Solid Waste: Characteristics of Solid Waste and Physical Characteristics

Get unlimited access to the best preparation resource for UGC : Get detailed illustrated notes covering entire syllabus: point-by-point for high retention.

Download PDF of This Page (Size: 137K)

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

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: