Journal of Food, Agriculture and Environment

Ameliorative effect of different doses of MgNH₄PO₄.6H₂O precipitate recovered from the effluent of UASB treating poultry manure wastewater: Growth of Lolium perenne

Author(s):

Kaan Yetilmezsoy ¹, Begum Sertyesilisik ^2*, Emel Kocak ¹, Zehra Sapci-Zengin ¹

Recieved Date: 2009-05-18, Accepted Date: 2009-10-12

Abstract:

The ameliorative effect of different doses of MgNH₄PO₄.6H₂O (MAP) precipitate was investigated in a series of lab-scale experiments. The high strength of ammonium nitrogen was first recovered from the effluent of up-flow anaerobic sludge blanket (UASB) treating poultry manure wastewater (PMW) using different combinations of chemicals. Previous results indicated that maximum NH₄⁺-N removal was obtained as 85.4% at pH 9.0 with the addition of MgCl₂.6H₂O + KH₂PO₄ at the stoichiometric ratio (Mg²⁺:NH₄⁺-N:PO₄^3- -P = 1:1:1). Following to MAP precipitation tests, three quick-growth plants including purslane, garden cress and grass were tested to explore the ameliorative effect of the MAP precipitate obtained under the optimum conditions. Results of the first stage greenhouse experiments showed that the rates of increase in fresh and dry weights, as well as in fresh height of grass grown in the garden soil were about 257, 402 and 156% for MAP as compared with control, respectively. Since the growth rates of grass in terms of both measured weights and height were found to be superior than other types of test plants, grass was selected as the model plant for the further agricultural experiments conducted in this study. A total of 7 pots, including the control, were set up in parallel with different MAP/ seed ratios ranging from 1-10 (g/g) for cultivation of grass. Results demonstrated that over-dosing of MAP in the garden soil did not cause any inhibition of sprouting or burning effect on the growth of grass, due to its limited solubility in water. Apart from the agricultural research, physical and fire-retardant properties of the recovered MAP precipitate used in the experiments were also presented as a part of this investigation.

Keywords:

Up-flow anaerobic sludge blanket, poultry manure wastewater, ammonium nitrogen, magnesium ammonium phosphate (MAP), Lolium perenne

---

Journal: Journal of Food, Agriculture and Environment
Year: 2009
Volume: 7
Issue: 3&4
Category: Environment
Pages: 823-831

---

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 :