In this paper, a brief outline is presented on acidic ferric ion oxidation of mineral sulphides for the extraction of metals in both stirred tank reactors for mineral concentrates and heaps for low-grade ores. The identities and capabilities of the relatively few acidophiles that assist the oxidative processes are summarized and their responses to selected extremes in their growth environments ...

Combined sandstone petrography and heavy mineral analysis allow to decipher different sediment routing systems that could not be resolved by one method alone in the South Pyrenean foreland basin. We apply this approach deltaic alluvial deposits of southern part Jaca basin, time equivalent nearby Ainsa Ebro basins, order unravel evolution source areas fluvial drainage from Eocene Miocene. Our st...

The treatment of the industrial wastewater can be particularly difficult in the presence of toxic compounds. Excessive concentration of Chromium in soluble form is toxic to a wide variety of living organisms. Biological removal of heavy metals using natural and genetically engineered microorganisms has aroused great interest because of its lower impact on the environment. Ralston metallidurans,...

BACKGROUND Little is known about the association between use of herbs and dietary supplements (HDS) and lifestyle/behavior factors in young adults in the US. METHODS Analyzing the 2002 National Health Interview Survey (NHIS), we examined the patterns of HDS (excluding vitamins/minerals) use among young adults in the United States using descriptive statistics and logistic regression. RESULTS...

The pulp of Dialium guineense (Velvet tamarind) was analyzed and the proximate analysis and mineral composition evaluated. The pulp contained 30% moisture content, 7.09% crude protein, 0.75% crude lipid and below detection limit for crude fiber, 2% ash content, 57.04% available carbohydrate and energy value 263.27(KJ/100g). Mineral composition and Vitamin C content for the samples were investig...

Phytate is the primary storage form of both phosphate and inositol in plant seeds. It forms complexes with dietary minerals, especially iron and zinc, and causes mineral-related deficiency in humans. It also negatively impacts protein and lipid utilisation. It is of major concern for individuals who depend mainly on plant derivative foods. Processing techniques, such as soaking, germination, ma...

A root rot disease is the most important factor limiting commercial production of vanilla [Vanilla fragrans (Salisb.) Ames] in Puerto Rico. According to a survey of growers in 1945 (1), the disease was responsible for 40% to 50%o death of vines. In 1927 the causal organism was identified as Fusarium batatatis var. vanilae, Tucker (5). The disease usually becomes more pronounced during the third...

Heavy oil is considered as a multipurpose complex mineral, and the processing of heavy oils “complex problem”, aimed both at increasing yield light fractions “transport” ability oil, extracting metals from asphaltene resinous fraction. The recovery (such vanadium, nickel, titanium, iron, etc.) was performed by cavitation extraction technology with use hydrocarbon solvents chemical extractants, ...

Biochar, as an high efficiency, environmental friendly, and low-cost adsorbent, is usually used as soil conditioner, bio-fuel, and carbon sequestration regent. Recently, biochar has attracted much attention in wastewater treatment field. There are plenty of studies about application of biochar to adsorb pollutants in wastewater, because of its low-cost preparation, high surface area, large pore...