Spectroscopy and Spectral Analysis, Volume. 41, Issue 1, 278(2021)
Study on Repairing Mechanism of Wind Quenching Slag Powder in Heavy Metal Contaminated Soil by XRD and SEM
Figures & Tables(8)
Fig. 1. SEM of mixture of wind quenching slag powder-heavy metal contaminated soil
(a): 5#; (b): 6#; (c): 3#; (d): 7#
Fig. 2. XRD of mixture of wind quenching slag powder-heavy metal contaminated soil
(a): 8#; (b): 9#; (c): 3#; (d): 10#
Table 1. Experimental scheme
View tableView in ArticleTable 1. Experimental scheme
No. Wind quenching slag
grinding time/minWind quenching slag
powder content/%Heavy metal contaminated
soil content/%Solid-liquid
ratioCuring
time/d1# 60 20 80 3:1 14 2# 80 20 80 3:1 14 3# 100 20 80 3:1 14 4# 120 20 80 3:1 14 5# 100 10 90 3:1 14 6# 100 15 85 3:1 14 7# 100 25 75 3:1 14 8# 100 20 80 3:1 1 9# 100 20 80 3:1 7 10# 100 20 80 3:1 28
Table 2. Leaching concentrations of heavy metal in heavy metal contaminated soil and wind quenching slag
View tableView in ArticleTable 2. Leaching concentrations of heavy metal in heavy metal contaminated soil and wind quenching slag
No. Leaching concentration of heavy metal/(mg·L-l) Cd Cu Pb Ni Zn Heavy metal contaminated soil 7.87 5.56 14.23 7.09 47.42 Wind quenching slag 0.09×10-3 13.45×10-3 2.97×10-3 78.92×10-3 8.69×10-3 Leaching concentration limit (GB5085.3—2007) 1 100 5 5 100
Table 3. Effect of the wind quenching slag grinding time on the repairing of heavy metal contaminated soil
View tableView in ArticleTable 3. Effect of the wind quenching slag grinding time on the repairing of heavy metal contaminated soil
No. Wind quenching
slag grinding
time/minLeaching concentration of heavy metal in
wind quenching slag fine powder-heavy
metal contaminated soil mixture/(mg·L-1)Effect of wind quenching slag fine
powder curing heavy metals in heavy
metal contaminated soil/%Cd Cu Pb Ni Zn Cd Cu Pb Ni Zn 1# 60 1.17 0.86 2.11 1.09 7.26 85.13 84.53 85.17 84.62 84.69 2# 80 0.92 0.67 1.76 0.85 5.62 88.31 87.95 87.63 88.01 88.15 3# 100 0.58 0.45 1.18 0.53 3.95 92.63 91.91 91.71 92.52 91.67 4# 120 0.49 0.40 1.02 0.46 3.34 93.77 92.81 92.83 93.51 92.96
Table 4. Effect of the wind quenching slag grinding time on the particle size distribution and pore structure of wind quenching slag powder
View tableView in ArticleTable 4. Effect of the wind quenching slag grinding time on the particle size distribution and pore structure of wind quenching slag powder
Wind quenching
slag grinding
time/minParticle size distribution of wind quenching slag Pore structure of wind quenching slag d 10/
μmd 50/
μmd 90/
μmZ =d 90/d 10H =(d 90-d 10)/d 50比表面积/
(m2·g-1)孔体积/
(cm3·g-1)孔径/
nm60 2.53 16.06 45.17 17.85 2.66 0.244 4.954×10-3 1.56×102 80 2.48 15.29 42.68 17.21 2.63 0.266 4.472×10-3 1.37×102 100 2.18 14.04 37.23 17.08 2.50 0.289 3.721×10-3 1.24×102 120 2.08 13.47 35.41 17.02 2.47 0.282 3.688×10-3 1.21×102
Table 5. Effect of the wind quenching slag powder content on the repairing of heavy metal contaminated soil
View tableView in ArticleTable 5. Effect of the wind quenching slag powder content on the repairing of heavy metal contaminated soil
No. Wind quenching
slag grinding
time/minLeaching concentration of heavy metal in
wind quenching slag fine powder-heavy
metal contaminated soil mixture/(mg·L-1)Effect of wind quenching slag fine
powder curing heavy metals in heavy
metal contaminated soil/%Cd Cu Pb Ni Zn Cd Cu Pb Ni Zn 5# 10 1.59 1.06 3.13 1.48 10.62 79.80 80.94 78.00 79.13 77.60 6# 15 1.26 0.83 2.36 1.14 8.05 83.99 85.07 83.42 83.92 83.02 3# 20 0.58 0.45 1.18 0.53 3.95 92.63 91.91 91.71 92.52 91.67 7# 25 0.52 0.41 1.13 0.47 3.82 93.39 92.63 92.06 93.37 91.94
Table 6. Effect of the curing time on the repairing of heavy metal contaminated soil
View tableView in ArticleTable 6. Effect of the curing time on the repairing of heavy metal contaminated soil
No. Curing
time/dLeaching concentration of heavy metal in
wind quenching slag fine powder-heavy
metal contaminated soil mixture/(mg·L-1)Effect of wind quenching slag fine
powder curing heavy metals in heavy
metal contaminated soil/%Cd Cu Pb Ni Zn Cd Cu Pb Ni Zn 8# 1 2.51 0.52 3.74 1.12 8.84 68.11 90.65 73.72 84.20 81.36 9# 7 1.77 0.48 2.36 0.55 4.21 77.51 91.37 83.42 92.24 91.12 3# 14 0.58 0.45 1.18 0.53 3.95 92.63 91.91 91.71 92.52 91.67 10# 28 0.55 0.41 1.12 0.49 3.77 93.01 92.63 92.13 93.09 92.05
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Hao ZHANG, Xian-kun YU, Xiu-ping XU, Gang YANG. Study on Repairing Mechanism of Wind Quenching Slag Powder in Heavy Metal Contaminated Soil by XRD and SEM[J]. Spectroscopy and Spectral Analysis, 2021, 41(1): 278
Paper Information
Category: Research Articles
Received: Dec. 27, 2019
Accepted: --
Published Online: Apr. 8, 2021
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