scholarly journals A global modification in avifaunal behavior by use of waste disposal sites (waste dumps/rubbish dumps): A review paper

2021 ◽  
Vol 10 (3) ◽  
Author(s):  
Zunaira Noreen
Keyword(s):  
Waste Disposal ◽  
Review Paper ◽  
Waste Dumps ◽  
Rubbish Dumps

scholarly journals Evaluation of Water Chemistry in the Environs of Municipal Solid Waste Disposal Site, Jawaharnagar, Hyderabad, Telangana, India.

2021 ◽  
Author(s):  
A G S Reddy ◽  
P N Rao ◽  
G Ravi Kumar ◽  
G Raja Babu ◽  
K Maruti Prasad
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Waste Disposal ◽  
Chemical Constituents ◽  
Solid Waste Disposal ◽  
Dumping Site ◽  
Waste Dumps ◽  
Groundwater Samples ◽  
The Impact ◽  
Surface And Groundwater

Abstract The impact of uncontrolled municipal solid waste disposal of 3800 tons per day on surface and groundwater in the downstream of Jawaharnagar dumping site was studied. The un-engineered solid waste dumping yard site spreading over an area of about 300 ha is located on topographic high (hillock), and falls in Madyala stream and Dammaiguda watersheds of Musi sub-basin. The area is underlain by granites of the Archaean age. Both surface and groundwater samples, collected covering hydrological cycles of 2011and 2012, were analyzed for major chemical constituents. During 2012, 15 samples of both seasons were tested for BOD, COD, and TOC. The mean values of some tested chemical constituents of surface water samples (15) were - EC 13066 m S/cm, TH 753, Na+ 813, K+ 530, HCO3− 978, Cl− 1304, and NO3− 262 (all in mg/l) which prove that the tanks and stream near dump yard were pools of leachate. The average values of contaminated groundwater samples among the four sampled sessions (17) indicate EC was above 5000 m S/cm, TH 1624, Cl− 1502, and SO42− 284 (all in mg/l) which were found much above the threshold values. Very few samples were found suitable for drinking purpose and most of the samples fall in Good class of WQI. Very high content of TOC, BOD, and COD in both surface and groundwater samples indicate the presence of organic pollutants sourced from domestic waste dumps. Wide temporal and spatial variability in the concentration of many ion species can be attributed to deviation in rainfall, topography, plume dynamics, and aquifer hydraulics. Low resistivity values (5 to 25 ohm.m) at a distance of 4 km from the dumping site and high infiltration rate (29 cm/hr) at Madyala stream, which were contaminant hotspots, indicate the mass flux was controlled by hydrological features. Scattered and limited distribution of contaminants can be accounted for heterogeneous nature of country rocks, retarded lateral and vertical flow of water which restricts the movement of contaminants to certain preferred pathways. The study supports the hypothesis of solid waste dumps were the epicenter of pollution which generates leachate and dissipate contaminants to the aquatic environment influenced by factors like soils, topography, and aquifer hydraulics and contaminant kinetics.

scholarly journals Determining the ability to receive rock of waste dumps when exploiting a group of open-pit coal mines

2020 ◽  
Vol 61 (5) ◽  
pp. 71-79
Author(s):  
Hoan Ngoc Do ◽  
Fomin Sergey Igorevic ◽  
Keyword(s):  
Waste Disposal ◽  
Coal Mines ◽  
Open Pit ◽  
Environmental Restoration ◽  
Open Pit Mines ◽  
Waste Dumps ◽  
Geological Conditions ◽  
Restoration Work ◽  
Transportation Flows ◽  
To Receive

In the process of developing the general exploitation and disposal plan for the Deonai, CocSau and Caoson coal mines, use should be taken into account the maximum internal disposal sites to reduce the transport supply and facilitate the environmental restoration work after exploitation. However, in the geological conditions of these coal mines, in order to ensure the space to exploit and make full use of useful minerals, it is necessary to calculate the economic efficiency when building the exploitation and disposal plan. The content of the article is based on the criteria of optimum transportation flows of rock in the arrangement of waste disposal when exploiting a group of three open-pit mines Deo Nai, Coc Sau and Cao Son.

scholarly journals Experimental Study of Municipal Solid Waste (MSW) Landfills and Nonauthorized Waste Damps Impact on the Environment

2017 ◽  
pp. 646-654
Author(s):  
Veronica Tarbaeva ◽  
Dmitry Delarov
Keyword(s):  
Greenhouse Gas ◽  
Waste Disposal ◽  
Negative Influence ◽  
Leningrad Region ◽  
Visual Evaluation ◽  
Gas Emissions ◽  
Ground Water Pollution ◽  
Waste Dumps ◽  
Residential Settlement ◽  
The Town

A purpose was an analysis of waste disposal sites existing in the Leningrad region and a choice of facilities potentially suitable for the removal and utilization of greenhouse- and other gases. In order to achieve the purpose in view, data were collected on the arrangement of non-authorized landfills and waste dumps within the Leningrad region. The preliminary visual evaluation and instrumental monitoring were carried out for 10 facilities. The evaluation of greenhouse- and other gas emissions into the atmosphere as well as of ground water pollution near places of waste disposal was performed. A databank was created for waste disposal sites where it could be possible to organize the work on removing and utilizing of greenhouse gas. The conducted examination stated that landfills exert negative influence on the environment in the form of emissions into the atmosphere and impurities penetrating underground and surface water. A volume of greenhouse gas emissions calculated in units of СО2 – equivalent from different projects fluctuates from 63.8 to 8091.4 t in units of СО2 – equivalent. Maximum summarized emissions of greenhouse gases in units of СО2 – equivalent were stated for MSW landfills of the towns of Kirishi, Novaya Ladoga and Slantsy, as well as for MSW landfills near Lepsari residential settlement and the town of Vyborg.

scholarly journals Shredder machine for plastic recycling: A review paper

2022 ◽  
Vol 1217 (1) ◽  
pp. 012007
Author(s):  
J H Wong ◽  
M J H Gan ◽  
B L Chua ◽  
M Gakim ◽  
N J Siambun
Keyword(s):  
Waste Disposal ◽  
Review Paper ◽  
Plastic Waste ◽  
Waste Materials ◽  
Concept Design ◽  
Plastic Pollution ◽  
Research Gaps ◽  
Plastic Recycling ◽  
Global Concern ◽  
Critical Components

Abstract Plastic pollution has become a global concern due to poor plastic waste disposal management. As an alternative, independent recycling efforts are necessary. A Plastic shredder machine is a preliminary machine used to cut plastic waste into small pieces before turning it into useful products. The concept design of the shredder machine that is currently available is fairly similar. The shaft and blades are the critical components in the shredder machine that determines its performance. The geometry and orientation of the blades that were fitted into the single or double-shafts were found to directly affect the shredding performance. Therefore, this article aims to review the various geometry and orientations of the blades that give direct effect on the shredding performance, as well as identifying the research gaps related to the shredder machine for plastic waste materials

Statistics and parallaxes

1978 ◽  
Vol 48 ◽  
pp. 7-29
Author(s):  
T. E. Lutz
Keyword(s):  
Experimental Design ◽  
Statistical Methods ◽  
Review Paper ◽  
Systematic Errors ◽  
Past Experience ◽  
Random Errors ◽  
Trigonometric Parallaxes ◽  
Systematic And Random Errors

This review paper deals with the use of statistical methods to evaluate systematic and random errors associated with trigonometric parallaxes. First, systematic errors which arise when using trigonometric parallaxes to calibrate luminosity systems are discussed. Next, determination of the external errors of parallax measurement are reviewed. Observatory corrections are discussed. Schilt’s point, that as the causes of these systematic differences between observatories are not known the computed corrections can not be applied appropriately, is emphasized. However, modern parallax work is sufficiently accurate that it is necessary to determine observatory corrections if full use is to be made of the potential precision of the data. To this end, it is suggested that a prior experimental design is required. Past experience has shown that accidental overlap of observing programs will not suffice to determine observatory corrections which are meaningful.

Potential Uses of Vinegar as a Medicine and Related in vivo Mechanisms

2016 ◽  
Vol 86 (3-4) ◽  
pp. 127-151 ◽  
Author(s):  
Zeshan Ali ◽  
Zhenbin Wang ◽  
Rai Muhammad Amir ◽  
Shoaib Younas ◽  
Asif Wali ◽  
...  
Keyword(s):  
Chemical Structure ◽  
Review Paper ◽  
Heart Diseases ◽  
Folk Medicine ◽  
Active Role ◽  
Current Review ◽  
Different Types ◽  
Positive Effect

While the use of vinegar to fi ght against infections and other crucial conditions dates back to Hippocrates, recent research has found that vinegar consumption has a positive effect on biomarkers for diabetes, cancer, and heart diseases. Different types of vinegar have been used in the world during different time periods. Vinegar is produced by a fermentation process. Foods with a high content of carbohydrates are a good source of vinegar. Review of the results of different studies performed on vinegar components reveals that the daily use of these components has a healthy impact on the physiological and chemical structure of the human body. During the era of Hippocrates, people used vinegar as a medicine to treat wounds, which means that vinegar is one of the ancient foods used as folk medicine. The purpose of the current review paper is to provide a detailed summary of the outcome of previous studies emphasizing the role of vinegar in treatment of different diseases both in acute and chronic conditions, its in vivo mechanism and the active role of different bacteria.

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