scholarly journals Analysis Water Quality of Springs on the East Slope of Mount Sumbing, Central Java, Indonesia for Sanitation Hygiene Purposes Based on the Physical and Chemical Properties

2021 ◽  
Vol 930 (1) ◽  
pp. 012013
Author(s):  
D Erlinawati ◽  
M R Wibisana ◽  
D P E Putra ◽  
A D Titisari
Keyword(s):  
Chemical Properties ◽  
Shallow Groundwater ◽  
Physical Parameters ◽  
Physical And Chemical Properties ◽  
Chemical Parameters ◽  
Central Java ◽  
Physical And Chemical ◽  
Water Acidity ◽  
And Chemical Properties

Abstract The eastern slope of Mount Sumbing has many springs used as a source of raw water for hygienic sanitation purposes. However, there has been no scientific research showing the quality of springs. Therefore the purpose of this study is to analyze the quality of springs on the eastern slopes of Mount Sumbing for community sanitation hygiene purposes based on water physical and chemical properties. Water samples were taken from several points in the study area and observed for physical parameters (TDS, smell, taste, and temperature) and chemical parameters (acidity, nitrate, fluoride, and sulfates). The results showed that from 30 samples of springs, only one spring fulfilled the Indonesia Minister of Health Regulation No. 32 in 2017. The spring located at STA 51 Kaliloro, Krajan, Kaliangkrik, Magelang Regency. There was a spring classified as deep geothermal groundwater and the others classified as shallow groundwater. Based on the acidity of water, most of the springs on the eastern slopes of Mount Sumbing could be used as hygiene sanitation by treating the water acidity and regulating the purposes of springs.

scholarly journals Effect of Bentonite on the Pelleting Properties of Iron Concentrate

2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
Hao Liu ◽  
Bing Xie ◽  
Yue-lin Qin
Keyword(s):  
Water Absorption ◽  
Chemical Properties ◽  
Poor Quality ◽  
Physical And Chemical Properties ◽  
Iron Concentrate ◽  
Green Ball ◽  
Shock Temperature ◽  
Physical And Chemical ◽  
And Chemical Properties

The physical and chemical properties such as particle size, montmorillonite content, swelling degree, water absorption, and blue absorption of A, B, and C bentonites were studied under laboratory conditions. The effects of adding different quality and different proportion of bentonite on falling strength, compression strength, and shock temperature of green pellet were investigated. The experimental results show that the montmorillonite content, water absorption, and methylene blue absorption of bentonite-B are the highest. And the quality of bentonite-B is the best, followed by bentonite-C and bentonite-A poor quality. When the amount of bentonite-B reduced from 1.5% to 1.0%, the strength of green pellets and the shock temperature both decrease. As the same proportion of A, B, and C bentonites, the green-ball strength and shock temperature are as follows: bentonite-A > bentonite-B > bentonite-C.

Physical and chemical properties of the Goryczkowe and Bystrej Górne vaucluse springs in the Tatra Mountains

2015 ◽  
Vol 46 (6) ◽  
pp. 954-968
Author(s):  
M. Gromadzka ◽  
A. Wolanin ◽  
M. Żelazny ◽  
Ł. Pęksa
Keyword(s):  
Chemical Properties ◽  
Principal Component ◽  
Physical And Chemical Properties ◽  
Tatra Mountains ◽  
Chemical Parameters ◽  
Chemical Composition Of Water ◽  
Physical And Chemical Parameters ◽  
Tatra National Park ◽  
Physical And Chemical ◽  
And Chemical Properties

This paper describes research on two of the largest karst springs in Poland's Tatra Mountains – Goryczkowe and Bystrej Górne – both located in the Tatra National Park. The aim of the study was to determine the potential contributing area for the Bystrej Gorne Spring. Research has shown that seasonal changes in the physical and chemical properties of water in both springs followed a similar pattern; however, observed differences were not statistically significant. Additionally, research has shown that the potential contributing area is different than that previously identified by other researchers. The chemical composition of water obtained from each spring was dominated by Ca2+ and HCO−3, and included small amounts of the biogenic NO−3 ion. The highest values of the measured physical and chemical parameters were noted in winter, while the lowest values were noted in spring and summer. Principal component analysis was used to assess the physical and chemical parameters of water obtained from both studied springs. Water dilution and catchment biological activity were identified as two key processes affecting physical and chemical properties of karst spring water. Several differences were identified between the springs – water temperature, pH, mineralization, as well as the concentration of Mg2+, HCO−3, and SO24.

scholarly journals Physical and chemical evaluation of the use of diesel composite fuel based on ricinic oil and bioethanol as fuel for diesel power plant

2020 ◽  
Vol 222 ◽  
pp. 01004
Author(s):  
A.A. Sadov ◽  
L.A. Novopashin ◽  
L.V. Denezhko ◽  
Yu.B. Cherkasov
Keyword(s):  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Multicomponent Mixtures ◽  
Chemical Parameters ◽  
Chemical Evaluation ◽  
Physical And Chemical Parameters ◽  
Composite Fuel ◽  
Heating Up ◽  
Physical And Chemical ◽  
And Chemical Properties

The purpose of the article is to evaluate physical and chemical properties of mixtures based on ricinic oil and bioethanol, followed by determining the optimal concentrations of elements and the processing method. The study used methods for calculating the physical and chemical parameters of complex multicomponent mixtures with subsequent experimental verification of the accepted assumptions and hypotheses validity. The results of the study showed that heat treatment of ricinic oil by heating up to 330 °C allows for a chemical reaction of modification of ricinic oil (dehydration and splitting) in order to obtain products suitable for mixing with petroleum, and thanks to additional ultrasound treatment, it is possible to provide a higher degree of dispersion of emulsified products and increase the shelf life. The presented analytical method for evaluating and optimizing the physical and chemical properties of mixtures allows for preliminary optimization of their composition and excluding unsuitable mixtures for further research. Laboratory studies aimed at determining physical and chemical parameters of mixtures confirm the results of theoretical studies and according to the results, mixtures with a content of biological components of no more than 60% are identified, which correspond to the indicators of diesel fuel and are recommended for use.

scholarly journals Studi kesesuaian kualitas perairan tambak ikan bandeng (Chanos chanos) di Kawasan Ekowisata Mangrove Sungai Tatah

2020 ◽  
Vol 9 (1) ◽  
Author(s):  
Doni Irawan ◽  
Leni Handayani
Keyword(s):  
Data Analysis ◽  
Research Methods ◽  
Water Samples ◽  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Chanos Chanos ◽  
Minimum Requirements ◽  
Physical And Chemical ◽  
And Chemical Properties

The research objective was to determine the quality of the milkfish pond waters (Chanos chanos) in the Tatah River Mangrove Ecotourism Area. This research was conducted from March to May 2020. Purposive sampling was one of the research methods used to collect data. Water samples were taken once a week (in the morning, afternoon and evening) from six sampling stations. The parameters observed included the physical and chemical properties of the waters. The data analysis used was scoring. The results of the research on the level of quality suitability of pond waters in the Tatah River Mangrove Ecotourism Area indicated that station 2, and 4 were very suitable level of conformity (S1) meaning that it is potential station while station 1, 3, 5 and 6 were quite appropriate (S2) which means that the areas meet the minimum requirements for use in milkfish (C. chanos) cultivation

The comparison of rapeseeds’ oils from hybrid and open-pollinated varieties by their heating values in the aspect of Diesel utilization

2010 ◽  
Vol 1 (1) ◽  
pp. 157-161
Author(s):  
E. Sarkozi ◽  
L. Janosi
Keyword(s):  
Energy Content ◽  
Methyl Esters ◽  
Research Work ◽  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Heating Value ◽  
Biofuel Feedstock ◽  
Physical And Chemical ◽  
And Chemical Properties

The rape is one of the suitable plant species for biofuel feedstock in Hungary. Currently there are over 100 admitted rape sorts recorded in Hungary and their oils’ application as biodiesel proposes new aspects of evaluation. From references it is noticeable that there are differences in the physical and chemical properties of the various rape sorts’ oils and rapeseed-methyl-esters. Our aim is to analyze the differences in the quality of the various rape sorts’ oils and to determine the most appropriate rape sort in the viewpoint of technical utilization. In the course of present research work we have measured the heating values of 21 various rapesorts’ oils -12 from open-pollinated varieties and 9 from hybrids- and examined the differences between them. The outcome values dispersed in the range of the heating values found in the references, but the differences between them are less then the predicted, the variance and the coefficient of variation are reasonably slight, so the examined rape sorts’ oils are similar in the viewpoint of the heating value. Furthermore, the energy content of the rapeseed oils is independent of the type (hybrid or open-pollinated variety) of the plant.

scholarly journals INITIAL GROWTH OF SEEDLINGS OF Eucalyptus dunnii Maiden AS INFLUENCED BY THE ADDITION OF NATURAL POLYMER AND FARMING SUBSTRATES

2016 ◽  
Vol 40 (4) ◽  
pp. 627-637
Author(s):  
Marcio Carlos Navroski ◽  
Maristela Machado Araujo ◽  
Lia Rejane Silveira Reiniger ◽  
Claudimar Sidnei Fior ◽  
Gilmar Schafer ◽  
...  
Keyword(s):  
Dry Matter ◽  
Chemical Properties ◽  
Initial Growth ◽  
Physical And Chemical Properties ◽  
Natural Polymer ◽  
Eucalyptus Dunnii ◽  
Physical And Chemical ◽  
Neck Diameter ◽  
And Chemical Properties

ABSTRACT This study aimed to test different concentrations of natural polymer combined with different substrates in order to maximize the production and quality of Eucalyptus dunnii Maiden as well as the influence of the physical and chemical properties of the substrates. Experiments were conducted in a greenhouse in a randomized design with a 4 x 4 factorial arrangement for different substrates (factor "A") and water-retaining polymer concentrations (factor "B"). The physical and chemical properties of the substrates were also analyzed in each treatment. The seedlings height (H), neck diameter (D), shoot dry matter (SDM), root dry matter (RDM), total dry matter (TDM), H/D ratio and Dickson quality index (DQI) were measured after 90 days of sowing. Both the physical and chemical properties of the substrates have improved by the addition of hydrogel, especially those regarding to porosity, water availability and water holding capacity. In general, the water-retaining polymer concentrations of 2 and 4 g L-1 provided a better seedling growth. Seedlings largest neck diameter was observed at a hydrogel concentration of 6 g L-1. The use of hydrogel has resulted in higher height and neck diameter values when carbonized rice hulls were used as substrate. Therefore, hydrogel concentrations of 2 and 4 g L-1 may increase the quality of Eucalyptus dunnii seedlings and reduce their nursery time.

Impact of Insufficient Cleaning on the Quality of Molybdenum Layer Applied by Thermal Spraying

2013 ◽  
Vol 801 ◽  
pp. 35-40
Author(s):  
Marián Bujna ◽  
Miroslav Prístavka ◽  
Pavol Kaplík
Keyword(s):  
Erosion Resistance ◽  
Thermal Spraying ◽  
Chemical Properties ◽  
Poor Quality ◽  
Physical And Chemical Properties ◽  
High Degree ◽  
Physical And Chemical ◽  
The Impact ◽  
And Chemical Properties

Thermal spraying influences several physical and chemical properties of the coating surface. The most important of them are hardness, density, porosity, corrosion resistance and adhesion. This technology of surface treatment of material is often used for its high degree of hardness. Hardness and erosion resistance are the parameters that need to be achieved particularly in working conditions where there is excessive component wear. In this paper, we deal with the impact of purifying on the quality of molybdenum layer. Insufficient cleaning may result in a poor quality of the sprayed layer. Our aim is to measure and analyse the quality of molybdenum layer thickness applied by thermal spraying after insufficient cleaning.

scholarly journals Solutions to Pollution Problems of Oil

2017 ◽  
Vol 21 (2) ◽  
pp. 5-14
Author(s):  
Andesh Abdrakhmanov ◽  
Berikbay Orazaliyev ◽  
Beibut Zhusin ◽  
Symbat Tynysbekova ◽  
Barbara Krzysztofik
Keyword(s):  
Chemical Properties ◽  
Petroleum Products ◽  
Quality Parameters ◽  
Physical And Chemical Properties ◽  
Motor Oil ◽  
Theoretical Level ◽  
Analysis And Synthesis ◽  
Physical And Chemical ◽  
And Chemical Properties

AbstractThe purpose of the research is to improve the processes of conservation indicators of quality petroleum products (POL). As a hypothesis, it was assumed that the quality of fuel depends on its main quality parameters that most strongly vary during storage and transportation. The methods were applied which are used at the theoretical level of research, such as abstraction, deduction, analysis and synthesis, etc. We presented the main problems of pollution of oil. Moreover, we provided indicators of physical and chemical properties of diesel fuel and motor oil, which characterize their performance and the list of used additives. We analysed the scientific and patent work. We provided solutions to the problem. Correct storage and use of fuel will help maintain its quality parameters and ensure safety and durability of machinery.

scholarly journals Karakteristik Fisika dan Kimia Perairan di Laut Jawa – Ambang Dewakang

2019 ◽  
Vol 4 (1) ◽  
pp. 41
Author(s):  
Hanny Meirinawati ◽  
Mochamad Riza Iskandar
Keyword(s):  
Sea Water ◽  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Mixing Processes ◽  
Java Sea ◽  
Aquatic Productivity ◽  
Physical And Chemical ◽  
Temperature Depth ◽  
And Chemical Properties

<strong>Physical and Chemical Properties of Waters in Java – Ambang Dewakang Sea</strong>.The Java Sea is a region of important pelagic fish production in Indonesia. The distribution of abundance of fish is affected by changes in water physical and chemical properties. The important chemical property that can affect the abundance of the fish is the availability of nutrients. Nutrients are the basic compounds of marine biogeochemical cycles that play important role in increasing aquatic productivity through growth of the phytoplankton. The purposes of this study are to know recent condition of chemical and physical characteristics of the sea water within the region Java Sea ‒ Ambang Dewakang and to investigate relationships among these parameters. This research was conducted in November 2014 at 7 stations in the region. The observed parameters were physical (temperature, salinity, turbidity, density) and chemical such as nutrients (DIN, PO<sub>4</sub>-P, SiO<sub>3</sub>-Si), pH, and DO. CTD (<em>Conductivity-Temperature-Depth</em>) SBE (<em>Sea Bird Electronics</em>) 911 Plus was used to measure water physical properties. Water sample was collected using Rosette sampler, while analysis of nutrients concentration employed methods from Strickland and Parsons 1972. The result showed that temperatures in the Java Sea ranged from 13.06 – 30.33 °C with an average of 25.29 °C, whereas salinity ranged between 33.07 – 34.74 psu with an average of 34.41 psu. Variations within temperature and salinity showed a homogeneous condition due to the influence of mixing processes. Concentration range of DIN (NO<sub>3</sub>-N+NO<sub>2</sub>-N+NH<sub>4</sub>-N), PO<sub>4</sub>-P, SiO<sub>3</sub>-Si were from 0.070 to 0.180 mg/L, from 0.004 to 0.022 mg/L and from 0.082 to 0.361 mg/L, with an average of 0.096 mg/L, 0.010 mg/L, and 0.159 mg/L respectively. The ratio DIN/DIP of 13.24 showed that the waters quality of Java Sea was in the moderate category.

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