An Improved SWAT for Predicting Manganese
Pollution Load at the Soil-Water Interface
in a Manganese Mine Area

Zhang, Yao; Ren, Bin; Hursthouse, Andrew; Deng, Renjian; Hou, Baolin

doi:10.15244/pjoes/78618

Cited by 16 publications

(6 citation statements)

References 17 publications

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“…The order of average concentration of the six PTEs was: Mn>Zn>Cu>Pb>Cr>Cd for rice, soybean, sweet potato, respectively. The order of average value of BCF in the three crops is: Cd>Zn>Cu>Mn>Cr>Pb, which is consistent with previous studies (Zhang et al 2018). The concentration range (average) for manganese in the different foods were: Rice 15.29 to 96.16 mg/kg (50.13 mg/kg), Soybean 13.48 to 66.64 mg/kg (41.39 mg/kg), Sweet potato 18.17 to 78.64 mg/kg (48.67 mg/kg) (Figure 3).…”

Section: Pte Concentration In Cropssupporting

confidence: 92%

Potentially toxic elements (PTEs) in crops, soil, and water near Xiangtan manganese mine, China: potential risk to health in the foodchain

Luo

Ren

Hursthouse

et al. 2019

Environ Geochem Health

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The pollution from large-scale manganese mining and associated industries in Xiangtan (south Central China), has created a significant burden on the local environment. The proximity of mining, and other industrial activity to the local population is of concern and impact of past industrial on the food chain was evaluated by the assessment of common food groups (rice, soybean, sweet potato), and the associated soil and water in the region. We focused on specific potentially toxic elements (PTEs): Mn, Pb, Cd, Cr, Cu, and Zn associated with industrial activity. Identifying the distribution of pollution, the potential significance of total health Index(THI) for local people and its spatial distribution. The study area showed severe contamination for Mn, followed by Cd and Pb, while other PTEs showed relatively light levels of pollution.When analyzing the impact on crops exceeding the tolerance limit, the dominant PTEs were Mn, Cd and Pb, with lower significance for Zn, Cu and Cr. The average THI value for adults is 4.63, while for children, is 5.17, greatly exceeding the recommended limit (HQ>1), confirming a significant health risk. In the spatial distribution of the THI the region shows strong association with the transport and industrial processing infrastructure. Long term management needs to consider remediation aligned to specific industrial operations and enhance contamination control measures of on-going activity.

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Section: Pte Concentration In Cropssupporting

confidence: 92%

Potentially toxic elements (PTEs) in crops, soil, and water near Xiangtan manganese mine, China: potential risk to health in the foodchain

Luo

Ren

Hursthouse

et al. 2019

Environ Geochem Health

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“…Combined with the engineering practice, the influence of limestone overlying soil on the test results was considered [25][26][27][28][29][30][31][32][33][34][35]. A similar model of double-layer Karst pile foundation is shown in Figure 7.…”

Section: Similarity Model Of Double Strata Batholithmentioning

confidence: 99%

“…Sustainability 2023, 15, x FOR PEER REVIEW 3.1.2. Similarity Model of Double Strata Batholith Combined with the engineering practice, the influence of limestone overly the test results was considered [25][26][27][28][29][30][31][32][33][34][35]. A similar model of double-layer Karst dation is shown in Figure 7.…”

Section: Similarity Model Of Double Strata Batholithmentioning

confidence: 99%

Experimental Study on Pile Load Transfer Considering Rice Stone Filled-In Gaps between Steel Drive Pipe and Pile Casing in Karst Region

Zhu,

Yang,

Liu

et al. 2023

Sustainability

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For a guarantee of perpendicularity and stiffness in piles in Karst areas, full rotary cast-in-place piles are often utilized, steel pipes are rotarily driven into a stratum, and inner-steel pile casing is positioned. With the engineering background of the bridge piles of Guinan high-speed railway in Guangxi autonomous region, the space between steel drive pipe is filled with rice stones, the load-transfer mechanism of which was studied. An apparatus was designed for pullout of the drive pipe, rice stones are replaced with coarse stones, a simplified organic glass-pipe model is put forward, another similar indoor stratigraphic model is also pre-cast, and the movement of coarse sands and load transfer is studied with two models. The quantity of sands is calculated using back analysis through reappearance and the Rhino model: the first one is estimated using a reproduction of the pullout procedure, the second is calculated through the Rhino model based on the observation of the shape of sand in caves. When the drive pipe is pulled out, some coarse sand flows into the Karst caves and becomes loose, while load is applied on the top of the pile. The movement of coarse sand develops further, and more coarse sand flows into caves close to the bottom; this leads to a reduction its frictional resistance, and the axial force of the pile increases closer to the upper position of the cave, whereas the axial force of the pile is concentrated almost constantly close to the bottom of the cave. Comparing the end resistance and the frictional resistance, coarse sand can bear pile load to a great extent.

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“…For example, many scholars evaluated the overall impact of the environment based on the shear creep failure of rocks under complex conditions and the evolution law of rock failure [7][8][9][10]. According to the feedback results, the experimental process and analysis method were optimized [11][12][13][14][15], and advanced experimental methods and perfect analysis theory were proposed [16][17][18][19][20]. Then, in order to measure and efficiently estimate the mechanical properties of rock materials under various conditions, many scholars used acoustic waves in real-time and non-destructive detection and monitoring applications to study the mechanical strength and macro-and microstructural characteristics of rock [21].…”

Section: Introductionmentioning

confidence: 99%

Study on the Damage Model of Non-Persistent Jointed Rock Mass under the Coupling of Freeze–Thaw and Shear

Lei¹,

Chen

et al. 2023

Materials

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Considering that a jointed rock mass in a cold area is often affected by periodic freeze–thaw cycles and shear failure, definitions for the mesoscopic and macroscopic damage to a jointed rock mass under the coupling of freeze–thaw and shear are proposed, and the damage mechanism is verified according to experimental results. The results show that: (1) the jointed rock specimens increase macro-joints and meso-defects, the mechanical properties deteriorate significantly under freeze–thaw cycles, and the damage degree becomes more and more significant with the increases in freeze–thaw cycles and joint persistency. (2) When the number of freeze–thaw cycles is constant, the total damage variable value gradually increases with the increase in joint persistency. The damage variable difference in specimens with different persistency is distinct, which is gradually reduced in the later cycles, indicating a weakening influence of persistency on the total damage variable. (3) The shear resistance of non-persistent jointed rock mass in a cold area is determined by the coupling effect of meso-damage and frost heaving macro-damage. The coupling damage variable can accurately describe the damage variation law of jointed rock mass under freeze–thaw cycles and shear load.

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An Improved SWAT for Predicting Manganese Pollution Load at the Soil-Water Interface in a Manganese Mine Area

Cited by 16 publications

References 17 publications

Potentially toxic elements (PTEs) in crops, soil, and water near Xiangtan manganese mine, China: potential risk to health in the foodchain

Potentially toxic elements (PTEs) in crops, soil, and water near Xiangtan manganese mine, China: potential risk to health in the foodchain

Experimental Study on Pile Load Transfer Considering Rice Stone Filled-In Gaps between Steel Drive Pipe and Pile Casing in Karst Region

Study on the Damage Model of Non-Persistent Jointed Rock Mass under the Coupling of Freeze–Thaw and Shear

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