Navigation Links
Paying peanuts for clean water
Date:11/8/2007

Peanut husks, one of the biggest food industry waste products, could be used to extract environmentally damaging copper ions from waste water, according to researchers in Turkey. Writing in the Inderscience publication the International Journal of Environment and Pollution, the team describes how this readily available waste material can be used to extract toxic copper ions from waste water. The discovery offers a useful alternative to simple disposal of this ubiquitous food industry waste product.

Copper is an essential trace element found in many living organisms, but at high levels it is potentially harmful and when discharged at high concentration into natural water resources could pose a serious environmental threat to marine ecosystems. Various industries produce waste water containing dissolved copper(II) ions, including those that carry out metal cleaning and plating, paper pulp, paper board mills, and wood pulp production sites and the fertilizer industry.

Conventionally, various relatively sophisticated processes including copper salt precipitation, ion exchange, electrolysis, and adsorption on expensive activated carbon filters are used to remove copper ions from waste water.

Now, Duygu zsoy and colleagues in the Department of Environmental Engineering, at Mersin University, Turkey, have begun investigating the potential of several materials to absorb the dissolved form of copper from waste water. They have looked at how well untreated peanut husks and another potential cleanup material, pine sawdust, compare in absorbing copper ions from waste water.

The team measured the levels of copper ions that could be extracted from waste water at different temperatures, acidity, flow rate, and initial concentration of dissolved copper.

They found that, as expected the longer the waste water is exposed to the materials the more efficient the process. However, there is a stark difference between peanut husk extraction and pine sawdust. The peanut husks could remove 95% of the copper ions whereas the pine sawdust only achieved 44% extraction. Efficiency works best if the water is slightly acidic but temperature had little effect on efficiency.

The researchers conclude that both untreated peanut husks, a cheap waste product of the food industry and pine sawdust from the timber industry could be used in waste water cleanup to reduce significantly levels of toxic copper levels.


'/>"/>

Contact: Duygu zsoy
ozsoyhd@mersin.edu.tr
Inderscience Publishers
Source:Eurekalert

Related biology news :

1. UF scientists reveal how dietary restriction cleans cells
2. Innovative civil engineering application promises cleaner waters
3. Prolonged respiratory problems for oil spill clean-up volunteers
4. Argonne helps China create cleaner Beijing for 2008 Olympics
5. UT researcher earns $1.3M grant to study toxic cleanup at DOD sites
6. Freshwater supplies threatened in central Pacific
7. University of Oregon researcher finds that on waters surface, nitric acid is not so tough
8. Safe water: simpler method for analyzing radium in water samples cuts testing time
9. Researchers find new taste in fruit flies: carbonated water
10. Low oxygen in coastal waters impairs fish reproduction
11. Extra gene copies were enough to make early humans mouths water
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/1/2017)... Massachusetts , February 1, 2017 IDTechEx ... events on emerging technology, announces the availability of a new report, ... Continue Reading ... ... in industrial and collaborative robots. Source: IDTechEx Report "Sensors for Robotics: ...
(Date:1/30/2017)... --  Invitae Corporation (NYSE: NVTA ), ... announced that it will report its fourth quarter and ... Monday, February 13, 2017, and Invitae,s management team will ... Eastern / 1:45 p.m. Pacific. During ... results, guidance, and recent developments and will spend the ...
(Date:1/26/2017)... , Jan. 26, 2017  Acuity Market ... for Biometrics and Digital Identity".  Acuity characterizes 2017 ... identity when increased adoption reflects a new understanding ... "Biometrics and digital identity are often ... Maxine Most , Principal of Acuity Market ...
Breaking Biology News(10 mins):
(Date:2/22/2017)... LOS ANGELES, CA (PRWEB) , ... February 22, ... ... company, today announced that is has acquired Kendall Research Systems, LLC ... of Technology (MIT) that develops neural interface technology for research and clinical applications. ...
(Date:2/22/2017)... ... February 22, 2017 , ... ProMIS Neurosciences (“ProMIS” or ... neurodegenerative diseases, today announced it has issued a scientific white paper entitled “Results ... a series of commentaries from ProMIS’s scientific team offering insight into the Company’s ...
(Date:2/22/2017)... 2017 Aethlon Medical, Inc. (Nasdaq: ... that validated the ability of the Aethlon Hemopurifier® to ... mortality in immune-suppressed sepsis patients and also contribute to ... objective of the study was to validate the ... (EBV) and Herpes Simplex virus 1 (HSV1) by the ...
(Date:2/21/2017)... , Feb. 21, 2017 Synthetic Biologics, Inc. ... to preserve the microbiome to protect and restore the health of ... year ended December 31, 2016 on Thursday, March 2, 2017, and ... EST. The dial-in information for the call is as follows: ... ...
Breaking Biology Technology: