Phosphorus and nutrient management

Phosphorus is a finite, non-renewable element that plants cannot grow without, yet most of it passes through agricultural and industrial systems only once before being lost to waterways or landfill. Researchers working at the intersection of environmental science and process engineering are developing ways to intercept phosphorus from wastewater streams—through techniques such as struvite crystallization, adsorption onto engineered materials, and biochar application—and return it to the soil as usable fertilizer. The urgency stems from a straightforward problem: accessible phosphate rock reserves are concentrated in a handful of countries and are being depleted faster than they form, raising serious concerns about long-term food production capacity. Central open questions include how to scale recovery processes cost-effectively across different wastewater compositions, and how recovered products like struvite compare agronomically and economically to conventional mined fertilizers.

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54,239

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727,292

Keywords

PhosphorusRecoveryWastewaterFertilizerStruviteAdsorption