TY - JOUR
T1 - PAHs and heavy metals in the surrounding soil of a cement plant Co-Processing hazardous waste
AU - Wang, Chen
AU - Yang, Zhenzhou
AU - Zhang, Yanhao
AU - Zhang, Zuotai
AU - Cai, Zongwei
N1 - Funding Information:
We gratefully acknowledge support from the National Natural Science Foundation of China (No. 51522401 ) and Shenzhen Science and Technology Innovation Committee (No. ZDSY S201602261932201 ).
PY - 2018/11
Y1 - 2018/11
N2 - The Chinese government is encouraging domestic cement producers to move from traditional coal power sources to the co-processing of waste as the primary energy source for the industry. In this study, 32 samples collected from the soil surrounding a cement plant in Beijing were analyzed for the presence of 16 U.S. EPA priority polycyclic aromatic hydrocarbons (PAHs) and 12 heavy metals. Ten samples were selected for polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs) analysis. The pollution distribution patterns, sources, and potential risks to human health and the environment were investigated and evaluated. The highest concentrations of PCDD/Fs occurred 1200 m downwind from the cement plant. The levels of ∑16 PAHs ranged from 130.6 to 1134.3 μg kg−1 in the sampled soils. Source identification analysis suggested that the cement plant was the most likely source of PAH contamination. The concentrations of most of the heavy metals detected in the sampled soils were close to background levels, except for the levels of cadmium (Cd) and mercury (Hg), which were, on average, two times and six times higher than background values, respectively. The co-incineration of sludge, coal, and hazardous waste in the cement plant is a major contributing cause for the high levels of Hg in the surrounding soil. Risk assessment models, both the incremental lifetime cancer risks (ILCRs) for PAHs and the potential ecological risk index (RI) for heavy metals, indicate potential risks to the population and the environment surrounding the cement plant.
AB - The Chinese government is encouraging domestic cement producers to move from traditional coal power sources to the co-processing of waste as the primary energy source for the industry. In this study, 32 samples collected from the soil surrounding a cement plant in Beijing were analyzed for the presence of 16 U.S. EPA priority polycyclic aromatic hydrocarbons (PAHs) and 12 heavy metals. Ten samples were selected for polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs) analysis. The pollution distribution patterns, sources, and potential risks to human health and the environment were investigated and evaluated. The highest concentrations of PCDD/Fs occurred 1200 m downwind from the cement plant. The levels of ∑16 PAHs ranged from 130.6 to 1134.3 μg kg−1 in the sampled soils. Source identification analysis suggested that the cement plant was the most likely source of PAH contamination. The concentrations of most of the heavy metals detected in the sampled soils were close to background levels, except for the levels of cadmium (Cd) and mercury (Hg), which were, on average, two times and six times higher than background values, respectively. The co-incineration of sludge, coal, and hazardous waste in the cement plant is a major contributing cause for the high levels of Hg in the surrounding soil. Risk assessment models, both the incremental lifetime cancer risks (ILCRs) for PAHs and the potential ecological risk index (RI) for heavy metals, indicate potential risks to the population and the environment surrounding the cement plant.
KW - Cement plant
KW - Environmental risk assessment
KW - Hazardous waste
KW - Heavy metals
KW - Polycyclic aromatic hydrocarbons
KW - Soil
UR - http://www.scopus.com/inward/record.url?scp=85049538719&partnerID=8YFLogxK
U2 - 10.1016/j.chemosphere.2018.06.177
DO - 10.1016/j.chemosphere.2018.06.177
M3 - Journal article
C2 - 30005346
AN - SCOPUS:85049538719
SN - 0045-6535
VL - 210
SP - 247
EP - 256
JO - Chemosphere
JF - Chemosphere
ER -