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The natural paly gorskite modified was as reactive media of PRB. Based on the investigation of effect of specific hydro chemical factors, such as Fe2+, Fe3+, Mn2+, NO3-, SO42- etc.,on remediation efficiency of petroleum contaminated groundwater, the dynamics, isothermal adsorption model and characterization of reactive media were studied. The results showed that the effect of purifying TPH with the...
In view of the problem that the high concentration of nitrogen and phosphate remained in secondary effluent, adsorption processes were attempted to remove nitrogen and phosphate. In this paper, nature zeolite was modified and compounded as a matrix material. After treating in these methods, the properties of zeolite had been greatly improved and the goal of nitrogen and phosphate synchronous removal...
By the soil column experiments, the concentration of the pesticide's solute in the outlet flowing were derived. The model parameters are determined using Kinetic model of two-site absorption-desorption model through experimental results and the MATLAB program developed by the authors. Based on these, the trends of pesticide's solute transport at different time and depth in the soil column was estimated...
Adsorption of Heavy metals from aqueous solutions by industrial waste sludge was investigated. The effect of time and initial concentration solution pH, were studied in batch kinetic experiments. The initial uptake was rapid and equilibrium was achieved within 180 minutes. The data relating to percentage of adsorption at different pH values were fitted into the surface complex model and the overall...
An extracellular biopolymer (PS-2) produced by Pseudomonas fluorescence C-2 was used as an alternative biosorbent to remove toxic Pb(II) metallic ions from aqueous solutions. The prepared biosorbent PS-2 were characterized by FTIR and SEM. The effect of experimental parameters such as pH, dosage of biosorbent , Pb(II) initial concentration and contact time on the adsorption was studied. It was found...
The extensive clayization of Dexing copper mine is responsible for water and soil pollutions because of the oxidation of sulfide minerals. During the clayization, harmful elements such as As, S, Sb and Pb could be effectively released into the clay and water. Using the abundant spectral information of short wave infrared (SWIR), combining with the spectral absorbed index, SAM (Spectrum Angle Mapper)...
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