Mercury reduction

Mercury reduction in household batteries began in 1984 and continues today. During the last five years, the industry has reduced the total amount of mercury usage by about 86%. Some batteries such as the alkaline battery have had about a 97% mercury reduction in the product. Newer alkaline batteries may contain about one-tenth the amount of mercury previously contained in the typical alkaline battery. Some alkaline batteries have zero-added mercury, and several mercury-free, heavy-duty, carbon-zinc batteries are on the market. 

Mercury poisoning, treatment of, 16 51 Mercury perchlorate, 18 278 Mercury(II) perchlorate, 18 278 Mercury Reduction and Disposal Act of 2001, 16 42, 46... 

Vapours of mercury, phenyl, and alkylmercury compounds were collected and measured as described except that the dichromate absorption solution was analyzed by the mercury reduction technique [28] after treatment with an excess of chloride hydroxylammonium chloride solution. 

T0039 AMETEK Rotron Biofiltration Products, Biocube Aerobic Biofilter T0041 AP Technologies, Inc., Mercrobes Mercury Reduction Technology T0048 Aqualogy BioRemedics, Environmental Quality PetroKlenz... 

Mercrobes mercury reduction technology (Mercrobes) is a proprietary, ex situ technology for the treatment of soils, sludges, sediments, and waters contaminated with mercury and mercury compounds. The process uses proprietary microbes to reduce organic and inorganic mercury compounds to elemental mercury. The vendor claims that in addition to reducing charged... 

According to the vendor, following the mercury reduction step, the elemental mercury can be recovered using standard technologies, e.g., vapor extraction. 

The other applications are mercury reduction by sodium borohydride (NaBH4) and lead reduction by alkali metal hydride (MH). 

Mason, RP Baier, RW University of Maryland Solomons, MD Abiotic and biotic mechanisms for mercury reduction in marine waters National Science Foundation, Division of Ocean Sciences... 

Water (inorganic mercury) Reduction of sample with SnCI2 in HN03 purging of mercury to detector CVAAS 0.1 ng/L 99 Lee et al. 1989... 

Hobman JL, Wilson JW and Brown NL (2000) Microbial mercury reduction. In Lovley DR, ed.. Environmental microbe—metal interactions, pp. 177-197. ASM Press, Washington DC. 

Several researchers have also suggested that bacteria mediate mercury reduction [54,55]. SicUiano et al. [56] recently examined the role of microbial reduction and oxidation processes in regulating DGM diel (over a 24h period) patterns in freshwater lakes. The authors demonstrate that photochemi-cally produced hydrogen peroxide regulates microbial oxidation processes and may account for the diel patterns observed in DGM data. Overall, the mechanisms responsible for mercury reduction and the relative contributions of biotic and abiotic processes are still unclear but solar radiation appears to be a common instigator of photo-reduction. 

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