Sustainable Phosphorus Recycling: A review of advanced recovery methods with a focus on hydrothermal humification technology and potential phosphorus resources in China for this method

IF 5 3区农林科学 Q1 SOIL SCIENCE Soil Use and Management Pub Date : 2023-12-07 DOI:10.1111/sum.13001

Chunyu Tang, Shuang Gai, Zhuqing Liu, Long Sui, Kui Cheng, Fan Yang

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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), feces (0.5 Tg/year), as well as outbreaking algae (0.48 Tg/yr). 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 rocks sources and environment pollution.

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可持续磷回收：回顾先进的回收方法，重点是水热腐化技术和中国用于该方法的潜在磷资源

磷（P）资源管理正面临着由人类活动引发的双重挑战：土壤中生物可利用磷的稀缺和废物流中大量未开发磷资源的弃置。在中国，大量的磷资源仍未被开发利用，其中包括农作物秸秆（0.9 吨/年）、猪粪（1.1 吨/年）、淤泥（0.2 吨/年）、粪便（0.5 吨/年）以及破壁藻类（0.48 吨/年）。传统的磷回收技术，包括沉淀、酸化和热化学技术（PAT）以及增强型生物除磷技术（EBPR），在从这些生物质废物流中回收磷方面显示出局限性。水热腐化技术（HTH）是一种前景广阔的新技术，能够将典型的废物流转化为磷肥，促进绿色可持续发展。我们估计，水热腐殖化技术有可能从秸秆、大型藻类废物和污泥中提取的可用磷总量为 0.46 吨/年。因此，持续发展 HTH，实现生物质中废弃磷的循环利用，将有效改善中国的磷循环，缓解磷矿石来源匮乏和环境污染问题。

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来源期刊

Soil Use and Management 农林科学-土壤科学

CiteScore

7.70

自引率

13.20%

发文量

审稿时长

3 months

期刊介绍： Soil Use and Management publishes in soil science, earth and environmental science, agricultural science, and engineering fields. The submitted papers should consider the underlying mechanisms governing the natural and anthropogenic processes which affect soil systems, and should inform policy makers and/or practitioners on the sustainable use and management of soil resources. Interdisciplinary studies, e.g. linking soil with climate change, biodiversity, global health, and the UN’s sustainable development goals, with strong novelty, wide implications, and unexpected outcomes are welcomed.