نتایج جستجو برای: total petroleum hydrocarbon tph
تعداد نتایج: 832727 فیلتر نتایج به سال:
Although mass spectrometry has been studied extensively in the past 50 years for analysis of petroleum and other fossil fuels, comprehensive characterization of total petroleum composition across a wide boiling range remains a challenge. In this work, we report our efforts in combining GC separation, field Ionization, and time-of-flight high-resolution mass spectrometry (GC-FI-TOF HRMS) for det...
The aim of the study is to isolate indigenous bacterial species which have ability degrade crude oil. Samples were collected from an oil polluted site in Ejama-Ebubu Eleme Rivers state. samples taken five spot (A-E), depth 0-15 (A1– E1) and 15-30 (A2– E2) sterile polyethylene bags, using appropriate equipment, then laboratory for analysis, Physicochemical parameters such as pH, nitrate, sulphat...
Crude oil-polluted environment serves as a reservoir of microbial species, especially bacteria. Determining these bacterial genera is great benefit to environmental assessment and recovery. This study evaluated the bacteria selected heavy metals present in crude sites K-dere community, Ogoniland. The was carried out at Department Microbiology, University Port Harcourt, Rivers State, Nigeria. so...
In this study, biochar (BC) was prepared from bagasse and then successfully loaded with nanoscale zerovalent iron (nZVI) to produce BC-supported nZVI, termed nZVI@BC. Satisfactory results were obtained using a nZVI@BC-activated persulfate (PS), nZVI@BC/PS, remediate total petroleum hydrocarbons (TPH)-contaminated water. The effects of three influencing factors—the dosage nZVI@BC, DnZVI@BC, the ...
Recent university research has shown that a compost system can reduce storm runoff, sediment and nutrient loss, and increase vegetation and soil quality parameters relative to industry standard best management practices. State departments of transportation and construction companies have reported positive results in using compost as a filter media within filter socks. Compost used as a sediment...
In this study the full-scale operation of soil flushing with air sparging to improve the removal efficiency of petroleum at depths of less than 7 m at a military site in Korea was evaluated. The target area was polluted by multiple gasoline and diesel fuel sources. The soil was composed of heterogeneous layers of granules, sand, silt and clay. The operation factors were systemically assessed us...
The stimulation of the microbial population by a more bioavailable supplementary carbon source and by a surfactant pretreatment was studied in petroleum hydrocarbon-polluted soils bioremediation. Two types of soils were used, Soil A which had been recently polluted and the aged Soil B. They contained 52.4 and 50.4 g of total petroleum hydrocarbons per kg of dry soil, respectively. The effect of...
Abstract This paper studied the adsorption of chemical oxygen demand (COD), oil and turbidity produced water (PW) which accompanies production reconnaissance after treating utilizing powdered activated carbon (PAC), clinoptilolite natural zeolite (CNZ) synthetic type X (XSZ). Moreover, deals with comparison pollutant removal over different adsorbents. Adsorption was executed in a batch system. ...
Background: Water plays an essential role in supporting life on earth and sea worldwide, requiringclean, safe, high quality and sustainable resources. Nowadays, many water resources have been contaminatedwith toxic compounds originating from petroleumdue to economical and industrial developments. There is anurgent need to clean up the waters with environmentally friendlyand inexpensive methods...
AIMS To assess mortality and cancer morbidity in Canadian petroleum workers and explore exposure-response relations for specific petroleum agents. METHODS A total of 25 292 employees hired between 1964 and 1994 were linked to the Canadian tumour registry and national mortality database. Exposure-response trends were assessed for hydrocarbon solvents/fuels, hydrocarbon lubricants, petroleum co...
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