Boron Adsorption on Lime Soil and Phytoremediation of Lime Soil by Potato Plant (Solanum Tuberosum L.)

Abstract

Boron adsorption onto lime soil from Balıkesir University campus was studied to evaluate the effects of irrigation water cations (Ca2+, Mg2+, K+ and Na+) and soil clays (kaolinite, montmorillonite, clinoptilolite clays). The concentrations for cations and boron were in the range of 0-1,450 mg/L and 0-700 mg/L, respectively. The experimental maximum boron capacity for cation effect was 0.764 mg/g and this value was seen to obtain at high cation and middle boron concentration (304.49 mg/L) in optimization graph. The maximum experimental boron capacity for clay effect was 1.08 mg/g and this value was obtained from optimization graph at 0.5828 g clinoptilolite, 0.1936 g montmorillonite, 0.5852 g kaolinite amounts. The borated-soil samples were successfully phytoremediated with potato plant and maximum intake of boron by the potato plant was 2,304.8 mg/kg plant. The plant dry weights decreased by increasing soil boron concentration and the potato plants did not grow at 203.56, 303.56, 403.56 mg/kg boron concentrations exhibiting toxic effects for potato plant. The studied soil concentrations for phytoremediation was 3.56, 13.56, 23.56, 33.56, 43.56, 53.56, 103.56, 203.56, 303.56, and 403.56 mg/kg boron.

Keywords

• Boron adsorption
• Lime soil
• RSM optimization
• Phytoremediation
• Potato plant

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