Phosphorus removal rules of duckweed plants in eutrophication water

Dongrong Cai; Yanhua Xu

doi:10.3969/j.issn.1002-6819.2011.z2.037

Phosphorus removal rules of duckweed plants in eutrophication water

Dongrong Cai, Yanhua Xu

School of Environmental Science and Engineering

Nanjing Tech University

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

Phosphorus, the cause of most eutrophication cases, is often the limiting factor of algae proliferation. The key point toward restoration of eutrophicated water body is phosphorus removal. Based on studies of phosphorus-absorption kinetics and dynamic absorption characteristics among three kinds of duckweed, the suitable one was identified for water bodies with various eutrophic levels. Experiment results indicated that kinetic characteristics of phosphorus-absorption of certain duckweed plants can be described by the Michaelis-Menten equation. In addition, it was found that Lemna minor has the highest value of 1/K _m and is suitable for restoring water bodies slightly eutrophicacted. Spirodela polyrhiza, with the highest value of V _max among the three, which can be used for restoration of the heavily eutrophicated water bodies. While Spirodela oligorrhiza, with low absorption rate and slow growth, is therefore unqualified for purification purpose.

Original language	English
Pages (from-to)	187-190
Number of pages	4
Journal	Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Volume	27
Issue number	SUPPL.2
DOIs	https://doi.org/10.3969/j.issn.1002-6819.2011.z2.037
State	Published - Dec 2011

Keywords

Duckweed
Dynamic absorption
Kinetics
Phosphorus
Sewage

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title = "Phosphorus removal rules of duckweed plants in eutrophication water",

abstract = "Phosphorus, the cause of most eutrophication cases, is often the limiting factor of algae proliferation. The key point toward restoration of eutrophicated water body is phosphorus removal. Based on studies of phosphorus-absorption kinetics and dynamic absorption characteristics among three kinds of duckweed, the suitable one was identified for water bodies with various eutrophic levels. Experiment results indicated that kinetic characteristics of phosphorus-absorption of certain duckweed plants can be described by the Michaelis-Menten equation. In addition, it was found that Lemna minor has the highest value of 1/K m and is suitable for restoring water bodies slightly eutrophicacted. Spirodela polyrhiza, with the highest value of V max among the three, which can be used for restoration of the heavily eutrophicated water bodies. While Spirodela oligorrhiza, with low absorption rate and slow growth, is therefore unqualified for purification purpose.",

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AU - Xu, Yanhua

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AB - Phosphorus, the cause of most eutrophication cases, is often the limiting factor of algae proliferation. The key point toward restoration of eutrophicated water body is phosphorus removal. Based on studies of phosphorus-absorption kinetics and dynamic absorption characteristics among three kinds of duckweed, the suitable one was identified for water bodies with various eutrophic levels. Experiment results indicated that kinetic characteristics of phosphorus-absorption of certain duckweed plants can be described by the Michaelis-Menten equation. In addition, it was found that Lemna minor has the highest value of 1/K m and is suitable for restoring water bodies slightly eutrophicacted. Spirodela polyrhiza, with the highest value of V max among the three, which can be used for restoration of the heavily eutrophicated water bodies. While Spirodela oligorrhiza, with low absorption rate and slow growth, is therefore unqualified for purification purpose.

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KW - Kinetics

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Phosphorus removal rules of duckweed plants in eutrophication water

Abstract

Keywords

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