Navigation Links
Cleansing toxic waste -- with vinegar
Date:3/3/2009

Engineers and environmental scientists at the University of Leeds are developing methods of helping contaminated water to clean itself by adding simple organic chemicals such as vinegar.

The harmful chromium compounds found in the groundwater at sites receiving waste from former textiles factories, smelters, and tanneries have been linked to cancer, and excessive exposure can lead to problems with the kidneys, liver, lungs and skin.

The research team, led by Dr Doug Stewart from the School of Civil Engineering and Dr Ian Burke from the School of Earth and Environment, has discovered that adding dilute acetic acid (vinegar) to the affected site stimulates the growth of naturally-occurring bacteria by providing an attractive food source. In turn, these bacteria then cleanse the affected area by altering the chemical make-up of the chromium compounds to make them harmless.

"The original industrial processes changed these chemicals to become soluble, which means they can easily leach into the groundwater and make it unsafe, says Dr Burke. "Our treatment method reconverts the oxidised chromate to a non-soluble state, which means it can be left safely in the ground without risk to the environment. As it is no longer 'bio-available' it doesn't present any risk to the surrounding ecosystem."

Chromate chemicals have previously been successfully treated in situ in neutral Ph conditions, but this study is unique in that it concentrates on extremely alkaline conditions, which are potentially much more difficult to treat.

The current favoured method of dealing with such groundwater contaminants is to remove the soil to landfill, which can be costly, both financially and in terms of energy usage. The Leeds methods being developed will allow treatment to take place on site, which is safer, more energy efficient and much cheaper.

Dr Stewart says: "Highly alkaline chromium-related contaminants were placed in inadequate landfi
'/>"/>

Contact: Jo Kelly
jokelly@campuspr.co.uk
44-113-258-9880
University of Leeds
Source:Eurekalert

Page: 1 2

Related biology news :

1. Genetic differences in clover make one type toxic
2. UT researcher earns $1.3M grant to study toxic cleanup at DOD sites
3. Scientists ramp up ability of poplar plants to disarm toxic pollutants
4. Toxic releases down from North American industry leaders, increasing from other facilities
5. A search for protection against chemotherapy cardiotoxicity
6. New chemical tool kit manipulates mitochondria, reveals insights into drug toxicity
7. Motor neuron disease and toxic substances: Possible link?
8. Dental chair a possible source of neurotoxic mercury waste
9. Domoic acid from toxic algal blooms may cause seizures in California sea lions
10. New oral angiogenesis inhibitor offers potential nontoxic therapy for a wide range of cancers
11. Toxic chemicals found in common scented laundry products, air fresheners
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/13/2015)... According to a recently ... & Opportunities, 2020", the global biometrics market is ... till 2020. The biometrics market is garnering attention ... review of biometric management systems. The constant development ... greater efficiency, are resulting in increasing installation of ...
(Date:4/6/2015)... , Apr. 6, 2015 NXT-ID, Inc. ... a biometric authentication company focused on the growing ... filed provisional patent 62/143028 for MINIATURE, ... ENERGY TRANSFER  NXT-ID introduces a new ... This patent surrounds the use of miniature antenna ...
(Date:4/1/2015)... 1, 2015  NXT-ID, Inc. (NASDAQ: NXTD ) ... on the growing mobile commerce market, announces the second ... is underway to early access pre-order customers. ... at retail outlets including Walmart, Target, AT&T, Dunkin, Donuts, ... was accepted at all outlets and very easy to ...
Breaking Biology News(10 mins):Global Biometrics Market to Cross US$ 21 Billion by 2020: TechSci Research 2NXT-ID Patents Miniature, Low Power Wireless Magnetic Stripe 2NXT-ID Patents Miniature, Low Power Wireless Magnetic Stripe 3NXT-ID Patents Miniature, Low Power Wireless Magnetic Stripe 4NXT-ID Reports Second Shipment of Wocket Smart Wallets Underway to Early Access Pre-order Customers and Provides User Feedback 2NXT-ID Reports Second Shipment of Wocket Smart Wallets Underway to Early Access Pre-order Customers and Provides User Feedback 3NXT-ID Reports Second Shipment of Wocket Smart Wallets Underway to Early Access Pre-order Customers and Provides User Feedback 4
... Landing is tricky: hit the ground too fast and you ... fall. Bees manage their approach by monitoring the speed of images ... the looming landing pad,s image on the retina remains constant, bees ... few moments before touch down? And how do bees adapt to ...
... WASHINGTON Catch share programs result in more ... ecological conditions, according to a new study published online ... Academy of Sciences. Employed by nations around ... divides up and allocates percentages, or shares, of the ...
... (BRONX, NY) Researchers at the Albert Einstein College ... approach for treating and healing skin abscesses caused by ... the journal PLoS One. Abscesses are deep skin ... drainage. For their new treatment strategy, the Einstein scientists ...
Cached Biology News:Final moments of bee landing tactics revealed 2Final moments of bee landing tactics revealed 3New study finds catch shares improve consistency, not health, of fisheries 2Novel nanotechnology heals abscesses caused by resistant staph bacteria 2Novel nanotechnology heals abscesses caused by resistant staph bacteria 3
(Date:4/30/2015)... WuXi PharmaTech (Cayman) Inc. ("WuXi" or the ... R&D services provider, today announced that its board of ... April 29, 2015, from a consortium (the "Consortium") led ... chairman and chief executive officer of the Company, and ... transaction (the "Transaction") involving the acquisition of all outstanding ...
(Date:4/30/2015)... April 30, 2015 SureClinical, a leader ... I. Morris has joined SureClinical’s executive team as Chief ... biotech and technology executive with over 25 years in ... companies. , Ms. Morris joins SureClinical from Marrone ... She was CFO of MBI from its founding in ...
(Date:4/29/2015)... 30, 2015 According to a ... by Product (Portable & Non-Portable), Component (Accelerometer, Proximity ... Chemical, Metal & Mining, & Others), & Geography ... is expected to reach $1,453.76 Million by 2020, ... market data tables and 92 figures spread through ...
(Date:4/29/2015)... , April 29, 2015   Doximity , the ... all US doctors as members, announced a new, instant ... "Apply Using Doximity." With one click, all US physicians ... curriculum vitae (CV) for an open job opportunity, and ... Eighty seven percent of physicians are open ...
Breaking Biology Technology:WuXi PharmaTech Announces Receipt of Proposal 2WuXi PharmaTech Announces Receipt of Proposal 3WuXi PharmaTech Announces Receipt of Proposal 4WuXi PharmaTech Announces Receipt of Proposal 5WuXi PharmaTech Announces Receipt of Proposal 6Julie I. Morris Joins SureClinical as Chief Financial Officer 2Vibration Monitoring Equipment (Portable & Non-Portable) Market worth $1,453.76 Million by 2020 - New Report by MarketsandMarkets 2Vibration Monitoring Equipment (Portable & Non-Portable) Market worth $1,453.76 Million by 2020 - New Report by MarketsandMarkets 3Vibration Monitoring Equipment (Portable & Non-Portable) Market worth $1,453.76 Million by 2020 - New Report by MarketsandMarkets 4Doximity Offering Hospitals Easy, Efficient Physician Application Tool 2
... Oct. 29 Elekta, a global leader ... Infinity*, the definitive new digital linear accelerator ... (VMAT), a very,fast Intensity Modulated Radiation Therapy ... at the 49th Annual Meeting of The ...
... FAJARDO, Puerto Rico and CORONA, Calif., Oct. ... Watson Pharmaceuticals, Inc. announced,today that under a ... Inc., Watson has launched Tilia(TM) Fe (norethindrone ... fumarate tablets), the generic,version of Warner Chilcott,s ...
... ... Exhibition, SAN ... in regenerative medicine, announced today that findings from,a preclinical study being ... Exhibition demonstrate the ability,of the Tengion Neo-Bladder Augment(TM) to restore bladder ...
Cached Biology Technology:Elekta Announces Elekta Infinity - a New System for Faster and More Precise Treatment of Cancer Tumors 2Elekta Announces Elekta Infinity - a New System for Faster and More Precise Treatment of Cancer Tumors 3Warner Chilcott and Watson Pharmaceuticals Announce Launch of Tilia(TM) Fe 2Warner Chilcott and Watson Pharmaceuticals Announce Launch of Tilia(TM) Fe 3Warner Chilcott and Watson Pharmaceuticals Announce Launch of Tilia(TM) Fe 4Preclinical Efficacy Data Demonstrate Ability of Tengion's Neo-Bladder Augment to Restore Bladder Function 2Preclinical Efficacy Data Demonstrate Ability of Tengion's Neo-Bladder Augment to Restore Bladder Function 3
Abgene's ALTO-8 is the first automated decapper/capper for Abgene Twist-Lock tubes....
Sterile, individually wrapped, 4mm Cuvettes...
... SuperScript™ III RNase H- ... an improved version of ... RT. Like SuperScript™ II ... DNA strand from single-stranded ...
S-100A10 (H-80)...
Biology Products: