Petroleum hydrocarbon status of the Buffalo River Estuary in East London, South Africa, was evaluated from January to May, 2016. Surface water and sediment samples were collected from five points in the estuary and extracted using standard methods. The extracts were subsequently analyzed by gas chromatographyflame ionization detection. Results showed that total petroleum hydrocarbon (TPH ...
Petroleum has always been a very important energy source for humans. However, during the process of extraction, storage, transportation, and use of petroleum, accidental leakage often causes soil pollution [1,2,3].Aliphatic, cycloaliphatic, and aromatic hydrocarbons are mainly included in petroleum components, which were collectively referred to as total petroleum hydrocarbons (TPH).
The present study reports the level of total petroleum hydrocarbon (TPH) in 27 commercially important fish, crustaceans and cephalopods from Orissa coast, Bay of Bengal to provide the baseline data for oil contamination in marine biota. The results showed significant differences in the TPH concentra .
Petroleum products can be made up of hundreds of individual petroleum hydrocarbons. TPH is a value that represents the amount of petroleum hydrocarbons in a given sample, as previously presented in Section There are far more than 250 individual chemicals that are known as petroleum hydrocarbons and there is an inherent complexity involved in chemically and physically describing and ...
Oilbased drilling cuttings (OBDC) contain a large amount of total petroleum hydrocarbon (TPH) pollutants, which are hazardous to the environment. In this study, Fe2+activating hydrogen peroxide (Fe2+/H2O2), peroxymonosulfate (Fe2+/PMS), and peroxydisulfate (Fe2+/PDS) advanced oxidation processes (AOPs) were used to treat OBDC due to the difference in the degradation capacity of TPH caused by ...
On this page: Withdrawal of approved methods employing CFC113. Recommended method for testing oil and grease and total petroleum hydrocarbons. EPA Method Source for n hexane for use with EPA Method 1664A. Use of repetitive amounts of silica gel with EPA Method 1664A. Reports on replacement of Freon with hexane as the extraction solvent.
The effects of soil microparticles and micropores on the release of total petroleum hydrocarbons (TPH) were investigated using longterm weathered, TPHcontaminated soil samples. The TPH concentrations were analyzed using various extraction schemes (, total extraction, weak extraction, solvent extraction with or without ultrasound). The particle size distribution (<2 mm, mm, <0 ...
![Guidance for Assessing Petroleum Hydrocarbons in Soil [PDF]](/qw25com/262.jpg)
(2) Total petroleum hydrocarbons (TPH) (TPHgasoline range organics (G), TPHdiesel range organics (D), and/or TPHoil range organics (O)) and (3) Evaluate TPH soil saturation concentrations. The indicator compounds required for analysis are dependent on the source of the petroleum product and are summarized in Table 1.
Specific contaminants that are components of TPH, such as BTEX (benzene, toluene, ethylbenzene, and xylene), nhexane, jet fuels, fuel oils, and mineralbased crankcase oil, have been studied by ATSDR and a number of toxicological profiles have been developed on individual constituents and petroleum products.
Adewuyi et al. (Citation 2011) reported the mean concentration of total petroleum hydrocarbons in surface water as ± mg/L, which was higher than the reported concentrations in this study. Suratman (Citation 2013) reported the concentration of TPH on the surface river water ranged from to µg/L (mean ± µg/L). This ...
The optimization of the washing conditions, such as stirring speed, liquidsolid ratio, number of washing stages, and surfactant concentration, was carried out using a design of experiments (DOE) software, so that the maximum extraction efficiency of total petroleum hydrocarbons (TPHs) was achieved. A TPH removal efficiency of ( ± ...
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Total petroleum hydrocarbons (TPH) is a term used to describe a large family of several hundred chemical compounds that originally come from crude oil. Crude oil is used to make petroleum products, which can contaminate the environment.
A highefficient method for determining the total petroleum hydrocarbon (TPH) was established by gas chromatographyflame ionization detection, coupled with an efficient 10 m short chromatographic column; the analyzing period was narrowed to 5 mins. The limits of detection of the method included,, and mg/kg, and the corresponding limits of quantification reached,, and ...
WHAT IS TOTAL PETROLEUM HYDROCARBON OR TPH? TPH is defined by the analytical method that is used to measure it. Conventional TPH measurement techniques quantify only those hydrocarbons that are extracted by the particular method.
Biodegradation has been considered as an ideal technique for total petroleum hydrocarbon (TPH) contamination, but its efficiency is limited by its application in the field. Herein, an original TPHdegrading strain, SCYY5, was isolated from contaminated oil sludge and identified as Acinetobacter sp. by 16S rDNA sequence analysis. The biological function of the isolate was investigated by heavy ...
A Ciboria sp. strain (Phylum Ascomycota) was isolated from hydrocarbonpolluted soil of an abandoned oil refinery in Italy. The strain was able to utilize diesel oil as a sole carbon source for growth. Laboratoryscale experiments were designed to evaluate the use of this fungal strain for treatment of the polluted soil. The concentration of total petroleum hydrocarbons (TPH) in the soil was ...
Maximum TPH degradation could be observed in the set amended with XHN consortium and 30 mM nitrate (BSBAXHN). The initial TPH of 320 ± 25 g kg −1 was reduced to 46 g kg −1 in BSBAXHN setup and 112 g kg −1 in BSBAXLN. In anaerobic bioremediation setups (BAAHN and BSBAAHN), rate and extent of TPH degradation was inhibited (36% in 30 days).
Total petroleum hydrocarbons and THC were analyzed using Gas Chromatography (GCFID) and UVVISIBLE spectrophotometer respectively. The results obtained from TPH analysis indicates that; 15, ...
The term "Total petroleum hydrocarbons" (TPH) is used to describe a complex mixture of petroleumbased hydrocarbons primarily derived from crude oil. Those compounds are considered as persistent organic pollutants in the terrestrial environment. A wide array of organic amendments is increasingly used for the remediation of TPHcontaminated ...
Although methods for evaluating TPH risks in soil and groundwater are relatively routine, TPH is not generally addressed in PVI risk assessments (Bowers Smith 2014).Only the US Environmental Protection Agency (US EPA 2015b), a few US states (HI, LA, MA, MO, OR and WA) and Australia have vapour intrusion screening criteria (soilgas RBSLs) for TPH fractions or total (bulk) TPH (see Table 1).
This chapter summarizes useful background materials dealing with petroleum production and a range of common products derived from petroleum contaminants that could be documented through TPH testing at NPL sites. The chapter concludes with a discussion of acceptable disposal practices for petroleum products. In conjunction with materials in Chapter 5, the section on disposal summarizes special ...
Moreover, further total petroleum hydrocarbons (TPH) analysis performed 3 years after the treatment confirmed that their concentrations have remained low (735 mg kg −1) all over the site. To the author's knowledge, this is among the first studies to report large scale successful bioaugmentation of TPHcontaminated soil in Singapore.
In this review, studies on petroleum sludge composting have been investigated in the aim to understand the sludge biotransformation and highlighting the points that need more attention. Total petroleum hydrocarbons (TPH) are the major contaminants present in the petroleum sludge they ranged from to g/kg of dry matter, indicating a potential risk to the environment if not correctly ...
The biodegradation efficiency of total petroleum hydrocarbon (TPH) was increased from % in the contaminated soil to % and % in isolated consortium and isolated consortium g sophorolipid (SL)/kg dry soil, respectively. The halflife of TPH degradation process was decreased from d in the isolated consortium reactor to ...
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