Show/Hide Menu
Hide/Show Apps
anonymousUser
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Açık Bilim Politikası
Açık Bilim Politikası
Frequently Asked Questions
Frequently Asked Questions
Browse
Browse
By Issue Date
By Issue Date
Authors
Authors
Titles
Titles
Subjects
Subjects
Communities & Collections
Communities & Collections
The determination of fertilizer quality of the formed struvite from effluent of a sewage sludge anaerobic digester
Date
2010-09-15
Author
UYSAL, Ayla
Yılmazel Tokel, Yasemin Dilşad
DEMİRER, GÖKSEL NİYAZİ
Metadata
Show full item record
This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
.
Item Usage Stats
2
views
0
downloads
The formation of struvite (MgNH4PO4 center dot 6H(2)O) in wastewater treatment plants can lead to scaling and thus operational problems reducing the treatment efficiency. However, struvite has significant commercial value as an agricultural fertilizer. Therefore, controlled struvite formation in wastewater treatment plants not only presents an opportunity to recover nutrients but also corresponds to the valorization of wastes. NH4-N and PO4-P removal and recovery from the effluent of a full-scale sewage sludge anaerobic digester via controlled struvite precipitation were investigated in this study. The effect of the residual heavy metal and micropollutant content of the formed struvite on fertilizer quality was also evaluated. Removal efficiencies of NH4-N, PO4-P and COD were 89.35%, 95% and 39.78% when Mg:N:P molar ratio was 1.5:1:1 and pH was 9.0. Mercury, nickel, zinc and chrome concentrations derived from struvite precipitation were below the regulatory limit for fertilizer usage in Turkey. The precipitate did not contain polychlorinated biphenyls (PCB). X-ray diffraction (XRD) analysis conducted on the precipitate indicated a struvite formation.
Subject Keywords
Anaerobic digester
,
Fertilizer quality
,
Heavy metal
,
Micropollutant
,
Struvite precipitation
URI
https://hdl.handle.net/11511/41148
Journal
JOURNAL OF HAZARDOUS MATERIALS
DOI
https://doi.org/10.1016/j.jhazmat.2010.05.004
Collections
Department of Environmental Engineering, Article