Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
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
188
views
0
downloads
Cite This
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
Suggestions
OpenMETU
Core
Investigation of the growth and operational conditions for the enrichment of Chlorella vulgaris and its use in anaerobic digestate treatment
Subaşı, Irmak; Bayramoğlu, Tuba Hande; Department of Environmental Engineering (2022-2-11)
Recently, microalgae have proved its prosperity in wastewater treatment technologies with high nutrient removal efficiency and robustness. Thus, the aim of this master thesis focused to investigate the optimum conditions for enrichment of Chlorella vulgaris under autotrophic and mixotrophic conditions and to research the treatment of anaerobic digestate with C. Vulgaris. In this thesis study, C. Vulgaris culture was first enriched under autotrophic conditions ammonium-N. The optimum illumination period of ...
Investigating the effect of solids retention time on pesticides removal in an activated sludge process
Kocaman, Kumru; Yetiş, Ülkü; Dilek, Filiz Bengü (2022-10-01)
© 2022 Elsevier B.V.The levels of pesticides reaching the biological wastewater treatment plants have been increasing. Operational conditions leading to the most efficient removal of pesticides in these plants should be evaluated first before attempting tertiary-level treatment options. This study investigated the influence of solids retention times (SRTs) on the removal of three pesticides (carbendazim, imidacloprid, and aclonifen) in the activated sludge process. Laboratory-scale reactors receiving these ...
Impact of wastewater treatment plants on dissemination of antibiotic resistance genes
Küçükünsal, Serkan; İçgen, Bülent; Department of Environmental Engineering (2019)
Wastewater treatment plants (WWTPs) as hotspots of the antibiotic resistance genes (ARGs) pose risk to receiving environments. Removal of ARGs through WWTPs, therefore, is great importance. For this reason, common types of WWTPs including conventional activated sludge (CAS), biological nutrient removal (BNR), sequencing batch reactor (SBR), membrane bioreactor (MBR), package MBR, WWTP with coagulation-flocculation and UV disinfection units were investigated in terms of their seasonal removal efficiencies on...
Investigation of sodium and potassium ions in relation to bioflocculation of mixed culture microorganisms
Kara, Fadime; Sanin, Faika Dilek; Department of Biotechnology (2007)
Bioflocculation happens naturally and microorganisms aggregate into flocs during wastewater treatment. It is critical to understand the mechanisms of bioflocculation and its impact on the following solid/liquid separation process since seperation by settling is one of the key aspects that determine the efficiency and the overall economy of activated sludge systems. Bioflocculation occurs via extracellular polymeric substances (EPS) and cations by creating a matrix to hold various floc components together so...
Impact of UV treatment for the removal of bacterial genes during wastewater treatment
Bulut, Taliye; İçgen, Bülent (null; 2018-06-23)
Wastewater treatment plants (WWTPs) are considered as important hotspots for the spread of the antibiotic resistance genes (ARGs). The dissemination of ARGs is one of the most significant threat to public health. This also causes a danger for water quality in surface waters and groundwater. These waters can easily be included in human life by their use in places such as agriculture, livestock and drinking waters. The bacterial gene is important to analyze the quantity of the total bacterial load and to norm...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
A. UYSAL, Y. D. Yılmazel Tokel, and G. N. DEMİRER, “The determination of fertilizer quality of the formed struvite from effluent of a sewage sludge anaerobic digester,”
JOURNAL OF HAZARDOUS MATERIALS
, pp. 248–254, 2010, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/41148.