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They are called "closed" because products have a circular life cycle, beginning as raw materials and either being recycled into replacement products, returning to the original raw materials, or being returned to the environment as biodegradable waste. [2] This reduces the amount of (non-biodegradable) waste disposed, as recyclables are ...
There is also a lack of education on plastic waste in these communities that prevent the proper disposal plastic and recycling methods. The Tanjung Mekar Village in Karawang Regency is an example of a village that have used ecobricks as a way to keep their environment clean and educate the public about plastic waste and pollution.
Almost all plastic is non-biodegradable and without recycling, spreads across the environment [29] [30] where it causes plastic pollution. For example, as of 2015, approximately 8 million tonnes of waste plastic enters the oceans annually, damaging oceanic ecosystems and forming ocean garbage patches. [31]
Waste comes in many different forms and may be categorized in a variety of ways. The types listed here are not necessarily exclusive and there may be considerable overlap so that one waste entity may fall into one to many types.
Landfills waste are categorized by either being hazardous, non-hazardous or inert waste. In order for a landfill design to be considered it must abide by the following requirements: final landforms profile, site capacity, settlement, waste density, materials requirements and drainage.
Inert waste is waste which is neither chemically nor biologically reactive and will not decompose or only very slowly. Examples of this are sand, concrete , and demolition waste . This has particular relevance to landfills as inert waste typically requires lower disposal fees than biodegradable waste or hazardous waste .
Other biodegradable wastes include human waste, manure, sewage, sewage sludge and slaughterhouse waste. In the absence of oxygen, much of this waste will decay to methane by anaerobic digestion. [4] In the UK, 7.4 million tonnes of biodegradable waste was sent to landfill in 2018 having reduced from 7.8 million tonnes in 2017. [5]
This page was last edited on 26 February 2015, at 12:58 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.