  
The Czech Republic ◽  
Measurement Results ◽  
Different Types ◽  
Noise Barrier

The article is focused on the measurements of different types of “environmental” built noise barriers (semi-vegetation, green belt, barriers with vegetation) which were measured in the different places in the Czech Republic. In situ measuring was carried out in accordance with the standard ISO 1996. Short-term synchronous measurements were carried out in front of and behind the noise barrier and the effectiveness of noise barriers was determined. The measurement results show a slight increase in acute attenuation in anti-noise elements using vegetation. During the growing season, when greening occurs, a more pronounced acoustic attenuation compared to dormancy has been clearly demonstrated. This research was supported by the Ministry of Transport of the Czech Republic.

In-situ chemical oxidation: peroxide or persulfate coupled with membrane technology for wastewater treatment

2021 ◽  
Author(s):  
Huchuan Yan ◽  
Cui Lai ◽  
Dongbo Wang ◽  
Shiyu Liu ◽  
Xiaopei Li ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Organic Pollutants ◽  
Health And Safety ◽  
Chemical Oxidation ◽  
Membrane Technology ◽  
In Situ Chemical Oxidation ◽  
Refractory Organic Pollutants

Refractory organic pollutants in wastewater have the characteristics of persistence and toxicity, which seriously threaten the health and safety of humans and other organisms. Many researchers have committed to developing...

scholarly journals Decontamination of dense nonaqueous-phase liquids in groundwater using pump-and-treat and in situ chemical oxidation processes: a field test

RSC Advances ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 4237-4246
Author(s):  
Tian Xie ◽  
Zhi Dang ◽  
Jian Zhang ◽  
Qian Zhang ◽  
Rong-Hai Zhang ◽  
...  
Keyword(s):  
Field Test ◽  
Chemical Oxidation ◽  
Nonaqueous Phase Liquids ◽  
Dense Nonaqueous Phase Liquids ◽  
In Situ Chemical Oxidation ◽  
Oxidation Processes ◽  
Pump And Treat

The combination of pump-and-treat and in situ chemical oxidation processes can effectively accelerate the remediation of DNAPL pollutant in groundwater.

scholarly journals Assigning a Value to Volunteering in Requests for Proposals

SAGE Open ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 215824402110095
Author(s):  
Jakub Dostál
Keyword(s):  
Czech Republic ◽  
Theoretical Basis ◽  
Economic Value ◽  
European Economic Area ◽  
The Czech Republic ◽  
A Value ◽  
Economic Area ◽  
Different Types ◽  
The Relationship ◽  
Volunteer Time

The economic value of volunteering is an increasingly important part of volunteering management. It has become part of public policies. Some requests for proposals (RFP) enable nonprofits to include the value of volunteer time in compulsory co-financing. These RFP include the European Economic Area (EEA) Grants and Norway Grants. This article addresses the relationship in the value of volunteering, also called in-kind volunteering contributions. The research includes two case studies of finances from EEA and Norway Grants in the Czech Republic: the Czech NGO Programme, responsible for allocating grants between 2009 and 2014, and the Active Citizens Fund, responsible for allocating grants between 2014 and 2021. They share elements through the EEA and Norway Grants rules. However, they use different types of specialist replacement wages. The article summarizes the arguments for including in-kind volunteering contributions. It presents the possible values of these contributions in the selected cases, including the relationship between the type of volunteering and the number of hours necessary to achieve these values. The article defines the theoretical basis for calculating the value of in-kind volunteer contributions and illustrates this with real examples of allocations from EEA and Norway Grants.

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