According to blogger Sarick Matzen, it is much more environmentally-friendly to leave the soil in place and let plants do the work. Pulling out contaminated soils from old industrial sites, mining, or even a chemical spill, can take more energy in the form of bulldozers. Plus, that soil is still contaminated.
“When we want to pull contaminants out of soil, we turn to superhero plants known as hyperaccumulators,” says Matzen. “These special plants take up pollutants and store the toxins in their leaves. About 450 hyperaccumulators are known to exist. They can accumulate arsenic, nickel, cadmium, and other metals.”
“From fancy ferns to common poplars, phytoremediation offers great potential to sustainably clean up and preserve precious soil for future generations. Because plants are living beings, developing these plant-based technologies for practical use takes time and effort. Most research to date involves short term, controlled experiments. That means that scientists must do large scale pilot projects to launch phytoremediation towards commercial remediation use. Think about old, polluted industrial sites in your area. Clean up now would likely involve excavators and dump trucks full of hazardous waste. Let’s work towards a greener future where remediation professionals carefully tend fields of green plants!” Matzen works at University of California, Berkeley.
To learn more about phytoremediation of soils, read the entire post here: https://soilsmatter.wordpress.com/2019/10/15/what-is-phytoremediation. SSSA also has an entire section of their website devoted to soil contamination and solutions: https://www.soils.org/discover-soils/soils-in-the-city/soil-contaminants
Follow SSSA on Facebook at https://www.facebook.com/SSSA.soils, Twitter at SSSA_Soils. SSSA has soils information on www.soils.org/discover-soils, for teachers at www.soils4teachers.org, and for students through 12th grade, www.soils4kids.org.
The Soil Science Society of America (SSSA) is a progressive international scientific society that fosters the transfer of knowledge and practices to sustain global soils. Based in Madison, WI, and founded in 1936, SSSA is the professional home for 6,000+ members and 1,000+ certified professionals dedicated to advancing the field of soil science. The Society provides information about soils in relation to crop production, environmental quality, ecosystem sustainability, bioremediation, waste management, recycling, and wise land use.
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