The biodegradable and compostable spunlace nonwoven is made of 100% PLA or PLA, wood pulp, viscose mixed fiber. Biodegradable Definition/Compost/Compostable Definition/PLA Definition——
The biodegradable and compostable spunlace nonwoven is made of 100% PLA or PLA, wood pulp, viscose mixed fiber. The discarded PLA spunlace nonwoven can be biodegradated under the compost condition.
Biodegradation is the disintegration of materials by bacteria, fungi, or other biological means.
The term is often used in relation to: biomedicine, waste management, ecology, and the bioremediation of the natural environment. It is now commonly associated with environmentally-friendly products, capable of decomposing back into natural elements.
Although often conflated, biodegradable is distinct in meaning from: compostable. While biodegradable simply means can be consumed by microorganisms, compostable makes the further specific demand that the object break down under composting conditions.
Organic material can be degraded aerobically (with oxygen) or anaerobically (without oxygen). Decomposition of biodegradable substances may include both biological and abiotic steps.
Biodegradable matter is generally organic material that provides a nutrient for microorganisms. These are so numerous and diverse that a huge range of compounds can be biodegraded, including hydrocarbons (oils), polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs) and pharmaceutical substances. Microorganisms secrete biosurfactant, an extracellular surfactant, to enhance this process.
Compost is organic matter that has been decomposed in a process called composting. This process recycles various organic materials - otherwise regarded as waste products - and produces a soil conditioner (the compost).
Compost is rich in nutrients. It is used for example in gardens, landscaping, horticulture, urban agriculture and organic farming. The compost itself is beneficial for the land in many ways, including as a soil conditioner, a fertilizer, addition of vital humus or humic acids, and as a natural pesticide for soil. In ecosystems, compost is useful for erosion control, land and stream reclamation, wetland construction, and as landfill cover (see compost uses).
At the simplest level, the process of composting requires making a heap of wet organic matter (also called green waste, such as leaves, grass, food scraps) and waiting for the materials to break down into humus after a period of months. However, composting also can take place as a multi-step, closely monitored process with measured inputs of water, air, and carbon- and nitrogen-rich materials. The decomposition process is aided by shredding the plant matter, adding water and ensuring proper aeration by regularly turning the mixture when open piles or "windrows" are used. Earthworms and fungi further break up the material. Bacteria requiring oxygen to function (aerobic bacteria) and fungi manage the chemical process by converting the inputs into heat, carbon dioxide, and ammonium.
Poly(lactic acid) or polylactic acid or polylactide (PLA) is a biodegradable and bioactive thermoplastic aliphatic polyesterderived from renewable resources, such as corn starch, cassava roots, chips or starch, or sugarcane. In 2010, PLA had the second highest consumption volume of any bioplastic of the world.
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