scholarly journals Pyrene biodegradation capability of two different microalgal strains

2018 ◽  
Keyword(s):  
Molecular Weight ◽  
Aromatic Hydrocarbons ◽  
Biological Treatment ◽  
Growth Parameters ◽  
Dry Weight ◽  
The Other ◽  
Total Chlorophyll ◽  
Incubation Condition ◽  
Chlorella Sp ◽  
Polycyclic Aromatic

<p>Biological treatment is one of the most preferable strategies to complete and safe removal of pollutants. Pyrene (PY) is the first member of high molecular weight polycyclic aromatic hydrocarbons (HMW-PAHs) that represents various concerns to biological life and human health. In this study, two different algal strains exhibited different capability to degrade PY along 30 days of incubation in the light. Dry weight, total chlorophyll, and carotenoids were growth parameters that were determined to detect robust of two algal strains to get used of PY as a source of carbon. Oscillatoria sp. could degrade 95% while Chlorella sp. could degrade 78.71 % of PY (50 mg/L) after 30 days of incubation. Both algal strains could completely remove 10 and 30 mg/L of PY. On the other hand, the degradation capability of Oscillatoria sp. was significantly exceeded than Chlorella sp. under the same incubation condition and at (50 and 100 mg/L) of PY.</p>

scholarly journals Polycyclic Aromatic Hydrocarbons (PAHs) in water of Al-Kahlaa River in Missan Province, Iraq

2016 ◽  
Vol 21 (1) ◽  
pp. 1
Author(s):  
Salih Hassan Jazza ◽  
Abdul Hussain Y. Al-Adhub ◽  
Hamid T. Al-Saad
Keyword(s):  
Molecular Weight ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Dry Weight ◽  
Reference Station ◽  
Low Molecular Weight ◽  
Treatment Unit ◽  
Tigris River ◽  
Polycyclic Aromatic ◽  
Total Concentrations

The present study was performed to have knowledge of Polycyclic Aromatic  Hydrocarbonspollution status in water. The samples were collected during two seasons (winter and summer 2012 ,2013) from four different stations) Al-Magideh, Treatment unit, Al-Husaichi and Al-Zubair) distributed along Al-KahlaaRiver in Missan province, in addition to reference station lies on the Tigris river before  25 Km  from entering to Amara city. The concentrations of PAHs were determined in by using capillary Gas Chromatography. Results of the present  study revealed that the total concentrations of PAHs  in dissolved fraction  ranged from 0.739 ng.l-1 in Reference station to 1.974 ng.l-1 in Treatment unit during winter, and from 0.300 ng.l-1 in Reference station to 1.125 ng.l-1 in Treatment unit during summer, while in the particulate fraction they varied from 0.79 ng.g-1 dry weight in Reference station to 24.42  ng.g-1 dry weight in Treatment unit during winter, and from 4.369 ng.g-1 dry weight in Reference station to 10.545 ng.g-1 dry weight in Al-Husaich during summer. It had been noticed that there were a predominance of high molecular weight PAHs on low molecular weight, while  BaA/(BaA+Chr) ratio in water ranged from 0.218 to 0.804. InP/(InP+BghiP) ratio ranged between 0 and 0.578,whereas Fl/Pyratio ranged between 0.150 and 2 ,this give an indication of  the origin  of PAHs compounds in water which were mainly pyrogenic and few from them  petrogenic. Keywords: polycyclic aromatic hydrocarbons, PAHs, water, pollution

scholarly journals Polycyclic Aromatic Hydrocarbons (PAHs) in Muscles of Two Commercial Fish Species from Al-Kahlaa River in Missan Governorate, Iraq

2015 ◽  
Vol 20 (3) ◽  
pp. 121 ◽  
Author(s):  
Salih Hassan Jazza ◽  
Abdul-Hussain Y. Al-Adhub ◽  
Hamid T. Al-Saad
Keyword(s):  
Molecular Weight ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Fish Species ◽  
Aromatic Hydrocarbons ◽  
Dry Weight ◽  
Commercial Fish ◽  
Polycyclic Aromatic ◽  
Liza Abu ◽  
Oil Company ◽  
Total Concentrations

Al-Kahlaa River is one of main tributaries of the Tigris River in Missan city and rises from northwest side of Amara city and continues to flow in the direction to the east of city center. Two commercial fish species (Liza abu and Carassius auratus) were collected seasonally (autumn, winter, spring and summer) during period from 2012 to 2013 from Al-Kahlaa River in Missan governorate. The concentrations of Polycyclic Aromatic Hydrocarbons (PAHs) in fish muscles were determined in the laboratories of Nihran Omer (South Oil Company in Basrah province), using Gas Chromatography. Total concentrations of PAHs in muscles of L. abu ranged between 2.301 and 16.661 ng.g-1 dry weight during winter and summer respectively and in C. auratus between 1.095 and  8.675 ng.g-1 dry weight during winter and summer, respectively. Results of this study revealed that high molecular weight of PAHs were more than low molecular weight in both fish species, and according to ratios of Low molecular weight Polycyclic Aromatic Hydrocarbons (LPAHs) to High molecular weight Polycyclic Aromatic Hydrocarbons (HPAHs), Benzo(a) Anthracene /(Benzo(a) Anthracene+ Chrysene) BaA/(BaA+Chr),Indeno (1,2,3-cd) pyrene /(Indeno (1,2,3-cd) pyrene + Benzo (ghi) perylene) InP/(InP+BghiP) and Fluoranthene/Pyrene (Fl/Py), they certainly reflected that the PAHs sources in both species are pyrogenic as a main sources  and petrogenic as a small part. Also results of this study revealed the presence of seasonal variations in total concentrations of   PAHs in both fish species. The study area was generally contaminated with hydrocarbons and continuous consumption of food from this area may pose public health hazards. Keywords: polycyclic aromatic hydrocarbons, PAHs, fish, pollution Al-Kahlaa adalah salah satu anak sungai utama Sungai Tigris di kota Missan dari sisi barat laut kota Amara dan terus mengalir ke arah ke timur dari pusat kota. Dua spesies ikan komersial (Liza abu dan Carassius auratus) diperoleh pada musim berbeda (gugur, dingin, semi dan panas) selama periode 2012-2013 dari Al-Kahlaa. Konsentrasi polisiklik aromatik hidrokarbon (PAH) pada otot ikan dianalisis di laboratorium Nihran Omer (South Oil Company di provinsi Basrah), menggunakan Gas Chromatography. Total konsentrasi PAH pada otot L. abu berkisar antara 2,301 dan 16,661 ng.g-1 berat kering pada musim dingin dan musim panas. Sedangkan pada C. auratus antara 1,095 dan 8,675 ng.g-1 berat kering pada musim dingin dan musim panas. Hasil penelitian ini menunjukkan bahwa berat molekul tinggi PAH lebih dari berat molekul rendah pada kedua spesies ikan, dan menurut rasio berat molekul rendah polisiklik aromatik hidrokarbon (LPAHs) untuk berat molekul tinggi polisiklik aromatik hidrokarbon (HPAHs), Benzo (a ) Anthracene / (Benzo (a) Anthracene + Chrysene) BAA / (BAA + Chr), Indeno (1,2,3-cd) pyrene / (Indeno (1,2,3-cd) pyrene + Benzo (ghi) perylene) InP / (InP + BghiP) dan fluoranthen / Pyrene (Fl/Py), hal ini mencerminkan bahwa sumber PAH di kedua spesies adalah pirogenik sebagai sumber utama dan petrogenic sebagai bagian kecil. Hasil penelitian ini juga mengungkapkan adanya variasi musiman total konsentrasi PAH di kedua spesies ikan. Daerah penelitian umumnya terkontaminasi dengan hidrokarbon sehingga konsumsi makanan dari daerah ini secara berkelanjutan dapat menimbulkan bahaya kesehatan masyarakat. Kata kunci: polisiklik aromatik hidrokarbon, PAHs, ikan, polusi

Potential Contribution of Nutrients and Polycyclic Aromatic Hydrocarbons from the Creeks of Cootes Paradise Marsh

1996 ◽  
Vol 31 (3) ◽  
pp. 485-504 ◽  
Author(s):  
Patricia Chow-Fraser ◽  
Barb Crosbie ◽  
Douglas Bryant ◽  
Brian McCarry
Keyword(s):  
Aromatic Hydrocarbons ◽  
Laboratory Experiments ◽  
Dry Weight ◽  
Common Source ◽  
Potential Contribution ◽  
Nitrogen And Phosphorus ◽  
Engine Combustion ◽  
Polycyclic Aromatic ◽  
High Concentrations ◽  
Derivatives Of

Abstract During the summer of 1994, we compared the physical and nutrient characteristics of the three main tributaries of Cootes Paradise: Spencer, Chedoke and Borer’s creeks. On all sampling occasions, concentrations of CHL α and nutrients were always lowest in Borer’s Creek and highest in Chedoke Creek. There were generally 10-fold higher CHL α concentrations and 2 to 10 times higher levels of nitrogen and phosphorus in Chedoke Creek compared with Spencer Creek. Despite this, the light environment did not differ significantly between Spencer and Chedoke creeks because the low algal biomass in Spencer Creek was balanced by a relatively high loading of inorganic sediments from the watershed. Laboratory experiments indicated that sediments from Chedoke Creek released up to 10 µg/g of soluble phosphorus per gram (dry weight) of sediment, compared with only 2 µg/g from Spencer Creek. By contrast, sediment samples from Spencer Creek contained levels of polycyclic aromatic hydrocarbon that were as high as or higher than those from Chedoke Creek, and much higher than those found in Borer’s Creek. The distribution of normalized PAH concentrations suggests a common source of PAHs in all three tributaries, most likely automobile exhaust, since there were high concentrations of fluoranthene and pyrene, both of which are derivatives of engine combustion.

Polycyclic Aromatic Hydrocarbons (PAHs) in Sediments of the Brisbane River (Australia) – Preliminary Results

1989 ◽  
Vol 21 (2) ◽  
pp. 161-165 ◽  
Author(s):  
S. I. Kayal ◽  
D. W. Connell
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
River Estuary ◽  
Dry Weight ◽  
Weight Basis ◽  
Sediment Samples ◽  
Preliminary Results ◽  
Treated Sewage ◽  
Polycyclic Aromatic ◽  
Petroleum Refineries

Results of the analysis of twenty-three composite sediment samples revealed that PAHs are widely distributed in the Brisbane River estuary. Mean concentrations for individual compounds, on a dry weight basis, ranged from 0.03 µg/g for dibenz [ah] anthracene to 2.34 µg/g for fluoranthene. Observed PAH assemblages were rich in compounds having pyrolytic origins. However, the presence of petroleum derived compounds was indicative of the importance of petroleum as a PAH source in the estuary. Petroleum refineries, a coal loading terminal and a major treated sewage outfall located at the mouth were not indicated as major contributing sources of PAH pollution in the estuary.

Continuous Ozonation of Polycyclic Aromatic Hydrocarbons in Oil/Water-Emulsions and Biodegradation of Oxidation Products

1999 ◽  
Vol 40 (4-5) ◽  
pp. 107-114 ◽  
Author(s):  
A. Kornmüller ◽  
U. Wiesmann
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Biological Treatment ◽  
Reaction Rate ◽  
Oxidation Products ◽  
Direct Reaction ◽  
Biological Degradation ◽  
Polycyclic Aromatic ◽  
Oil Water ◽  
Treatment Step

The continuous ozonation of polycyclic aromatic hydrocarbons (PAH) was studied in a two stage ozonation system followed by serobic biological degradation. The highly condensed PAH benzo(e)pyrene and benzo(k)fluoranthene were oxidized selectiely in synthetic oil/water-emulsions. The influence of the ozone mass transfer gas-liquid on the reaction rate of benzo(k)fluoranthene was studied for process optimization. The dissolved ozone concentration is influenced by temperature to a higher degree than the reaction rate of PAH. In dependence on pH, PAH oxidation occurs by a direct reaction with ozone inside the oil droplets. Two main ozonation products of benzo(e)pyrene were quantified at different retention times during ozonation and their transformation could be shown in the biological treatment step.

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