The Phosphorus Cycle

Emsley, John

doi:10.1007/978-3-540-38516-5_7

Cited by 8 publications

(7 citation statements)

References 32 publications

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“…Consequently, the amount of phosphorus transported by freshwaters into the ocean is probably in the range of 12 to 21 MMT P/yr. This result agrees with the most likely value of 17 to 22 MMT P/yr given by some previous estimates (Emsley 1980; Meybeck 1982; Richey 1983; Sposito 1989; Howarth et al 1995). The riverborne transport of phosphorus constitutes the main flux of the global phosphorus cycle.…”

Section: The Human‐intensified Phosphorus Cyclessupporting

confidence: 93%

“…The amount of phosphorus in the world's soils is roughly 90 × 10 3 to 200 × 10 3 MMT P, according to various estimates (Emsley 1980; Meybeck 1982; Richey 1983; Filippelli 2002). Although the total phosphorus content of soils is large, only a small fraction is available to biota in most soils.…”

Section: The Human‐intensified Phosphorus Cyclesmentioning

confidence: 99%

“…Although the total phosphorus content of soils is large, only a small fraction is available to biota in most soils. This constitutes an available phosphorus pool containing 1,805 to 3,000 MMT P (Grove 1992), most likely 2,000 to 2,600 MMT P (Emsley 1980; Richey 1983). A larger amount, in the range of 27 × 10 6 to 840 × 10 6 MMT P, can be found in the oceans.…”

Section: The Human‐intensified Phosphorus Cyclesmentioning

confidence: 99%

“…A larger amount, in the range of 27 × 10 6 to 840 × 10 6 MMT P, can be found in the oceans. The sea water contains 80 × 10 3 to 120 × 10 3 MMT P, and the rest is accumulated in sediments (Emsley 1980; Richey 1983; Grove 1992; Filippelli 2002; Smil 2002).…”

Section: The Human‐intensified Phosphorus Cyclesmentioning

confidence: 99%

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Global Phosphorus Flows and Environmental Impacts from a Consumption Perspective

Liu

Villalba

Ayres

et al. 2008

J of Industrial Ecology

302

184

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Summary Human activities have significantly intensified natural phosphorus cycles, which has resulted in some serious environmental problems that modern societies face today. This article attempts to quantify the global phosphorus flows associated with present day mining, farming, animal feeding, and household consumption. Various physical characteristics of the related phosphorus fluxes as well as their environmental impacts in different economies, including the United States, European countries, and China, are examined. Particular attention is given to the global phosphorus budget in cropland and the movement and transformation of phosphorus in soil, because these phosphorus flows, in association with the farming sector, constitute major fluxes that dominate the anthropogenic phosphorus cycle. The results show that the global input of phosphorus to cropland, in both inorganic and organic forms from various sources, cannot compensate for the removal in harvests and in the losses by erosion and runoff. A net loss of phosphorus from the world's cropland is estimated at about 10.5 million metric tons (MMT) phosphorus each year, nearly one half of the phosphorus extracted yearly.

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Section: The Human‐intensified Phosphorus Cyclessupporting

confidence: 93%

Section: The Human‐intensified Phosphorus Cyclesmentioning

confidence: 99%

Section: The Human‐intensified Phosphorus Cyclesmentioning

confidence: 99%

Section: The Human‐intensified Phosphorus Cyclesmentioning

confidence: 99%

See 2 more Smart Citations

Global Phosphorus Flows and Environmental Impacts from a Consumption Perspective

Liu

Villalba

Ayres

et al. 2008

J of Industrial Ecology

302

184

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“…Phosphorus is also a nonrenewable resource and its deficiency is detrimental to growth in higher plants, which necessitates artificial phosphate fertilization to meet the insatiable need for agricultural productivity with expanding population. However, phosphate processing from natural phosphorus‐bearing materials for accessibility to plants is not sustainable with the consumption rate, its energy intensive and therefore a challenging threat to the agricultural industry . As a principal deposition medium of excess phosphate originating from the municipal water and urban wastewater treatment processes to prevent eutrophication in lakes, sewage sludge is an attractive potential secondary source of phosphorous .…”

Section: Introductionmentioning

confidence: 99%

Tetraamminezinc complex integrated interpenetrating polymer network nanocomposite membrane for phosphorous recovery

Liu

Zhang

et al. 2018

AIChE Journal

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Phosphorous recovery from wastewater by nanofiltration (NF) is a feasible and sustainable approach, but challenges still exist in the development of highly efficient membranes for the selective permeation of phosphorus. Herein an interpenetrating network (IPN) of crosslinked polyvinyl alcohol (PVA) is integrated with Zn2+ moieties through coordination with the amino groups of crosslinked polyethyleneimine (PEI) and deposited on borate crosslinked polydopamine‐grafted carbon nanotubes (B‐PDA‐CNT) intermediate layer incorporated into the microfiltration substrate to form the composite membrane. The positively charged membrane in acidic conditions affords good rejection (>85%) of heavy metals ions including Cd2+, Cu2+, Zn2+, Pb2+, and Ni2+. Meanwhile, a low phosphorus rejection of <15% is realized with the application of a relatively low transmembrane pressure. This presupposes that the developed approach achieves selective removal of heavy metals from a phosphate solution and is attractive for low pressure recovery of phosphorus. © 2018 American Institute of Chemical Engineers AIChE J, 65: 755–765, 2019

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The formation and transformation of phosphorus–carbon bonds in living organisms

Thayer

1989

Applied Organom Chemis

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The Phosphorus Cycle

Cited by 8 publications

References 32 publications

Global Phosphorus Flows and Environmental Impacts from a Consumption Perspective

Global Phosphorus Flows and Environmental Impacts from a Consumption Perspective

Tetraamminezinc complex integrated interpenetrating polymer network nanocomposite membrane for phosphorous recovery

The formation and transformation of phosphorus–carbon bonds in living organisms

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