J Hazard Mater
Department of Environmental Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 143-701, South Korea. Electronic address:
Published: April 2015
The removal of heavy metals (Zn and Pb) and heavy petroleum oils (HPOs) from a soil with complex contamination was examined by soil flushing. Desorption and transport behaviors of the complex contaminants were assessed by batch and continuous flow reactor experiments and through modeling simulations. Flushing a one-dimensional flow column packed with complex contaminated soil sequentially with citric acid then a surfactant resulted in the removal of 85.6% of Zn, 62% of Pb, and 31.6% of HPO. The desorption distribution coefficients, KUbatch and KLbatch, converged to constant values as Ce increased. An equilibrium model (ADR) and nonequilibrium models (TSNE and TRNE) were used to predict the desorption and transport of complex contaminants. The nonequilibrium models demonstrated better fits with the experimental values obtained from the column test than the equilibrium model. The ranges of KUbatch and KLbatch were very close to those of KUfit and KLfit determined from model simulations. The parameters (R, β, ω, α, and f) determined from model simulations were useful for characterizing the transport of contaminants within the soil matrix. The results of this study provide useful information for the operational parameters of the flushing process for soils with complex contamination.
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http://dx.doi.org/10.1016/j.jhazmat.2015.01.062 | DOI Listing |
J Environ Manage
January 2025
Department of Agricultural and Biological Engineering, Mississippi State University, Mississippi State, MS, 39762, United States. Electronic address:
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Basin Research Center for Water Pollution Control, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
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BRGM (French Geological Survey), Orléans 45060, France.
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Department of Floriculture and Landscape Architecture, College of Horticulture, Dr. Yashwant Singh Parmar University of Horticulture and Forestry, Nauni, Solan, Himachal Pradesh, 173 230, India.
A sustainable approach of farming involves using desi-cow waste products helps to improve soil biology. Jeevamrit, a traditional biofertilizer, enhances soil health and organic carbon and also reduces the need for farmyard manure, hence minimizing carbon footprint and supports eco-friendly agriculture. The present study investigated the effectiveness of Jeevamrit compared to chemical fertilizers and growth regulators for maintaining a healthy mother block of marigold.
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Co-Innovation Center for the Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing 210037, China.
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