Solid waste, Science

Assignment Help:

Solid waste

Solid waste in some cases can be a resource. A good example is the factory at Yokohama in Japan which is engaged in converting waste paper into toilet paper. In our country, the mainstreet of Patna city is being illuminated by biogas produced from nightsoil of  the city dwellers. In Delhi, the sewage treatment plant produces cooking gas. Fermentation of wastessuch as cattle dung, human excreta, garbage and aquatic weeds like algae and water hyacinth, produces biogas which can be used for a variety of purposes. Fermentation takes place at temperatures between 28° and 40°C and gases produced are predominantly methaneand carbon dioxide with a small quantity of hydrogen sulphide and nitrogen. Slag, a waste product left when the metal has been extracted from  its ore, can be powdered and added to cement for construction. Flyash  is another material used as a valuable cementing material. It is clear from the above that the solid wastes can serve as very useful resource for providing  raw material for our industries, for generating energy and for the production of manure. 


Related Discussions:- Solid waste

Discuss in brief about the red soils, Discuss in brief about the Red soils ...

Discuss in brief about the Red soils Red soils are characterised  by a rusty red colour due in most cases to the presence of various oxides of iron.  They are either formed  in

Classify suture with help of examples, Question 1 Classify suture with ...

Question 1 Classify suture with help of examples 2 Give a brief description of following syndromes Felty's syndrome Ekbom syndrome Klippel-Feil syndrome Hepatore

Oxidising substances , Oxidising Substances : It includes oxidising substa...

Oxidising Substances : It includes oxidising substances and the organic peroxides. Oxidising substances are by themselves not combustible but by feeding oxygen to other substances

Define white blood corpuscles as internal defence mechanism, Define White B...

Define White Blood Corpuscles as Internal Defence Mechanism The white blood cells are probably the most important part of our immune system. You may recall reading about the wh

Define the levels of drugs in urine, Define the Levels of Drugs in Urine ...

Define the Levels of Drugs in Urine Levels of alcohol and barbiturates (a group of drugs derived from barbituric acid that is used to sedate, to control convulsions or to induc

Astronomy, Describe the process of gas capture that helped to build the Jov...

Describe the process of gas capture that helped to build the Jovian planets?

Water-mill in golden era, Water-mill in Golden era: The water-mills wer...

Water-mill in Golden era: The water-mills were also invented in  the classical period. But they came to be widely used only in  the Middle Ages. The wind-mills and water-mills

Earth science, why does water erupt from geysers?

why does water erupt from geysers?

State the pipette method of soil, State the Pipette Method of soil The ...

State the Pipette Method of soil The   sieve analysis, though is a true particle size analysis, is  unable to separate particles smaller than 20 microns. Such particles are sep

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd