Phytoremediation of heavy metal-contaminated soil by switchgrass: A comparative study utilizing different composts and coir fiber on pollution remediation, plant productivity, and nutrient leaching
Özet
We investigated the effects of organic amendments (thermophilic compost, vermicompost, and coconut coir) on the bioavailability of trace heavy metals of Zn, Cd, Pb, Co, and Ni from heavy metal-spiked soils under laboratory conditions. To test switch grass (Panicum virgatum) as a potential crop for phytoremediation of heavy metal from soil, we investigated whether the addition of organic amendments promoted switch grass growth, and consequently, uptake of metals. Compost is a valuable soil amendment that supplies nutrients for plant establishment and growth, which is beneficial for phytoremediation. However, excess application of compost can result in nutrient leaching, which has adverse effects on water quality. We tested the nutrient leaching potential of the different organic amendments to identify trade-offs between phytoremediation and water quality. Results showed that the amendments decreased the amount of bioavailable metals in the soils. Organic amendments increased soil pH, electrical conductivity (EC), and soil nutrient status. Switch grass shoot and root biomass was significantly greater in the amended soils compared to the non-amended control. Amended treatments showed detectable levels of heavy metal uptake in switch grass shoots, while the control treatment did not produce enough switch grass biomass to measure uptake. Switch grass uptake of certain heavy metals, and concentrations of some leachate nutrients significantly differed among the amended treatments. By improving soil properties and plant productivity and reducing heavy metal solubility that can otherwise hamper plant survival, organic amendments can greatly enhance phytoremediation in heavy metal-contaminated soils. © 2019 by the authors. Licensee MDPI, Basel, Switzerland.
Cilt
16Sayı
7Koleksiyonlar
İlgili Öğeler
Başlık, yazar, küratör ve konuya göre gösterilen ilgili öğeler.
-
Influence of municipal solid waste compost application on heavy metal content in soil
Yüksel, Orhan (Springer, 2015)Municipal solid waste composts (MSWC) are widely used over agricultural lands as organic soil amendment and fertilizer. However, MSWC use may result in various adverse impacts over agricultural lands. Especially, heavy ... -
Potential toxicological risks of industrial heavy metals on wildlife ecology: A review to draw attention to an important ecological region
Yipel, Mustafa; Tekeli, İbrahim Özan (Certex, INCDTP-ICPI, 2016)Many pollutants like heavy metals that are created as a result of increasing population and industrial production in parallel with the increasing population effects the ecological balance adversary with each passing day. ... -
Farklı PH derecelerine sahip topraklarda çöp kompostunun bazı toprak özellikleri ile bitki ve toprakta ağır metla içeriğine etkisi
Atav, Volkan (2018)Kompostlama belediye katı atıklarının yok edilmesi için en fazla tercih edilen yöntemlerden birisidir. Belediye katı atıklarından elde edilen çöp kompostları birçok ülkede organik toprak düzenleyici ve gübre olarak tarım ...