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Wyszukujesz frazę "Physicochemical properties" wg kryterium: Wszystkie pola


Tytuł:
Physicochemical properties and selected metals in soils of Ohaji-Egbema, Imo State, Nigeria
Autorzy:
Chukwuemeka, Apakama N.
Ngozi, Verla E.
Chukwuemeka, Ihenetu S.
Wirnkor, Verla A.
Powiązania:
https://bibliotekanauki.pl/articles/1114214.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Characterization
Heavy metals
Oil pollution
Opis:
This study assesses the physiochemical characteristics and heavy metals content of crude oil polluted soils and non-polluted soils from Ohaji/Egbema, Imo State. Soil samples were collected at depths of 0-30 cm at each sampling point and then analyzed using standard analytical methods. Data from the five areas were compared to standards for soils in Nigeria and in World Health Organization (WHO) data banks. The results obtained from the analysis showed an average pH of (4.88 ± 0.02 to 5.02 ± 0.04) for polluted soil and (6.57 ± 0.05 to 6.82 ± 0.03) for non-polluted soil, electrical conductivity (571 ± 1.1 to 592 ± 0.8 µS/cm) for oil polluted soil and (383 ± 0.5 to 415 ± 1.6 µS/cm) for non-polluted samples, moisture content (5.2 ± 0.2 to 9.1 ±0.1 %) for polluted soil and (4.5 ± 0.1 to 4.7 ± 0.3 %) for non-polluted soil samples. There was no significant difference in temperature and organic matter for both the polluted and non-polluted soil samples. The heavy metals analysis results showed Fe3+ (0.615 to 0.989 ppm) for oil-polluted soil samples and (0.0453 to 0.273 ppm) for non-polluted soil samples, Pb2+ (0.017 to 0.180 ppm) for oil-polluted soil and (0.008 to 0.010 ppm) for non-polluted soil. The study reveals that areas that are polluted need urgent remediation if the soil is to be used for agricultural purposes.
Źródło:
World News of Natural Sciences; 2017, 10; 39-48
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of acid whey as starter culture on selected physicochemical properties of fermented pork sausage
Autorzy:
Ferysiuk, Karolina
Wójciak, Karolina M.
Solska, Elżbieta
Powiązania:
https://bibliotekanauki.pl/articles/1178212.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
acid whey
fermented sausage
physicochemical properties
pork
starter culture
Opis:
The aim of the study was to evaluate the effect of acid whey as a starter culture on selected physicochemical properties of fermented pork sausage after ripening (21 days). Four variants of the product have been produced. The first variant (PKS) - cured sausage (2.8%) with starter cultures. Second variant (SSK) – salted sausage (2.8%) with acid whey (5%). Third variant (SKS) – salted sausage (2.8%) with starter cultures. In the fourth variant (PSK), sea salt (2.8%) and acid whey (5%) were used. The research included determination of pH value, water activity, TBARS indicator, analysis of total content of haem pigments and heme iron, determination of color parameters by CIE L * a * b * system and analysis of sausage texture parameters (TPA). The pH values of sausages with acid whey were significantly lower compared to fermented sausages with starter cultures. The highest TBARS index was observed in the SSK (0.612 mg MDA / kg), and the lowest in the PKS sample (0.118 mg MDA / kg). The highest overall content of heme dyes and heme iron was recorded in the PSK test. A higher share of redness was observed in the general tone of color in cured sausages (PKS, PSK) by about 1-2 units compared to salted samples (SSK, SKS). In case of texture, significantly higher values of the hardness parameter were observed in the PSK test as compared to the remaining test samples. Based on the tests, it has been found that it is possible to use acid whey as a starter culture in fermented pork sausage. However, the best results were obtained in the curing sample with acid whey (PSK).
Źródło:
World Scientific News; 2018, 93; 10-18
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Morphological and Physicochemical Properties of Basaltic Soils on a Toposequence in Ikom, South Eastern Nigeria
Autorzy:
Olim, D. M.
Afu, S. M.
Ediene, V. F.
Uko, I. E.
Akpa, E. A.
Powiązania:
https://bibliotekanauki.pl/articles/1078031.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Physico-chemical properties
basaltic soils
fertility status
management practices
morphological properties
Opis:
Three profile pits were sunk along a toposequence of basaltic soils in Ikom, Cross River State to determine their morphological and physicochemical properties. The profile pits were morphologically described and thirteen (13) soil samples were collected from different horizons of the profiles for physicochemical analysis. Morphologically, the soils were deep and well drained with no concretions. The colour of the surface soils varied between dark reddish gray (5YR4/2) and dark brown (7.5YR 3/2) to dark reddish brown (5YR 3/4), while that of the subsurface varied between red (2.5YR 4/6) to reddish brown (2.5YR 4/4). The soils had sub-angular blocky structure of different grades and classes with predominantly clayey texture in the Ap horizons and very gravelly clayey texture in the Crtg horizons. The chemical analysis revealed that exchangeable Ca2+ was the most dominant cation amongst the exchangeable bases. The soils were low in total nitrogen, organic carbon, available phosphorus and very high in base saturation. The study showed that the soils are moderately fertile and as such, a lot has to be done to improve their fertility status through the application of organic and inorganic fertilizers with good management practices such as mulching with crop residue after harvest, sowing of crops at low density per hectare, conservative tillage, strip cropping, crop rotation and shifting cultivation to ensure sustainable productivity.
Źródło:
World News of Natural Sciences; 2019, 22; 84-92
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Physicochemical Properties of Soils derived from Sandstone Parent Materials under Selected Land use types at Agoi-Ibami in Central Cross River State, Nigeria
Autorzy:
Eyong, M. O.
Akpa, E. A.
Powiązania:
https://bibliotekanauki.pl/articles/1076791.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Physicochemical properties
Sandstone
land use types
Opis:
Three profiles were sited on the major landscape elements of crest, middle slope and lower slope on three land uses; Forest (FS), Rubber (RS) and arable cropping (AS) at Agoi-Ibami in Central Cross River State, Nigeria. For study purposes, soil samples were collected from the morphogenetic horizons for the analysis of physical and chemical properties. Results showed that the surface horizon textures were mostly sandy loams with little sandy clay loam, while subsurface textures were mostly sandy clay loams with few silt clay loams and clays. The bulk densities were below the ranges of 1.46 to 1.63 g cm-3 for silts and clays and 1.75 g cm-3 for sands. This imposes stresses such as mechanical resistance to root penetration, decrease in cultivation and organic matter. The surface and subsurface pH values vary from 4.9–4.5 in FS, 4.9-4.6 in RS and 4.9 in AS, indicating that the soils are very strongly acidic. The Organic carbon contents was low with mean values of 4.33 and 0.6 % in surface and subsurface for FS, 2.10 and 0.50 % for surface and subsurface for RS, while surface and subsurface values proved to be 0.57 and 0.31 % for AS. The nitrogen contents was also low, mean values of 0.16 and 0.06 % for surface and subsurface for FS, 0.23 and 0.08 % for surface and subsurface for RS, and 0.19 and 0.10 % for surface and subsurface for AS. The content and available phosphorus are equally low, except for AS, with surface mean values ranging from 11.52 mg kg-1 to 13.87 mg kg-1. The exchangeable cations, Ca, Mg, K, and Na were very low, while exchangeable H+ and Al3+ were high. Base saturation was also low in FS and AS (< 50%) in surface soils, but higher in AS in the surface and in RS in the subsurface soils. The mean values of organic matter were 4.33 and 0.16 %. The land use should, therefore, be adjusted by application of recommended inorganic fertilizers and organic matter so as to support growth of crops such as maize, yams, cassava etc.
Źródło:
World News of Natural Sciences; 2019, 23; 1-12
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Minerals content, essential oils composition and physicochemical properties of Citrus jambhiri Lush. (Rough Lemon) from the Sudan
Autorzy:
Mohammed, A. M. H.
Ibrahim, M. A
Omran, A. A.
Mohamed, E. M.
Elsheikh, S. E. M.
Powiązania:
https://bibliotekanauki.pl/articles/412508.pdf
Data publikacji:
2013
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Citrus jambhiri
Rutaceae
atomic absorption spectroscopy (AAS)
Flame Atomic Emission Spectroscopy (FAES)
metal content
essential oils
Opis:
Minerals content of Citrus jambhiri (rough lemon) fruit was qualitatively and quantitatively analyzed using atomic absorption spectroscopy (AAS) and flame atomic emission spectrometry (FAES). The peel, moisture and ash contents of rough lemon were found to be 18.35 %, 23.75 % and 2.04 % respectively. Vitamin C (ascorbic acid) of rough lemon juice was found to be 70.0 mg/100 g. The chemical composition of essential oil of rough lemon peel was determined. The major compound was found to be limonene (84.5 %) followed by sabinene, β-myrcene, α-terpineol, 1,3-tetradecadiene and linalool.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2013, 9, 1; 25-30
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cyanobacterial species Biodiversity in Mahasamund district of Chhattisgarh region, India
Autorzy:
Sharma, Sangita Devi
Sahu, Kaushilya
Jain, Pankaj Kumar
Powiązania:
https://bibliotekanauki.pl/articles/1118876.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Cyanobacterial screening
Rice fields
physicochemical properties of soil
Opis:
Rice is the principal crop of the Chhattisgarh State. It covers 66% of all cultivable land and is mostly grown within the kharif cropping season. To increase sustained productivity without decreasing soil quality, algal bio fertilizers are widely used in the State. Hence, the culture of cyanobacterial bio fertilizers has been started on a regional basis. This includes survey, isolation and screening of stress-tolerant cyanobacteria. Thus, this study concerns the characterization of physical and chemical properties of soil collected from Mahasamund districts of Chhattisgarh state with respect to the biodiversity of cyanobacteria.
Źródło:
World News of Natural Sciences; 2017, 7; 1-15
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determination of oil and biodiesel content, physicochemical properties of the oil extracted from avocado seed (Persea americana) grown in Wonago and Dilla (gedeo zone), southern Ethiopia
Autorzy:
Hiwot, Tsegay
Powiązania:
https://bibliotekanauki.pl/articles/1193051.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
avocado seed oil
biodiesel
Soxhlet extraction
physicochemical properties
Wonago
Dilla
n-hexane
Opis:
The avocado seeds were collected from Dilla and Wonago in gedeo zone, southern part of Ethiopia for oil extraction and biodiesel production. The collected seeds were oven dried and crushed in to powder by mortar and pestle. A soxhlet extraction was used for extraction of the oil. The solvent used for oil extraction was n-hexane. The extracted oil was separated from the solvents by vacuum rata evaporator. The oil content, biodiesel content and the physico-chemical parameters of the oil as well as the biodiesel were determined .The oil content and biodiesel content is 27.6% and 95.2% for avocado seed grown in wonago and 27.2% and 94.86% for avocado seed grown in Dilla respectively. The physico-chemical parameters of the oil and biodiesel were determined and the result shows that the acid value of (4, 4.3, 0.89, 0.92), saponification value (223, 219), Kinematic viscosity (36, 7, 5.02, 37.44, 5.15), Density (933, 882, 936, 884 g/ml), Higher heating (38, 40.5, 37, 40), Ester content (95.2, 94.86) respectively. Based on the GC-MS analysis of the biodiesel, four FAME compounds were identified. These are methyl palmitate, methyl linoleate, methyl oleate and methyl stearate. From the physicochemical properties of the biodiesel determined avocado seed oil methyl ester could be used as an alternative energy resource in diesel engine.
Źródło:
World Scientific News; 2016, 58; 133-147
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pollution discharge Scenario of Dyeing Industries along Dombivali Industrial Belt of Mumbai, India
Autorzy:
Singare, S. S.
Dhabarde, S. S.
Powiązania:
https://bibliotekanauki.pl/articles/412448.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
industrial effluents
physicochemical properties
heavy metals
dyeing industries
Dombivali industrial belt
Mumbai
Opis:
The paper deals with monitoring of pollution arising due to dyeing industries located along the Dombivali industrial belt of Mumbai, India. The study was carried for the period of one year from June, 2012 to May, 2013 to study the level of toxic heavy metals and the physico-chemical properties of waste water effluents discharged from the above industries. The concentrations of Cu, Ni, Cr, Pb, Fe and Zn were found to be maximum of 44.78, 2.50, 1.75, 1.45, 64.22 and 13.22 ppm respectively in the industrial waste water effluent.It was observed that the pH value was maximum of 12.30 in the month of June while the conductivity was found to be maximum of 48000 μmhos/cm in the month of February. The majority of physco-chemical parameters like alkalinity, salinity and total solid content (TS) were observed to be maximum in the month of February having values of 3578, 44.08 and 40450 ppm respectively. The high cyanide (0.18 ppm) and phosphate (112.90 ppm) levels were reported in the effluents released during the month of March. The industrial effluent released in the month of June was reported to have high hardness, chloride and COD content having the values of 743, 2381, 8957 ppm respectively; while the DO content was found to be very low of 2.77 ppm. The BOD content in the effluents was found to be maximum of 603 ppm in the month of October. The results of present study indicates that the existing situation if mishandled can cause irreparable ecological harm in the long term well masked by short term economic prosperity due to extensive industrial growth.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 3; 48-55
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pollution Scenario due to discharge of effluent from Agrochemicals and Pesticides Manufacturing Industries of Dombivali Industrial Belt of Mumbai, India
Autorzy:
Singare, P. U.
Dhabarde, S. S.
Powiązania:
https://bibliotekanauki.pl/articles/412480.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
industrial effluents
physicochemical properties
heavy metals
agrochemicals
pesticides
Dombivali industrial belt
Mumbai
Opis:
The paper deals with monitoring of pollution arising due to agrochemicals and pesticides manufacturing industries located along the Dombivali industrial belt of Mumbai, India. The study was carried for the period of one year from June, 2012 to May, 2013 to study the level of toxic heavy metals and the physico-chemical properties of waste water effluents discharged from the above industries. The average concentration of Cu, Ni, Cr, Pb and Zn was found to be maximum of 29.86, 0.90, 1.16 and 1.19 ppm respectively in summer season, while average Fe concentration was maximum of 51.10 ppm in winter season. The average pH value of the effluent was found to be maximum of 12.95 in summer season, while average conductivity value was maximum of 21085 μmhos/cm in rainy season. The majority of physco-chemical parameters like alkalinity, hardness, salinity, chloride, cyanide, phosphate, total solid, BOD and COD content were found to be maximum in summer season having the average values of 1918, 186, 4, 11.20, 0.07, 81, 6391, 685 and 2556 ppm respectively. The average DO content was found to be low of 4.5 ppm in winter season. It was observed that the concentration level of majority of the toxic heavy metals and physico-chemical properties were above the tolerable limit set for inland surface water. The results of present study indicates that the existing situation if mishandled can cause irreparable ecological harm in the long term well masked by short term economic prosperity due to extensive industrial growth.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 3; 8-15
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Restoration of Charcoal-Site Soil Properties on Modified Land Models through Bioremediation Potential of Peanut (Arachis hypogaea L.)
Autorzy:
Mejico, Siegfred M.
Garcia, Renier B.
Familara, Joanne A.
Powiązania:
https://bibliotekanauki.pl/articles/1077471.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Arachis hypogaea
bioremediation potential
charcoal site soil
fire-induced perturbation
peanut
peanuts
physicochemical properties
Opis:
Burning can substantially change vegetation status, and enhance the soil erosion of previously productive areas (Santin & Doerr, 2016). This is why bioremediation techniques have been developed to accelerate the recovery of soil properties. In this four month-long study, the bioremediation potential of peanut plants was tested in restoring charcoal-site soil properties. The experiment had three set-ups, a positive control and a control that had undergo pyrolysis for a week and then was planted with peanuts. The moisture content and pH, Nitrogen, Phosphorus and Potassium (NPK) of all soils were tested with a soil kit from the Department of Agriculture, before and after pyrolysis and after four months, which was also validated by the Bureau of Soils. In the experiment, plant morphology, mainly height, number of leaves and leaf area index (LAI) showed a linear increase all throughout the study, unlike the number of flowers. These were sporadic, with first appearance on week 4, and had a peak of 16 flowers at week 10 from 14 pods. With regard to soil properties, planting peanuts made the soil alkaline (7.3 - up from 5.8 pH after pyrolysis), while Nitrogen content increased from low to medium. In contrast, Phosphorus levels stayed high all throughout the study, while Potassium levels decreased after the pyrolysis and become deficient after four months. Moreover, the moisture content increased from 3.905 after pyrolysis, to 12.69. These results provide evidence that the peanut plant has bioremediation potential on charcoal-site soils after a four month long treatment period.
Źródło:
World News of Natural Sciences; 2019, 23; 321-335
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pollution due to Textile Industries along Dombivali Industrial Belt of Mumbai, India
Autorzy:
Singare, P. U.
Dhabarde, S. S.
Powiązania:
https://bibliotekanauki.pl/articles/411756.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
industrial effluents
industrial pollution
physicochemical properties
toxic heavy metals
textile industries
Dombivali industrial belt
Mumbai
Opis:
The paper deals with monitoring of pollution arising due to textile based industries located along the Dombivali industrial belt of Mumbai, India. The study was carried for the period of one year from June, 2012 to May, 2013 to study the level of toxic heavy metals and the physico-chemical properties of waste water effluents discharged from the above industries. The concentration level of majority of toxic heavy metals like Cu, Ni, Pb, and Zn were reported to be maximum of 45.58, 2.00, 2.06 and 9.20 ppm respectively in the month of April, while Cr and Fe concentration levels were found to be 2.50 and 55.30 ppm in the month of March. The effluent samples collected in the month of July was reported to show high BOD content of 564 ppm, while COD content was maximum of 2436 ppm in the month of October. The effluent samples collected in the month of January was having very low DO content of 3.21 ppm and high cyanide content of 0.09 ppm. The alkalinity, hardness and chloride content were maximum of 2158, 198 and 2765 ppm respectively in the effluent samples collected in the month of February. The effluents were having high total solid content of 8269 ppm during the month of April, while the salinity and phosphate contents were reported high of 5.64 and 125.70 ppm during the month of May. It was observed that the concentration level of majority of toxic heavy metals and the values of various physico-chemical parameters were above the tolerable limit set for inland surface water. The present experimental data on environmental risk assessment studies due to textile industries may be regarded as an aid towards a better understanding of the problem arising due to such industries. There is a need to convey the message that prevention of adverse health effects and promotion of health are profitable investments for employers and employees as a support to a sustainable development of economics.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 3; 24-31
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Litter decomposition and release of nutrients form Eucalyptus camaldulensis leaf on Eucalypt plantation soils
Autorzy:
Ndibe, T. O.
Onwumere, G. B.
Bulus, T.
Powiązania:
https://bibliotekanauki.pl/articles/1182833.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
e. camaldulensis
leaf litter decomposition
physicochemical and microbiological properties
eucalypt plantation
nutrient release
Opis:
The decomposition and nutrient release from the leaf litter of Eucalyptus camaldulensis in six different plots under Eucalypt plantation soils were investigated. Six soil samples as well as leaf litter from each plot were collected from the plantation. Using standard methods, the soil samples as well as the leaf litter samples were analyzed for chemical properties (pH, Organic carbon, nitrogen, phosphorus, potassium, calcium and magnesium). Microbiological characteristics (Total viable bacteria and fungi, and Carbon (IV) oxide evolution) of the decaying leaf litter samples were also determined. All analyses were done at day 1, 30 and 60 of the decomposition period. Litterbag study was employed; each litterbag contained a soil and its corresponding leaf litter obtained from the particular plot were designated as E1 – E6. The decomposition rates of the litter in E1, E2, E3, E4, E5 and E6 were found to be 0.00393, 0.00331, 0.00479, 0.00571, 0.00548 and 0.00271 respectively. The results showed that there was a general decrease in nutrient status of the litter and an increase in soil nutrient during the decomposition period. Pearson’s correlation matrix revealed that there was a positive correlation in the release of nutrient from the leaf litters and their return to the soil at day 1, 30 and 60 in almost all the samples. It was also found that the total viable bacteria and fungi were statistically associated. These were attributed to their different soil microbiological and chemical properties. It is concluded from this study that decomposition and release of nutrient from E. camaldulensis leaf litters in different plots under Eucalypt plantation soils are differed according to plot condition.
Źródło:
World Scientific News; 2017, 62; 24-45
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Functional properties of neem oil as potential feedstock for biodiesel production
Autorzy:
Bhandare, P.
Naik, G.R.
Powiązania:
https://bibliotekanauki.pl/articles/11717.pdf
Data publikacji:
2015
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
functional property
neem
seed oil
Azadirachta indica
feedstock
biodiesel production
physicochemical parameter
Opis:
Fossil fuel resources are decreasing daily while biodiesel fuels are attracting increasing attention worldwide as blending components or direct replacements for diesel fuel in vehicle engines. In this experiment the seed oils of 30 Neem (Azadirachta indica. A. juss) biotypes were screened and evaluated for their physio-chemical parameters for oil content, biodiesel yield, density, viscosity, iodine value , free fatty acid and saponification value. Hence the neem seed oil tested in this current study could be the potential sources of raw material for biodiesel production.
Źródło:
International Letters of Natural Sciences; 2015, 07
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Monitoring the health of sediment ecosystem along the Mahim Creek of Mumbai - a study of physico-chemical properties
Autorzy:
Singare, P.U.
Ferns, S.E.L.
Powiązania:
https://bibliotekanauki.pl/articles/11793.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
monitoring
health
sediment ecosystem
conductivity
Mahim Creek
Mumbai city
physicochemical property
Opis:
The present study was performed for the period of one year from June 2012 to May 2013 in order to understand the physico-chemical properties of sediments samples collected along the Mahim Creek of Mumbai. The annual average pH value of the creek sediments was recorded as 9.22. It is feared that such conditions may increase the alkalinity of Creek water which according to USEPA will increase the physiological stress of many aquatic species resulting in decreased reproduction, decreased growth, disease, or death thereby reducing the biological diversity of the Creek. The total organic matter in the creek sediments was found to be maximum of 10.30 % with an annual average concentration of 6.29 %. Although organic matter is a primary source of food for benthic organisms and is important in maintaining a viable ecosystem, too much of organic matter deposited in the sediments will be responsible for depletion in dissolved oxygen content of the creek water causing unpleasant odours and may also increase the rate of eutrophication. From the results it appears that as India moves towards stricter regulation of industrial effluents to control water pollution, greater efforts are required to control the discharge of pollutants into the ecosystems.
Źródło:
International Letters of Natural Sciences; 2014, 12, 1
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Water pollution along the Mahul Creek of Mumbai, India – Study of physico-chemical properties
Autorzy:
Singare, P.U.
Ansari, M.V.A.
Dixit, N.N.
Powiązania:
https://bibliotekanauki.pl/articles/10886.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
water pollution
Mahul Creek
creek water
Mumbai city
India
physicochemical property
industrial effluent
Opis:
The present study was performed for the period of one year from January 2013 to December 2013 in order to understand the physico-chemical properties of Mahul Creek water. From the results of our study it was observed that the annual average COD level was 362.09 ppm which was far higher than the maximum tolerable level of 250 ppm set for inland surface water as well as for marine coastal water. The annual average conductivity was found to be 6122.81 μS cm-1 which was very much above the conductivity limit for inland surface water of 1000 μS cm-1 set by Central Pollution Control Board (CPCB) for propagation of fisheries. The annual average total alkalinity level was recorded as 166.25 ppm, which according to the UN Department of Technical Cooperation for Development (1985) was found to be strongly alkaline. The annual average hardness level of the creek water was found to be 2488.65 ppm which was above the limit of 300 ppm set by ISI. From the results of the present investigation it seems that the time has come to implement proper effluent water treatment techniques and enforcement of pollution control by the regulatory authority on the indiscriminate discharge of industrial wastewater into water bodies.
Źródło:
International Letters of Natural Sciences; 2014, 11, 1
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł

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