Tag:

chemicals

Zea Chem: The Last Word in Cellulosic Ethanol?

Sustainable fuel manufacturer Zea Chem has announced that it has succeeded in producing biomass-derived ethanol at a capacity that can be scaled to commercial production.

In a statement from the company’s headquarters, Zea Chem described the completion of a suite of products including biorefined cellulosic ethanol. “The next step is to integrate these known processes to achieve the ultimate target of commercial production of economical and sustainable biofuels and bio-based chemicals,” said CEO Jim Imbler.

07/07/2010 0 comment

Renewable Energy

Toxic Chemicals Database Comes Online

written by Environmental News Network

The U.S. Environmental Protection Agency is making it easier to find chemical information online. The EPA is releasing a database called ToxRefDB, which allows scientists and the interested public to search and download thousands of toxicity testing results on hundreds of chemicals.

ToxRefDB captures 30 years and $2 billion of federal required testing results. This is a handy regulatory and technical tool, and simplifies at least some of the required toxicity investigation research.

ToxRefDB provides detailed chemical toxicity data in an accessible format. It is a part of ACToR (Aggregated Computational Toxicology Resource), an online data warehouse that collects data from about 500 public sources on tens of thousands of environmentally relevant chemicals, including several hundred in ToxRefDB.

05/04/2010 0 comment

Water & Conservation

Plastic Pollution in Water Supplies to Be Investigated

written by Yale Environment 360

The U.S. Environmental Protection Agency says it will require new studies on the health and environmental effects of bisphenol A (BPA), a potentially harmful chemical found in thousands of everyday plastics.

The federal agency, which is looking to add the chemical to its list of “chemicals of concern,” will begin measuring levels of the chemical in drinking water and ground water supplies. More than one million pounds of BPA are released into the environment annually, EPA officials say.

While studies have shown that the chemical disrupts development in animals, that link has not been confirmed for humans.

03/31/2010 2 comments

Renewable Energy

EPA Launches National Study of Hydraulic Fracturing

written by Walter Wang

Responding to reports of environmental contamination in gas drilling areas across the country, the U.S. Environmental Protection Agency will conduct a nationwide scientific study to determine if the problems are caused by the practice of injecting chemicals and water underground to fracture the gas-bearing rock.

The study, announced Thursday but hinted at for months, will revisit research the agency published in 2004, which concluded that the process of hydraulic fracturing did not pose a threat to drinking water. The 2004 report has been widely criticized, in part because the agency didn’t conduct any water tests in reaching that conclusion.

03/18/2010 0 comment

Renewable Energy

Natural Gas Drilling: What We Don’t Know

written by Walter Wang

It takes brute force to wrest natural gas from the earth. Millions of gallons of chemical-laden water mixed with sand — under enough pressure to peel paint from a car — are pumped into the ground, pulverizing a layer of rock that holds billions of small bubbles of gas.

The chemicals transform the fluid into a frictionless mass that works its way deep into the earth, prying open tiny cracks that can extend thousands of feet. The particles of sand or silicon wedge inside those cracks, holding the earth open just enough to allow the gas to slip by.

01/13/2010 2 comments

Water & Conservation

Colorado Towns Take Extra Measures to Protect Water From Gas Drilling

written by Walter Wang

In 2005 the U.S. Bureau of Land Management offered up thousands of acres of federal land in Colorado to drilling. Because the land was in the heart of an area that supplies drinking water to 55,000 people in the western part of the state, the plan drew strong opposition from local communities.

The concerns they raised — that the disruption and chemicals used in drilling might ruin their water — foreshadowed similar concerns that have since rippled across the country as drilling operations expand from Wyoming to New York. And their solution may be a lesson that ripples to those communities as well.

The communities — the city of Grand Junction and the neighboring town of Palisades — began by making their concerns clear: drilling is important, but protecting the water supply is paramount.

12/18/2009 1 comment

Water & Conservation

Contaminated Tap Water Calls for Urgent Improvement of Water Systems

written by Walter Wang

The New York Times’ latest story in its series on water contamination might make you think twice before filling up your glass from the tap. Although the law probably deems your water safe, it could still be — legally — teeming with chemicals that cause health problems “from upset stomachs to cancer and birth defects.”

The Safe Drinking Water Act, which regulates tap water, is dangerously out of date, according to the Times. The list of chemicals it regulates stalled at 91 in 2000 — even though water pollution has picked up since then and hundreds of chemicals have been associated with a risk of cancer when found in drinking water. Efforts to tighten water standards have been thwarted by industry lobbyists, according to the Times.

12/17/2009 1 comment

Renewable Energy Water & Conservation

Dow Chemical and Saudi Arabia’s KAUST University Vow To Clean Up Environment

written by Green Prophet

greenprophet-story-on-green-chemistry-and-greenn-beakers-in-the-lab-image Dow Chemical Company, a worldwide leader in the global chemical industry, and sponsor of the 2010 Dow Live Earth Run for Water, has entered into agreements with the new Saudi Arabian King Abdullah University of Science and Technology (KAUST) for developing cleaner, new routes for producing chemical derivatives.

The two are also looking into ways for carbon capture –a method which proposes to suck up and store greenhouse gas emissions.

Although many of the chemicals produced by the American chemical giant are used in the petroleum distilling and petrochemical industries, with much of the company’s “raw material” is coming from Saudi Arabia.

11/30/2009 0 comment

Water & Conservation

Drilling Chemicals Found In Drinking Water Near Natural Gas Sites

written by Ceylan Thomson

For the first time, scientists have discovered chemicals used in a controversial natural gas drilling technique in water wells near the gas sites.

Scientists for the Environmental Protection Agency (EPA), testing wells near a major gas drilling area in Wyoming, have found traces of drilling chemicals in three wells, and other contaminants — including oil, gas, and heavy metals — in 11 of 39 wells recently tested, according to the Web site Pro Publica.

The chemicals are used in a process called hydraulic fracturing, in which drilling fluids and sand are injected under high pressure to break up rock and release gas.

08/27/2009 2 comments

Renewable Energy

Plastic Industry Needs To Adopt Clean Technology

written by Ceylan Thomson

The amount of plastic that will be produced this decade will nearly equal the total produced in the 20th century, and the substance is increasingly taking a toll on human health and the environment, a new study says.

Reporting in the journal Philosophical Transactions of the Royal Society B, more than 60 scientists found the following: Chemicals added to plastics are increasingly absorbed by humans, altering hormones and affecting fetal development and other physiological processes; millions of tons of plastic debris are ingested by hundreds of animal and fish species, clogging their digestive systems and infusing their systems with chemicals; floating plastic debris can last thousands of years in oceans and transport invasive species; plastic in landfills leaches harmful chemicals into groundwater; and 8 percent of world oil production goes into manufacturing plastics.

07/02/2009 2 comments