Simultaneous recovery of phosphorus and nitrogen from inorganic fertilizer wastewater

The conventional method for removal of N and P from industrial wastewater by biological treatment requires a long hydraulic- retention- time (HRT) and strict conditions for protecting the microorganisms. This study focuses on N and P recovery by struvite (MgNH4PO4.6H2O) precipitation method which is...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Dinh Huu Phu, Le Tuyet Ngoc, Le Nguyen Quang Tu, Do Thi Minh Hieu, Nguyen Quang Long, Minh-Vien Le
Formato:	article
Lenguaje:	EN
Publicado:	Tamkang University Press 2021
Materias:	fertilizer industry nitrogen recovery phosphorous recovery process optimization struvite Engineering (General). Civil engineering (General) TA1-2040 Chemical engineering TP155-156 Physics QC1-999
Acceso en línea:	https://doaj.org/article/1d2adb55f86b49e9b97ec2d593186cb7
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:1d2adb55f86b49e9b97ec2d593186cb7
record_format	dspace
spelling	oai:doaj.org-article:1d2adb55f86b49e9b97ec2d593186cb72021-11-27T11:30:42ZSimultaneous recovery of phosphorus and nitrogen from inorganic fertilizer wastewater10.6180/jase.202208_25(4).00132708-99672708-9975https://doaj.org/article/1d2adb55f86b49e9b97ec2d593186cb72021-11-01T00:00:00Zhttp://jase.tku.edu.tw/articles/jase-202208-25-4-0013https://doaj.org/toc/2708-9967https://doaj.org/toc/2708-9975The conventional method for removal of N and P from industrial wastewater by biological treatment requires a long hydraulic- retention- time (HRT) and strict conditions for protecting the microorganisms. This study focuses on N and P recovery by struvite (MgNH4PO4.6H2O) precipitation method which is a fast chemical process. In order to control the specs of the sample, a simulated wastewater solution was prepared according to the parameters of inorganic fertilizer wastewater. The influence of pH (7-9), Mg/P molar ratio (1-1.6), and N/P molar ratio (1.2-2) in struvite recovery efficiency were evaluated and the obtained struvite samples were characterized using X-ray diffraction (XRD), scanning electron micrograph (SEM). Response surface methodology (RSM) was utilized in Box-Behnken experimental design and data analysis to obtain a mathematic for P and N recovery. The XRD and SEM results confirmed the formation of struvite structure with a particle size of about 7-50 micrometers. The obtained struvite contained nutrients N, P2O5, and MgO which can be used directly in fertilizer formulation. The mathematic models for P recovery and N recovery were obtained from analyzing experimental data with a p-value <0.05. Based on the proposed parameters (pH=9, Mg/P=1.4, and N/P=1.2) obtained from the mathematic model, 98% of phosphorous from an actual fertilizer wastewater sample (pH=8.3, N/P=1.2, P=2.98g L−1) can be recovered. The obtained mathematic model and the suggested technical conditions can be applied for simultaneous recovery of ammonium and phosphate from practical wastewater with high concentrations such as in the fertilizer industry.Dinh Huu PhuLe Tuyet NgocLe Nguyen Quang TuDo Thi Minh HieuNguyen Quang LongMinh-Vien LeTamkang University Pressarticlefertilizer industrynitrogen recoveryphosphorous recoveryprocess optimizationstruviteEngineering (General). Civil engineering (General)TA1-2040Chemical engineeringTP155-156PhysicsQC1-999ENJournal of Applied Science and Engineering, Vol 25, Iss 3, Pp 673-684 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	fertilizer industry nitrogen recovery phosphorous recovery process optimization struvite Engineering (General). Civil engineering (General) TA1-2040 Chemical engineering TP155-156 Physics QC1-999
spellingShingle	fertilizer industry nitrogen recovery phosphorous recovery process optimization struvite Engineering (General). Civil engineering (General) TA1-2040 Chemical engineering TP155-156 Physics QC1-999 Dinh Huu Phu Le Tuyet Ngoc Le Nguyen Quang Tu Do Thi Minh Hieu Nguyen Quang Long Minh-Vien Le Simultaneous recovery of phosphorus and nitrogen from inorganic fertilizer wastewater
description	The conventional method for removal of N and P from industrial wastewater by biological treatment requires a long hydraulic- retention- time (HRT) and strict conditions for protecting the microorganisms. This study focuses on N and P recovery by struvite (MgNH4PO4.6H2O) precipitation method which is a fast chemical process. In order to control the specs of the sample, a simulated wastewater solution was prepared according to the parameters of inorganic fertilizer wastewater. The influence of pH (7-9), Mg/P molar ratio (1-1.6), and N/P molar ratio (1.2-2) in struvite recovery efficiency were evaluated and the obtained struvite samples were characterized using X-ray diffraction (XRD), scanning electron micrograph (SEM). Response surface methodology (RSM) was utilized in Box-Behnken experimental design and data analysis to obtain a mathematic for P and N recovery. The XRD and SEM results confirmed the formation of struvite structure with a particle size of about 7-50 micrometers. The obtained struvite contained nutrients N, P2O5, and MgO which can be used directly in fertilizer formulation. The mathematic models for P recovery and N recovery were obtained from analyzing experimental data with a p-value <0.05. Based on the proposed parameters (pH=9, Mg/P=1.4, and N/P=1.2) obtained from the mathematic model, 98% of phosphorous from an actual fertilizer wastewater sample (pH=8.3, N/P=1.2, P=2.98g L−1) can be recovered. The obtained mathematic model and the suggested technical conditions can be applied for simultaneous recovery of ammonium and phosphate from practical wastewater with high concentrations such as in the fertilizer industry.
format	article
author	Dinh Huu Phu Le Tuyet Ngoc Le Nguyen Quang Tu Do Thi Minh Hieu Nguyen Quang Long Minh-Vien Le
author_facet	Dinh Huu Phu Le Tuyet Ngoc Le Nguyen Quang Tu Do Thi Minh Hieu Nguyen Quang Long Minh-Vien Le
author_sort	Dinh Huu Phu
title	Simultaneous recovery of phosphorus and nitrogen from inorganic fertilizer wastewater
title_short	Simultaneous recovery of phosphorus and nitrogen from inorganic fertilizer wastewater
title_full	Simultaneous recovery of phosphorus and nitrogen from inorganic fertilizer wastewater
title_fullStr	Simultaneous recovery of phosphorus and nitrogen from inorganic fertilizer wastewater
title_full_unstemmed	Simultaneous recovery of phosphorus and nitrogen from inorganic fertilizer wastewater
title_sort	simultaneous recovery of phosphorus and nitrogen from inorganic fertilizer wastewater
publisher	Tamkang University Press
publishDate	2021
url	https://doaj.org/article/1d2adb55f86b49e9b97ec2d593186cb7
work_keys_str_mv	AT dinhhuuphu simultaneousrecoveryofphosphorusandnitrogenfrominorganicfertilizerwastewater AT letuyetngoc simultaneousrecoveryofphosphorusandnitrogenfrominorganicfertilizerwastewater AT lenguyenquangtu simultaneousrecoveryofphosphorusandnitrogenfrominorganicfertilizerwastewater AT dothiminhhieu simultaneousrecoveryofphosphorusandnitrogenfrominorganicfertilizerwastewater AT nguyenquanglong simultaneousrecoveryofphosphorusandnitrogenfrominorganicfertilizerwastewater AT minhvienle simultaneousrecoveryofphosphorusandnitrogenfrominorganicfertilizerwastewater
_version_	1718408971626217472

Simultaneous recovery of phosphorus and nitrogen from inorganic fertilizer wastewater

Ejemplares similares