scholarly journals CHANGES IN PHYSICO-CHEMICAL PARAMETERS DURING FORCED-AERATION STATIC-PILE CO-COMPOSTING OF CATTLE MANURE WITH CALCIUM CYANAMIDE

2014 ◽  
Vol 22 (2) ◽  
pp. 125-131 ◽  
Author(s):  
Huasai Simujide ◽  
Chen Aorigele ◽  
Chun-Jie Wang ◽  
Jun-E Yu ◽  
Bai Manda ◽  
...  
Keyword(s):  
Comprehensive Evaluation ◽  
Static Condition ◽  
Cattle Manure ◽  
Chemical Parameters ◽  
Limit Value ◽  
Physico Chemical ◽  
Physical And Chemical Parameters ◽  
Mature Compost ◽  
Forced Aeration ◽  
Physical And Chemical

The goal of this research was to determine the effect of CaCN2 addition into manure mixed with sawdust on the composting process under forced-aeration static condition, especially on nitrogen (N). The changes in the physical and chemical parameters over the entire composting period were evaluated. The profile of temperature, pH, and NO3 –-N was improved in the piles mixed with 2%, 3% and 4% CaCN2 (the test piles). The NH4 +-N met the limit value accepted for mature compost. Finally, the additive contents of not less than 2% but not more than 3% in CaCN2 were recommended for this system based upon a comprehensive evaluation of the measured parameters.

scholarly journals The Diversity of Makrozoobenthos as Bio-Indicators of Water Quality of the River Kundur District Labuhanbatu

2021 ◽  
Vol 4 (1) ◽  
pp. 1027-1033
Author(s):  
Winarti Winarti ◽  
Arman Harahap
Keyword(s):  
Total Abundance ◽  
Chemical Parameters ◽  
Observation Station ◽  
Physical Chemical ◽  
Physico Chemical ◽  
Physical And Chemical Parameters ◽  
The Individual ◽  
Physical And Chemical ◽  
Chemical Water

Macrozoobenthos used as a bioindicator of the waters, this happens because of the nature of the benthos which has mpergerakan low so it got a lot of influence from the environment. This study aims to determine the condition of the river Kundur with a view the community structure of macrozoobenthos which include: species composition, abundance, diversity, uniformity and dominance as well as the physical and chemical parameters of water as a paremeter supporters. Based on the results of observations, macrozoobenthos were found during the study in the river Kundur consists of 3 phylum, 4 classes, 17 family with 11 species. The composition of the class of macrozoobenthos in the whole of the observation station consists of a Gastropod (37%), Insecta (23%), Malacostraca (20%), Polychaeta (10%) dan Malacostraca (20%). The value of an abundance ranged from 325,7 - 3309,6 ind/m3. With the value of the total abundance at Station I which is equal to 3690,1 ind/m3, Station II 3723,1 ind/m3, Station III 3692,3 ind/m3 can be categorized diversity are light polluted with the value of the index of uniformity (E) that describes the spread of the individual tends to be uniform or relatively the same. While the condition of the physical-chemical parameters and the substrate bottom of the river Kundur in general has a range of relatively homogeneous, spread evenly throughout the observation stations and still be able to support life macrozoobenthos. To the results of measurements of the parameters of physico-chemical water and substrate in the river kundur in general has a range of relatively homogeneous in the whole observation stations and still be able to support the life of the macrozoobenthos.

scholarly journals Some aspects of the ecology of freshwater algae in the Densu River and two tributaries in Southern Ghana

2014 ◽  
Vol 3 (2) ◽  
pp. 246-257 ◽  
Author(s):  
Ted Y Annang ◽  
RD Yirenya-Tawiah ◽  
GC Clerk ◽  
Thomas Smith
Keyword(s):  
River Water ◽  
Sampling Site ◽  
Freshwater Algae ◽  
Sample Collection ◽  
Chemical Parameters ◽  
Physico Chemical ◽  
Physical And Chemical Parameters ◽  
Chemical Conditions ◽  
Physical And Chemical ◽  
Southern Ghana

Studies on the composition and abundance of the phytoplankton in River Densu and two of its tributaries, Rivers Adeiso and Nsakir were carried out at ten sampling sites, including seven from different regions of the river basin namely Afuaman, Akwadum, Densuso, Manhean, Machigeni, Nsawam and Weija, as well as Adeisoand Pokuase. Sampling was done monthly at each sampling site from January to December, 2006. Physical and chemical parameters of river water were studied. The parameters of the river water varied with the sampling sites and the time of the year. Water samples for phytoplankton identification and enumeration were collected at each sampling site. Physico-chemical conditions of the river were assessed during sample collection or in the laboratory. Correlation analysis showed that there was a positive correlation between algal genera and the measured physical and chemical parameters of the river water. DOI: http://dx.doi.org/10.3126/ije.v3i2.10637 International Journal of the Environment Vol.3(2) 2014: 246-257

scholarly journals A Preliminary Study of the Physico-Chemical Parameters and Potential Pollutant Sources in Urban Lake Rawa Besar, Depok, Indonesia

2021 ◽  
Vol 53 (2) ◽  
Author(s):  
Mangapul Parlindungan Tambunan ◽  
Kuswantoro Marko ◽  
Ratna Saraswati ◽  
Rokhmatuloh Rokhmatuloh ◽  
Revi Hernina
Keyword(s):  
Urban Lake ◽  
Chemical Parameters ◽  
Nitrate N ◽  
Physico Chemical ◽  
Physical And Chemical Parameters ◽  
Pollutant Sources ◽  
Water Quality Status ◽  
Preliminary Study ◽  
Physical And Chemical ◽  
Quality Status

Lake Rawa Besar is an urban lake surrounded by dense settlements and commercial areas that are currently experiencing physical and ecological pressures due to uncontrolled land-use change around the lake. Therefore, this preliminary study aimed to investigate the sustainable management of the lake in order to create a recreational destination area. It was carried out by ascertaining the lake water quality status through the analysis of the physical and chemical parameters and identifying the potential pollutant sources due to land use and human activities. The physical parameters include TDS, TSS, Turbidity, while the chemical parameters include Nitrate-N, Total Phosphate-P, and BOD. Furthermore, field surveys on 30 water samples were conducted once at noon and statistical analysis was used to ascertain the correlation between the physical and chemical parameters. Finally, Geographic Information System (GIS) tools were used to investigate the spatial distribution of the Physico-chemical parameters and the potential pollutant sources. The results showed that based on the six parameters of the water quality status, the lake was lightly polluted. It also showed that three parameters such as Turbidity, BOD, and TSS exceed the permissible limit with 93.3, 66.7, 43.7% of the total samples, respectively. Additionally, a strong correlation existed between BOD and Turbidity with r=0.95, while a medium correlation existed between Nitrate-N and Phosphate-P with r=0.40. The spatial distribution of the concentration of the physico-chemical parameters generally had a varied pattern,  however, Turbidity and BOD had a similar pattern, especially in the bank areas. Finally, domestic and organic wastes were indicated as pollutant sources, which increased eutrophication in the lake.

scholarly journals Analysis of Physico-chemical parameters of salt pans at Newport and Nari situated around Bhavnagar Coast

2015 ◽  
Vol 7 ◽  
Author(s):  
Apexa Rajesh Patadia
Keyword(s):  
Pearson Correlation ◽  
Sampling Site ◽  
Analytical Data ◽  
Total Hardness ◽  
Chemical Characteristics ◽  
Chemical Parameters ◽  
Salt Pans ◽  
Physico Chemical ◽  
Physical And Chemical Parameters ◽  
Physical And Chemical

<p>The present study was carried out to evaluate physico-chemical parameters of two selected sites of salt pans ecosystem located at Bhavnagar coast, Gujarat for a period of one year December-2005 to August 2006. The analytical data obtained from samples become more informative if supplemented with information concerning the sampling site. Hence, the present work is aimed at the assessment of various physical and chemical parameters of water and sediment samples of salterns at Newport and Nari along Bhavnagar coast, Gujarat. The physico-chemical characteristics include temperature, pH, turbidity, salinity, alkalinity, total hardness, total dissolved solids, chloride, calcium, magnesium, sodium, potassium, sulphate and phosphate. The results of various physico – chemical characteristics indicate that with most of the parameters examined the contents recorded were higher in water samples as compared to sediments and also the values were higher at Newport than at Nari. Notable observation was with total hardness and sulphate, where the contents were higher in sediments and the alkalinity, calcium and magnesium contents were higher at Nari than at Newport. The data were subjected by Karl-Pearson correlation coefficient to examine the corelationship in between and among various physical and chemical parameters using SPSS. 15.0.</p>

scholarly journals Study of Rural Groundwater Quality in Brestea Village, Romania

2018 ◽  
Vol 1 (1) ◽  
pp. 393-398
Author(s):  
Maria Popa ◽  
Gabriela-Alina Dumitrel ◽  
Ioana Glevitzky ◽  
Mirel Glevitzky ◽  
Dorin Popa
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Chemical Properties ◽  
Chemical Parameters ◽  
Limit Values ◽  
Physico Chemical ◽  
Physical And Chemical Parameters ◽  
Nitrite Nitrate ◽  
Physical And Chemical

Abstract Water is a social requirement and an important factor in the ecological balance. Water from wells is good for direct consumption if the soil is not contaminated. The quality of drinking water is regulated by Law no. 458/2002 (transposing the Directive 98/83/EC on the quality of drinking water). The aim of this paper was to assess the physicochemical qualities of groundwaters from Brestea village, commune Denta, Timis County. The water samples were taken in 2015 from 10 functional wells. For the source whose physical and chemical parameters have exceeded the limit values, the monthly monitoring of the water quality (microbiological and physico-chemical properties) has been performed for 2 years. At the same time, the pH of the soil near the water sources was also measured. The results highlighted a good connection between the microorganisms from water and the nitrite, nitrate and ammonium content of water. The information can be further used to identify and eliminate the specific pollutants, areas and pollution sources.

Phosphatase activity and its relationship with physical and chemical parameters during vermicomposting of filter cake and cattle manure

2015 ◽  
Vol 96 (4) ◽  
pp. 1223-1230 ◽  
Author(s):  
Jader Galba Busato ◽  
Gabriella Papa ◽  
Luciano Pasqualoto Canellas ◽  
Fabrizio Adani ◽  
Aline Lima de Oliveira ◽  
...  
Keyword(s):  
Phosphatase Activity ◽  
Filter Cake ◽  
Cattle Manure ◽  
Chemical Parameters ◽  
Physical And Chemical Parameters ◽  
Physical And Chemical

The influence of gelatin and starter culture on the physical and chemical parameters of cheeses with different fat content

2018 ◽  
Vol 6 (10) ◽  
pp. 123-130
Author(s):  
Yaroslava Zhukova ◽  
◽  
Pylyp Petrov ◽  
Olena Boloba ◽  
Tetiana Ohrimenko ◽  
...  
Keyword(s):  
Starter Culture ◽  
Fat Content ◽  
Chemical Parameters ◽  
Physical And Chemical Parameters ◽  
Physical And Chemical

scholarly journals Effect of natural disinfectant (Moringa oleifera) and a chemical disinfectant (calcium hypochlorite) on nematode eggs: bioefficiency and impact of physico-chemical variables

2020 ◽  
Vol 10 (2) ◽  
pp. 335-346
Author(s):  
Arnold Landry Fotseu Kouam ◽  
Gideon Aghaindum Ajeagah
Keyword(s):  
Petri Dish ◽  
Nematode Species ◽  
Optical Microscope ◽  
Chemical Parameters ◽  
Calcium Hypochlorite ◽  
Physico Chemical ◽  
Before And After ◽  
Nematode Eggs ◽  
Chemical Disinfectant ◽  
Physical And Chemical

Abstract The aim of this study is to determine the effectiveness of disinfectant on the viability of eggs from three nematode species (Ascaris, Trichuris, Ankylostoma). It was conducted in a microcosm from June 2018 to June 2019. The wastewater scan was sampled using 5 L sterile containers, the sample was arranged in four replicas, three tests and one control. The test samples received three disinfectants (Moringa, calcium hypochlorite and Moringa associated with calcium hypochlorite) at varying concentrations. The physical and chemical parameters were measured before and after the application of each disinfectant. The samples were then observed under an optical microscope. The viability of the eggs was determined by incubating the Petri dish samples at 30 °C for 30 days. The analyses show that some physicochemical parameters can significantly influence the efficacy of disinfectant on the eggs. The calcium hypochlorite associated with Moringa at 0.6 g/L showed greater efficacy on reducing viability and inactivation of eggs with 100% efficacy yield rates on Ankylostoma and Trichuris trichiuria and 97% on Ascaris lumbricoides eggs; this efficacy is significantly different from that observed on samples treated with Moringa and simple calcium hypochlorite. Of the three parasites tested, A. lumbricoides showed greater resistance to the disinfectant.

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