Study on characteristic identification of solid wastes of recycled PVC plastic products

2021 ◽  
Author(s):  
Chuan Luo ◽  
Xiatian Wang ◽  
Yangfeng Yu ◽  
Fen Sha ◽  
Chao Zhang ◽  
...  
Keyword(s):  
Solid Wastes ◽  
Plastic Products

Manufacturing and Evaluation of Woodfibre-Waste Plastic Composite Sheets

2003 ◽  
Vol 11 (6) ◽  
pp. 433-440 ◽  
Author(s):  
Debes Bhattacharyya ◽  
Krishnan Jayaraman
Keyword(s):  
Renewable Resources ◽  
Tensile Modulus ◽  
Polymeric Materials ◽  
Solid Wastes ◽  
Waste Plastics ◽  
Waste Plastic ◽  
Plastic Composite ◽  
Single Use ◽  
Complex Parts ◽  
Plastic Products

Plastic products used for packaging are often discarded after a single use resulting in an inexhaustible supply of waste polymeric materials. The stiffness and strength of polymeric materials have been known to improve with the addition of lignocellulosic fibres available in abundance in nature. Hence, composite materials containing natural fibres and waste plastics would result in the reduction of solid wastes and the use of cheap, renewable resources. Composite sheets have been manufactured from Pinus Radiata woodfibre mats produced by a novel mat forming technique and Kerbside waste plastics. The tensile modulus and strength of these composite sheets have been shown to improve with the amount of woodfibres. The formability of these sheets has been assessed through dome forming. The presence of woodfibres reduces the localised thinning while thermoforming, which is a significant advantage since excessively thin areas may cause component weakness and as a result, defective parts. Complex parts have been thermoformed successfully from these composite sheets confirming the enormous potential for their use in industry.

Sustainability of Biodegradable Polymers for the Environment

2021 ◽  
pp. 65-87
Author(s):  
Pinki Saini ◽  
Anchal Singh ◽  
Mazia Ahmed ◽  
Unaiza Iqbal ◽  
Urvashi Srivastava
Keyword(s):  
Climate Change ◽  
Carbon Dioxide ◽  
Global Warming ◽  
Green Chemistry ◽  
Environmentally Friendly ◽  
Industrial Effluents ◽  
Solid Wastes ◽  
Plastic Pollution ◽  
The World ◽  
Plastic Products

With the ever-increasing population, there is exploitation of our environment to meet the growing needs of the inhabitants. Along with pollution, climate change, global warming, etc., one of the major problems associated with overpopulation is the generation of a large amount of non-biodegradable solid wastes along with various other industrial effluents. Plastic, being inexpensive and durable, have found their way to be produced in large amounts for almost every purpose. This results in the accumulation of plastic products around the world causing plastic pollution. During the past few centuries, the idea of “green chemistry” has gained maximum attention, and therefore, efforts have been made by the researchers to reduce pollution with the help of some environmentally friendly solution. In this concern, bioplastics and biofilms have gained remarkable attention over the last two decades. The major advantages of bioplastics are their biodegradability and the reduced emission of carbon dioxide in their synthesis.

Using Solid Wastes of Tikrit City to Produce Electric Energy

2015 ◽  
Vol 1 (1) ◽  
pp. 39-48
Author(s):  
Muzher Mahdi Ibrahem ◽  
Khalid Ahmed Salih
Keyword(s):  
Electric Energy ◽  
Solid Wastes

Characteristics of Domestic Solid Wastes In The Judiciary of TuzKhurmatu, Iraq

2017 ◽  
Author(s):  
Shno Mustafa Ali ◽  
Younis Mustafa Ali ◽  
Mariwan Ridha Faris
Keyword(s):  
Solid Wastes

CLEAN UTILIZATION OF MUNICIPAL SOLID WASTES AND ALTERNATIVE FUELS DERIVED FROM IT

2020 ◽  
Vol 5 (4) ◽  
pp. 202-209
Author(s):  
Alexander Topal ◽  
◽  
Iryna Holenko ◽  
Luidmyla Haponych ◽  
◽  
...  
Keyword(s):  
Thermal Treatment ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Alternative Fuels ◽  
Solid Wastes ◽  
Municipal Solid Wastes ◽  
Local Conditions ◽  
Ecological Requirements ◽  
Clean Technologies

For the municipal solid waste (MSW) to be used in a proper way, it is necessary to implement clean technologies capable of thermal treatment of MSW and RDF in order to produce heat and electricity while meeting current ecological requirements. Nowadays, a number of technologies for MSW/RDF thermal treating are being used worldwide. Among them, the most proven technologies, applicable for industrial introduction, have been considered while analyzing their advantages/ disadvantages accounting for local conditions of Ukraine.

New Systems for the Digestion of Solid Wastes

1992 ◽  
Vol 25 (7) ◽  
pp. 319-326 ◽  
Author(s):  
A. Wellinger ◽  
U. Baserga ◽  
K. Egger
Keyword(s):  
Dry Matter ◽  
Gas Production ◽  
Matter Content ◽  
Solid Wastes ◽  
Dry Matter Content ◽  
Feeding System ◽  
Shear Forces ◽  
Tank Reactor ◽  
Strong Shear ◽  
First Results

Two new systems for the digestion of solid wastes at thermophilic temperatures were developped and are currently being investigated at our research institute. The first system (ANCOM) was designed to process straw-rich cattle manure with a natural dry matter content of 18% to 22%. First results demonstrated a good specific gas production of 1.2 m3 biogas per m3 digester volume and day (54% methane) corresponding to a gas yield of 400 l per kg VS. A second digester system was developed to treat fruit, garden and vegetable (FGV-) waste. Because FGV-waste tends to float, a stirred tank reactor was designed in cooperation with an engineering firm. The reactor includes a distinguished new stirring system taking up strong shear forces and a hydraulic feeding system which guarantees that even during recirculation of the material, the hygenized digested substrate leaving the digester is not brought in contact with the fresh incoming material. First results measured at an HRT of 40 days demonstrated a specific gas production of 2.7 m3 per m3 fermenter and day.

Conditioning of oily sludges with municipal solid wastes incinerator fly ash

1997 ◽  
Vol 35 (8) ◽  
pp. 231-238 ◽  
Author(s):  
Tay Joo Hwa ◽  
S. Jeyaseelan
Keyword(s):  
Heavy Metals ◽  
Fly Ash ◽  
Specific Resistance ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Solid Wastes ◽  
Municipal Solid Wastes ◽  
Capillary Suction ◽  
Optimum Dosage

Conditioning of sludges improves dewatering characteristics and reduces the quantity of sludge to be handled. Anaerobic digested sludge collected from a sewage treatment plant contained 1.8% to 8% oil. The increase of specific resistance and capillary suction time (CST) with increasing oil content observed in these samples indicates the interference of oil in dewatering. It has been found that addition of municipal solid wastes incinerator fly ash decreases the specific resistances and capillary suction times of oily sludges rapidly up to 3% dosage. Beyond 3% fly ash, the decrease is less significant and the solids content in the sludge cake increases. This optimum dosage remains the same for sludges with varying oil contents from 1.8% to 12%. The total suspended solids of filtrate decreases with fly ash dosage but the toxic concentrations of heavy metals increases considerably. However at the optimum dosage of 3%, concentrations of heavy metals are within the limits for discharging into the sewers. The correlations of CST with the dewatering characteristics such as specific resistance, filter yield and corrected filter yield are established. These correlations can be used to obtain a quick prediction on dewaterability.

Toxic effects of sub lethal concentration of dioctyl phthalate on the histology of liver of Clarias batrachus (Linn.).

2016 ◽  
Vol 5 (09) ◽  
pp. 4874
Author(s):  
Manisha Satpathi* ◽  
Ravinder Singh
Keyword(s):  
Acute Toxicity ◽  
Light Microscopy ◽  
Dioctyl Phthalate ◽  
Clarias Batrachus ◽  
Fresh Water Fish ◽  
Histopathological Changes ◽  
Histological Changes ◽  
Water Fish ◽  
Toxicity Effects ◽  
Plastic Products

Dioctyl phthalate (DOP) commonly used as plasticizer enters into aquatic environment from the industries manufacturing plastic products, PVC resins, cosmetics and many other commercial products. Therefore, this study was designed to evaluate the acute toxicity effects of Dioctyl phthalate on fresh water fish Clarias batrachus. The 96 hour LC50 of Dioctyl phthalate in Clarias batrachus was estimated as 14.5ml/L. Histopathological changes in liver of Clarias batrachus were determined by exposing them to a fraction of LC50(1/5th) dose with every change of water for 30 days.The liver of Clarias batrachus was excised at every interval of 30 days and histological changes of liver were studied under light microscopy. Liver tissues showed abnormalities. Centrilobular vacuolation, necrosis, eccentric nuclei and enlarged nuclei, Centrilobular degeneration of hepatocytes were observed in liver tissue of fish.

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