Question

the gaseous fast Broduced by processing residual waste from Livestock ​

Answer 1

Answer:

Animal wastes have been applied as organic manure in traditional farming and remain a relative large source of recyclable phosphorus in modern agriculture. According to the latest estimate from China, beef cattle, dairy cattle, swine, and poultry produced 4.9 MMT P contained in animal manures in 2004 (Chen et al., 2008). The livestock population in China accounts for about 30% of the world total in 2004 and the proportion has remained fairly constant (FAO, 2013). On this basis, the global production of animal wastes would be 16.0 MMT P year− 1. However, the real figure may be somewhat larger, because the animals in China are not so well fed compared with developed countries. For this reason, the estimate of global production of 16–20 MMT P year− 1 in animal wastes, applying an average concentration of 0.8–1% of phosphorus for both confined and unconfined animal wastes, is probably more accurate.

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