Comparisons of pollution characteristics, emission situations, and mass loads for heavy metals in the manures of different livestock and poultry in China

Liu, Wang-Rong; Zeng, Dong; She, Lei; Su, Wen-xing; He, Defeng; Wu, Genyi; Ma, Xiao-Rui; Jiang, Shan; Jiang, Cai-Hong; Ying, Guang‐Guo

doi:10.1016/j.scitotenv.2020.139023

Cited by 205 publications

(73 citation statements)

References 47 publications

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“…According to the eigenvalue >0.95, two main components for heavy metals in soils were extracted, and the contribution rate of the accumulated variance was 72% (Table 4). The elements As, Cd, Pb and Zn had higher loads in the first principal component (PCA1) with a contribution rate of 53% of the total variance with relatively strong associations between the four metals, this could indicate that the heavy metal contamination of soils mainly originates from the human activities such as agricultural practices, the repeated and prolonged application of animal manure (sheep, cattle and poultry) causes the incorporation of As, Cd, Pb and Zn in soils, as reported from the previous studies in China (Liu et al 2020, Yang et al 2017, Zhang et al 2012).…”

Section: Identification Of Sources Of Heavy Metals In High Andean Soilssupporting

confidence: 65%

Heavy Metals in Agriculture Soils from High Andean Zones and Potential Ecological Risk Assessment in Peru's Central Andes

Orellana¹,

Custodio²,

Bastos³

et al. 2020

J. Ecol. Eng.

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Soil is exposed to heavy metals that are associated with the anthropogenic activities, and is currently an environmental and food safety problem. The concentration and source of heavy metals in soils, the level of contamination and the potential for ecological risk in high Andean ecosystems were evaluated. The soil samples were collected from the surface part in which Andean crops were sown and the concentration of As, Cd, Pb, Fe and Zn was quantified. The concentrations of heavy metals in soils did not exceed the threshold of the national and international standard, while As, Pb and Zn exceeded the values of the background. The contamination factor (CF) values showed a high level of contamination for As and moderate for Pb and Zn. The geoaccumulation index (Igeo) values showed that As had the highest load of accumulated pollutants in soils by anthropogenic contribution. A moderate degree of contamination (CD) was found in 61.5% of the sampling sites. The potential ecological risk index (RI) showed that the soils of the study area presented a moderate to low potential ecological risk, and As was the main pollutant in high Andean soils. As, Pb and Zn occurring in high Andean soils mainly originated from human activities such as agricultural practices, whereas Fe mainly originated from the parent material of the soil. The effects of the use of organic and inorganic fertilizers on the accumulation of heavy metals in and Andean agricultural products must be analyzed and verified to protect the health of the inhabitants and the environment.

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Section: Identification Of Sources Of Heavy Metals In High Andean Soilssupporting

confidence: 65%

Heavy Metals in Agriculture Soils from High Andean Zones and Potential Ecological Risk Assessment in Peru's Central Andes

Orellana¹,

Custodio²,

Bastos³

et al. 2020

J. Ecol. Eng.

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“…And all cases show high linear correlation coefficient, R 2 > 0.95. This is consistent with the results obtained by other researchers 9,13 . The E α calculated by the KAS method is slightly smaller than that by the FWO method, and the E α calculated by the Friedman method is larger than that by the other two methods.…”

Section: Resultssupporting

confidence: 92%

“…It is noteworthy that livestock manure, including cow manure (CM), owns its unique advantages like renewable, large reserves and no seasonal restriction 7,8 . In China, the annual production of livestock and poultry manure is even up to 3.8 billion tons approximately, of which CM accounted for 37% or so 9 . Therefore, how to deal with these organic wastes reasonably and use them effectively has been an issue to which the whole society pays much attention.…”

Section: Introductionmentioning

confidence: 99%

Thermal conversion behavior and nitrogen‐containing gas products evolution during co‐pyrolysis of cow manure and coal: A thermal gravimetric analyzer/differential scanning calorimetry–mass spectrometer investigation

Bai

Wang

et al. 2021

Asia-Pacific J Chem Eng

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The kinetics and thermal behaviors of cow manure (CM) and Meihuajing bituminous coal (MHJ) blending from room temperature to 950°C were investigated by thermal gravimetric analyzer (TGA) coupled with differential scanning calorimetry (DSC) and mass spectrometer (MS). TG curves show that the high heating rate accelerates thermal decomposition rate, and the position of differential thermal gravity (DTG) peaks shifts to a higher temperature. Owing to the heat transfer limitation phenomenon, the residual weight of CM is only 40.38% with the heating rate of 1°C/min in comparison with other heating rate. DSC takes more time to reach a steady state than TGA. Gaseous evolution curves of HCN and NH3 were obtained during the pyrolysis of blends based on TG–MS experiments. With the increased heating rate, the emissions increased a lot due to the secondary reaction of volatiles. The Eα of 1C1M obtained using Kissinger–Akahira–Sunose (KAS), Flynn–Wall–Ozawa (FWO), Friedman, and Kissinger methods is within 124.58–317.18, 121.97–321.11, 150.28–331.64, and 209.26 kJ/mol, respectively. The kinetic parameters calculated based on four model‐free kinetic modeling methods shows good agreement. And the thermodynamic parameters were obtained and discussed under different conversion rates. This work is greatly important to understand the co‐prolysis mechanism of CM and coal and to design the pyrolysis reactors.

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“…Higher concentrations of As, Pb, Fe and Zn were observed in the following order: Quilcas > Ricrán > Jarpa > Comas. The presence [10] [47] and to air pollution [48]. Therefore, it is very important to determine the sources, distribution and level of contamination of the high Andean soils.…”

Section: Discussionmentioning

confidence: 99%

Heavy Metals in Native Potato and Health Risk Assessment in Highland Andean Zones of Junín, Peru

Orellana¹,

Bastos²,

Cuadrado³

et al. 2020

JEP

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Heavy metals are transferred from the abiotic environment to living organisms, accumulate in food, contaminate the food chain, and are an important route of human exposure involving a potential health risk. In this study, the concentrations of heavy metals (Cd, Fe, Pb, Zn and As) in agricultural soils and tubers of Solanum tuberosum spp. andigena (native potato) were evaluated. Also, an assessment of the health risk associated with the daily intake by the local population was performed in the four districts of the department of Junín, between altitudes of 3800 m to 4200 m. The heavy metals concentrations in soils with native potato cultivation followed the following decreasing order of Fe > Zn > Pb > As > Cd, with values below national standards. The heavy metals content in native potatoes was below the limits recommended by international standards with the exception of Pb. The bioconcentration factor (BCF) for the two native potato varieties in decreasing order was Zn > Cd > Pb > As > Fe, all less than 0.5. The estimated daily intake of metals (EDIM) in adults and children through the consumption of native potatoes was higher for Fe and Zn. The threshold carcinogenic risk values (TCR) for As exceeded the safety limits 1 × 10 −4. It is concluded that the residents in the four high Andean localities would be exposed to carcinogenic adverse health effects associated with the intake of native potatoes. It is important to monitor the concentration of As and other heavy metals in the Andean soils and crops in order to implement a soil and crop management program to ensure food quality.

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Comparisons of pollution characteristics, emission situations, and mass loads for heavy metals in the manures of different livestock and poultry in China

Cited by 205 publications

References 47 publications

Heavy Metals in Agriculture Soils from High Andean Zones and Potential Ecological Risk Assessment in Peru's Central Andes

Heavy Metals in Agriculture Soils from High Andean Zones and Potential Ecological Risk Assessment in Peru's Central Andes

Thermal conversion behavior and nitrogen‐containing gas products evolution during co‐pyrolysis of cow manure and coal: A thermal gravimetric analyzer/differential scanning calorimetry–mass spectrometer investigation

Heavy Metals in Native Potato and Health Risk Assessment in Highland Andean Zones of Junín, Peru

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Comparisons of pollution characteristics, emission situations, and mass loads for heavy metals in the manures of different livestock and poultry in China

Cited by 205 publications

References 47 publications

Heavy Metals in Agriculture Soils from High Andean Zones and Potential Ecological Risk Assessment in Peru's Central Andes

Heavy Metals in Agriculture Soils from High Andean Zones and Potential Ecological Risk Assessment in Peru's Central Andes

Thermal conversion behavior and nitrogen‐containing gas products evolution during co‐pyrolysis of cow manure and coal: A thermal gravimetric analyzer/differential scanning calorimetry–mass spectrometer investigation

Heavy Metals in Native Potato and Health Risk Assessment in Highland Andean Zones of Jun&#237;n, Peru

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Heavy Metals in Native Potato and Health Risk Assessment in Highland Andean Zones of Junín, Peru