It is important for items to be biodegradable if they are likely to end up in landfill (e.g. bin bags). This is because plastic can take hundreds of years to decompose and we have very limited landfill space.
The best method of disposal is re-use or recycling so biodegradable waste such as paper and card would be better off recycled or used in your compost bin. If waste is composted instead of discarded in landfill then this will reduce emissions of the greenhouse gas methane, which is produced from a landfill site when biodegredable waste decomposes.
When detergents reach the lakes, water bodies and environment, they give a lot of harm to the animal life. This includes fish, birds and other animals which feed on lakes. The detergents increases the growth of algae, which gradually dissolves all the oxygen in the lakes which eventually leads to the extinction of many species. So, it is important for detergents to be biodegradable and environmentally friendly.
When there is too much trash in the sewage drains, some trash drain into the ocean! If the trash doesn't disintegrate,many living creatures such as whales, could get trash stuck in their blowhole, and they can't breathe. One little piece of trash could end up killing a whole generation of animals! If the trash is biodegrateable, (like paper) it won't harm the animals, it'll just safely dissolve onto the ocean.
Now detergents are biodegradable.
Detergents are not biodegradable because they have highly branched hydrocarbon chain which is not biodegradable.
Detergents that can be degraded by bacteria are called biodegradable detergents. Such detergents have straight hydrocarbon chains. For example: sodium lauryl sulphate Detergents that cannot be degraded by bacteria are called non-biodegradable detergents. Such detergents have highly-branched hydrocarbon chains. For example: sodium -4- (1, 3, 5, 7- tetra methyl octyl) benzene sulphonate
some soapless detergents are non-biodegradable
"early detergents were not biodegradable like soap, they became a public nuisance, causing sewage problems." http://www.bookrags.com/research/soaps-and-detergents-woc/
why is waste for us
Using biodegradable products, that is, materials that will break down easily in the soil, we are cutting down on pollution (from detergents and chemicals) and land fill stagnation (where landfills are full of plastics and material that will take hundreds of years to break down). == ==
Pharmeceuticals and detergents.
soapy are biodegradable and soap-less non biodegradable
It is used to make pyrex glass, fibreglass, detergents, bleaches and it is an important plant nutrient.
biodegradable
Biodegradable products are easy to dispose of and rarely ever cause harm to the environment. By manufacturing such products, we ensure that the environment does not become polluted.