Journal of Food, Agriculture and Environment

Relation between heavy metal fraction in soils and plants enrichment in pilot scale experiment on land application of sewage sludge

Author(s):

Limin Ma ^*, Houran Sun, Ling Chen, Jianfu Zhao

Recieved Date: 2011-07-06, Accepted Date: 2011-09-30

Abstract:

In order to understand the heavy metals accumulation and transfer in a plant-soil system in sewage sludge applied soils, 15 familiar garden plants (including 7 herbages, 5 shrubs and 3 arbor species) were planted in soil with sewage land application at the experimental site in Shanghai, China. The experiment measured the changes in 7 heavy metals (Zn, Cu, Ni, Cd, Pb, Cr and As) fractions and concentrations in the soils and the distribution of heavy metals in plants during a growth season. The results showed that the physical and chemical properties of the soil were much changed after the sewage land application. The heavy metal concentrations and fractions changed after the sewage sludge was applied on the land. The planting experiment indicated that the capability of plants to accumulate heavy metals was mainly related to the plant species. The distributions of heavy metals in plant were different. For most plants in the experiment, the element concentrations of roots were higher than those of the above-ground parts of plants. The order of ability to accumulate the heavy metals was herbages > shrubs > arbor in both above-ground and below-ground parts of these garden plants. The results also showed that the absorption of heavy metals in soil into the plants was determined by the fractions, contents of the heavy metals, and the selective absorption of plants. With respect to the absorption of heavy metals in plants, a 30% application rate was probably the optimum application rate for the experimental land.

Keywords:

Sewage sludge, land application, garden plant, heavy metals, fractions, sequential extraction

---

Journal: Journal of Food, Agriculture and Environment
Year: 2011
Volume: 9
Issue: 3&4
Category: Environment
Pages: 967-973

---

Full text for Subscribers

---

Information:

Note to users

The requested document is freely available only to subscribers/registered users with an online subscription to the Journal of Food, Agriculture & Environment. If you have set up a personal subscription to this title please enter your user name and password. All abstracts are available for free.

Article purchasing

If you like to purchase this specific document such as article, review or this journal issue, contact us. Specify the title of the article or review, issue, number, volume and date of the publication. Software and compilation, Science & Technology, all rights reserved. Your use of this website details or service is governed by terms of use. Authors are invited to check from time to time news or information.

---

Purchase this Article:   20 Purchase PDF Order Reprints for 15

---

Share this article :