Influence of Nano-Modification on Structural, Mechanical and Physico-Chemical Characteristics of Bentonite

2021 ◽  
Vol 316 ◽  
pp. 34-39
Author(s):  
Artem E. Buntin
Keyword(s):  
Mechanical Characteristics ◽  
Chemical Characteristics ◽  
Absorption Bands ◽  
Similar Nature ◽  
Silicon Oxides ◽  
X Ray ◽  
Physico Chemical ◽  
Calcium Magnesium ◽  
The Republic ◽  
Silicon Oxygen

The paper studies the influence of nanodispersed aluminum and silicon oxides on the structural, physico-chemical and mechanical characteristics of calcium-magnesium bentonite deposits of the Republic of Tatarstan, in order to determine the optimal concentrations of the nanomodifier, and to improve the performance of respective materials. It was found that nanomodification of bentonite increases the strength of samples after firing by more than 1,5 times, the adsorption index by 20–25 %. The optimal concentration of nanoparticles was determined by changing the properties. The methods of Brunauer-Emmett-Teller (BET), x-ray phase analysis and infrared spectroscopy show an increase in the specific surface area, a change in the phase composition of the annealed samples, the intensity and position of the characteristic absorption bands, as well as the chemical bond silicon-oxygen in bentonite, modified by nanoparticles of aluminum and silicon oxides of similar nature.

Comparing the Physico-Chemical Characteristics of Formulated and Marketed Yashada Bhasma

2021 ◽  
pp. 6392-6398
Author(s):  
Nitu Bhatnagar ◽  
Avani Pareek
Keyword(s):  
Inductively Coupled Plasma ◽  
Thermo Gravimetric Analysis ◽  
Human Consumption ◽  
Chemical Characteristics ◽  
Gravimetric Analysis ◽  
X Ray Diffraction ◽  
X Ray ◽  
Inductively Coupled ◽  
Physico Chemical ◽  
The Difference

The present study is aimed to observe the difference in the Physico-Chemical characteristics of the marketed and formulated bhasma samples through X-Ray Diffraction analysis (XRD), Dynamic Light Scattering (DLS), Zeta potential, Thermo-Gravimetric analysis (TGA), Scanning Electron Microscopy (SEM) and Energy Dispersive X-Ray analysis (EDAX), apart from organoleptic methods. Inductively Coupled Plasma Mass Spectroscopy (ICPMS) analysis was also done to observe the presence of trace and heavy metals so that the safety of all these samples could be ensured. XRD shows variation in oxide nature of zinc as well crystallite size in all bhasma samples. DLS and SEM results show difference in particle size of marketed bhasma samples as compared to formulated Yashada bhasma. EDAX and ICPMS also confirm the alteration in elemental composition of all these bhasma samples. Thus, it can be concluded that these ayurvedic medicines should be prepared strictly using the formulation methods as mentioned in the Ayurvedic texts. This will help the prepared products to adopt the inherent quality of the ancient system of medicine, which shall be useful and devoid of any side effects for human consumption.

scholarly journals Physico-Chemical Characteristics of Shungite Rock of Kazakhstan

2013 ◽  
Vol 15 (3) ◽  
pp. 241 ◽  
Author(s):  
S.A. Efremov ◽  
S.V. Nechipurenko ◽  
M.K. Kazankapova ◽  
B. Washington ◽  
Kh.S. Tassibekov ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Physicochemical Characteristics ◽  
Chemical Characteristics ◽  
X Ray ◽  
Elementary Analysis ◽  
Physico Chemical ◽  
Developed Surface ◽  
Scanning Electron ◽  
Shungite Carbon

Physico-chemical characteristics of shugite rocks of Kazakhstan (Bakyrchik deposit) were studied using the methods of elementary analysis, IR-spectroscopy, scanning electron microscopy, Raman spectroscopy and X-ray phase analysis. The content of carbon in shungite rock was determined to be from 3% to 19%. The flotation technology for shungite rocks of Kazakhstan was developed, the content of carbon in the concentrate reaching 40.0%. When studying the elemental composition, the mineral part of shungite rocks was stated to be presented, mainly, by silicon, aluminium, calcium, magnesium, potassium, sodium, iron and titanium oxides. IR-spectroscopic investigations showed that in the concentrate, apart from polycyclic hydrocarbons containing methylene groups, there appeared carboxyl groups. The results of scanning electron microscopy (SEM) showed that flotation and thermal activation of shungite rocks on carbon allow obtaining a more developed surface structure and porosity. The structure of shungite carbon was shown by the method of Raman scattering to be close to that of glassy carbon. The results of X-ray diffraction analysis (XRD) of natural shungite rocks showed that the samples under study contained a carbonaceous substance and a number of mineral components: quartz, illite, bassanite, burgerite, muscovite. It is shown that shungite carbon of “Bakyrchik” deposit is identical to shungite of Zazhogino deposit in Russia. The stated physicochemical characteristics allow to determine the directions of the use of carbon concentrate for solution of ecological and technological problems.

Ferrochrome slag aggregate: physical-chemical characteristics and potential use in lightly cemented road bases

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Chewe Kambole ◽  
Phil Paige-Green ◽  
Williams Kehinde Kupolati ◽  
Julius Musyoka Ndambuki
Keyword(s):  
Mechanical Characteristics ◽  
National Standards ◽  
Chemical Characteristics ◽  
Test Procedures ◽  
Content Type ◽  
X Ray ◽  
Physical Chemical ◽  
Ferrochrome Slag ◽  
Ferrochrome Slag Aggregate ◽  
Road Bases

Purpose Most developing countries simply dump ferrochrome slag as waste which occupies huge areas of useful land. The purpose of this study is to underscore the significance of reusing ferrochrome slag as a sustainable and eco-friendly road aggregate material, with the added benefits of preventing possible environmental pollution and promoting sustainable mining of non-renewable construction materials. Design/methodology/approach Physical-mechanical characteristics were investigated using various South African National Standards test procedures. Chemical and mineralogical characteristics were evaluated using the X-ray fluorescence and the X-ray diffraction techniques, respectively. The toxicity characteristic leaching procedure test was used to evaluate the slag’s environmental suitability. Using two cement types, cement proportions of 1%, 2% and 3% of the slag aggregate weight mixed with optimum moisture content of the non-treated compacted slag were used to make lightly cemented ferrochrome slag aggregate (LCFSA) composites, subsequently tested for compressive strength. Findings Ferrochrome slag aggregates have excellent physical-mechanical characteristics that conform to international specifications for use in road base construction. The slag can be classified as non-hazardous solid waste. However, in acidic environments, some toxic elements may leach from the slag and pollute the environment. Optimum cement contents of 2.3% (CEM II) and 2.6% (CEM VB) can be mixed with the slag to produce LCFSA for road bases. Originality/value No research was found in literature on the use of LCFSA in road bases. This research, therefore, presents new data on mix design and strength properties of LCFSA as well as some physical-chemical characteristics of coarse ferrochrome slag aggregate.

scholarly journals Selected Water Physico-Chemical Characteristics of Iloilo Batiano River, Philippines: A Baseline Study

2021 ◽  
Vol 12 (9) ◽  
pp. 261-266
Author(s):  
Bartimeues Nathan Wiederhold ◽  
◽  
Tom Lichtenberg ◽  
Roderick R. Germo ◽  
Brian Gil S. Sarinas
Keyword(s):  
Aquatic Organisms ◽  
Calcium Content ◽  
The Philippines ◽  
Initial Assessment ◽  
Chemical Characteristics ◽  
Ph Values ◽  
Physico Chemical ◽  
High Calcium ◽  
Significant Difference ◽  
The Republic

Protecting our natural resources is one of the important thrusts of every organization. In this study, the waters of Iloilo Batiano River, Philippines is explored. This study was conducted because there is a dearth of information on the water physico-chemical characteristics of the river. Since this is an initial assessment, this study will serve as a baseline data and the results will serve as a basis for future reference for conservation measures of the river. The present study aimed to determine the selected water physico-chemical characteristics of the river such as the electrical conductivity (EC), temperature, pH, and calcium content; assess if these parameters exceed the limit set by the DENR Administrative Order No. 20F16-08 of the Republic of the Philippines and other available literatures; and to determine if there was no significant difference in the water physico-chemical characteristics among the six sampling stations. Results revealed that EC and calcium content of the river exceed their limits except for temperature and pH levels. Furthermore, EC and temperature were statistically different among the six sampling stations except for pH values. This study concludes that the river is saline due to the mixing of saltwater and surface water as the river is near to the sea and has high calcium content that can threaten the life of freshwater aquatic organisms.

scholarly journals Physico-chemical characteristics of textile effluent collected from Erode, Pallipalayam and Bhavani polluted regions, Tamilnadu, India

2017 ◽  
Vol 9 ◽  
Author(s):  
Ganesan Sathiyaraj ◽  
K. Chellappan Ravindran ◽  
Zakir Hussain Malik
Keyword(s):  
Environmental Protection Agency ◽  
Textile Industry ◽  
Skin Irritation ◽  
Textile Effluent ◽  
Chemical Characteristics ◽  
Textile Dye ◽  
Protection Agency ◽  
Huge Amount ◽  
Physico Chemical ◽  
Calcium Magnesium

<p>Present study perceives that textile dye effluents of Erode, Pallipalayam and Bhavani region have substantial volume of EC, pH, TDS, COD, BOD, Sodium Chloride, Calcium, Magnesium, Potassium and heavy metals. Results point out that irrespective of the source, effluent properties exceeded permissible limits by WHO/ FAO/Federal Environmental Protection Agency for irrigation. The textile industry consumes a mixture of chemicals and huge amount of water during the production process. About 200 L of water are used to produce 1 kg of textile. The textile effluent can cause several health infections like haemorrhage, ulceration of skin, nausea, skin irritation and dermatitis. <br /><br /></p>

scholarly journals Quality Assessment of Groundwater in the Vicinity of Coir Retting Areas of Kadinamkulam Estuary, South India

2020 ◽  
pp. 118-128
Author(s):  
Sonu Sasidharan ◽  
D. S. Jaya
Keyword(s):  
Hydrogen Sulfide ◽  
Water Samples ◽  
Anthropogenic Activities ◽  
Principal Component ◽  
Chemical Characteristics ◽  
Residential Areas ◽  
Physico Chemical ◽  
Sulfide Content ◽  
Calcium Magnesium ◽  
Hydrogen Sulfide Content

The present study was conducted in the selected groundwater bodies of the coastal gramapanchayath near Kadinamkulam estuary during the pre-monsoon, monsoon, and post-monsoon seasons. Kadinamkulam estuary is one of the major coir-retting areas in Kerala. The major objective of the study is to assess the physico- chemical characteristics and hydrogen sulfide pollution of groundwater in the residential areas of Azhoor Gramapanchayath in Thiruvananthapuram district. Surface water samples from selected stations were also collected from the Kadinamkulam estuary. The physico-chemical characteristics of water were analyzed following the standard procedures in APHA (2012). The results show that the recorded values for color, pH, phosphate, calcium, magnesium and hydrogen sulfide were above the permissible limits of drinking water quality standards (Bureau of Indian Standards, 1991; WHO, 1993, 1996). This may be due leaching of effluents from the coir retting activity in the Kadinamkulam estuary and due to the disposal of solid wastes. The study also revealed that the hydrogen sulfide content was high in lake water samples which affect the primary productivity of the water body. The correlation and principal component analysis shows that color is an important parameter and from cluster, analysis it was found that phosphate and hydrogen sulfide content significantly affect the groundwater quality. The study concludes that the groundwater sources in the study area are getting contaminated due to the leaching of pollutants from Kadinamkulam estuary and anthropogenic activities in the nearby residential areas.

scholarly journals Synthesis and physico-chemical studies of a novel noncentrosymmetric heptacoordinated cadmium(II) compound containing a tripodal amine, CdCl2[N(C2H6N)3]2

2014 ◽  
Vol 10 (10) ◽  
pp. 3225-3235
Author(s):  
M. Ben Nasr ◽  
K. Kaabi ◽  
P. S. Pereira Silva ◽  
F. Lefebvre ◽  
C. Ben Nasr
Keyword(s):  
Dft Calculations ◽  
Solid State Nmr ◽  
X Ray Diffraction ◽  
Absorption Bands ◽  
X Ray ◽  
Counter Ions ◽  
Physico Chemical ◽  
Chemical Studies ◽  
Cp Mas Nmr ◽  
13C Cp Mas Nmr

A new noncentrosymmetric Cd(II) complex with thetripodal amine tris(2-aminoethyl)amine, CdCl2[N(C2H6N)3]2, has been prepared and characterized by single crystal X-ray diffraction, solid state NMR and IR spectroscopies. In the complex, the Cd(II) ion is surrounded by sevennitrogen atoms. The organic molecule acts as both a tri-and a tetradentate ligand. The cationic complexes are linked to each other forming layers parallel to the (a, b)plan. The Cl- counter ions occupy the cavities created inside these layers. The 13C CP-MAS NMR spectra are in agreement with the X-ray structure. DFT calculations allow the attribution of the carbon peaks to the differentatoms.The vibrational absorption bands were identified by infrared spectroscopy and DFT calculations allowed their attributions.

scholarly journals Physico-Chemical Analysis of SriChamSugar’s Mill Effluent Water of Bharathi Nagara (Karnataka)

2020 ◽  
Vol 7 (3) ◽  
pp. 15-19
Author(s):  
P Nagendra ◽  
S Madan Kumar ◽  
B S Ravi
Keyword(s):  
Waste Water ◽  
Electrical Conductivity ◽  
Chemical Characteristics ◽  
Food Crops ◽  
Sugar Mill ◽  
Effluent Water ◽  
Oil And Grease ◽  
Sodium Potassium ◽  
Physico Chemical ◽  
Calcium Magnesium

Sugar industries have an essential place in Indian economic development. However, the waste water generated from these industries poses a significant threat to the environment as well as irrigated land. If untreated effluents are used in irrigation, they might contaminate food crops and, if they are released into water bodies, they might also be dangerous to the survival of the aquatic ecosystem. The Physico-chemical characteristics of the content in the effluents from Sri Cham Sugars Private Limited, Bharathi nagara Sugar mill have been explored. Physico-chemical characteristics included color, odor, temperature, pH, BOD, COD, TDS, TS, DO, Chloride, Sulphate, Nitrate, Calcium, Magnesium, Sodium, Potassium, oil and grease, Electrical conductivity of the effluent collected from the different sites at discharge point in different months have been determined.

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