scholarly journals Removal of Polycyclic Aromatic Hydrocarbons (PAHs) from Produced Water by Ferrate (VI) Oxidation

Water ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 3132
Author(s):  
Tahir Haneef ◽  
Muhammad Raza Ul Mustafa ◽  
Khamaruzaman Wan Yusof ◽  
Mohamed Hasnain Isa ◽  
Mohammed J.K. Bashir ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Contact Time ◽  
Produced Water ◽  
Total Concentration ◽  
Oxygen Demand ◽  
Coefficient Of Determination ◽  
Operating Parameters ◽  
Efficient Treatment ◽  
Polycyclic Aromatic

Polycyclic aromatic hydrocarbons (PAHs) are mutagenic and carcinogenic contaminants made up of fused benzene rings. Their presence has been reported in several wastewater streams, including produced water (PW), which is the wastewater obtained during oil and gas extraction from onshore or offshore installations. In this study, ferrate (VI) oxidation was used for the first time for the treatment of 15 PAHs, with the total concentration of 1249.11 μg/L in the produced water sample. The operating parameters viz., ferrate (VI) dosage, pH, and contact time were optimized for maximum removal of PAHs and chemical oxygen demand (COD). Central composite design (CCD) based on response surface methodology (RSM) was used for optimization and modeling to evaluate the optimal values of operating parameters. PAH and COD removal percentages were selected as the dependent variables. The study showed that 89.73% of PAHs and 73.41% of COD were removed from PW at the optimal conditions of independent variables, i.e., ferrate (VI) concentration (19.35 mg/L), pH (7.1), and contact time (68.34 min). The high values of the coefficient of determination (R2) for PAH (96.50%) and COD (98.05%) removals show the accuracy and the suitability of the models. The results showed that ferrate (VI) oxidation was an efficient treatment method for the successful removal of PAHs and COD from PW. The study also revealed that RSM is an effective tool for the optimization of operating variables, which could significantly help to reduce the time and cost of experimentation.

A photobioreactor using Nannochloropsis oculata marine microalgae for removal of polycyclic aromatic hydrocarbons and sorption of metals in produced water

Chemosphere ◽  
2021 ◽  
pp. 130775
Author(s):  
Isadora Machado Marques ◽  
Adna Caroline Vale Oliveira ◽  
Olivia Maria Cordeiro de Oliveira ◽  
Emerson Andrade Sales ◽  
Ícaro Thiago Andrade Moreira
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Produced Water ◽  
Nannochloropsis Oculata ◽  
Marine Microalgae ◽  
Polycyclic Aromatic

A Correlation Study between Polycyclic Aromatic Hydrocarbons in Urumqi Snow and the Surrounding Environment

2013 ◽  
Vol 864-867 ◽  
pp. 1364-1368
Author(s):  
Yakup Parida ◽  
Eslamjan Diwani
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Solid Phase Extraction ◽  
Aromatic Hydrocarbons ◽  
Solid Phase ◽  
Total Concentration ◽  
Correlation Study ◽  
Phase Extraction ◽  
Purification Method ◽  
Surrounding Environment ◽  
Polycyclic Aromatic

Based on the principle of solid phase extraction and the purification method using Florida silica, sixteen various kinds of polycyclic aromatic hydrocarbons such as naphthalene, acenaphthene and fluorene were measured in Urumqi snow by means of HPLC. The results showed that the concentration of PAHs was different in different sampling sites in Urumqi. The total concentration of PAHs was in the range of 0.2883 ~ 8.814 µg/mL and the content of PAHs snow was higher than that in water, which indicated that the snow was polluted by organic matters to a certain degree and the pollution was not so serious compared with the groundwater. So the snow has a certain application value for life.

Cultivation of marine microalgae to remove polycyclic aromatic hydrocarbons from oil produced water

2020 ◽  
Vol 20 (2020) ◽  
pp. 508-509
Author(s):  
Isadora Machado Marques ◽  
Adna Caroline Vale Oliveira ◽  
Antônio Fernando Queiroz ◽  
Olivia Maria Cordeiro De Oliveira ◽  
Emerson Andrade Sales ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Produced Water ◽  
Marine Microalgae ◽  
Polycyclic Aromatic

scholarly journals Magnetic hybrid support for ultrasound-assisted magnetic solid-phase extraction of polycyclic aromatic hydrocarbons from produced water

2019 ◽  
Vol 146 ◽  
pp. 1195-1203 ◽  
Author(s):  
Vinícius Crispim Lima de Barros Caetano ◽  
Graziele da Costa Cunha ◽  
Rhayza Victoria Matos Oliveira ◽  
Marcelo da Rosa Alexandre ◽  
Luciane Pimenta Cruz Romão
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Solid Phase Extraction ◽  
Aromatic Hydrocarbons ◽  
Produced Water ◽  
Solid Phase ◽  
Magnetic Solid Phase Extraction ◽  
Phase Extraction ◽  
Polycyclic Aromatic ◽  
Magnetic Solid ◽  
Ultrasound Assisted

scholarly journals Variability of polycyclic aromatic hydrocarbons and their oxidative derivatives in wintertime Beijing, China

2019 ◽  
Vol 19 (13) ◽  
pp. 8741-8758 ◽  
Author(s):  
Atallah Elzein ◽  
Rachel E. Dunmore ◽  
Martyn W. Ward ◽  
Jacqueline F. Hamilton ◽  
Alastair C. Lewis
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Gas Phase ◽  
Aromatic Hydrocarbons ◽  
Total Concentration ◽  
Diagnostic Ratios ◽  
Strong Positive Correlation ◽  
Night Time ◽  
Naphthalic Anhydride ◽  
Positive Correlation ◽  
Polycyclic Aromatic

Abstract. Ambient particulate matter (PM) can contain a mix of different toxic species derived from a wide variety of sources. This study quantifies the diurnal variation and nocturnal abundance of 16 polycyclic aromatic hydrocarbons (PAHs), 10 oxygenated PAHs (OPAHs) and 9 nitrated PAHs (NPAHs) in ambient PM in central Beijing during winter. Target compounds were identified and quantified using gas chromatography–time-of-flight mass spectrometry (GC-Q-ToF-MS). The total concentration of PAHs varied between 18 and 297 ng m−3 over 3 h daytime filter samples and from 23 to 165 ng m−3 in 15 h night-time samples. The total concentrations of PAHs over 24 h varied between 37 and 180 ng m−3 (mean: 97±43 ng m−3). The total daytime concentrations during high particulate loading conditions for PAHs, OPAHs and NPAHs were 224, 54 and 2.3 ng m−3, respectively. The most abundant PAHs were fluoranthene (33 ng m−3), chrysene (27 ng m−3), pyrene (27 ng m−3), benzo[a]pyrene (27 ng m−3), benzo[b]fluoranthene (25 ng m−3), benzo[a]anthracene (20 ng m−3) and phenanthrene (18 ng m−3). The most abundant OPAHs were 9,10-anthraquinone (18 ng m−3), 1,8-naphthalic anhydride (14 ng m−3) and 9-fluorenone (12 ng m−3), and the three most abundant NPAHs were 9-nitroanthracene (0.84 ng m−3), 3-nitrofluoranthene (0.78 ng m−3) and 3-nitrodibenzofuran (0.45 ng m−3). ∑PAHs and ∑OPAHs showed a strong positive correlation with the gas-phase abundance of NO, CO, SO2 and HONO, indicating that PAHs and OPAHs can be associated with both local and regional emissions. Diagnostic ratios suggested emissions from traffic road and coal combustion were the predominant sources of PAHs in Beijing and also revealed the main source of NPAHs to be secondary photochemical formation rather than primary emissions. PM2.5 and NPAHs showed a strong correlation with gas-phase HONO. 9-Nitroanthracene appeared to undergo a photodegradation during the daytime and showed a strong positive correlation with ambient HONO (R=0.90, P < 0.001). The lifetime excess lung cancer risk for those species that have available toxicological data (16 PAHs, 1 OPAH and 6 NPAHs) was calculated to be in the range 10−5 to 10−3 (risk per million people ranges from 26 to 2053 cases per year).

scholarly journals Evaluation of polycyclic aromatic hydrocarbons in Achyrocline Satureioides (Marcela) and its infusion

2020 ◽  
Vol 12 (1) ◽  
pp. 531-543
Author(s):  
Pedro José Sanches Filho ◽  
Julia Arduim ◽  
Glauco Rasmussen Betemps ◽  
Gabriela Oliveira Andrade ◽  
Ricardo Correa da Silva da Silva
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Environmental Protection Agency ◽  
Solid Phase ◽  
Total Concentration ◽  
The United States ◽  
A Value ◽  
Tea Infusions ◽  
Polycyclic Aromatic ◽  
Achyrocline Satureioides

This study evaluates the presence and levels of polycyclic aromatic hydrocarbons (PAHs) in Achyrocline Satureioides (inflorescences and infusions) using extraction under ultrasound accompanied by clean up with solid phase extraction (SPE) and gas chromatography coupled to mass spectrometry. Sixteen priority PAHs were listed as priority contaminants by the United States Environmental Protection Agency and PAHs (Benzo(a)Anthracene, Chrysene, Benzo(b)Fluoranthene, Benzo(a)Pyrene) were chosen as indicators by the European Food Safety Agency for the presence of PAHs in food. The HPAs concentrations ranged from 48.1 µg Kg-1 ± 1.4% to 48.8 µg Kg-1 ± 1.9% in Achyrocline Satureioides inflorescences. The total concentration in infusions of PAHs was 2.5 µg L-1 ± 6.3%. The sum of the priority PAHs in Achyrocline Satureioides samples ranged from 126.8 µg Kg-1 ± 13.6% and 218.9 µg Kg-1 ± 16.1% and infusion had a value of 10.0 µg L-1 ± 8.1%. The PAH concentrations in tea infusions are lower when compared with other food matrices, but the migration of these compounds for tea is high, resulting in levels that may cause damage to health.

scholarly journals Concentration Assessment And Source Evaluation of Polycyclic Aromatic Hydrocarbons (PAHs) In Soil And Crops of The Agro-Industrial Tobacco Production Area of Igboho, Nigeria

2021 ◽  
Author(s):  
Taofik Adewale Adedosu ◽  
Okanlawon John Ajibade ◽  
Adeniyi Kayode Omotayo ◽  
Haleema Omolola Adedosu ◽  
Idris Mufutau
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Environmental Pollution ◽  
Aromatic Hydrocarbons ◽  
Total Concentration ◽  
Flame Ionization ◽  
Tobacco Production ◽  
Global Environmental ◽  
Toxicity Potential ◽  
Polycyclic Aromatic ◽  
Production Area

Abstract The contribution of tobacco smoking and cigarette butts to global environmental pollution has been given significant attention. However, little is known about tobacco-related agricultural activities on environmental pollution by polycyclic aromatic hydrocarbons (PAHs). In this study, the spatial distributions, composition, source, and toxicity potential of polycyclic aromatic hydrocarbons (PAHs) in soil and food crops within the vicinity of the agro-industrial tobacco production area of Igboho, Nigeria was investigated. Soil and food crop (Zea mays, Dioscorea alata, and Manihot esculenta) samples collected from the tobacco curing site and the surrounded farmlands were analyzed for the PAHs concentrations. The identification and quantification of priority PAHs in the samples were carried out using a gas chromatograph equipped with a flame-ionization detector. The total concentration of the priority PAHs in the soil ranged between 136.70 ng.g-1 to 889.30 ng.g-1. The total concentration of carcinogenic PAHs ranged from 6.07 ng.g-1 to 321.04 ng.g-1, and the total concentration of toxic PAHs ranged from 6.27 ng.g-1 to 254.37 ng.g-1. The PAHs level was highest in crops from farmlands closest to the tobacco curing site. The distribution of PAHs ring size is in the order of 6-rings ˃ 4-rings ˃5-rings ˃ 3-rings ˃ 2, and the diagnostic indices showed that the sources of PAHs in the samples were mainly pyrogenic and associated with tobacco curing activities in the area.

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