Effect of heavy metals on growth population of a fecal coliform bacterium Escherichia coli in aquatic environment

1988 ◽  
Vol 38 (3-4) ◽  
pp. 251-254
Author(s):  
Sasadhar Jana ◽  
Dinen N. Bhattacharya
Keyword(s):  
Escherichia Coli ◽  
Heavy Metals ◽  
Aquatic Environment ◽  
Fecal Coliform ◽  
Coliform Bacterium

scholarly journals VERIFIKASI PENENTUAN ANGKA BAKTERI Escherichia coli PADA SAMPEL YANG DI-SPIKE MENGGUNAKAN METODE COLONY FORMING UNIT

2019 ◽  
Vol 6 (1) ◽  
pp. 42-48
Author(s):  
Chairani Arizal ◽  
Aswal Harianto
Keyword(s):  
Escherichia Coli ◽  
Fecal Coliform ◽  
Coliform Bacterium ◽  
High Dilution ◽  
Bacterial Growth Rate ◽  
Accuracy Test ◽  
Escherichia Coli Bacteria ◽  
Limit Sensitivity ◽  
Use Factors

The water that must be drunk is healthy water that meets the requirements of Bacteriology, Chemistry, Radioactivity and Physicality based on Republic of Indonesia Minister of Health Regulation No: 492 / MENKES / PER / IV / 2010 concerning the requirements and supervision of clean water quality which includes physical requirements which are odorless, not colored and tasteless, where for the Coliform value is 0/100 mL. Escherichia coli is a fecal coliform bacterium and an indicator of the quality of drinking water because its presence in water indicates that the water is contaminated by feces. The aim of this study was to determine the value of accuracy, precision, detection limit, sensitivity and specificity of the calculated numbers of Escherichia coli bacteria from spike samples using the CFU method with agar chromocult media. The results of the bacterial results obtained on accuracy parameters were 229.33%, precision ie 26.35%, LOD which was 13.85 CFU / ml, LOQ ie 138.54 CFU / ml, and Specificity of 0%. Based on the results of verification of bacterial numbers obtained from the results of the accuracy test, precision that is not within the range of  general requirements indicates that the method cannot be valid to use factors that affect high dilution, rapid bacterial growth rate, adequate nutrition and observer vision, whereas specificity indicate that chromocult coliform is very specific to Escherichia coli.

COPPER AND ZINC INDUCED CHANGES IN SOYBEAN (Glycine max (L.) Merr.)

1970 ◽  
pp. 09
Author(s):  
K. SANKAR GANESH ◽  
P. SUNDARAMOORTHY
Keyword(s):  
Heavy Metals ◽  
Glycine Max ◽  
Aquatic Environment ◽  
Morphological Traits ◽  
Industrial Activities ◽  
Copper And Zinc ◽  
Glycine Max L ◽  
Zinc Concentrations ◽  
Induced Changes

Heavy metals are one of the most important pollutants released to the aquatic environment by the various industrial activities. The use of these wastewater for irrigation results accumulation of heavy metals in soil and plants. So, the present investigation deals with the various concentrations (0, 5, 10, 25, 50, 100, 200 and 300 mg/l) of copper and zinc on germination studies of soybean. The different concentrations of copper and zinc were used for germination studies. The seedlings were allowed to grow upto seven days. The studied morphological traits increased at 5 mg/l concentration and these parameters are gradually decreased with the increase of copper and zinc concentrations.

scholarly journals Effects of Wastewater Sludge Topdressing on Color, Quality, and Clipping Yield of a Turfgrass Mixture

HortScience ◽  
2011 ◽  
Vol 46 (9) ◽  
pp. 1308-1313 ◽  
Author(s):  
Ugur Bilgili ◽  
F. Olcay Topac-Sagban ◽  
Irfan Surer ◽  
Nejla Caliskan ◽  
Pervin Uzun ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Ammonium Nitrate ◽  
Food Processing ◽  
Fecal Coliform ◽  
Soil Samples ◽  
Wastewater Sludge ◽  
Turf Quality ◽  
Color Quality ◽  
Turf Soils ◽  
Sludge Application

The objectives of the present study were to determine the effects of the rate and timing of the application of sun-dried wastewater sludge from a food processing company's wastewater system on turfgrass growth and quality. The results were compared with those obtained with ammonium nitrate, and changes in the concentration of heavy metals and the presence of fecal coliform in turf soils after sun-dried wastewater sludge application were determined. The rate and the timing of sun-dried wastewater sludge and ammonium nitrate applications affected the turf color, quality, and clipping yield. Monthly fertilization resulted in a more uniform color and turf quality than infrequent spring and fall fertilization. Compared with the background values of base soils, heavy metals did not accumulate in sun-dried wastewater sludge-amended soils over the test period. Fecal coliform was not detected in sludge-amended soil samples, indicating that bacteria regrowth did not occur during the study period.

scholarly journals Comparison of Fecal Coliform Agar and Violet Red Bile Lactose Agar for Fecal Coliform Enumeration in Foods

2002 ◽  
Vol 68 (4) ◽  
pp. 1631-1638 ◽  
Author(s):  
A. Leclercq ◽  
C. Wanegue ◽  
P. Baylac
Keyword(s):  
Escherichia Coli ◽  
Fecal Coliform ◽  
Food Samples ◽  
Fecal Coliforms ◽  
Predictive Values ◽  
Direct Plating ◽  
Hafnia Alvei ◽  
E Coli ◽  
Plating Method ◽  
Mashed Potatoes

ABSTRACT A 24-h direct plating method for fecal coliform enumeration with a resuscitation step (preincubation for 2 h at 37 ± 1°C and transfer to 44 ± 1°C for 22 h) using fecal coliform agar (FCA) was compared with the 24-h standardized violet red bile lactose agar (VRBL) method. FCA and VRBL have equivalent specificities and sensitivities, except for lactose-positive non-fecal coliforms such as Hafnia alvei, which could form typical colonies on FCA and VRBL. Recovery of cold-stressed Escherichia coli in mashed potatoes on FCA was about 1 log unit lower than that with VRBL. When the FCA method was compared with standard VRBL for enumeration of fecal coliforms, based on counting carried out on 170 different food samples, results were not significantly different (P > 0.05). Based on 203 typical identified colonies selected as found on VRBL and FCA, the latter medium appears to allow the enumeration of more true fecal coliforms and has higher performance in certain ways (specificity, sensitivity, and negative and positive predictive values) than VRBL. Most colonies clearly identified on both media were E. coli and H. alvei, a non-fecal coliform. Therefore, the replacement of fecal coliform enumeration by E. coli enumeration to estimate food sanitary quality should be recommended.

ZIRCONIUM LOADED BANANA STEM FIBERS AS ADSORBENT FOR RECOVERY OF HG(II)

2016 ◽  
Vol 78 (8-3) ◽  
Author(s):  
Nurrulhidayah Salamun ◽  
Sugeng Triwahyono ◽  
Aishah Abdul Jalil
Keyword(s):  
Heavy Metals ◽  
Aquatic Environment ◽  
Active Sites ◽  
Low Cost ◽  
Mercury Removal ◽  
Cellulose I ◽  
Xrd Pattern ◽  
Crystal Phases ◽  
Good Possibility ◽  
Banana Stem

Mercury is one of the most toxic pollutants which pose a great threat to both human health and organism security. A great deal of research over recent decades has been motivated by the requirement to lower the concentration of these heavy metals in water and the need to develop low cost techniques which can be widely applied for heavy metals remediation. Adsorption is by far the most reliable technologies for removing mercury from water. In this study, banana stem fibers, a natural biomass was loaded with zirconium (IV) to investigate its feasibility for mercury removal from an aquatic environment. The XRD pattern for both BSF-HCl and Zr/BSF-HCl exhibited mainly the cellulose I structure which consists of two distinct crystal phases. The FESEM images illustrated the presence of relatively well organized, pronounced and uniform cavities distributed around the surface, indicated a good possibility for the metal ions to be adsorbed. The result shows that Hg (II) adsorption capacity increased from 45 to 72 mg/g after the immobilization of Zr due to increase in the active sites on the adsorbent. 

Reducing Potential Leaching of Phosphorus, Heavy Metals, and Fecal Coliform From Animal Wastes Using Bauxite Residues

2010 ◽  
Vol 214 (1-4) ◽  
pp. 241-252 ◽  
Author(s):  
Jim J. Wang ◽  
Hailin Zhang ◽  
Jackie L. Schroder ◽  
Theophilus K. Udeigwe ◽  
Zengqiang Zhang ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Fecal Coliform ◽  
Animal Wastes ◽  
Reducing Potential ◽  
Bauxite Residues
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