contaminated site remediation Articles

Fall 2009 IET Newsletter

Innovative Environmental Technologies, Inc"s Fall 2009 Newsletter featuring chlorinated and petroleum contaminated site remediation. Visit www.iet-inc.net for more newsletters, case studies, and technical bulletins concerning in-situ remedial technologies. ...

Jan. 10, 2009

By Innovative Environmental Technologies, Inc. (IET)

A method for assessing the potential for confounding applied to ionic strength in Central Appalachian streams

Causal relationships derived from field data are potentially confounded by variables that are correlated with both the cause and its effect. The present study presents a method for assessing the potential for confounding and applies it to the relationship between ionic strength and impairment of benthic invertebrate assemblages in central Appalachian streams. The method weighs all available ...

Nov. 12, 2012

By John Wiley & Sons, Ltd.

Using expectations of gain to bound the benefits from contaminated land remediation

Current risk-based decision-making techniques for prioritising contaminated land for clean-up have been criticized within Hungary for their failure to consider remediation benefits. A cost-benefit or risk-benefit approach is required to ensure that scarce resources for remediation are used efficiently. Problems arise because the credibility of non-market valuation information in Hungary is low, ...

Jan. 26, 2004

By Inderscience Publishers

Water monitoring for remediation - Case Study

Customer: Rainbow Group and T95C Application: Portable water sampling Background: Established in 1985, Rainbow Group are environmental demolition and civil engineering contractors based in Padstow, NSW. Their services include construction, excavation, demolition, remediation and water treatment. Rainbow Group has a renowned reputation with the major oil companies and has decommissioned many ...

Jun. 12, 2015

By Ecotech - ACOEM Group

A mixed-integer non-linear programming with surrogate model for optimal remediation design of NAPLs contaminated aquifer

A mixed-integer non-linear programming (MINLP) with surrogate model was introduced to derive the optimal surfactant enhanced aquifer remediation (SEAR) process (remediation cost minimisation and removal rate maximisation) at a nitrobenzene-contaminated site. First, a 3D multi-phase flow simulation model was developed to simulate the SEAR process; using a radial basis function artificial neural ...

Aug. 5, 2014

By Inderscience Publishers

Horizontal Directional Drilling - A Green and Sustainable Remediation Remedy

Interest in using sustainable practices and technologies for environmental cleanup has increased notably within the past few years. The US EPA and many states have published recommended practices to reduce the environmental footprint of cleanup operations, and many consultants and contractors are attempting to “go green” in contaminated site remediation. It makes sense to conserve ...

Sep. 23, 2011

By Directed Technologies Drilling Incorporated (DTD)

Case study - Hydraulic slurry emplacement of potassium permanganate and zero valent iron for integrated site remediation

Site Description: An active electronic manufacturing facility had an on-site TCE handling unit that was active for 10 years. During this time, approximately 1,365 gallons of solvent was released, which created an approximate 16 acre plume in saprolite and bedrock. Contaminants: Primarily TCE at concentrations greater than 200,000 ug/L in the source area with concentrations of 13,000 ug/L at the ...

Feb. 4, 2017

By Geo-Cleanse International, Inc. (Geo-Cleanse)

A coupled simulation and fuzzy-rule-based method for assessing health risks at a petroleum-contaminated site

Risk assessment of contaminated sites is crucial for evaluating adverse health impacts on local communities, and provides effective decision support for site-remediation practices. In this study, a coupled simulation and fuzzy-rule-based method was proposed for health risk assessment of groundwater contamination, and applied to a petroleum contaminated site. Benzene concentrations under two ...

Jun. 29, 2011

By Inderscience Publishers

Influences of soil properties on chromium (iii) sorption

The presence of chromium in the environment is widespread due to its usage in many industrial processes. The metallurgic, tanning and plating industries are just a few examples of applications which use chromium on a daily basis (Nriagu and Nieboer, 1988). Chromium is stable in 2 oxidation states: cationic Cr with a valence of 3 and anionic with a valence of 6. Chromium (III) is often considered ...

Jun. 23, 2007

By University of Tehran

Exceptionally strong sorption of infochemicals to activated carbon reduces their bioavailability to fish

The addition of activated carbon (AC) to sediments is a relatively new approach to remediate contaminated sites. AC strongly sorbs hydrophobic organic contaminants, thereby reducing their bioavailability and uptake in organisms. Because of its high sorption capacity, AC might however also sorb other chemicals, which are not contaminants, but have ecological functions instead. Examples of such ...

Nov. 23, 2013

By John Wiley & Sons, Ltd.

Public policies for contaminated site cleanup: evidence from a survey of the Italian public

Cleaning up contaminated sites is currently considered one of the most important environmental policy priorities in many countries. Remediation of contaminated sites is attractive because it reduces risks to human health and ecological systems, and brings a host of potential social and economic benefits. Public programmes are deemed necessary by the law and in practice to address contamination at ...

Jul. 20, 2009

By Inderscience Publishers

Removal of radioactive Cs from gravel conglomerate using water containing air bubbles

Remediation of sites contaminated with radioactive material such as Cs is important because of the risk posed to human health. Here, we report the effectiveness of water containing air bubbles with a diameter around 100 nm (nanobubbled water, NB water) for the removal of radioactive Cs. Laboratory experiments confirmed that NB water is more effective than purified water and as effective as ...

Feb. 18, 2013

By IWA Publishing

Opportunities and challenges of integrating ecological restoration into assessment and management of contaminated ecosystems

Ecosystem restoration planning near the beginning of the site assessment and management process (“early integration”) involves consideration of restoration goals from the outset in developing solutions for contaminated ecosystems. There are limitations to integration that stem from institutional barriers, few successful precedents and limited availability of guidance. Challenges occur in ...

Sep. 30, 2015

By John Wiley & Sons, Ltd.

Coordinating ecological risk assessment with natural resource damage assessment: A panel discussion

Contaminated sites in the U.S. undergo remediation and restoration through regulatory programs that lead the two processes through independent but often parallel pathways with different objectives. The objective of remediation is to reduce risk to human health and the environment, whereas that of restoration is to restore injured resources and compensate the public for lost use of the services ...

Oct. 7, 2015

By John Wiley & Sons, Ltd.

Determination of adsorption efficiency based on cation exchange capacity related to red earth, bone meal and pulverised fly ash as ameliorants to lead contaminated soils

Efficient treatment strategies to reduce the toxicity of metal contaminated soil using cost effective techniques such as naturally available ameliorants and industrial waste have emerged. Three easily available amendments were determined: Bone meal, red earth/mud and pulverised fly ash (PFA). The application of ameliorants offered a possible alternative in situ remediation of contaminated sites ...

Jun. 25, 2006

By Center for Environment and Energy Research & Studies (CEERS)

GA2000 used for CO2 data logging in Japan case study

Data logging The data logging function on Geotech's GA range of gas analysers is popular with research teams as users can take regular readings and data can be stored for several days. The data is captured regularly without researchers needing to be present, such as over a weekend or holiday. The Geotech product A project using the GA2000’s functionality was carried out by a team from ...

Nov. 24, 2015

By QED Environmental Systems Ltd.

Brazil - updated soil contamination regulations

While Brazil has not changed its waste generator liability since adopting Law 6.938 in 1981, it has updated and altered requirements for generators. Most recently, the Brazilian National Council on the Environment (CONAMA) adopted CONAMA Resolution 420/2009, establishing guidelines and criteria for the management of contaminated sites. CONAMA Resolution provides for the creation of soil quality ...

Apr. 6, 2010

By Enhesa - Global EHS & Product Compliance Assurance

Site Remediation Public Notifications – Round 2

As you all are aware, NJDEP revised the Technical Requirements for Site Remediation (TRSR) a few years ago to include “Notification and Public Outreach” procedures (NJAC 7:26E-1.4). The rule requires the person responsible for conducting the remediation of a contaminated site to perform various public notifications and outreach activities, the majority of which had to be completed ...

Jun. 22, 2011

By Environmental Waste Management Associates LLC (EWMA)

Sorption and resistant desorption of Atrazine in typical Chinese soils

Atrazine is one of the most commonly used herbicides and is produced and used in large quantity worldwide. In the present study, the sorption and desorption of atrazine in five typical Chinese soils were examined. The sorption of atrazine followed the conventional linear isotherm reasonably well, indicating that sorption was driven largely by hydrophobic partitioning into soil organic matter. ...

Jan. 13, 2009

By Soil Science Society of America (SSSA)

Optimisation approach for pollution source identification in groundwater: an overview

Groundwater pollution occurs from different anthropogenic sources like leakage from Underground Storage Tanks (USTs) and depositories, leakage from hazardous waste dump sites and soak pits. Remediation of these contaminated sites requires optimal decision-making system so that the remediation is done in a cost-effective and efficient manner. Identification of unknown pollution sources plays an ...

Jun. 28, 2011

By Inderscience Publishers