Cement bentonite cutoff walls for polluted sites

2013 ◽  
pp. 149-165 ◽  
Author(s):  
K Soga ◽  
K Joshi ◽  
J Evans
Keyword(s):  
Cutoff Walls ◽  
Polluted Sites

scholarly journals Seaweeds As a “Palatable” Challenge between Innovation and Sustainability: A Systematic Review of Food Safety

2021 ◽  
Vol 13 (14) ◽  
pp. 7652
Author(s):  
Giuseppe Cavallo ◽  
Chiara Lorini ◽  
Giuseppe Garamella ◽  
Guglielmo Bonaccorsi
Keyword(s):  
Heavy Metals ◽  
Systematic Review ◽  
Food System ◽  
Meta Analysis ◽  
Anthropogenic Factors ◽  
Novel Foods ◽  
Food Shortages ◽  
Polluted Sites ◽  
The Impact ◽  
Global Food

Moderate or severe food insecurity affect 2 billion people worldwide. The four pillars of food security (availability, access, use and stability) are in danger due to the impact of climatic and anthropogenic factors which impact on the food system. Novel foods, like seaweeds, have the potential to increase food yields so that to contribute in preventing or avoiding future global food shortages. The purpose of this systematic review was to assess microbiological, chemical, physical, and allergenic risks associated with seaweed consumption. Four research strings have been used to search for these risks. Preferred Reporting Item for Systematic Reviews and Meta-analysis (PRISMA) guidelines were applied. Finally, 39 articles met the selected criteria. No significant hazards for microbiological, allergenic, and physical risks were detected. Regarding chemical risk, algae can accumulate various heavy metals, especially when harvested in polluted sites. Cultivating seaweeds in a controlled environment allows to avoid this risk. Periodic checks will be necessary on the finished products to monitor heavy metals levels. Since the consumption of algae seems to be on the rise everywhere, it seems to be urgent that food control authorities establish the safety levels to which eating algae does not represent any risk for human health.

Production and Properties of Biosurfactants from a Newly Isolated Pseudomonas fluorescens HW-6 Growing on Hexadecane

2006 ◽  
Vol 61 (7-8) ◽  
pp. 553-559 ◽  
Author(s):  
Evgenia Vasileva-Tonkova ◽  
Danka Galabova ◽  
Emilia Stoimenova ◽  
Zdravko Lalchev
Keyword(s):  
Pseudomonas Fluorescens ◽  
Industrial Wastewater ◽  
High Surface ◽  
Emulsifying Properties ◽  
Effective Surface ◽  
Mineral Oils ◽  
Air Water Interface ◽  
Polluted Sites ◽  
High Concentrations ◽  
High Surface Activity

The newly isolated from industrial wastewater Pseudomonas fluorescens strain HW-6 produced glycolipid biosurfactants at high concentrations (1.4-2.0 g l-1) when grown on hexadecane as a sole carbon source. Biosurfactants decreased the surface tension of the air/ water interface by 35 mN m-1 and possessed a low critical micelle concentration value of 20 mg l-1, which indicated high surface activity. They efficiently emulsified aromatic hydrocarbons, kerosene, n-paraffins and mineral oils. Biosurfactant production contributed to a significant increase in cell hydrophobicity correlated with an increased growth of the strain on hexadecane. The results suggested that the newly isolated strain of Ps. fluorescens and produced glycolipid biosurfactants with effective surface and emulsifying properties are very promising and could find application for bioremediation of hydrocarbon-polluted sites.

Application of Bacillus sp. strain VT-8 for decontamination of TNT-polluted sites

Microbiology ◽  
2014 ◽  
Vol 83 (5) ◽  
pp. 577-584 ◽  
Author(s):  
I. P. Solyanikova ◽  
I. V. Robota ◽  
D. M. Mazur ◽  
A. T. Lebedev ◽  
L. A. Golovleva
Keyword(s):  
Bacillus Sp ◽  
Polluted Sites
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