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The ability of different local isolates in addition to some isolates from Germany to degrade kerosene in liquid medium was studied. The results showed that the percent of kerosene degradation varied among the different organisms and that 59–94% of kerosene was degraded after 21 d. Two local isolates (Pseudomonas sp. AP and Pseudomonas sp. CK) and one German isolate (Gordonia sp. DM) were selected for this study. The addition of wheat bran, as co-substrate, stimulated the kerosene degradation by the two local strains, while glucose inhibited the degradation rate using the three organisms with different rates. Ammonium nitrate and urea was the best nitrogen sources. The use of superphosphate (as phosphorus source) in the presence of urea stimulates the degradation rate. It was also observed that the addition of 1% surfactants, like Triton X-100, Igepal, Tergitol, or Tween 20 and 80 enhanced the kerosene degradation. The degradation percent lied between 94% and 98%. The ability of the tested organisms to degrade kerosene concentration from 2% to 8% was evaluated. It was found that the three organisms degraded about 65–85% from 8% kerosene after 21 d. The use of rice straw-immobilized cells reduced the time of degradation and enhanced the degradation ability of the organisms. The sodium dodecyl sulphate-polyacrylamide gel electrophoresis revealed the presence of a common protein band when the tested organisms were grown on kerosene. 相似文献
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Saqer AS Seham H Ragaa G Yehia Ael W Wafaa S 《Environmental monitoring and assessment》2007,130(1-3):341-346
Strongyloidiasis presents a major health hazard when reusing wastewater. Albendazol with a concentration of 4 mg/l, a contact time of 45 min,
pH 1.2 and pH 10.2, killed the larva. The larva was also killed with a 0.03% concentration of iodine and a detention time
of 30 min or a 0.04% concentration of iodine and a contact time of 10 min. The required detention time to inactivate larva
in water was found to be 17 days. The minimum revealed residual chlorine to kill the larvae was 4 mg/l with 120 min of detention
time, and a minimum contact time was found to be 80 min with a residual of 23 mg/l. Many methods are available to inactivate
the Strongyloides stercoralis, which could be acids, alkaline chemicals, larvicidal chemicals, super chlorination, or just detention time. The best method
must be determined according to the prevailing specific environmental site and the feasibility of the selected method(s). 相似文献
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Morsy Tarek A. Gouda Gouda A. Kholif Ahmed E. 《Environmental science and pollution research international》2022,29(46):69743-69752
Environmental Science and Pollution Research - Plant leaf meal of some forage trees such as Moringa oleifera has attracted an increasing interest as a good and cheap source of protein. The present... 相似文献
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Vavilala Hariprasad Yaladanda Nikhila Krishna Kondeti Phani Rafiq Unissa Mopuri Rajasekhar Gouda Krushna Chandra Rao Bhimala Kantha Rao Kadiri Madhusudhan Upadhyayula Suryanaryana Murty Rao Mutheneni Srinivasa 《Environmental science and pollution research international》2022,29(45):68232-68246
Environmental Science and Pollution Research - Malaria is an endemic disease in India and targeted to eliminate by the year 2030. The present study is aimed at understanding the epidemiological... 相似文献
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