chemical control Articles | Environmental XPRT

Approaches to Chemical Control

Hazardous material is anything that poses a threat to human health and the environment. Most hazardous materials are generated from chemicals. To provide the highest degree of protection for society and the environment from the dangers, stringent controls throughout the lifecycle of the material, starting with import or manufacture and ending with disposal, is necessary. Many governments consider ...

Nov. 21, 2006

By Verisk 3E

White paper - Chemical feed control

The controls, alarms and external contacts are shown on the drawings. As the amount of chemical needed to neutralize the wastewater varies exponentially from neutral pH 7, special consideration must be given to control overshooting the pH. Chemicals, especially viscous caustic soda, must be fully mixed in the compartment before more is added. Rather than modulating the pump settings, the pump is ...

Jan. 19, 2015

By W2 Systems

Acid Eddy, Chemical Dilution Trough

What are the benefits of diluting acids (chemicals) with water before it is allowed to enter the basin in cooling towers? *Reduces chemical damage to cooling tower basin *Protects cooling tower sump pumps *Reduces downtime of tower for basin repair *Simple design greatly improves reliability *More precise chemical control *Lowers chemical costs by controlling chemical feed rate Global ...

Mar. 1, 2016

By Global Treat, Inc

Lynn L. Bergeson, Michael S. Wenk, M.S., and J. Brian Xu, M.D., Ph.D., DABT®, to Speak at ChemCon The Americas 2016

Bergeson & Campbell, P.C. (B&C®) and The Acta Group (Acta®) are proud to once again be sponsors of and program advisors to ChemCon, a global chemical control conference offering authoritative speakers, in-depth sessions, and global perspective on existing and emerging chemical regulatory schemes. Highlights from the diverse and substantive program planned for Toronto include: ...

Sep. 21, 2016

By Bergeson & Campbell, P.C.

TSCA Reform: Is It Likely This Term?

The Toxic Substances Control Act (TSCA) has remained largely unchanged since its enactment in 1976. After years of failed efforts to revise TSCA, and with the help of a motivated Democratic-lead Congress, TSCA legislative reform was off to a brisk start in 2009-2010, during which time over a dozen hearings were convened on how to improve the law. The momentum has slowed considerably since the ...

Apr. 25, 2011

By Bergeson & Campbell, P.C.

TSCA Reform: Is It Likely This Term?

The Toxic Substances Control Act (TSCA) has remained largely unchanged since its enactment in 1976. After years of failed efforts to revise TSCA, and with the help of a motivated Democratic-lead Congress, TSCA legislative reform was off to a brisk start in 2009-2010, during which time over a dozen hearings were convened on how to improve the law. The momentum has slowed considerably since the ...

Apr. 20, 2011

By Acta Group

Japan’s new era of chemical management - coming up this April

2010 and 2011 will be challenging years for companies manufacturing, importing or handling chemical substances in Japan. Major amendments 20 May 2009 to the “Act on the Evaluation of Chemical Substances and Regulation of Their Manufacture, etc” (or Chemical Substances Control Law), sometimes referred to as Japanese REACH, will soon come into effect in two phases: 1 April 2010 and 1 April 2011. ...

Apr. 6, 2010

By Enhesa - Global EHS & Product Compliance Assurance

Leaching kinetics of limonite and nontronite ores

Bioleaching of nickel laterite ores is the extraction technology based on the use of heterotrophic micro-organisms and their organic acid products to dissolve metals from oxide minerals. This study examined the leaching kinetics of limonite and nontronite ores by metabolites including citric, lactic and malic acids. In addition the roles of acidolysis and complexolysis in the kinetic of metal ...

Jun. 8, 2009

By Inderscience Publishers

California to Control Chemicals of Concern

California has a well-established reputation as a trendsetter, but the gargantuan state may have outdone itself with the June 23 draft regulation released from the California Department of Toxic Substances Control (DTSC) for safer consumer product alternatives. The regulations are intended to implement the Green Chemistry Initiative signed into law by Gov. Schwarzenegger in ...

Sep. 1, 2010

By Acta Group

REACHing Asia: Recent trends in chemical regulations of China, Japan and Korea

Will EU REACH (Registration, Evaluation, Authorisation and Restriction of Chemical substances) influence and change the chemical regulatory systems of Asia, as EU RoHS has done in China, Japan and Korea? The answer is YES. China, Japan and Korea are (or will be) filling the regulatory gap they see between REACH and their chemical regulatory systems. With its advanced chemical regulatory system ...

May 1, 2008

By Enhesa - Global EHS & Product Compliance Assurance

Karin Baron Shares Asian Market Regulation Information at Exporting Chemicals and Hazardous Material

On February 23, 2017, Karin Baron, MSPH, Senior Regulatory Consultant with Bergeson & Campbell, P.C. (B&C®) and The Acta Group (Acta®), presented “South Korean and China Regulations and Other Asian Market Regulations & Opportunities” at Exporting Chemicals and Hazardous Materials: Major Global Markets Regulatory Compliance. Ms. Baron’s presentation covered ...

Feb. 28, 2017

By Bergeson & Campbell, P.C.

Dissolution kinetics and Zinc(II) recovery from spent automobile tyres by solvent extraction with Cyanex®272

The potential for solvent extraction using Cyanex?272 for the recovery of zinc from spent automobile tyre ash after prior leaching in hydrochloric acid has been investigated. Experimental data for the dissolution rates have been analysed with the shrinking core model for diffusion control with the surface chemical reaction as the rate controlling step. An extraction yield of 93.42% zinc by 0.032M ...

Dec. 20, 2011

By Inderscience Publishers

Christopher R. Bryant Meets with the First and Second Secretaries of the Embassy of the People’s Republic of China

On January 25, 2018, Christopher R. Bryant, Senior Regulatory Consultant at Bergeson & Campbell, P.C. (B&C®), met with Pan Jianwei and Lu Chao, First and Second Secretaries, respectively, of the Embassy of the People’s Republic of China regarding U.S. regulation of solid and hazardous waste. China is currently revising its “Law on the Prevention and Control of ...

Jan. 25, 2018

By Bergeson & Campbell, P.C.

Troubleshooting for Liquid Particle Counting

This paper discusses how to ensure that a liquid optical particle counter (OPC) is producing valid data. Ensuring that your liquid OPC is operating within its designed specification is critical to obtaining quality data. As data from OPCs becomes increasingly important to maintaining process control, it becomes more critical than ever for operators to have confidence in the data being generated. ...

May 18, 2019

By Particle Measuring Systems

Evaluations of ChemTreat Solutions Automated Feed Systems at Southeast paper mill case study

A large Southeast Paper Mill was experiencing poor control with their water treatment supplier who was using pace and chemical verification instrumentation. The mill was experiencing major variances in cycle control, conductivity, P-alkalinity, and phosphate control. ChemTreat had investigated the causes of these variances and submitted their recommendations for improvement. As a result, ...

Oct. 9, 2014

By ChemTreat, Inc. - a subsidiary of Danaher Corporation

Chemicals regulation in the Middle East - an overview

Identifying, tracking, maintaining and complying with international chemical regulations has never been more important – or more complex. Tamar Szeps-Znaider of 3E Company provides an overview of developments in the Middle East. Companies of all sizes increasingly face challenges that result from globalisation in the marketplace and an increase in international initiatives to protect the health ...

May 26, 2009

By Verisk 3E

Removal of toxic elements from aqueous solution using bentonite modified with <sc>l</sc>-histidine

Removal of toxic elements from aqueous solution using bentonite modified with l-histidine

This study proposes the use of bentonite modified with l-histidine for the removal of Cu, Co, Cr, Fe, Hg, Ni, U and Zn from aqueous solutions such as those impacted by acidic drainage. The surface areas of natural bentonite and bentonite–histidine were 73.8 and 61.2 m2 g−1, respectively. Elemental analysis showed an increase in the amount of carbon (0.258%) and nitrogen ...

Dec. 19, 2014

By IWA Publishing

Charles M. Auer Quoted By Inside EPA Regarding Reorganization Of EPA`s Office of Pollution Prevention and Toxics

On June 4, 2018, Charles M. Auer, Senior Regulatory and Policy Advisor with Bergeson & Campbell, P.C. (B&C®), was quoted in the Inside EPA article “Eying 2018 Deadline, EPA Taps New Division Heads For Reorganized OPPT.” The new reorganization plan is winning approval from former officials. Charles Auer, former director of OPPT and now with the law firm of Bergeson & ...

Jun. 4, 2018

By Bergeson & Campbell, P.C.

Time Vs. Space: Two Successful Biological Nutrient Removal Strategies

Two distinct strategies have been practiced successfully for nutrient removals at a facility. One utilizes a continuous flow strategy with designated anaerobic, anoxic and aerobic zones. This strategy was targeted for biological nitrogen and phosphorus removal with minimal chemical addition. The other utilizes anaerobic, anoxic and aerobic cycle times in sequence at existing basins under a timer ...

Oct. 21, 2006

By Water Environment Federation (WEF)

Chemical feed control using coagulation computer models and a streaming current detector

This paper describes the use of both the streaming current detector (SCD) and coagulation computer models to provide real-time data for required coagulant feed rates. The method for computer modeling of coagulation and other water treatment processes/operations was originally developed for Lake Michigan Filtration Plant in Grand Rapids, Michigan (MI). Since the initial implementation, a number ...

Jun. 21, 2013

By IWA Publishing