Biowaste

Question 1

Composting

Answer 1

Break down of organic matter

Question 2

Home composting

Answer 2

Debris placed in heaps or bins and turned used on home gardens

Question 3

Centralized Composting

Answer 3

Large scale

Question 4

Windrow

Answer 4

Waste is laid in a long parallel rows and turned to aerate. Usuallly done out doors and needs large amount

Question 5

static pile

Answer 5

Same as windrow but only turned occasionally but has perforated floors with fans to aerate

Question 6

tunnel composting

Answer 6

Closed tunnel with a fan

Question 7

Rotary drum

Answer 7

Sewage and sludge work with fibrous materials keeps the waste constantly aerated

Question 8

In vessel

Answer 8

placed in containers then enclosed controlling the environment

Question 9

Advantages of composting

Answer 9

Decreasing the burden on land fills also alternative to land fills

Question 10

Disadvantages

Answer 10

some expensive and time consuming. some require large amounts of land, some huge power consumers

Question 11

Recycling

Answer 11

Turning used materials to new products

Question 12

4R’s

Answer 12

Reduce, Reuse, Recycle, Recover

Question 13

Reduce

Answer 13

Reducing what we use in the first place

Question 14

Reuse

Answer 14

Refers to the repeated use of an item,

Question 15

Recycle

Answer 15

Recycleables are manufactured to new products

Question 16

Environmental problem of recycling

Answer 16

High amounts of hydro, Trucks for transportation Buts less then compared to manufactureing products from raw

Question 17

Advantages of recycling

Answer 17

Slows consumption of natural resources
works towards elimination of non biodegradable waste
reduces landfill waste
Environmentally awareness

Question 18

Disadvantages

Answer 18

Facilities cause pollution and high energy use
Not cost-efficient( subsidize)
Percentage end up trashed due to poor quality

Question 19

Anaerobic Digestion

Answer 19

Contained, closed digestion of wastes such as manure and food ect.. though microbial activity in the absence of oxygen

Question 20

Completely mixed digestion

Answer 20

low dry content (manure) mixing already digested material with new materials

Question 21

Plug and flow

Answer 21

used for dry materials and involve passing materials through a long narrow channel

Question 22

Thermophylic

Answer 22

50-60 large amount of bio gas and short digestion period

Question 23

Mesophylic

Answer 23

35-40 takes 30-40 days

Question 24

psychrophylic

Answer 24

Operates at a lower temp 15-25 but much longer

Question 25

Enviromental problems with anaerobic digestion

Answer 25

none…..`

Question 26

Advantages

Answer 26

Reduction in pathogens and odour and reduction in gig while renewable energy and fertilizer with high nutrient availability

Question 27

Disadvantages

Answer 27

High cost to implement Maintaining is complicated location as well

Question 28

Biomass Gasification

Answer 28

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