Effect of high-voltage spark discharges on reduction of the concentration of total bacterial count in wastewater

2022 ◽  
Vol 45 ◽  
pp. 102465
Author(s):  
Alexander Belov ◽  
Alexey Vasilyev ◽  
Alexey Dorokhov ◽  
Andrey Izmailov ◽  
Vladimir Storchevoy
Author(s):  
Hashmath Inayath Hussain ◽  
Naga Kasinadhuni ◽  
Tony Arioli

AbstractThis study investigated the effects of seaweed extract (SWE) made from the brown algae Durvillaea potatorum and Ascophyllum nodosum on plants and soil. The application of SWE to soil growing tomato plants showed dual effects. SWE comprehensively improved tomato plant growth (flower clusters, flower number, fruit number, root length, root and shoot dry weight, SPAD) and increased plant productivity (yield and quality). Similarly, SWE application effected soil biology at the soil root zone by increasing total bacterial count and available soil nitrogen and impacting bacterial community diversity with an increase in certain bacterial families linked to soil health. A broader understanding of the effects of SWE on the plant-soil ecosystem may offer breakthrough approaches for sustainable food production.


2012 ◽  
Vol 47 (1) ◽  
pp. 93-98 ◽  
Author(s):  
M Begum ◽  
MA Khaleque ◽  
MA Wahed ◽  
F Hafiz

With a view to get a pen picture about the trend and extent of quality changes and as well as shelf life of the head off and head on shrimp (Macrobrachium rosenbergii, De Man, 1879), the present study have been carried out . Quality changes have been measured by application of sensory score evaluation and changes in chemical indices such as Total Volatile Nitrogen (TVN) value, pH and level of moisture at different time interval and Total Bacterial Count (TBC) at 15°C during the study period. The results of the sensory score evaluation indicates that the shrimp quality decreased to the limits of acceptability at 12th days of ice storage. The head off shrimp kept slight better than corresponding head on shrimps. The bacterial counts determined at 15°C have been found to increase from 103 - 107 and 104 -108 cfu/gm for head off and head on shrimp respectively at the limit of acceptability. The moisture level increased from initial 78.85gm% to final 83.80gm% (head off) & 79.0gm% to 84.0gm% (head on) and pH value increases from 7.1 to 8.1 during the whole period of iced preservation . Both head off and head on shrimp remained in acceptable condition for up to 12 and 14 days of storage respectively while the quality of fish deteriorates and become unacceptable. The bacterial count corresponding to unacceptable condition ranges from 108-109 cfu/gm fish sample. The TVN value corresponding to rejection condition were 45-50mg N/100gm fish sample. DOI: http://dx.doi.org/10.3329/bjsir.v47i1.10731 Bangladesh J. Sci. Ind. Res. 47(1), 93-98, 2012


2009 ◽  
Vol 9 (10) ◽  
pp. 1270-1276 ◽  
Author(s):  
Marco Grossi ◽  
Anna Pompei ◽  
Massimo Lanzoni ◽  
Roberto Lazzarini ◽  
Diego Matteuzzi ◽  
...  

2009 ◽  
Vol 76 (2) ◽  
pp. 234-240 ◽  
Author(s):  
Bart Van der Straeten ◽  
Jeroen Buysse ◽  
Guido Van Huylenbroeck ◽  
Ludwig Lauwers

This paper uses a Markov chain model to analyse the dynamics in farm-size distribution among the Flemish dairy sector and the impact of quota policy regulation on such changes. The model predicts a decline of 24% in number of farms in 2014 compared with the current situation with a more liberal exchange policy and a decline of 18% with a restricted quota exchange policy. From these Markov chain model results, we analysed the impact of farm-size distribution on eight different milk quality parameters (total bacterial count, somatic cell count, coliform count, freezing point, urea-N, fat content and protein content and penalty-points). In general, larger farms produce higher quality milk than smaller farms, especially with respect to the microbiological parameters (total bacterial count, somatic cell count and coliform count). The change in farm-size distribution from a liberal quota exchange policy would decrease the average total bacterial count by 18·0%, the somatic cell count by 2·1% and the coliform count by 11·0%. The aggregate performance of the other parameters are smaller with improvements in all cases of <1%.


2016 ◽  
Vol 4 (3) ◽  
pp. 411 ◽  
Author(s):  
Halima Sarder ◽  
Tahsin Khan ◽  
Mihir Lal Saha ◽  
Nusrat Jahan Punom ◽  
Shankar Chandra Mandal ◽  
...  

Aeromonas hydrophila is an opportunistic microorganism. It is a secondary biological agent that contributes to the occurrence of fish diseases and its deterioration. This research was undertaken to determine the prevalence of A. hydrophila in some freshwater fishes collected from three different fish markets of Dhaka City and to test their antibiotic susceptibility. Total bacterial count and total aeromonas on different aeromonas selective media were enumerated using serial dilution technique. Bacterial isolates were characterized to identify A. hydrophila using biochemical tests and with comparison to reference strain (ATCC 7966). The lowest Aeromonas count was detected to be 2.83±0.40×102 cfu/g in Anabas testudineus and the highest was 1.03±0.153×103 cfu/g in Oreochromis mossambicus. On market basis highest aeromonas count was found in Anando Bazar (8.10±1.09×102 cfu/g) and lowest in Hatirpool Bazar (5.63±0.90×102 cfu/g) with no significant difference. Maximum susceptibility to amikacin and gentamicin was observed whereas all of the isolates were found resistant to a commonly used antibiotic amoxycillin. The obtained results point that antimicrobial susceptibility was more or less similar regardless of the origin of the samples collected. All the fishes investigated in this study contained A. hydrophila in their different organs.


Author(s):  
Ahmed G. Hegazi ◽  
Faiz M. Al Guthami ◽  
Mohamed H. Basiouny ◽  
Ahmed F.M. Al Gethami

Honey has been documented as the oldest traditional medicine. It has been effective in suppressing inflammation, wound repair enhancer, and rapid autolytic debridement. The aim of this investigation was to evaluate the role of Saudi Arabia Talh honey (Acacia nilotica) dressing as a good alternative in care of diabetic foot (DFU) healing activity for twenty patients, wound total bacterial count, and serum cytokines levels (IFN-γ, IL-1, and IL-6). The results showed that Talh honey stimulates the wound healing process, broad-spectrum antibacterial activity, and reduction in the proinflammatory cytokines IFN-γ, IL-1, and IL-6 levels. It could be concluded that Talh honey bioactivities enhance wound healing by promoting tissue growth leading to wound repair, antibacterial, and reduction of inflammation.


2005 ◽  
Vol 21 (1-2) ◽  
pp. 99-108 ◽  
Author(s):  
M.A. Kenawi

The effect of microwave heating as a thawing method on physical, chemical sensory, and microbiological properties of frozen chicken was investigated in comparison with other thawing methods (at ambient temperature, in refrigerator, and in running tap water). Microwave thawed chicken had the highest taste panel scores and the lowest drip percentage loss compared with the other thawing methods. Thiobarbituric acid value (TBA) remarkably increased the samples thawed at ambient temperature or under running water. The data revealed that the retention of thiamin was the highest in the microwave thawed samples (97.33%), and the lowest in running water thawed samples (66.66%). The total bacterial count in frozen chicken remarkably decreased as a result of microwave thawing treatment while increased in the other treatments.


2012 ◽  
Vol 36 (0A) ◽  
pp. 151-156
Author(s):  
Dahfier Abid Ali Al-Obaidi

This study was carried out at the College of VeterinaryMedicine, University of Baghdad,for two months, to study the beef luncheon meat in Baghdad city by evalutuation somePhysicochemical and bacteriological features the obtained data revealed the following results:Physicochemical indicated that myoglobin concentration, was low for all sample of meat withno significant differences in marks which were 163.3 – 178.7 mg/100g meat. Total volatilenitrogen (TVN) values were more the allowance limits especially in food and mark whichwere 20.4mgN/100g meat with no significant differences in marks. Thiobarbituric acid (TBA)values and Free Fatty acid (FFA) percentages were withen the allowance limits in all marks.Bacteriological results indicated that total Bacterial count (TPC) were low of meat samplewhich were140 - 220 cfu /g, with significant differences (P<0.05) in Marks. The total coliformcount were less than allowance limits, were the same with Anaerobic total Bacterial count(A.T.P.C.) which Were 3 - 41cfu/g and30 – 260 cfu/g with significant differences (P<0.05) inmarks. The results indicated that beef luncheon was low in some Physicochemicalespecially in food land mark. Therefore it is necessary to make Evaluation cautiously of theimported meats and meat processing to safe public health.


2018 ◽  
Vol 33 (1-2) ◽  
pp. 1-4
Author(s):  
Md Kamruzzaman Pramanik ◽  
Abdul Bathen Miah ◽  
Md Khorshed Alam

The aim of the study was to preserve paper-based archived material for a long period of time using ionizing radiation/nuclear technique. To conduct this research, old note-pad samples were selected as tentative archived material. Samples were prepared and irradiated at a series of radiation doses e.g. 0, 2.0, 4.0, 6.0, 8.0, 10.0 and 14.0 kGy at a dose rate of 12.8 kGy/h from panaromic Batch type 80 kCi 60Co source. After irradiation, different quality parameters such as microbiological (Total Viable Bacterial Count, Total Fungal Count), mechanical (Tensile Strength, Percent of Elongation at Break and Elastic Modulus) and color properties (L-value, a-value and b-value) of the samples were assessed to observe the immediate effect of ionizing radiation on these properties. Results showed that the total bacterial count of unirradiated (control) paper were 4.0X102 cfu/g and radiation dose of 2.0 kGy was enough to eliminate the microbial load completely. Among mechanical properties, tensile strength (TS) of unirradiated sample was 16.23 MPa and it was gradually increased as the dose increased and finally reached upto 18.99 MPa at a dose of 14 kGy causing the TS-change above significant level (p < 0.05). Though changes of percent of elongation at break (EB) due to irradiation was insignificant, elastic module (EM) increased as the radiation dose increased gradually. EM of non irradiated sample was 381.85N/m2 and it started changing significantly from 6.0 kGy and finally reaches upto 477.03 N/m2 at 14.0 kGy. Results showed that L-value of colour parameter changed very slightly though a and b-value changed significantly from 6.0 kGy. From these findings it can be inferred that a radiation dose of 4.0 kGy might be used to conserve the cultural heritage including valuable paper-based archived materials. Bangladesh J Microbiol, Volume 33, Number 1-2, June-Dec 2016, pp 1-4


2021 ◽  
Vol 12 (5) ◽  
pp. 6336-6360

This paper analyses the latest techniques for treating wastewater to make it suitable for agricultural applications in regions where irrigation water is scarce. Micro-filtration (MF) techniques yield a significant reduction in Chemical Oxygen Demand (COD), Biological Oxygen Demand (BOD), Total Suspended Solids (TSS), and Total Bacterial Count (TBC) of wastewater, which makes it suitable to be used for irrigational purposes. Microbial Fuel Cell (MFC) technology is a viable solution for treating wastewater discharged from many industrial sectors, such as the food processing industry, for reclaiming water for agro-applications. Such industrial water may seal soil pores if directed untreated to agricultural fields. Concerning the treatment of microbial contamination of wastewater, the removal rate of pressurized membrane bio-booster (MBR) is significantly large for coliform and metals such as lead, copper, chromium, and arsenic. Both electrocoagulation and chemical coagulation are applied in the removal of oxidable chemicals from wastewater. However, the electrocoagulation process shows a higher efficiency in terms of removing COD. Contamination of agricultural fields with heavy metals is considered an adverse impact on the human and animal safety of discharging wastewater into agro-fields. Thus, removing such contaminants should be given the utmost priority in wastewater treatment, especially from industrial discharge, before they are directed to agricultural usage. Factors that govern the sustainability of a given method in a water-scarce region are also discussed.


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