Treatment of Phenolic and Aromatic Amino Compounds in Polluted Waters by Photocatalytical Oxidation

2002 ◽  
Vol 5 (1) ◽  
Author(s):  
Sergei Preis ◽  
Marina Krichevskaya ◽  
Yelena Terentyeva ◽  
Anna Moiseev ◽  
Juha Kallas

AbstractImproper handling of rocket fuel residues at abandoned military bases has resulted in heavy pollution of the soil and groundwater with aromatic amino compounds. A similar phenomenon is observed with ash dumps in which solid waste from oil shale thermal treatment is disposed: the ash dump leachate is heavily polluted with phenolic and other compounds, resistant to biological treatment. Experimental research of photocatalytical oxidation (PCO) of both classes of substances and polluted waters was undertaken. The influence of different parameters - pH, concentration of substances to be oxidised, character of substances formed during the PCO, presence of inorganic admixtures, effect of OH

2020 ◽  
Vol 5 (4) ◽  
pp. 202-209
Author(s):  
Alexander Topal ◽  
◽  
Iryna Holenko ◽  
Luidmyla Haponych ◽  
◽  
...  

For the municipal solid waste (MSW) to be used in a proper way, it is necessary to implement clean technologies capable of thermal treatment of MSW and RDF in order to produce heat and electricity while meeting current ecological requirements. Nowadays, a number of technologies for MSW/RDF thermal treating are being used worldwide. Among them, the most proven technologies, applicable for industrial introduction, have been considered while analyzing their advantages/ disadvantages accounting for local conditions of Ukraine.


2021 ◽  
Vol 11 (9) ◽  
pp. 3939
Author(s):  
Krzysztof Pikoń ◽  
Nikolina Poranek ◽  
Adrian Czajkowski ◽  
Beata Łaźniewska-Piekarczyk

The purpose of the study presented in this text is to show the influence of COVID-19 on waste management systems and circular economy stream, and their impact on circular economy, particularly the economic impact of the pandemic on the waste management sector, impact on circular economy objectives’ implementation as well as additional challenges like the need for hygienization of waste streams during different implementation efforts, such as changes in the municipal solid waste market and different waste processes of their disposal. Additionally, some methods—such as thermal treatment—which seemed to be not fully aligned with the circular economy approach have advantages not taken into account before. Incineration of higher volume of waste affects the waste structure and will change some of the circular economy objectives. The analysis was carried out on the example of the Polish market.


2015 ◽  
Vol 16 (2) ◽  
pp. 3769-3782 ◽  
Author(s):  
Carlos Alvarez-Gallego ◽  
Luis Fdez-Güelfo ◽  
María de los Angeles Romero Aguilar ◽  
Luis Romero García

Fuel ◽  
2009 ◽  
Vol 88 (5) ◽  
pp. 955-958 ◽  
Author(s):  
Qin Wang ◽  
Jianhua Yan ◽  
Xin Tu ◽  
Yong Chi ◽  
Xiaodong Li ◽  
...  

2001 ◽  
Vol 29 (3) ◽  
pp. 259-267 ◽  
Author(s):  
Lee Põllumaa ◽  
Alla Maloveryan ◽  
Marina Trapido ◽  
Helgi Sillak ◽  
Anne Kahru

The environmental hazard was studied of eight soil and solid waste samples originating from a region of Estonia heavily polluted by the oil shale industry. The samples were contaminated mainly with oil products (up to 7231mg/kg) and polycyclic aromatic hydrocarbons (PAHs; up to 434mg/kg). Concentrations of heavy metals and water-extractable phenols were low. The toxicities of the aqueous extracts of solid-phase samples were evaluated by using a battery of Toxkit tests (involving crustaceans, protozoa, rotifers and algae). Waste rock and fresh semi-coke were classified as of “high acute toxic hazard”, whereas aged semi-coke and most of the polluted soils were classified as of “acute toxic hazard”. Analysis of the soil slurries by using the photobacterial solid-phase flash assay showed the presence of particle-bound toxicity in most samples. In the case of four samples out of the eight, chemical and toxicological evaluations both showed that the levels of PAHs, oil products or both exceeded their respective permitted limit values for the living zone (20mg PAHs/kg and 500mg oil products/kg); the toxicity tests showed a toxic hazard. However, in the case of three samples, the chemical and toxicological hazard predictions differed markedly: polluted soil from the Erra River bank contained 2334mg oil/kg, but did not show any water-extractable toxicity. In contrast, spent rock and aged semi-coke that contained none of the pollutants in hazardous concentrations, showed adverse effects in toxicity tests. The environmental hazard of solid waste deposits from the oil shale industry needs further assessment.


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