Soxhlet-based extraction method was applied to determine seed oil content with petroleum ether as the organic solvent in 2012 based on a seed dry weight.
Oil content was determined as subtraction after extraction with petroleum ether.
An adequate medium design and mixing and aeration system, as well as an appropriate microorganism proved to be crucial for reaching high levels of degradation by P. stutzeri and by an indigenous consortium (about 70%and50%0% of reduction in total petroleum hydrocarbon content in less than 2 wk, respectively).
The innovation reduces not only the petroleum-based content of landfills and oceans, but the costs and emissions associated with transporting and storing large amounts of such plastic waste.
A series of parallel tests (three times for each sample) were carried out to determine the contents of the total petroleum contaminants.The average content of total petroleum contaminants in different water samples were calculated, and the range is from 0.106 mg/L to 1.168 mg/L.
Here we discuss those based on: deionised water, a low aromatic content petroleum spirit (Shellsol D40), and a mineral spirits continuous phase water-in-oil microemulsion system containing a sodium (Na) sulfonate (LAS) anionic surfactant, which has been described in detail elsewhere [4].
Thereafter, non-Frasch sources such as the purification of sour (high sulfur-content) petroleum, the refining of natural gas, and improved methods for obtaining sulfur from metal sulfides gained a greater share of the market.
The water pollution was relatively serious in the river entrance into the lake, and the content of petroleum pollutants exceeded the limit value of oil Class IV in Surface Water Quality Standards [14].
A high content of petroleum coke reduced the stability, which can be attributed to the highly hydrophobic surface of petroleum coke that can easily lead to substantial aggregation of particles.
The total content of petroleum contaminants in Taihu Lake was determined by infrared spectrophotometry stipulated in Water quality determination of petroleum oil, animal and and vegetable oils-Infrared photometric method (GB/T 16488 1996 in China) [10].
