Solid Waste: Characteristics of Solid Waste and Physical Characteristics

Get top class preparation for UGC right from your home: Get detailed illustrated notes covering entire syllabus: point-by-point for high retention.

Characteristics of Waste

Physical Characteristics

  • Moisture Content
  • Density
  • Field Capacity
  • Permeability

Chemical Characteristics

  • Proximate Analysis
  • Ultimate Analysis
  • Fusing point of Ash
  • Heat Content

Physical Characteristics

  • Moisture Content- It is the weight of moisture per unit weight of wet or dry matter
  • Density- It is mass per unit volume (kg/m3)
  • Field Capacity- It is the amount of moisture that is kept retained by a solid waste against the downward pull of gravity
  • Permeability- It is the hydraulic conductivity of compacted solid waste

Chemical Characteristics

Proximate Analysis

It gives:

  • Moisture content
  • Fixed Carbon
  • Ash
  • Volatile Matter

Proximate Analysis of Municipal Solid Waste

Proximate Analysis of Municipal Solid Waste
  • Ultimate Analysis: Determines the percent C (carbon) , H (hydrogen) , O (oxygen) , N (nitrogen) , S (sulphur) , and ash in the waste.
  • Fusing point of ash- Temperature at which clinkers are formed by fusion and agglomeration from the resulting ash.
  • Clinkers are formed at a temperature of 1100 - 1200°C.
  • Heat Content: Amount of heat generated from combustion of a unit weight of a substance. It is given by kcal/kg.

Multiple Choice Questions

1. . The amount of moisture that is kept retained by a solid waste against the downward pull of gravity is known as

  1. Moisture content
  2. Field Capacity
  3. Permeability
  4. Porosity

Answer: b

2. C, H, N and S is determined by

  1. Proximate analysis
  2. Ultimate analysis
  3. Fusing point
  4. None of the above

Answer: b

3. which among the following is determined by heating 1 gm of sample at a temperature of 950°C for 7 minutes in the absence of air

  1. Volatile matter
  2. Moisture content
  3. Ash
  4. Fixed carbon

Answer: a

4. Clinkers are formed at a temperature of

  1. 500 - 600°C
  2. 600 - 1000°C
  3. 1000 - 1100°C
  4. 1100 - 1200°C

Answer: d

#Characteristics of Solid Waste

#UGC NTA NET

#Physical characteristics

#chemical characteristics

#proximate analysis

#Ultimate analysis

Developed by: