The assessment of microbiological and physicochemical characteristics in drainage waters of the Siriu dam

2021 ◽  
Vol 26 (5) ◽  
pp. 2979-2985
Author(s):  
ROBERT RUGINESCU ◽  
◽  
MIRELA MOLDOVEANU ◽  
LARISA FLORESCU ◽  
IOAN PĂCEȘILĂ ◽  
...  
Keyword(s):  
Water Source ◽  
Physicochemical Characteristics ◽  
Mineral Elements ◽  
Physicochemical Analysis ◽  
Iron Oxidizing Bacteria ◽  
External Drain ◽  
Microbiological Parameters ◽  
Corrosive Effect ◽  
Reducing Bacteria ◽  
Drainage Waters

Based on the balneotherapeutic applications of mineral spring water and particularly sulphurous water, the aim of our research was to study the physicochemical and microbiological parameters of some drainage waters of Siriu dam that showed a strong hydrogen sulphide odour. In addition, due to the corrosive effect of some groups of microorganisms, such as iron-oxidizing bacteria and sulphatereducing bacteria, the present paper also aimed to detect their presence in order to signal the need for some disinfection measures. According to physicochemical analysis, there has been found an external drain that is suitable for use in balneotherapy, presenting a balanced content of mineral elements such as sulphur, calcium, silicon, chlorine and potassium. However, due to the presence of potentially toxic phytoplankton microorganisms such as Microcystis sp. and Phormidium sp. it is necessary to disinfect this water source before using it for any purpose. On the other hand, the identification of both sulphate-reducing bacteria and iron-oxidizing bacteria in the drainage waters of Siriu dam should be considered as an alarm signal as they may lead to bio-corrosion and deterioration of metallic or concrete structures, affecting the integrity of the dam and hydropower constructions.

scholarly journals The Effects of Unripe Saba Banana Composite Flour on Acceptance and Physicochemical Characteristics of Biscuits

2021 ◽  
Vol 18 (1) ◽  
pp. 55
Author(s):  
Mariely Ayu Shareenie ◽  
Afham Aisyah Matkhir ◽  
Jahurul Haque Akanda ◽  
Hasmadi Mamat ◽  
Mansoor Abdul Hamid
Keyword(s):  
Resistant Starch ◽  
Physicochemical Characteristics ◽  
Physicochemical Analysis ◽  
Composite Flour ◽  
Good Source ◽  
Sensory Acceptability ◽  
Sensory Acceptance ◽  
Comparison Results ◽  
Banana Flour ◽  
Significant Increment

Biscuits are a popular staple food due to its variety of taste, crispiness and digestibility. Conventional biscuits are rich in carbohydrates, fats and calories but low in dietary fibre (DF), minerals and vitamins. Unripe banana contains high resistant starch (RS) which is beneficial for colon health and helps reduce the risk of cardiovascular diseases and diabetes. This study was conducted to determine the feasibility of substituting wheat flour (WF) with unripe Saba banana flour (USBF) to produce biscuits with sensory acceptance and characterising its physicochemical properties. A total of nine (9) formulations were developed by incorporating WF with USBF (10-90%). These formulations were tested for sensory acceptance with the best formulation then proceeded for physicochemical analysis. Sample F5 (50% USBF and 50% WF) was chosen as the best formulation and compared with the control biscuit (100% WF) for physicochemical characteristics. The comparison results showed that F5 biscuit had significant increment (p<0.05) in ash (5.72%), RS (6.17%) and DF (6.26%) as well as significant reduction (p<0.05) in moisture (2.78%) and protein (5.41%). In terms of texture, the hardness (883.33 g) of F5 biscuit was significantly reduced (p<0.05). F5 Biscuits showed significant increase (p<0.05) in RS and exhibited a good source of DF without diminishing its sensory acceptability.

scholarly journals Residual Agroforestry Biomass–Thermochemical Properties

Forests ◽  
2019 ◽  
Vol 10 (12) ◽  
pp. 1072 ◽  
Author(s):  
Teresa Enes ◽  
José Aranha ◽  
Teresa Fonseca ◽  
Carlos Matos ◽  
Ana Barros ◽  
...  
Keyword(s):  
Trace Elements ◽  
Elemental Analysis ◽  
Fossil Fuels ◽  
Chemical Properties ◽  
Mineral Elements ◽  
Agricultural Wastes ◽  
Heating Value ◽  
Corrosive Effect ◽  
The Difference ◽  
Combustion Processes

Research Highlights: Biomass from Mediterranean agroforestry vegetation may be a potential source of renewable energy. However, due to the high heterogeneity of this type of resource, the study of its characteristics becomes necessary for its efficient use. Objectives: The aim of this study was to evaluate the thermal and chemical properties of 14 different kinds of agroforestry biomass groups: shrubs, forest, and agricultural wastes. Materials and Methods: The higher heating value (HHV), the elemental analysis (C, H, O, N, S), ashes, mineral elements (Na, K, Ca, Mg, and P), trace elements (Mn, Fe, Zn, Ni, Cu, Cr, and Cd) and halogen elements (F and Cl) were quantified and compared with CEN/TS 147775 and CENS/TS 14961 standards, looking forward to future use for energy purposes, namely through combustion processes, as an alternative to fossil fuels. Results: The shrubs present the highest values of higher heating value (20.5 MJ kg−1), followed by the forest wastes (19.2 MJ kg−1) and the lowest in the agricultural wastes (18.5 MJ kg−1). Concerning the elemental analysis, the difference between groups C, H, and O are very small and not statistically significant, while for N, S and ashes values are higher in agricultural than shrubs and forestry wastes. The same tendency was found for the mineral nutrients. For the trace elements, the lowest content of Mn, Fe, and Zn is found in agricultural, Ni, and Cr content in the shrubs and Cu in the forest wastes. The halogen elements are present in greater amount in shrubs than agricultural and forest wastes. Conclusions: Although the high values of the halogen elements which may raise sintering problems and corrosive effect on metal parts in furnace and boiler, in general the shrubs biomass are those with better characteristics for energy uses, namely through combustion processes.

scholarly journals Culture-Based Characterization of Bacteria Associated with Fish Pond Wastewater Undergoing Treatment Using Plants

2021 ◽  
pp. 1-10
Author(s):  
C. C. Niyi-David ◽  
S. A. Wemedo ◽  
N. P. Akani ◽  
S. I. Douglas
Keyword(s):  
Heterotrophic Bacteria ◽  
Physicochemical Characteristics ◽  
Water Bodies ◽  
Pistia Stratiotes ◽  
Fish Pond ◽  
Wastewater Management ◽  
Fish Ponds ◽  
Coliform Count ◽  
Microbiological Parameters ◽  
Wastewater Samples

Fish pond wastewater management is one of the problems having the greatest impact on the environment. This untreated fish pond waste water contains organic materials, pathogenic microorganisms, nutrients and toxic compounds, which when discharged into the environment and it runs off into the water bodies in excess could cause algal bloom (eutrophication) of the receiving waters. Port Harcourt is a riverine area, many of the fish farmers discharge their wastewater direct into the water bodies or into drainages that flows into the water bodies and this act is harmful to humans and the environment as a whole. The determination of the microbiological and physicochemical characteristics and remediation of fish wastewater using Eichhornia crassipes and Pistia stratiotes were investigated. The physicochemical and microbiological parameters of fish pond wastewater were monitored at intervals from 1-70days. Fish wastewater samples were collected from twelve fish ponds (6 plastic tanks and 6 concrete tanks) using standard procedures.  Identification of bacteria was carried out using colonial morphological and biochemical characteristics of the isolates. A total of 194 bacterial isolates belonging to eleven genera were identified from the twelve fish ponds with 6 concrete tanks having  total heterotrophic bacteria, coliform counts, Salmonella Shigella counts, feacal coliform count, Vibro count,  and Pseudomonad count that ranged from 4.78 ± 0.5×104 to 5.74 ± 0.39×105, 4.06 ± 0.06 ×104, to 5.8 ± 0.43 ×105, 4.3 ± 0.24×104 to 4.99 ±0.42 ×104, 4.18 ± 0.39 ×104 to 5.08 ± 0.43 ×105 , 4.08±0.35 x 105 to 5.24±0.46 x 105 and 4.1 ± 0.3× 104 to 5.15 ± 0.44 ×104 cfu/ml, respectively and 6 plastic tanks having  total heterotrophic bacteria, coliform counts, Salmonella Shigella counts, feacal coliform count, Vibro count,  and pseudomonad count that ranged from 4.55 ± 0.46×104 to 5.74 ± 0.4×105, 4.43 ± 0.23 ×104, to 5.78 ± 0.36 ×105, 4.00 ± 0.5×104 to 5.00 ±0.47 ×105, 4.18 ± 0.39 ×104 to 5.17 ± 0.45 ×105 , 3.78±0.35x103 to 5.24 ± 0.46x105 and 3.81 ± 0.26× 103 to 5.15 ± 0.44 ×105 cfu/ml, respectively. The bacteria isolates were Staphylococcus, Micrococcus, Bacillus, Enterococcus, Proteus, Pseudomonas, E. coli, Salmonella, Klebsiella, Vibrio and Shigella sp. The presence of these organisms is an indication of lack of qualitative pond management which could become harmful to both fishes andhumans in the food web systems. Therefore, there is the need to protect our water sources for aquaculture purposes and sustainable development through the detection of aquatic infectious substances and possible control of these microbes.

scholarly journals Physico-Chemical and Microbiological Qualities of Water From Wells, Drillings and Tanks Used as Drinking Water in the Municipality of Allada (Benin, West Africa)

2017 ◽  
Vol 13 (15) ◽  
pp. 69
Author(s):  
Sohounou Marc ◽  
Vissin Expédit Wilfrid ◽  
Sintondji Luc Olivier ◽  
Houssou Christophe S. ◽  
Agbossou K. Euloge ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Drinking Water ◽  
Water Source ◽  
Total Dissolved Solids ◽  
Physicochemical Analysis ◽  
High Concentration ◽  
Dissolved Solids ◽  
Physico Chemical ◽  
High Turbidity

Water, source of life, is also a source of disease when it is polluted. The aim of this study is to analyze the physicochemical quality and the bacteriological quality of the wells, boreholes and tank for drinking water in the Commune of Allada. The methodology is based on the collection of data, data processing and analysis carried out at the Laboratory for Quality Control of Water and Food (LCQEA) of the Ministry of Health. From the water sampling carried out at three (03) traditional wells, two (02) boreholes, two (02) tanks and water of river (02), bacteriological and physicochemical analysis were performed. The results showed that pH is higher at the tank than other water sources. Well 3 (P3) has a very high electrical conductivity (EC) which was 384.95 μS / cm and 192.47 mg / L for total dissolved solids (TDS). The tank 2 exhibited high value in pH 9.14; 71.72 (μS / cm) for the electrical conductivity (CE) and 35.86 mg / L, in total dissolved solids (TDS). Well 2 (P2) has a high turbidity of 4.53 (NTU) at all analyzed water points. The concentration of iron, copper nickel and cobalt remains low(less than 0.4 mg / L).Wells 2 and tank 1 are concentrated in lead, respectively 20.75mg / L and 13.71mg / L. Tank 1 and 2 have a high concentration of cadmium compared to other water points. The presence of Escherichia coli with a high concentration at home SONEB (39 CFU) and at well 2 (7.10 2 ) was found. In view of these results some recommendations were made.

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