Characterization and Assessment of Organic Pollution at a Fumaric Acid Chemical Brownfield Site in Northwestern China

Yang, Ye; Li, Chaokun; Chen, Zhiwen; Dong, Yingying; Zhang, Nan; Wei, Yulu; Xi, Hui; Wang, Wendong

doi:10.3390/su141912476

Cited by 4 publications

(3 citation statements)

References 41 publications

(43 reference statements)

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“…The reference value for groundwater evaluation uses the index limit of Class IV water bodies in the Groundwater Quality Standard (GB 14848-2017) [33], and the surface water evaluation refers to the Class III standard in the Surface Water Environmental Quality Standard (GB 3838-2002) [34]. According to the size of the P i value, P i ≤ 1 means that the soil/groundwater/surface water is not contaminated; P i > 1 means that the soil/groundwater/surface water is contaminated; when P i is above 5, it is severely contaminated [35].…”

Section: Evaluation Methodsmentioning

confidence: 99%

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Identification and Assessment of Groundwater and Soil Contamination from an Informal Landfill Site

Liu

Wang

2022

Sustainability

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Landfills are a potential source of local environmental pollution of all kinds, and the gradual destruction of seepage-proof structures in informal landfills will lead to contamination of the surrounding soil and groundwater environment. In this study, an informal landfill site in eastern China is used as the research object. Using technologies such as unmanned vessels and monitoring well imaging to delineate the amount and distribution of polluting media, sampling of the surrounding soil, sediment, groundwater, and surface water for testing, analysis, and evaluation is carried out visually and finely for heavy metals, petroleum hydrocarbons, volatile organic compounds (VOCs), semi-volatile organic compounds (SVOCs), and other indicators. The test results show that volatile phenols are the main contaminant species in the shallow groundwater, chlorinated hydrocarbons and benzene were prevalent in the deep groundwater, hexachlorobenzene and lead in the surface soil, and di(2-Ethylhexyl) phthalate in the deep soil (5.5 m), with a maximum exceedance of 1.24 times. Nearly 10 years have passed since the waste dumping incident at the landfill, but characteristic contaminants are still detected in the topsoil of the dumping area, which shows the long-term nature of the environmental impact of illegal dumping on the site. The study recommends that when developing a comprehensive remediation plan, the persistence of the environmental impact of the waste should be considered and appropriate remediation measures should be screened.

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Section: Evaluation Methodsmentioning

confidence: 99%

“…1,2,3-TCP was the primary exceeded pollutant in the fumaric acid brownfield site, and it could be the focus of subsequent studies on fumaric acid brownfield sites. [35] An illegal waste dumping site…”

Section: An Illegal Dumping Sitementioning

confidence: 99%

Identification and Assessment of Groundwater and Soil Contamination from an Informal Landfill Site

Liu

Wang

2022

Sustainability

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“…During the operation of large diesel engines, pollution problems can occur, such as ruptured oil pipelines, leaking storage tanks and overturned construction vehicles [1][2][3][4]. These accidents can cause damage to the surrounding soil and the ecological environment, reducing the soil's resistance to scouring, stability and load-bearing capacity [5], and making it susceptible to landslides and depressions when contaminated with diesel. Therefore, it is vital to treat contaminated soils, and treatment methods generally fall into three categories: physical, chemical and biological [6,7].…”

Section: Introductionmentioning

confidence: 99%

Improved Granite Residual Soils from a Study on Diesel Contamination in East Hunan Province

et al. 2023

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Soil can be amended with cement, lime, fly ash and other curing agents after diesel contamination. In this study, a diesel-contaminated granite residual soil with an oil content of 9% was selected and amended with cement, lime and fly ash as curing agents and their incorporation levels were varied. A straight shear test showed that 6% lime resulted in the best improvement in the contaminated soil, with a cohesive force of 122.1 kPa and an internal friction angle of 27.1°. A disintegration test revealed that the disintegration resistance of the contaminated soil was improved by 6% cement, 20% fly ash and 10% lime, with 10% lime being the most effective. SEM tests revealed that diesel fuel acted as a constant pore fluid to cause significant fragmentation and separation of the granite residual soil from flakes and blocks to smaller agglomerates and fragments. The curing agent, by increasing the physical reaction products, causes the particles to agglomerate, filling the soil pores and enhancing the integrity of the soil, thus improving the soil properties.

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Analysis of the Wangping Brownfield Using a Two-Step Urban Brownfield Redevelopment Model

Liu,

Feng,

et al. 2024

Land

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With societal progress, urban brownfields have become restrictive, and redevelopment studies have become an important part of urban renewal. In this work, we developed a two-step model for urban brownfield redevelopment, while considering the Wangping brownfield as the study area. Site suitability evaluation models for brownfield parks, agricultural picking gardens, and creative industrial centers were developed based on the elevation, slope, and surface runoff, and the evaluation results were categorized into five levels. The redevelopment plan was formulated based on these evaluation results. To study the effect of the plan, a transition matrix of land use was assessed using satellite images and the cellular automata (CA)–Markov model; based on the analysis, we predicted the land use situation of the Wangping brownfield, with respect to natural development, for 2030. A comparison of the redevelopment planning with the forecasted results revealed that the proportions of grassland, construction, and unused land decreased by 25.68, 3.12, and 2.38% and those of plowland and forest land increased by 6.61 and 24.57%. This confirms the advantages of redevelopment planning for restoring plowland and increasing biological carbon sinks. Notably, our two-step urban brownfield redevelopment model can enrich the current research on urban brownfields and guide similar urban renewal projects.

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Characterization and Assessment of Organic Pollution at a Fumaric Acid Chemical Brownfield Site in Northwestern China

Cited by 4 publications

References 41 publications

Identification and Assessment of Groundwater and Soil Contamination from an Informal Landfill Site

Identification and Assessment of Groundwater and Soil Contamination from an Informal Landfill Site

Improved Granite Residual Soils from a Study on Diesel Contamination in East Hunan Province

Analysis of the Wangping Brownfield Using a Two-Step Urban Brownfield Redevelopment Model

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