scholarly journals Detection of fecal coliforms and SARS-CoV-2 RNA in sewage and recreational waters in the Ecuadorian Coast: a call for improving water quality regulation

2022 ◽  
Author(s):  
Maritza Cardenas ◽  
Leandro Patinoa ◽  
Beatriz Pernia ◽  
Roberto Erazo ◽  
Carlos Munoz ◽  
...  
Keyword(s):  
Organic Pollution ◽  
Fecal Coliforms ◽  
Public Health Importance ◽  
Recreational Waters ◽  
Reverse Transcription Pcr ◽  
Quality Regulation ◽  
Physico Chemical ◽  
Quality Markers ◽  
Microbiological Parameters ◽  
Salinity Levels

Wastewater surveillance represents an alternative approach for the diagnosis and early detection of infectious agents of public health importance. This study aimed to evaluate SARS-CoV-2 and other quality markers in oxidation lagoons, estuarine areas and seawater at Guayas and Santa Elena in Ecuador. Sample collections were conducted twice at 42 coastal sites and 2 oxidation lagoons during dry and rainy seasons (2020-2021). Physico-chemical and microbiological parameters were evaluated to determine organic pollution. Quantitative reverse transcription PCR was conducted to detect SARS-CoV-2. Results showed high levels of Escherichia coli and low dissolved oxygen concentrations. SARS-CoV-2 was detected in sea-waters and estuaries with salinity levels between 34.2-36.4 PSU and 28.8 degrees celsius -31.3 degrees celsius. High amounts of fecal coliforms were detected and correlated with the SARS-CoV-2 shedding. We recommend to decentralized autonomous governments in developing countries such as Ecuador to implement corrective actions and establish medium-term mechanisms to minimize a potential contamination route.

scholarly journals STUDY OF PHYSICOCHEMICAL AND MICROBIOLOGICAL QUALITY OF THE SPRING WATERS OF THE REGION OF OUM TEBOUL WILAYA OF EL TARF- ALGERIA

2020 ◽  
Vol 26 (3) ◽  
pp. 52-57
Author(s):  
SABRINA BOUCHELAGHEM ◽  
SAMIA MOUISSI ◽  
CHAIMA BENZERAA ◽  
ROUMAISSA KHALFOUN
Keyword(s):  
Drinking Water ◽  
Microbiological Quality ◽  
Point Of View ◽  
Fecal Coliforms ◽  
Total Coliforms ◽  
Drinking Water Standards ◽  
Physico Chemical ◽  
Microbiological Parameters

The present work aims to assess the physico-chemical and microbiological parameters of the waters of the three sources (Ain Bergougaya, Ain Sigleb and Siporex) in the region of Oum el Teboul wilaya of El Tarf. Parameters such as temperature, pH, conductivity and salinity were measured in situ with a field multimeter. Hardness (62 mg/L to 266 mg/L), salinity (0.01 to 1 mg/L). From a microbiological point of view, there has been no evidence of the complete absence of germs of contamination such as total coliforms and fecal coliforms. This study compared to the drinking water standards shows that the waters in the area studied are of good quality.

Case study on evaluation of the performance of waste stabilization pond system of Jodhpur, Rajasthan, India

2013 ◽  
Vol 8 (1) ◽  
pp. 95-104 ◽  
Author(s):  
Bhawana Goyal ◽  
Devendra Mohan
Keyword(s):  
Sewage Treatment ◽  
Treatment Plant ◽  
Permissible Limit ◽  
Fecal Coliforms ◽  
E Coli ◽  
Stabilization Pond ◽  
Waste Stabilization Pond ◽  
Waste Stabilization ◽  
Physico Chemical ◽  
Microbiological Parameters

The objective of this study is to find out physico-chemical and microbiological characteristics of influent and effluent generated by the sewage treatment plant of Jodhpur city. The treatment plant was constructed in the year 2003–2004 and based on waste stabilization pond (WSP) system. The treatment capacity of the plant is 45 ML/d. Relationship between different physico-chemical and microbiological parameters were studied. After the treatment of wastewater in WSP, average removal of BOD, COD, TSS and TKN were 84.1, 53.4, 79.7 and 61.7% respectively. Average removal of Total Coliforms (TC), Fecal Coliforms (FC), E. coli and Fecal Streptococci (FS) were 2.79 logs, 2.47 logs, 1.65 logs and 1.58 logs respectively. Maximum efficiency of fecal bacteria removal was found during the summers (2.7 to 4.0 log units) and minimum in winters (1 to 1.8 log unit). Further correlation of temperature, pH and biological oxygen demand with TC, FC, E. coli and FS were studied. Among all these parameters temperature shows highest correlation with microbiological parameters as follows: TC (−0.85), FC (−0.62), E. coli (−0.65) and FS (−0.75). High ambient temperature, long photoperiod and high intensity of light can be considered as the major factor for the removal of fecal indicators during the sewage treatment. After treatment pH, BOD, COD, TSS and TKN were found within the permissible limit of Central Pollution Control Board, India. The observed values of fecal indicator organisms are higher than the permissible limit of World Health Organization (WHO). There are no maturation ponds in the treatment plant; construction of maturation ponds will provide better removal of fecal coliforms.

scholarly journals Munzur Çayı (Tunceli-Türkiye)’nın Algal Florasının ve Su Kalitesi Değişimi

2018 ◽  
Vol 6 (8) ◽  
pp. 985
Author(s):  
Banu Kutlu ◽  
Burcu Demir
Keyword(s):  
Water Quality ◽  
Organic Pollution ◽  
Chemical Parameters ◽  
Domestic Waste ◽  
Nitzschia Palea ◽  
Phytoplankton Distribution ◽  
Quality Regulation ◽  
Quality Of Water ◽  
Physico Chemical

Phytoplankton distribution and physico-chemical parameters in two stations in Munzur River were determined in the study carried out monthly between February 2015 and January 2016. According to water quality regulation of the supreme, while quality of water is first class property for temperature, pH, oxygen, ammonium nitrate. It is class feature. Also II. The station is in danger of organic pollution due to domestic waste. When the phytoplankton distribution in the region is examined; 84 taxa belonging phytoplankton Chlorophyta (6), Bacillariophyta (54), Cyanobacteria (15), Rhodophyta (1), Ochrophyta (1), Euglenophyta (2), Charophyta (3), Miozoa (2) were detected. In terms of organisms in the phytoplankton Bacillariophyta division was dominant and Cyanobacteria division was subdominant in the two stations. In the phytoplankton, Ulnaria ulna from Bacillariophyta, Nitzschia palea, Bacillaria paradoxa ,Encyonema sp., Navicula sp. and Nitzschia acicularis were mostly found. Lyngbya sp., Spirulina labyrinthiformis, Oscillatoria labyrinthiformis and Oscillatoria mougeotii species beloning to cyanobacteria match to second place in the terms of importance. Chlorophyta, Charophyta and Euglenophyta have not reached important numbers.

scholarly journals Physico-Chemical and Bacteriological Investigation on the River Cauvery of Kollegal Stretch in Karnataka

1970 ◽  
Vol 6 (1) ◽  
pp. 50-59 ◽  
Author(s):  
K Venkatesharaju ◽  
P Ravikumar ◽  
RK Somashekar ◽  
KL Prakash
Keyword(s):  
Water Quality ◽  
River Water ◽  
Anthropogenic Activities ◽  
River System ◽  
Organic Pollution ◽  
Fecal Coliforms ◽  
Cauvery River ◽  
Quality Of Water ◽  
Physico Chemical ◽  
Bacteriological Investigation

Cauvery River is the major river system of south India was studied for 19 prime physicochemicaland 2 bacteriological parameters at six locations of the Kollegal stretch, for a periodof Two years (2006–2008) at monthly intervals. Over the years of time, river has beensubjected to human interference regularly and water quality was to be getting deterioratedprofoundly. Major anthropogenic activities practiced in and around the stretch: agriculture,abstraction of water for irrigation and drinking, washing cloths and utensils, discharging ofsewage waste, sand dredging, boating, fishing, open defecation and religious ritual activitiesalong the stretch were generating serious threat to the biota of the river by altering thephysicochemical and biological concentration of the river system. The seasonal and yearlytrends were discussed to comprehend anthropogenic interferences on the river stretch.Correlation analysis was also been tried in between physico-chemical parameters. The pH,Conductance, Alkalinity and Hardness levels indicate the moderate quality of water. Thevalues of DO, BOD and COD levels indicate the absence of major organic pollution sources.Seasonal and yearly averages of plant nutrients like phosphate, nitrates, potassium and alsosulphates at drain out falls and mixing zones, were not showing any significant variation intheir concentration indicate no sign of problems like eutrophication, which is generally raisedue to agricultural and sewage wastes. The other possibility is that since there are no majorindustries in the project area, the major source of organic pollutants is only the domesticsource. Population density spread over sparsely located villages like Dasanapura and Harlecertainly contributes towards total and fecal coliforms as excreta of the villagers due to lackof toilets in their houses. Thus present study concludes that river water was not polluted; allresults are within permissible limit when compared with Bureau of Indian Standards (BIS)and National River water quality standards.DOI: 10.3126/kuset.v6i1.3310Kathmandu University Journal of Science, Engineering and Technology Vol.6(1) 2010, pp50-59

Occurrence and Removal of Cryptosporidium spp. Oocysts and Giardia spp. Cysts in Kenyan Waste Stabilisation Ponds

1993 ◽  
Vol 27 (3-4) ◽  
pp. 97-104 ◽  
Author(s):  
A. M. Grimason ◽  
H. V. Smith ◽  
W. N. Thitai ◽  
P. G. Smith ◽  
M. H. Jackson ◽  
...  
Keyword(s):  
Waste Water ◽  
Water Samples ◽  
Laboratory Experiments ◽  
Municipal Waste ◽  
Retention Period ◽  
Waste Stabilisation Ponds ◽  
Cryptosporidium Spp ◽  
Physico Chemical ◽  
Microbiological Parameters ◽  
Final Effluent

This study was designed to determine tlie occurrence and removal of Cryptosporidium spp. oocysts and Giardia spp. cysts, in municipal waste-water by waste stabilisation ponds in tlie Republic of Kenya. Eleven waste stabilisation pond systems located in towns across Kenya were included. A total of 66 waste-water samples were examined for the presence of oocysts and cysts, comprising 11 raw waste-water and 55 pond effluent samples over a two month period. Cryptosporidium spp. oocysts were detected in 6 and Giardia spp. cysts in 9 of the designated pond systems analysed demonstrating their ubiquitous nature throughout Kenya. Oocyst levels detected in raw waste-water samples ranged from 12.5 - 72.97 oocysts/l and various pond effluents between 2.25 - 50 oocysts/l. Cyst levels detected in raw waste-water samples ranged from 212.5 to 6212.5 cysts/l and in various pond effluents from 3.125 to 230.7 cysts/l. No Cryptosporidium spp. oocysts were detected in the final effluent from any pond systems studied (11/11). Whereas no Giardia spp. cysts were detected in the final effluent from 10 of 11 waste stabilisation pond systems studied, one pond system was found to be consistently discharging cysts in the final effluent at concentrations ranging from 40 to 50 cysts/l. The minimum retention period for the removal of Cryptosporidium spp. oocysts and Giardia spp. cysts was 37.3 days. Laboratory experiments were performed to assess physico-chemical and microbiological parameters to express relationships between pond performance and protozoa removal.

Maltodextrin is a carbohydrate ingredient for the production of baby food

2021 ◽  
pp. 8-11
Author(s):  
Сергей Владимирович Симоненко ◽  
Татьяна Алексеевна Антипова ◽  
Светлана Валерьевна Фелик ◽  
Елена Сергеевна Симоненко
Keyword(s):  
Human Milk ◽  
Infant Formula ◽  
Nutritional Value ◽  
Food Products ◽  
Artificial Feeding ◽  
Baby Food ◽  
Carbohydrate Component ◽  
Carbohydrate Composition ◽  
Physico Chemical ◽  
Microbiological Parameters

Организация искусственного вскармливания детей включает использование специализированных продуктов детского питания. Основными принципами создания адаптированных детских молочных смесей является приближение их к составу и свойствам женского молока и соответствие особенностям пищеварения и метаболизма ребенка. Немаловажным моментом при этом является адаптация углеводного компонента. В современных формулах детских адаптированных смесей часть лактозы заменена на мальтодекстрин. Целью настоящих исследований являлось изучение пищевой ценности, показателей безопасности отечественного углеводного ингредиента мальтодекстрина и возможности его применения в специализированной пищевой продукции для детского питания. Результаты исследований органолептических, физико-химических и микробиологических показателей опытного образца мальтодекстрина подтвердили соответствие требованиям, предъявляемым к углеводным ингредиентам для производства продуктов детского питания. При исследовании возможности использования отечественного мальтодекстрина в производстве адаптированных продуктов детского питания подтверждена его целесообразность для оптимизации углеводного состава готового продукта. The organization of artificial feeding of children includes the use of specialized baby food products. The main principles of creating adapted infant formula are to approach the composition and properties of human milk and to match the characteristics of the child's digestion and metabolism. An important point in this case is the adaptation of the carbohydrate component. In modern formulas of children's adapted mixtures, part of the lactose is replaced with maltodextrin. The purpose of these studies was to study the nutritional value, safety indicators of the domestic carbohydrate ingredient-maltodextrin and the possibility of its use in specialized food products for baby food. The results of studies of the organoleptic, physico-chemical and microbiological parameters of the maltodextrin prototype confirmed compliance with the requirements for carbohydrate ingredients for the production of baby food. When studying the possibility of using domestic maltodextrin in the production of adapted baby products, its expediency for optimizing the carbohydrate composition of the finished product was confirmed.

Studies on Physico-Chemical and Microbiological Parameters of Water Samples Before and After Jute Retting

2011 ◽  
Vol 11 (2) ◽  
pp. 210-215 ◽  
Author(s):  
Biswapriya Das ◽  
Sudipta Tripathi ◽  
Ashis Chakrabort ◽  
Kalyan Chakrabart
Keyword(s):  
Water Samples ◽  
Physico Chemical ◽  
Before And After ◽  
Microbiological Parameters

Strong nitrogenous and agro-wastewater: current technological overview and future direction

2004 ◽  
Vol 49 (5-6) ◽  
pp. 1-5 ◽  
Author(s):  
E. Choi ◽  
Z. Yun ◽  
T.H. Chung
Keyword(s):  
Water Reuse ◽  
Waste Treatment ◽  
Advanced Oxidation Process ◽  
Organic Pollution ◽  
Activated Carbon Adsorption ◽  
Carbon Adsorption ◽  
Treated Effluent ◽  
Physico Chemical ◽  
Future Direction ◽  
Refractory Organics

Nitrogen input to our environment has increased tremendously during the last four decades. It has been recognized that most of the nitrogenous wastes are produced from animal farms and agro-industries, which discharge a large amount of nitrogen as well as organics. Various biological and physico-chemical means are considered or applied for nitrogen removal. Particularly, biological nitrite nitrification and denitrification, and struvite precipitation have received more attention as applicable processes for strong nitrogenous waste treatment. The advanced oxidation process appears to be more attractive than activated carbon adsorption in terms of the removal of refractory organics when a further treatment of biologically treated effluent is required. Technologies using membrane bioreactors were very effective for solids separation, while reverse osmosis was found to be efficient for water reuse purpose with sufficient removal of refractory organics and nitrogen along with biological treatment. Reuse or recycling of strong nitrogenous wastes and agro-wastewater will be a desirable direction for the future in order to prevent the nitrogenous and organic pollution.

scholarly journals The Effect of Hawthorn Berry Phenolics and Parsley Roots Fermented Juice on Frankfurters’ Shelf-Life

2018 ◽  
Vol 75 (2) ◽  
pp. 149
Author(s):  
Corina PREDESCU ◽  
Camelia PAPUC ◽  
Georgeta ȘTEFAN ◽  
Gheorghe GORAN
Keyword(s):  
Shelf Life ◽  
Thiobarbituric Acid ◽  
Natural Antioxidants ◽  
Viable Count ◽  
Coliform Bacteria ◽  
Meat Industry ◽  
Physico Chemical ◽  
Residual Nitrite ◽  
Microbiological Parameters ◽  
Fermented Juice

Plant extracts rich in phenolics and vegetal fermented juices rich in nitrite may be used as preservatives in the meat industry. The aim of this study was to evaluate the effects of hawthorn berry phenolics and nitrite from parsley roots fermented juice, on unsmoked frankfurters. Seven lots of frankfurters were prepared. Two lots were prepared using ascorbate and parsley juice nitrite (each preservative 50 ppm, L1; each preservative 25 ppm, L4), two lots were prepared using hawthorn berry phenolics and parsley juice nitrite (each preservative 50 ppm, L2; each preservative 25 ppm, L5), two lots were prepared only with parsley juice nitrite (50 ppm, L3; 25 ppm, L6), while L7, control lot, was prepared with 50 ppm ascorbate and 50 ppm synthetic nitrite. pH, thiobarbituric acid reactive substances, cure efficiency, residual nitrite, total viable count, Enterobacteriaceae and coliform bacteria were determined at 3-day intervals for 15 days. During storage, comparatively with control, the best physico-chemical parameters were found for L4 and L5 of frankfurters, while the best microbiological parameters were found for frankfurters treated with ascorbate and parsley juice nitrite (L1 and L4). The addition of natural antioxidants and nitrite was able to improve unsmoked frankfurters’ shelf-life.

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