Temat: remediation - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Evaluating the Effect of the Approaching Electrode on the Migration for Metal Ions through the Electro-Kinetic Technique for Contaminated Soil
Autorzy:: Thamer, Zeina
Khalil, Amal H.
Powiązania:: https://bibliotekanauki.pl/articles/2202378.pdf
Data publikacji:: 2023
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: zinc
electrokinetic
remediation
approached anode
Opis:: In this study, three experiments using the fixed anode technique and approached anode technique were carried out. The first experiment (EK-1) used distilled water as leaching solution (purging solution) at the anode and cathode chamber under voltage gradient was equal to 1.5 V/cm. In the second and third experiments, a solution enhanced with 1M acetic acid (AA) was used as catholic solution. The results indicate that residual concentration of Zn+2 decreases, beginning with an initial value of 850 mg/kg in all portions of soil sample EK-1, EK-2, in addition to EK-3. It seems that the residual concentration of EK-3 (approached anode technique) was lower than that of EK-1 and EK-2 in identical portions.
Źródło:: Journal of Ecological Engineering; 2023, 24, 2; 72--80
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Thermal Recycling of Bentonite Waste as a Novel and a Low-Cost Adsorbent for Heavy Metals Removal
Autorzy:: Shubber, Mukhtar D. H.
Kebria, Daryoush Yousefi
Powiązania:: https://bibliotekanauki.pl/articles/24201677.pdf
Data publikacji:: 2023
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: bentonite
heavy metal
isotherm
thermal remediation
hazardous waste
Opis:: The objectives of this study are the thermal remediation of bentonite waste to convert non-hazardous material, and the use of the obtainedthermal recycling bentonite waste (TRBW) as a novel low-cost adsorbent for the removal of heavy metals from aqueous solution using the batch system. The origin of bentonite waste is a by-product from plants of spent engine oil recycling [PSEOR]. It was remediated in two stages, directly burning and in the electrical furnace at 700 °C for 100 minutes to eliminate oil residues and impurities. The tests of XRD, BET, FTIR, EDX, and SEM were accomplished to identify the chemical and physical characteristics of TRBW. After then, the examination of the ability of TRBW to adsorption of the fiveheavy metals (Zn, Ni, Cd, Cr, and Pb) with different experimental parameters such as initial concentration, adsorbent dose, temperature, pH, and contact time. Different models of isotherm, kinetic, and thermodynamic were utilized andthe results indicate that the nature of heavy metals adsorption onto TRBW was homogeneous. According to the maximum adsorption capacities, the metals ranked as Pb> Cd> Zn> Cr> Ni, and adsorption capacities were 94.97, 73.85, 39.56, 38.34, and 36.33 mg/g, respectively.
Źródło:: Journal of Ecological Engineering; 2023, 24, 5; 288--305
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Study of Oil Migration Processes in Meadow Soils
Autorzy:: Sivkov, Yuriy
Nikiforov, Artur
Fefilov, Nikolay
Powiązania:: https://bibliotekanauki.pl/articles/123288.pdf
Data publikacji:: 2019
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: soil contamination
migration of pollutants
total petroleum hydrocarbon
remediation
ecology
Opis:: The paper presents the results of field and laboratory studies aimed at studying the processes of oil transformation in the soil under the influence of natural biological processes during a two-year period on artificially created old spills. The soil of the study area was characterized as meadow. The high toxic effect of oil was confirmed, which was expressed in the complete extinction of soil flora and fauna. Despite the low oil content in the soil (less than 5%), soil self-purification processes were not observed. Moreover, the high sorption properties of the soil, the violation of the water regime and the lack of aeration led to the “conservation” of oil and significantly slowed down the natural processes of its biodegradation. This was confirmed by a slight change in the content of oil products a year after the start of the experiment, as well as the presence of free oil in the pore space of the studied soil.
Źródło:: Journal of Ecological Engineering; 2019, 20, 5; 23-26
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Carboxymethyl Cellulose Nanoadsorbent for Remediation of Polluted Water
Autorzy:: Khairiah, Khairiah
Frida, Erna
Sebayang, Kerista
Sinuhaji, Perdinan
Humaidi, Syahrul
Ridwanto
Fudholi, Ahmad
Marwoto, Putut
Powiązania:: https://bibliotekanauki.pl/articles/2202338.pdf
Data publikacji:: 2023
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: banana peel
activated carbon
chitosan
magnetic
nanoadsorbent
remediation of polluted water
Opis:: The development of nanoadsorbents for remediation of polluted water in order to obtain clean and healthy water quality has been carried out, namely the incorporation of chitosan, magnetic, and activated carbon materials. The activated carbon used is the result of the synthesis of banana peel waste nanocrystals, while the magnetic is Fe3O4. The method used in this study is an experimental method with coprecipitation through several stages, namely (1) magnetic synthesis of Fe3O4 by thecoprecipitation method, (2) preparation of chitosan solution, (3) synthesis of activated carbon nanocrystals from banana peel waste by the milling process, (4) merger of the three materials, and (5) characterization with SEM/EDX, XRD, FTIR, BET, PSA, TGA, and AAS to test the performance of the material against polluted water. The study found that 210 minutes was the optimal time for the heavy metal ions Fe, Mn, Zn, and Pb to adsorption.The best sample was sample S4 with a ratio of 1:2:2 with adsorption for Zn 92.43%, Fe 95.44%, Mn 89.54%, and Pb 84.38%. For the heavy metal ions: Mn 5624 mg/g, Fe 5849.4 mg/g, Zn 4894.22 mg/g, and Pb 468.2 mg/g, the Langmuir model was used. The adsorption kinetics showed that the reaction order for Pb, Mn, Zn, and Fe ions varied with pseudo-first order and pseudo-second order. Carboxymethyl cellulose nanoadsorbents are effective in remediating the water contaminated with heavy metals, such as Pb, Mn, Zn, and Fe, meeting the environmental health quality standards for water media for sanitation hygiene purposes.
Źródło:: Journal of Ecological Engineering; 2023, 24, 1; 336--348
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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