Surfactant Enhanced Bioremediation of Hydrocarbon Contaminated Soils Using Alkyl Polyglucoside

Bioremediation is an efficient and environmentally friendly method for the degradation of petroleum hydrocarbons in contaminated soils. This study investigated the effects of biosurfactant alkyl polyglycosides (APG) on enhanced biodegradation of petroleum hydrocarbon contaminated soils. Three soil samples were contaminated with two different grades of crude oil (medium and Light). Alkyl polyglucoside was synthesised and subjected to FTIR for comfirmation of the product before it was applied in the remediation of contaminated soil. The alkyl polyglucoside is used as a treatment regime in the remediation of the hydrocarbon contamination in the three soil samples. Results of total petroleum hydrocarbons (TPH) before remediation with bio-surfactant showed that samples contaminated with medium crude for Eneka, Ozuoba and Rukpokwu were 15744.00 mg/kg, 11359.00 mg/kg and 11470.00 mg/kg respectively and after remediation reduced to 4276.00 mg/kg, 4265.00 mg/kg, and 3205.00 mg/kg, showing a reduction percentage of 72.84%, 62.44% and 72.05% respectively. Soil samples contaminated with light crude showed result of TPH of 11339.00 mg/kg, 10662 mg/kg and 10226 mg/kg and after remediation reduced to 2981 mg/kg, 3879 mg/kg, and 4245 mg/kg respectively showing a reduction percentage of 73.71%, 63.62 % and 58.49% respectively. The enhanced efficiency of the bio-surfactant at degrading total petroleum hydrocarbons was achieved as a result of the increased solubility thus improving the bioavailability of the hydrocarbons due to the action of the alkyl polyglucoside.

REVISITING THE ECOTOXICITY AND EFFICIENCY OF DIFFERENT CLASSES OF INDUSTRIAL NONIONIC SURFACES USED FOR CLEANING METAL SURFACES IN THE PROCESS OF CAPILLARY CONTROL OF DETAILS OF THE AVIATION TECHNOLOGY (review)

A review of modern classes of nonionic surfactants used for cleaning metal surfaces is carried out. The following aspects are considered: efficiency of cleaning metal surfaces, ecotoxicity, biodegradability, impact on human health. The most promising class of surfactants – alkyl polyglycosides (APG) – for cleaning metal surfaces, including in the process of capillary control, has been determined. It is noted that APGs have shown high efficiency in removing even such contaminants as denatured protein and burnt corn starch from metal surfaces. In addition, APGs have the highest emulsifying ability among industrial surfactants, which effectively affects the reduction in surfactant consumption when cleaning the surfaces.

Synthesis of alkyl polyglycosides using SO3H-functionalized ionic liquids as catalysts

Alkyl polyglycosides (APG), produced from glucose and fatty alcohols, are one kind of renewable green non-ionic surfactants. It is of great significance to develop a green catalyst reaction system for synthesis of alkyl polyglycosides.

Life cycle assessment of the production of surface-active alkyl polyglycosides from acid-assisted ball-milled wheat straw compared to the conventional production based on corn-starch

The environmental impacts of alkyl polyglycosides production from wheat straw are assessed and compared to the conventional process based on corn starch.