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Removal of Cu2+, Cd2+, Pb2+ and Zn2+ in wastewater was investigated using steel slag as a treatment material, and then mechanism of removal was discussed according to main crystalline phases in steel slag and Zeta potential of steel slag. The results showed the steel slag was a very suitable multi-functional material for the treatment of wastewater containing Zn2+, Cu2+, Cd2+ and Pb2+. Under treatment...
The process and action mechanism of the copper wastewater adsorption accomplished by ferric salt and cerous salt modified water granulated slag were studied in this paper. Results showed that under the conditions of room temperature of 20°C, dosage of 6g/L, pH 7, reaction time of 60min to treat 100 mL 20mg/L copper wastewater, the removal rate reached 93.64%.The adsorption of modified water granulated...
The adsorption of Cu2+ from pharmaceutical wastewater by zeolite was studied in a batch adsorption system. Factors influencing copper adsorption such as pH (1-5), adsorbent dosage (5-50 g/L) and contact time (20-600 min) were investigated. The equilibrium of adsorption process was established in about 480 min, while pH was 5 and adsorbent dosage was 30 g/L. After the adsorption equilibrium was achieved,...
The paper investigated the treatment effect of modified rice husk as an adsorbent on wastewater containing Zn(II). Langmuir and Freundlich equations quantified the Zn(II) removal effect of modified rice husk. We analyzed characteristics of adsorption kinetics, the initial pH value, temperature effect on adsorption process, and compared with the regeneration efficiency of adsorbent. The results showed...
Put dead immobilized saccharomyces cerevisiae biomass into column of continuous upflowing reactor. Study the influence of temperature, quantity of saccharomyces cerevisiae in column and initial Cu2+ concentration on Cu2+ adsorption. Determine optimal operating parameters of initial pH values, flow rates and quantities of saccharomyces cerevisiae in column through orthogonal experiment. Analyse adsorption...
The preparation of magnetic chitoson bead by chemical conversion method has been investigated, and the IR has been used for ensuring the structure of the magnetic chitosan bead. The effects of various factors on the adsorption of Cu(II) are discussed including pH, adsorption time and adsorption temperature. The best adsorption conditions are pH 5.5, adsorption time 60 min, adsorption temperature 30degC...
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