磷
环境科学
肥料
生物量(生态学)
肥料
污水处理
稻草
可再生资源
污染
废物管理
环境工程
农学
可再生能源
化学
生态学
生物
有机化学
工程类
作者
Chunyu Tang,Shuang Gai,Zhuqing Liu,Long Sui,Kui Cheng,Fan Yang
摘要
Abstract The management of phosphorus (P) resources is facing dual challenges mediated by human activities: the scarcity of bioavailable P in soil and the disposal of massive undeveloped P resources in waste streams. In China, large amounts of P resources remain unexploited, including crop straw (0.9 Tg/year), pig manure (1.1 Tg/year), sludges (0.2 Tg/year), faeces (0.5 Tg/year) and outbreaking algae (0.48 Tg/year). Traditional P recovery technologies, including precipitation, acidulation and thermochemistry technology (PAT) and enhanced biological phosphorus removal technology (EBPR), have shown limitations in P recovery from these biomass waste streams. Hydrothermal humification technology (HTH) is a promising new technology, capable of converting typical waste streams into phosphate fertilizer for green and sustainable development. We estimate that the amount of available P that HTH could potentially extract from straw, macroalgae waste and sludge totals 0.46 Tg/year. Accordingly, the consistent development of HTH for the recycling of waste P in biomass will effectively improve China's P cycle and relieve the absence of phosphate rock sources and environment pollution.
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