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Articles by M.T. Jafarzadeh
Total Records ( 2 ) for M.T. Jafarzadeh
  A. Rezaee , J. Derayat , S.B. Mortazavi , Y. Yamini and M.T. Jafarzadeh
  In this study, the removal of mercury ions by cellulose of Acetobacter xylinum was investigated in the synthetic and chlor-alkali wastewater. Biofilms of Acetobacter xylinum were grown in laboratory column bioreactors. The biofilms were continuously treated with sterile synthetic model wastewater or nonsterile, neutralized chloralkali wastewater.The extent of adsorption was studied as function of pH, adsorbent dose and contact time. Efficiency of mercury ion removal from chlor-alkali industry wastewater by aluminum sulfate and ferric chloride was also determined. Under acidic condition the adsorption of mercury by cellulose was quite low and increasing processing time more than10min has no remarkably effect on the adsorption rate. Adsorption capacity of cellulose under dynamic condition for chlor-alkali wastewater was 65μg/g which was less than the value (80μg/g) that obtained from batch adsorption experiments for synthetic wastewater.
  M.T. Jafarzadeh , N. Mehrdadi , A.A. Azimi and S.J. Hashemian
  Performance of an anaerobic hybrid reactor (UASB/Filter) treating petrochemical wastewater at mesophilic condition was investigated. The reactor was seeded with flocculent sludge from a UASB plant treating dairy wastewater. The sludge was acclimatized to petrochemical wastewater in two-stage operation. After 39 weeks, a COD reduction of 70.3% was obtained at OLR = 2.0 kg and HRT = 18 h. During the reactor operation, the influent COD concentration was kept between 1000-4000 mg L-1 range and the organic loading rates and hydraulic retention times ranging between 0.5-24.0 kg COD m-3 day, respectively. The performance of the different sections of the reactor (sludge bed and fixed bed) was evaluated and is presented separately. The minimum and maximum COD reduction of the overall reactor were 42.1 and 85.9% at influent COD concentration of 3000 mg L-1 and 4000 mg L-1, HRT = 24 h and 4h, and OLR = 3.0 kg m-3 day and OLR = 24.0 kg m-3 day, respectively.
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