Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Protecting Food Crops From Soil Contaminants

03.03.2015

Chemist uses natural soil components to trap pollutants

Using natural soil components to trap pollutants will allow producers to control soil contaminants and reuse draining water while protecting their agricultural crops, according to Mohamed Elsayed, a Fulbright Postdoctoral Scholar at South Dakota State University’s chemistry and biochemistry department.


Mohamed Elsayed, a Fulbright Postdoctoral Scholar at South Dakota State University’s chemistry and biochemistry department, uses ultrafiltration techniques to break humic acid down into smaller molecules that can then combine with clay minerals in the soil to trap pollutants.

Elsayed, a researcher from the Soil Water and Environmental Research Institute at the Agricultural Research Center in Egypt, will present his work at the American Chemical Society National Meeting March 22-26 in Denver.

If crops are sown in polluted soil, the plants absorb the contaminants, Elsayed explained. These are then transferred to humans when they consume the vegetables or grains.

Because of water shortages in Egypt, Elsayed said, “we need to use water again and again, but before we reuse it, we need to clean it.”

His research seeks to increase the ability of humic acid to adsorb or trap pollutants in combination with either of two clay minerals—kaolinite or montmorillonite. Humic acid is one of the major organic components in soil and is also used as fertilizer.

“The idea is to use natural materials to reduce the pollutants,” he explained. “Natural components are cheaper, more easily available.” Plus, artificial ingredients run the risk of adding to the pollution problems—natural ingredients don’t.

By breaking humic acid into smaller molecules, a process called fractionation, Elsayed hopes to improve the interaction between humic acid and clay minerals and, therefore, their ability to trap pollutants, particularly heavy metals. This project is a continuation of his doctoral research.

If fractionation produces good results, the next step will be to determine the optimum humic acid fractionation combination for each clay mineral to enhance the trapping process, Elsayed explained.

The long-range vision is for producers to apply humic acid, either in solid or liquid form, to enhance soil properties.

“These compounds would capture the heavy metals and organic pollutants so the plant won’t take it up,” he said. The resulting crop would be contaminant-free.

About South Dakota State University
Founded in 1881, South Dakota State University is the state’s Morrill Act land-grant institution as well as its largest, most comprehensive school of higher education. SDSU confers degrees from eight different colleges representing more than 175 majors, minors and specializations. The institution also offers 32 master’s degree programs, 15 Ph.D. and two professional programs. The work of the university is carried out on a residential campus in Brookings, at sites in Sioux Falls, Pierre and Rapid City, and through Cooperative Extension offices and Agricultural Experiment Station research sites across the state.

Contact Information
Christie Delfanian
Research Writer
christie.delfanian@sdstate.edu

Phone: 605-688-4541
Mobile: 605-651-4183
Mohamed.Elsayed@sdstate.edu

Christie Delfanian | newswise
Further information:
http://www.sdstate.edu

More articles from Agricultural and Forestry Science:

nachricht Raiding the rape field
23.05.2018 | Julius-Maximilians-Universität Würzburg

nachricht New technique reveals details of forest fire recovery
17.05.2018 | DOE/Brookhaven National Laboratory

All articles from Agricultural and Forestry Science >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Powerful IT security for the car of the future – research alliance develops new approaches

The more electronics steer, accelerate and brake cars, the more important it is to protect them against cyber-attacks. That is why 15 partners from industry and academia will work together over the next three years on new approaches to IT security in self-driving cars. The joint project goes by the name Security For Connected, Autonomous Cars (SecForCARs) and has funding of €7.2 million from the German Federal Ministry of Education and Research. Infineon is leading the project.

Vehicles already offer diverse communication interfaces and more and more automated functions, such as distance and lane-keeping assist systems. At the same...

Im Focus: Molecular switch will facilitate the development of pioneering electro-optical devices

A research team led by physicists at the Technical University of Munich (TUM) has developed molecular nanoswitches that can be toggled between two structurally different states using an applied voltage. They can serve as the basis for a pioneering class of devices that could replace silicon-based components with organic molecules.

The development of new electronic technologies drives the incessant reduction of functional component sizes. In the context of an international collaborative...

Im Focus: LZH showcases laser material processing of tomorrow at the LASYS 2018

At the LASYS 2018, from June 5th to 7th, the Laser Zentrum Hannover e.V. (LZH) will be showcasing processes for the laser material processing of tomorrow in hall 4 at stand 4E75. With blown bomb shells the LZH will present first results of a research project on civil security.

At this year's LASYS, the LZH will exhibit light-based processes such as cutting, welding, ablation and structuring as well as additive manufacturing for...

Im Focus: Self-illuminating pixels for a new display generation

There are videos on the internet that can make one marvel at technology. For example, a smartphone is casually bent around the arm or a thin-film display is rolled in all directions and with almost every diameter. From the user's point of view, this looks fantastic. From a professional point of view, however, the question arises: Is that already possible?

At Display Week 2018, scientists from the Fraunhofer Institute for Applied Polymer Research IAP will be demonstrating today’s technological possibilities and...

Im Focus: Explanation for puzzling quantum oscillations has been found

So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics

Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

In focus: Climate adapted plants

25.05.2018 | Event News

Save the date: Forum European Neuroscience – 07-11 July 2018 in Berlin, Germany

02.05.2018 | Event News

Invitation to the upcoming "Current Topics in Bioinformatics: Big Data in Genomics and Medicine"

13.04.2018 | Event News

 
Latest News

In focus: Climate adapted plants

25.05.2018 | Event News

Flow probes from the 3D printer

25.05.2018 | Machine Engineering

Less is more? Gene switch for healthy aging found

25.05.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>