• Hexavalent chromium: Regulation and health effects. (environcj.in)
  • Bioremediation of Hexavalent Chromium from Industrial Effluents. (environcj.in)
  • Sulfidated nano zero-valent iron particles were immobilized on ZSM-5 zeolite (Z/S-nZVI) and used for hexavalent chromium (Cr(VI)) remediation . (bvsalud.org)
  • This study investigated the heat-acid activated red mud used for hexavalent chromium (Cr 6+ ) removal from aqueous solution. (scirp.org)
  • The results showed that the heat-acid activated red mud enhanced hexavalent chromium removal capacity from 0.003 to 0.015 mg·g ﹣1 . (scirp.org)
  • Zhitkovich, A., Vitkun, V. and Costa, M. (1996) Formation of the Amino Acid-DNA Complexs by Hexavalent and Trivalent Chromium in Vitro: Importance of Trivalent Chromium and Phosphate Group. (scirp.org)
  • Chaudhary, A.J., Goswami, N.C. and Grimes, S.M. (2003) Electrolytic Removal of Hexavalent Chromium from Aqueous Solutions. (scirp.org)
  • Tewari, N., Guha, B.K. and Asudevan, P.V. (2005) Adsorption Study of Hexavalent Chromium by Bentonite Clay. (scirp.org)
  • Pradhan, J., Das, S.N. and Thakur, R.S. (1999) Adsorption of Hexavalent Chromium from Aqueous Solution by Using Activated Red Mud. (scirp.org)
  • The contamination of hexavalent chromium species is a major problem in many industrial areas, such as electroplating and metal finishing industries [ 5 - 7 ]. (hindawi.com)
  • 11 ] found that Sphagnum peat moss is an effective adsorbent for hexavalent chromium and 50% of chromium recovery was obtained. (hindawi.com)
  • Srivastava [ 12 ] discovered that sawdust is effective for removal of hexavalent chromium and other heavy metals. (hindawi.com)
  • Therefore, the search of new adsorbents for the removal of hexavalent chromium has directed attention to synthesize new materials with high adsorption efficiency and good regeneration ability. (hindawi.com)
  • The remediation entails testing and removing hazardous bi-products of the cement manufacturing process that are rich in lead, mercury, hexavalent chromium, and arsenic. (ttu.edu)
  • My graduate research focused on ZVI transport, reactivity, and synthesis for use for chlorinated solvents and hexavalent chromium reduction. (haleyaldrich.com)
  • The utility company was found liable for dumping hexavalent chromium (aka chromium-6), a carcinogen used to suppress rust formation at the Hinkley gas compressor station, into an unlined pond in the '50s and '60s. (motherjones.com)
  • Even with ongoing cleanup efforts, hexavalent chromium haunts the town-potential new residents know Hinkley's history, and those still there fear the ever-present threat of further deception or mismanagement in the remediation process. (motherjones.com)
  • Hexavalent chromium (chromium(VI), Cr(VI), chromium 6) refers to chemical compounds that contain the element chromium in the +6 oxidation state (thus hexavalent). (partcommunity.com)
  • Virtually all chromium ore is processed via hexavalent chromium, specifically the salt sodium dichromate. (partcommunity.com)
  • Additional hexavalent chromium compounds are chromium trioxide and various salts of chromate and dichromate, among others. (partcommunity.com)
  • Hexavalent chromium is used in textile dyes, wood preservation, anti-corrosion products, chromate conversion coatings, and a variety of niche uses. (partcommunity.com)
  • Hexavalent chromium can be formed when performing "hot work" such as welding on stainless steel or melting chromium metal. (partcommunity.com)
  • In these situations the chromium is not originally hexavalent, but the high temperatures involved in the process result in oxidation that converts the chromium to a hexavalent state. (partcommunity.com)
  • Hexavalent chromium can also be found in drinking water and public water systems. (partcommunity.com)
  • Inhaled hexavalent chromium is recognized as a human carcinogen. (partcommunity.com)
  • Workers in many occupations are exposed to hexavalent chromium. (partcommunity.com)
  • Workers who are exposed to hexavalent chromium are at increased risk of developing lung cancer, asthma, or damage to the nasal epithelia and skin. (partcommunity.com)
  • Within the European Union, the use of hexavalent chromium in electronic equipment is largely prohibited by the Restriction of Hazardous Substances Directive. (partcommunity.com)
  • Biomineralization, a process by which microorganisms transform aqueous metal ions into amorphous or crystalline precipitates, is regarded as a promising and cost-effective strategy for remediating chromium and uranium contamination. (geoscienceworld.org)
  • Treatment of chromium contamination and chromite ore processing residue (No. Technical Paper URS Corporation). (bsgf.fr)
  • Among several remedial measures, bioremediation is an approaching process to control the accelerated growth of heavy metal contamination including chromium. (environcj.in)
  • With over 900,000 bank cubic meters of soil excavated at the 100-D-100, 100-D-104 and 100-D-30 waste sites, workers excavated what officials believe to be the primary source of chromium contamination to the Columbia River. (envirocon.com)
  • From the 1940s to the 1960s, leaks or spills of sodium dichromate caused much of the chromium contamination in the D reactor areas. (envirocon.com)
  • With the major removal of chromium-contamination near the D reactors, the team at Hanford is one step closer to achieving that goal. (envirocon.com)
  • The 306 Complex was a High Explosives (HE) Lab location in Los Alamos N.M. SET was responsible for the remediation of legacy HE contamination as well as large quantities of asbestos prior to the successful demolition of the complex. (setinc.com)
  • This paper describes the first application of calcium polysulfide (CaSx) to the remediation of contaminated groundwater and high-lime COPR in a series of laboratory experiments, which have demonstrated the effectiveness of the treatment in quantitatively and rapidly reducing Cr(VI) to Cr(III) over the pH range (8-12.5) typically found at the sites. (ed.ac.uk)
  • More than $14 billion will be spent in 2015 to remove metals, VOCs and other contaminants from groundwater, according to Site Remediation World Markets published by the McIlvaine Company. (environmentalleader.com)
  • The US is the world leader and over the next few years will represent the largest market for groundwater remediation , the report says. (environmentalleader.com)
  • The remediation of groundwater at the Japanese Fukushima site will be ongoing and will represent 5 percent of the total groundwater remediation market. (environmentalleader.com)
  • This study reviewed groundwater pollution and discussed possible remediation measures. (scirp.org)
  • Prevention of groundwater pollution is more appropriate than remediation. (scirp.org)
  • Talabi, A. and Kayode, T. (2019) Groundwater Pollution and Remediation. (scirp.org)
  • Crews chased chromium plumes by excavating to depths of 85 feet to reach groundwater and installing uniquely engineered ramps for transportation into and out of the excavation area. (envirocon.com)
  • ERS have completed the remediation of perchloroethylene (PCE) contaminated soils and groundwater at a former tannery near Kinghorn, Fife. (ersremediation.com)
  • This review describes the potential and limitations of bioremediation for these two toxic metals and highlights the importance of biologically mediated transformation, immobilization, and mineralization of toxic metals during the course of remediation. (geoscienceworld.org)
  • Fungal bioremediation improved with biotechnology tools will be suitable output for rapid remediation which is vital for this moment. (environcj.in)
  • 2011). In situ Carica papaya stem matrix and Fusarium oxysporum (NCBT-156) mediated bioremediation of chromium. (environcj.in)
  • Such preventive measures include proper waste disposal, monitoring of hazardous materials, conducting environmental audit periodically and intensifying health education while remediation includes stream stripping, oxygen sparging, bioremediation, chemical oxidation and thermal treatment. (scirp.org)
  • Bioremediation is widely considered a cost-effective and sustainable remediation technique which utilises the natural processes of. (ersremediation.com)
  • Kumbasar, R.A. (2008) Selective Separation of Chromium (VI) from Acidic Solutions Containing Various Metal Ions through Emulsion Liquid Membrane Using Trioctylamine as Extractant. (scirp.org)
  • Sahin, Y. and Ozturk, A. (2005) Biosorption of Chromium(VI) Ions from Aqueous Solution by the Bacterium Bacillus thuringiensis. (scirp.org)
  • Apart from the pandemic, the prominent focus on drinking water in the legislative and regulatory spheres included addressing unregulated contaminants , lead remediation and prevention, and assistance for private well owners. (wqpmag.com)
  • Recently, adsorption has been recognized as one of the most promising techniques for removal of chromium and its effectiveness has been demonstrated [ 5 - 7 , 9 ]. (hindawi.com)
  • Now, several researchers have focused on metal oxide nanoparticles and their composites for their high BET surface areas and fast adsorption kinetics when subjecting to the treatment of chromium from waste water. (hindawi.com)
  • The chromium adsorption performance results showed that the maximum chromium adsorption capacity was 30.96 mg·g -1 , based on Langmuir theory. (aes.org.cn)
  • Chromium adsorption decreased with an increase in pH. (aes.org.cn)
  • The soda-ash roasting of chromite ore processing residue for the reclamation of chromium. (bsgf.fr)
  • Application of the Rietveld method to assess chromium(VI) speciation in chromite ore processing residue. (bsgf.fr)
  • Application of sequential extractions and X-ray absorption spectroscopy to determine the speciation of chromium in Northern New Jersey marsh soils developed in chromite ore processing residue (COPR). (bsgf.fr)
  • Review of chromite ore processing residue (COPR): past practices, environmental impact and potential remediation methods. (bsgf.fr)
  • Characterization of chromium-containing wastes and soils affected by the production of chromium tanning agents. (bsgf.fr)
  • As part of the ongoing remediation effort at the Hanford Site in Richland, Washington, the Envirocon team worked diligently to excavate chromium-contaminated soils at the 100-D waste sites in the D reactor area. (envirocon.com)
  • Chromium is a common contaminant of soils in areas of the UK with historical Chromium works. (ersremediation.com)
  • Rengaraj, S., Yeon, K.H. and Moon, S.H. (2001) Removal of Chromium from Water and Wastewater by Ion Exchange Resins. (scirp.org)
  • PNNL chemists investigate the performance of ion exchange resins for subsurface remediation of uranium, technetium, and chromium. (pnnl.gov)
  • The potential for large-scale use of CaSx in the remediation of Cr(VI) from COPR is also discussed. (ed.ac.uk)
  • With the development of the stringent ecological standards, it is urgent for these industries to reduce the chromium in their effluents to an acceptable level before discharging into municipal sewers. (hindawi.com)
  • Though India is the 3rd largest chromium producing country and the Sukinda valley of Odisha, is the chief source for chromium, hence here the threat of chromium pollution is at a high point. (environcj.in)
  • The pathway of chromium toxicity and its possible remediation potential by fungi have been studied extensively in the Sukinda area. (environcj.in)
  • The first report relates to Kanpur Nagar, Uttar Pradesh around the area of Chromium dump at Rania, Kanpur Dehat and Rakhi Mandi, Kanpur Nagar Water Pollution at Rania, Kanpur Dehat and Rakhi Mandi, Kanpur. (org.in)
  • The NGT directs the Chief Secretary, Uttar Pradesh to ensure supply of drinking water to the residents Rania, Kanpur Dehat and Rakhi Mandi, Kanpur Nagar (area around the chromium dump). (org.in)
  • Kotas, J. and Stasicka, Z. (2000) Chromium Occurrence in the Environment and Methods of Its Speciation. (scirp.org)
  • Various methods have been developed to remove the chromium from industrial waste water, such as chemical redox followed by precipitation, ion exchange, and reverse osmosis. (hindawi.com)
  • Chromium has the potential to cause cancer in humans and is toxic to fish and other aquatic life found in the river. (envirocon.com)
  • She said at first a PG&E representative had told her family that there was only the much-less-toxic chromium 3 in their water, but Walker said when she later called the company an employee told her it was actually chromium 6 in their water. (850wftl.com)
  • She is assisting in the remediation and demolition of a decommissioned cement plant. (ttu.edu)
  • SET was tasked with the remediation and demolition of numerous structures within the TA-18 Complex. (setinc.com)
  • This results demonstrate that the species of chromium in the critical layer changed from Cr(III) to Cr(VI) as the concentration of chromium increased from low to high. (bvsalud.org)
  • Remediation of the contaminated soil and water is also discussed, and phytoremediation methods are brought forward, as compared with chemical methods. (intechopen.com)
  • The presence of chromium in the underground water in village Khanchandpur is many times the permissible limit. (org.in)
  • Further, the Chief Secretary has been asked to ensure that untreated sewage is not discharged in river Ganga and 'pending a permanent solution, at least temporary arrangement by way of phytoremediation, bio-remediation or any other technology is done to disinfect/treat water before the same is discharged into the River Ganga. (org.in)
  • Some of this material had to be specially treated which meant it was mixed with cement to stabilize the chromium before final disposal at ERDF. (envirocon.com)
  • Based on survey results, the report recommended that public health interventions should emphasize the importance of safe mold remediation methods, and should ensure the availability of appropriate personal protective equipment. (cdc.gov)
  • The above results demonstrated that the synthesized metal oxides nanocomposite is of great potential for Cr(VI) removal in the fields of remediation of environmental problems. (hindawi.com)
  • After years of exposure to chromium 6, she has had five stomach surgeries and three breast surgeries. (850wftl.com)
  • With an increase in straw biochar content, the removal rate of chromium increased. (aes.org.cn)
  • The initial estimated cost of the remediation was $40 million, but the final cost was just under $7 million, after a risk assessment and the implementation of a cleanup and containment plan. (eponline.com)
  • State environmental agencies, community groups, technical consultants, legal counsel, investors, real estate professionals, and federal government agencies are just a few of the groups that may be involved in the remediation of brownfields. (eponline.com)
  • Meanwhile, the development of nanoscience and nanotechnology is expected to provide a solution for the remediation of environmental problems. (hindawi.com)
  • In college and graduate school, I focused on environmental chemistry and specifically, in-situ remediation via zerovalent iron (ZVI). (haleyaldrich.com)
  • While there are still some areas of the remediation/environmental field that are still very male-dominated, that is shifting. (haleyaldrich.com)
  • Selected analytical methods for environmental remediation and recovery (SAM) [online]. (cdc.gov)
  • PG&E hid the crisis and misled the community on the effects of that specific type of chromium and its possible connection to health problems in the town. (motherjones.com)
  • Walker and her family were tested for chromium 6, a process she said was "excruciating. (850wftl.com)
  • For me, I worked for a contractor and was designing remediations, slinging bags of amendments into tanks, and evaluating data before I found my way to Haley & Aldrich, but that's not going to work for everyone. (haleyaldrich.com)
  • I checked out a book on chromium 3, and to my surprise I found out that there's two types of chromium," said Walker. (850wftl.com)
  • This eco-friendly, cost-effective, and non-invasive method is considered as a complementary or alternative tool compared to engineering-based remediation techniques. (mdpi.com)
  • Protecting the Columbia River is one of the major goals of the ongoing remediation project at the Hanford Site, specifically in the 100-D Reactor Area. (envirocon.com)
  • I have been in the remediation field for about 15 years. (haleyaldrich.com)
  • How do you see the remediation field changing in the years to come with respect to gender diversity? (haleyaldrich.com)
  • After we received our results back, we all had chromium 6 in our DNA - that was pretty devastating," said Walker. (850wftl.com)
  • It also provides nonspecialists with an introduction to several of the main approaches to remediation and acknowledges some questions about this technology that remain to be answered. (geoscienceworld.org)
  • Critical layer in liquid-solid system influencing the remediation of chromium using zeolite-supported sulfide nano zero-valent iron. (bvsalud.org)
  • An $8 million, 20-year soil remediation project at a defunct plating shop and closed in half the time - at a fraction of the cost. (acuityes.com)