Skip Content
You are currently on the new version of our website. Access the old version .

163 Results Found

  • Article
  • Open Access
6 Citations
3,580 Views
21 Pages

Prediction of the Stability of Chemical Composition of Therapeutic Groundwater

  • Karolina Kurek,
  • Agnieszka Operacz,
  • Piotr Bugajski,
  • Dariusz Młyński,
  • Andrzej Wałęga and
  • Jan Pawełek

27 December 2019

The aim was to assess the stability of the chemical composition of the groundwater in terms of maintaining the status of therapeutic waters in accordance with the Geological and Mining Law in Poland. The basis for the analysis was the results of stat...

  • Article
  • Open Access
2,260 Views
24 Pages

17 August 2023

This study focused on free carbon dioxide (H2CO3) contained in volcanic hot spring water. It was clarified whether free carbon dioxide can be emitted into the atmosphere and increase the CO2 concentration in greenhouses by using the incubation method...

  • Article
  • Open Access
1 Citations
1,539 Views
11 Pages

Transport of Au–Ag Nanoparticles in Dense Carbon Dioxide Fluid of the Middle Crust

  • Vsevolod Yu. Prokofiev,
  • David A. Banks,
  • Konstantin V. Lobanov,
  • Sofiya L. Selektor,
  • Valentin A. Milichko,
  • Andrey A. Borovikov and
  • Mikhail V. Chicherov

30 November 2024

Individual fluid inclusions with dense carbon dioxide hosted in quartz from the gold-bearing interval penetrated by the SD-3 Kola Superdeep Borehole were studied using modern techniques. The composition and density of the carbon dioxide fluid were de...

  • Article
  • Open Access
1 Citations
1,664 Views
10 Pages

6 March 2024

To investigate the characteristics and generation potential of gas generated from over-mature shale, hydrous and anhydrous pyrolysis experiments were carried out on the Longmaxi Formation in the Anwen 1 well of the Sichuan Basin of China at temperatu...

  • Article
  • Open Access
18 Citations
3,374 Views
15 Pages

2 September 2020

The article describes a mathematical model of pumping of heated liquid carbon dioxide into a reservoir of finite extent, the pores of which in the initial state contain methane and methane gas hydrate. This model takes into account the existence in t...

  • Feature Paper
  • Article
  • Open Access
2 Citations
3,458 Views
14 Pages

Evaluation of Relative Permeability Curves in Sandstone Core Flooding Using Computational Fluid Dynamics

  • Tathagata Acharya,
  • Liaosha Song,
  • Elizabeth Duginski and
  • Andrew Goodwin

6 March 2023

Geological carbon sequestration is a proven method of safely storing carbon dioxide in formations, thereby reducing atmospheric carbon imprint and mitigating global warming. The relative permeability to carbon dioxide versus brine/water in geological...

  • Article
  • Open Access
10 Citations
3,769 Views
20 Pages

Ore–Bearing Fluids of the Blagodatnoye Gold Deposit (Yenisei Ridge, Russia): Results of Fluid Inclusion and Isotopic Analyses

  • Elena Shaparenko,
  • Nadezhda Gibsher,
  • Anatoly Tomilenko,
  • Anatoly Sazonov,
  • Taras Bul’bak,
  • Maria Ryabukha,
  • Margarita Khomenko,
  • Sergey Silyanov,
  • Natalya Nekrasova and
  • Marina Petrova

3 October 2021

The Blagodatnoye deposit with 340 t gold reserves is one of the most productive mines in Russia. Modern methods of studying fluid inclusions were used to determine the properties of fluids that formed this deposit. A comprehensive study revealed that...

  • Article
  • Open Access
1,878 Views
13 Pages

27 September 2022

Class C fly ash has been receiving increasing attention due to the gradual transition of thermal power plants all over the world to the fluidized bed combustion technology with sulfur dioxide emissions capture. This research investigates the utilizat...

  • Article
  • Open Access
742 Views
20 Pages

19 March 2025

Since it was proposed, the replacement process, in natural gas hydrate reservoirs, has been considered as one of the most promising options to obtain an alternative and potentially carbon-neutral energy source. However, such a process shows high comp...

  • Article
  • Open Access
10 Citations
5,239 Views
11 Pages

Capture of Fermentation Gas from Fermentation of Grape Must

  • Bozena Prusova,
  • Jakub Humaj,
  • Michaela Kulhankova,
  • Michal Kumsta,
  • Jiri Sochor and
  • Mojmir Baron

28 January 2023

During alcoholic fermentation, a considerable amount of carbon dioxide (CO2) is produced, and the stream of CO2 can strip aromatic substances from the fermenting must. Aroma losses during fermentation can be significant and may lead to a reduction in...

  • Article
  • Open Access
7 Citations
3,846 Views
16 Pages

This paper addresses potential application of data on stable carbon and oxygen isotope composition of carbonates for study of organic rich source rocks on the example of the Late Jurassic–Early Cretaceous Bazhenov Formation (West Siberian petroleum b...

  • Article
  • Open Access
3,027 Views
14 Pages

Sustainable and Safe N-alkylation of N-heterocycles by Propylene Carbonate under Neat Reaction Conditions

  • Andrea Czompa,
  • Dóra Bogdán,
  • Balázs Balogh,
  • Eszter Erdei,
  • Patrik Selymes,
  • Attila Csomos and
  • István M. Mándity

A new, eco-friendly process utilising the green solvent propylene carbonate (PC) has been developed to perform N-alkylation of N-, O- and/or S-containing heterocyclic compounds. PC in these reactions served as both the reagent and solvent. Importantl...

  • Article
  • Open Access
9 Citations
4,083 Views
18 Pages

2 February 2019

Zeolites are micro- and mesoporous aluminosilicate minerals (both natural and industrially produced) widely used as catalysts and sorbents in domestic and commercial water purification and separation technologies. Their ability to selectively adsorb...

  • Feature Paper
  • Article
  • Open Access
14 Citations
7,989 Views
11 Pages

BILP-19—An Ultramicroporous Organic Network with Exceptional Carbon Dioxide Uptake

  • Christoph Klumpen,
  • Florian Radakovitsch,
  • Andreas Jess and
  • Jürgen Senker

12 August 2017

Porous benzimidazole-based polymers (BILPs) have proven to be promising for carbon dioxide capture and storage. The polarity of their chemical structure in combination with an inherent porosity allows for adsorbing large amounts of carbon dioxide in...

  • Review
  • Open Access
5 Citations
4,320 Views
43 Pages

Carp Breeding in the Carpathian Basin with a Sustainable Utilization of Renewable Natural Resources

  • Laszló Horváth,
  • Éva Kovács,
  • Balázs Csorbai,
  • Árpád Hegyi,
  • Kinga Lefler,
  • Tamás Müller and
  • Béla Urbányi

20 October 2022

In the Central European region, there is a long tradition of breeding fish in artificially constructed ponds. As the area belongs to the temperate zone, farmed fish need to survive cold winter periods. Common carp (Cyprinus carpio L.), which is an om...

  • Article
  • Open Access
2 Citations
1,053 Views
24 Pages

The global construction industry heavily relies on cementitious systems, which are a major contributor to carbon dioxide emissions due to the energy-intensive nature of cement production. These emissions account for approximately 8% of global CO2 out...

  • Article
  • Open Access
2 Citations
2,447 Views
25 Pages

20 August 2023

Fengyun-3E (FY-3E)/Hyperspectral Infrared Atmospheric Sounder-II (HIRAS-II) is an extension Fengyun-3D (FY-3D)/HIRAS-I. It is crucial to fully explore and analyze the detection capabilities of these two instruments for atmospheric gas composition. Ba...

  • Review
  • Open Access
39 Citations
9,690 Views
30 Pages

Greenhouse Gas Sensors Fabricated with New Materials for Climatic Usage: A Review

  • Kalathur S. V. Santhanam and
  • Nuzhet Nihaar Nasir Ahamed

With the increasing utilization of fossil fuels in today’s technological world, the atmosphere’s concentration of greenhouse gases is increasing and needs to be controlled. In order to achieve this goal, it is imperative to have sensors t...

  • Article
  • Open Access
2 Citations
2,632 Views
23 Pages

24 February 2023

The composition of volatile components of cordierite from the Muzkol metamorphic complex was studied using shock destruction with pyrolysis-free gas chromatography-mass spectrometry (GC-MS) with simultaneous IR and Raman spectroscopy. Applying the GC...

  • Article
  • Open Access
116 Citations
8,770 Views
16 Pages

Biodegradable Poly(Butylene Adipate-Co-Terephthalate) and Thermoplastic Starch-Blended TiO2 Nanocomposite Blown Films as Functional Active Packaging of Fresh Fruit

  • Danaya Phothisarattana,
  • Phanwipa Wongphan,
  • Khwanchat Promhuad,
  • Juthathip Promsorn and
  • Nathdanai Harnkarnsujarit

30 November 2021

Biodegradable polymers can be used for eco-friendly, functional, active packaging to preserve food quality. Incorporation of titanium dioxide (TiO2) nanoparticles into polymer packaging enhances ethylene-scavenging activity and extends the shelf-life...

  • Article
  • Open Access
87 Citations
5,750 Views
22 Pages

The Method of Combating Coal Spontaneous Combustion Hazard in Goafs—A Case Study

  • Dawid Szurgacz,
  • Magdalena Tutak,
  • Jarosław Brodny,
  • Leszek Sobik and
  • Olga Zhironkina

2 September 2020

One of the major natural hazards occurring during the process of mining exploitation are endogenous fires. They cause very large material losses and constitute a threat to the health and life of the workers. Such fires usually start and develop in th...

  • Article
  • Open Access
2 Citations
6,123 Views
11 Pages

13 September 2022

Carbon Capture and Storage (CCS) technology has attracted increasing attention as global climate change accelerates. Carbon dioxide removal processes under development include pressure swing adsorption (PSA) and chemical absorption using amine solven...

  • Article
  • Open Access
3 Citations
6,017 Views
19 Pages

Organic Carbon Concentrations in High- and Low-Productivity Areas of the Sulu Sea

  • Charissa M. Ferrera,
  • Gil S. Jacinto,
  • Chen-Tung Arthur Chen and
  • Hon-Kit Lui

4 June 2018

The sequestration of anthropogenic carbon dioxide in the form of organic carbon and its eventual deposition in the sediments is an important component of the marine carbon cycle. In the Sulu Sea, Philippines, organic carbon contents in the sediments...

  • Article
  • Open Access
8 Citations
8,831 Views
12 Pages

Plastron Respiration Using Commercial Fabrics

  • Shaun Atherton,
  • Joseph C. Brennan,
  • Robert H. Morris,
  • Joshua D.E. Smith,
  • Christopher A.E. Hamlett,
  • Glen McHale,
  • Neil J. Shirtcliffe and
  • Michael I. Newton

16 January 2014

A variety of insect and arachnid species are able to remain submerged in water indefinitely using plastron respiration. A plastron is a surface-retained film of air produced by surface morphology that acts as an oxygen-carbon dioxide exchange surface...

  • Article
  • Open Access
11 Citations
3,882 Views
17 Pages

3 April 2023

Complex wells with high temperature and the presence of carbon dioxide and hydrogen sulfide acid gas require the use of high-temperature and high-density anti-corrosion cement slurry for cementing operations, and conventional cement slurry does not h...

  • Article
  • Open Access
20 Citations
5,006 Views
25 Pages

5 February 2023

Mo/W-containing formate dehydrogenases (FDH) catalyzed the reversible oxidation of formate to carbon dioxide at their molybdenum or tungsten active sites. While in the reaction of formate oxidation, the product is CO2, which exits the active site via...

  • Article
  • Open Access
90 Citations
10,136 Views
21 Pages

Chemical-Physical Properties and Bioactivity of New Premixed Calcium Silicate-Bioceramic Root Canal Sealers

  • Fausto Zamparini,
  • Carlo Prati,
  • Paola Taddei,
  • Andrea Spinelli,
  • Michele Di Foggia and
  • Maria Giovanna Gandolfi

11 November 2022

The aim of the study was to analyze the chemical–physical properties and bioactivity (apatite-forming ability) of three recently introduced premixed bioceramic root canal sealers containing varied amounts of different calcium silicates (CaSi):...

  • Article
  • Open Access
17 Citations
3,903 Views
23 Pages

Pool Fire Suppression Using CO2 Hydrate

  • Olga Gaidukova,
  • Sergey Misyura,
  • Igor Donskoy,
  • Vladimir Morozov and
  • Roman Volkov

16 December 2022

This paper presents experimental findings on heat and mass transfer, phase transitions, and chemical reactions during the interaction of CO2 hydrate in powder granules and tablets with burning liquid fuels and oil. The experiments involved CO2 hydrat...

  • Article
  • Open Access
8 Citations
2,604 Views
15 Pages

Reaction of Lavandula angustifolia Mill. to Water Treated with Low-Temperature, Low-Pressure Glow Plasma of Low Frequency

  • Katarzyna Ciesielska,
  • Wojciech Ciesielski,
  • Tomasz Girek,
  • Henryk Kołoczek,
  • Zdzisław Oszczęda and
  • Piotr Tomasik

12 November 2020

Lavandula angustifolia was watered with either deionized tap water treated with low-temperature, low-pressure glow plasma of low frequency in the air (LPGPA), under oxygen-free nitrogen (LPGPN), methane (LPGPM), carbon dioxide (LPGPC) or molecular ox...

  • Article
  • Open Access
10 Citations
3,164 Views
20 Pages

Characterization of an Isostructural MOF Series of Imidazolate Frameworks Potsdam by Means of Sorption Experiments with Water Vapor

  • Dirk Otter,
  • Suvendu Sekhar Mondal,
  • Anas Alrefai,
  • Lorenz Krätz,
  • Hans-Jürgen Holdt and
  • Hans-Jörg Bart

Sorption measurements of water vapor on an isoreticular series of Imidazolate Frameworks Potsdam (IFP), based on penta-coordinated metal centers with secondary building units (SBUs) connected by multidentate amido-imidate-imidazolate linkers, have be...

  • Article
  • Open Access
22 Citations
4,736 Views
17 Pages

Supercritical Fluid Extraction with CO2 of Curcuma longa L. in Comparison to Conventional Solvent Extraction

  • Ann-Kathrin Widmann,
  • Martin A. Wahl,
  • Dietmar R. Kammerer and
  • Rolf Daniels

Curcuma longa L. is a traditional medicinal and spice plant containing a variety of lipophilic active substances with promising therapeutic properties. In this work, the solvent properties of supercritical carbon dioxide in a pressure and temperature...

  • Article
  • Open Access
5 Citations
4,652 Views
16 Pages

Nitrous oxide (N2O) has 265 times greater greenhouse potential than carbon dioxide and its atmospheric concentration has increased by about 20% since industrialization; however, N2O production and emissions from aquatic systems are poorly constrained...

  • Article
  • Open Access
28 Citations
10,408 Views
20 Pages

Carbon Nanotube- and Carbon Fiber-Reinforcement of Ethylene-Octene Copolymer Membranes for Gas and Vapor Separation

  • Zuzana Sedláková,
  • Gabriele Clarizia,
  • Paola Bernardo,
  • Johannes Carolus Jansen,
  • Petr Slobodian,
  • Petr Svoboda,
  • Magda Kárászová,
  • Karel Friess and
  • Pavel Izak

3 January 2014

Gas and vapor transport properties were studied in mixed matrix membranes containing elastomeric ethylene-octene copolymer (EOC or poly(ethylene-co-octene)) with three types of carbon fillers: virgin or oxidized multi-walled carbon nanotubes (CNTs) a...

  • Article
  • Open Access
5 Citations
5,089 Views
7 Pages

6 April 2021

The concentration of dissolved inorganic carbon in the oceans at depths of a few meters to thousands of meters is a critical parameter for understanding global warming. The concentration is both pH dependent and depth dependent. Current analysis that...

  • Article
  • Open Access
5 Citations
1,859 Views
19 Pages

Thermal Behavior of Estonian Graptolite–Argillite from Different Deposits

  • Tiit Kaljuvee,
  • Kaia Tõnsuaadu,
  • Marve Einard,
  • Valdek Mikli,
  • Eliise-Koidula Kivimäe,
  • Toivo Kallaste and
  • Andres Trikkel

1 October 2022

Graptolite–argillites (black shales) are studied as potential source of different metals. In the processing technologies of graptolite–argillites, a preceding thermal treatment is often applied. In this study, the thermal behavior of Esto...

  • Article
  • Open Access
27 Citations
5,971 Views
21 Pages

Synthesis and Characterization of Biochar-Based Geopolymer Materials

  • Federica Piccolo,
  • Fernanda Andreola,
  • Luisa Barbieri and
  • Isabella Lancellotti

19 November 2021

The aim of this research is to evaluate the possibility to realize alkali-activated materials exploiting biochar, a secondary raw material coming from pyrolysis/gasification processes, for environmental benefits, such as improvement of soil fertility...

  • Article
  • Open Access
2 Citations
1,838 Views
14 Pages

23 February 2025

Steel slag, which is the industrial waste produced by the steel-making process, contains more than 4% unstable free calcium oxide, which limits its applications. The problem of CO2 emission also needs to be solved; steel slag carbonation can not only...

  • Article
  • Open Access
10 Citations
4,917 Views
12 Pages

31 July 2018

This article presents gas hydrate experimental measurements for mixtures containing methane (CH4), carbon dioxide (CO2) and nitrogen (N2) with the aim to better understand the impact of water (H2O) on the phase equilibrium. Some of these phase equili...

  • Article
  • Open Access
70 Citations
7,903 Views
31 Pages

11 August 2020

Composites containing natural fibers are considered environmentally friendly materials which is related to the reduced use of fossil fuels and the emission of carbon dioxide compared to petroleum-based polymers. Nevertheless, a complete evaluation of...

  • Article
  • Open Access
18 Citations
4,546 Views
15 Pages

Deep Learning for Gas Sensing via Infrared Spectroscopy

  • M. Arshad Zahangir Chowdhury and
  • Matthew A. Oehlschlaeger

14 March 2024

Deep learning methods, a powerful form of artificial intelligence, have been applied in a number of spectroscopy and gas sensing applications. However, the speciation of multi-component gas mixtures from infrared (IR) absorption spectra using deep le...

  • Article
  • Open Access
148 Citations
12,786 Views
12 Pages

Capsaicin: A Potent Inhibitor of Carbonic Anhydrase Isoenzymes

  • Betul Arabaci,
  • Ilhami Gulcin and
  • Saleh Alwasel

10 July 2014

Carbonic anhydrase (CA, EC 4.2.1.1) is a zinc containing metalloenzyme that catalyzes the rapid and reversible conversion of carbon dioxide (CO2) and water (H2O) into a proton (H+) and bicarbonate (HCO3) ion. On the other hand, capsaicin is the main...

  • Article
  • Open Access
4 Citations
24,329 Views
16 Pages

3 August 2023

This paper compares the ideas contained in the main papers published on climate change since World War II to arrive at a suggested consensus of our present knowledge regarding climatic changes and their causes. Atmospheric carbon dioxide is only sugg...

  • Article
  • Open Access
13 Citations
3,512 Views
29 Pages

Containment and Suppression of Class A Fires Using CO2 Hydrate

  • Olga Gaidukova,
  • Vladimir Morozov,
  • Roman Volkov and
  • Pavel Strizhak

21 February 2023

This paper presents the experimental findings on fire containment and suppression by dropping CO2 hydrate granules and tablets on burning solid materials. We used the combustible materials typical of compartment fires—wood, linoleum, and cardboard—to...

  • Article
  • Open Access
2,667 Views
14 Pages

6 March 2023

Carbon dioxide sequestration by minerals containing calcium or magnesium is a safe and stable approach to reduce the concentration of CO2 in the atmosphere. In this work, the bioleaching method was applied to pretreat the anorthite, aiming to improve...

  • Article
  • Open Access
1,294 Views
19 Pages

Kinetics of the Process DAF-Culture Nannochloropsis oculata Remove Nutrients, Improve Water Quality, and Evaluate Rheological Parameters, Providing an Ecological Method for Treating Complex Wastewater

  • Solmaría Mandi Pérez-Guzmán,
  • Alejandro Alvarado-Lassman,
  • Eduardo Hernández-Aguilar,
  • Roger Emmanuel Sales-Pérez and
  • Juan Manuel Méndez-Contreras

16 July 2025

Population growth has led to an increased volume of wastewater from industrial, domestic, and municipal sources, contaminating aquatic bodies in the state of Veracruz. This study aimed to assess the efficacy of a water treatment system incorporating...

  • Article
  • Open Access
3 Citations
2,555 Views
12 Pages

27 February 2024

With the widespread application of plant remediation technology in the field of soil remediation, there was an increasing stock of hyperaccumulating plant tissues containing heavy metals, but there was currently a lack of effective disposal methods....

  • Article
  • Open Access
16 Citations
3,847 Views
17 Pages

31 December 2021

This research aims to examine the effect of carbonation on the strength properties and carbonation depth of ordinary Portland cement (OPC) concrete using two different water to cement ratios (w/c) and two different replacement percentages of natural...

  • Article
  • Open Access
15 Citations
6,346 Views
11 Pages

5 August 2020

Upgrading raw biogas to methane (CH4) is a vital prerequisite for the utilization of biogas as a vehicle fuel or the similar field as well. In this work, biogas yield from the anaerobic fermentation of food waste containing methane (CH4, 60.4%), carb...

  • Article
  • Open Access
13 Citations
3,932 Views
19 Pages

25 March 2023

The work is a continuation of the research on thermoplastic polyurethane (TPU) elastomers containing sulfur atoms which are incorporated into the polyurethane chain using aliphatic-aromatic chain extenders. These materials show some improved properti...

  • Article
  • Open Access
19 Citations
6,294 Views
9 Pages

19 June 2018

Nanogold is widely used in many areas of physics and chemistry due to its environment-sensitive plasmon resonance absorption. The immobilization of gold nanoparticles in highly porous silica aerogel offers an attractive alternative to liquid gold sol...

of 4