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Transformation Kinetics of Phosphorus and Nitrogen in Iron-Rich Sewage Sludges during Hydrothermal Treatment and Recovery of Nutrients from Process Water

Journal Article · · ACS Sustainable Chemistry & Engineering
 [1];  [2];  [1];  [1];  [3];  [2]
  1. Georgia Inst. of Technology, Atlanta, GA (United States). School of Earth and Atmospheric Sciences
  2. Georgia Inst. of Technology, Atlanta, GA (United States). School of Earth and Atmospheric Sciences; Changwon National University (Korea)
  3. Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
Hydrothermal treatment (HT) is an emerging technique for sustainable sewage sludge management and resource recovery. Many sludges are rich in iron (Fe) due to the common addition of Fe salts in water resource recovery facilities. To develop guidance for reaction conditions targeting nutrient recovery, this study systematically investigated the influence of HT temperature, treatment time, and sludge source on the dynamic speciation evolution of phosphorus (P) and nitrogen (N) during HT of Fe-rich sewage sludge. Complementary chemical extraction and X-ray spectroscopy analyses were conducted to characterize the treatment products. For the sludge mixture (a blend of primary and waste activated sludges), P speciation did not change significantly within 4.5 h at 125 °C HT, while soluble and labile P was converted into insoluble P over time at 175 and 225 °C HT. Strengite (FePO4·2H2O) preferentially formed in the hydrochars with increasing treatment temperature and/or time, whereas 125 °C HT within 1.5 h favored the formation of vivianite (Fe3(PO4)2·8H2O). Organic P was completely decomposed into orthophosphate when the HT temperature reached up to 175 °C. Pyrrole-N was enriched in the hydrochars. Similar reaction pathways were observed during HT of anaerobically digested sludge, though some minor differences in Fe-associated P and organic P were observed. Meanwhile, HT of the two sludges released orthophosphate and ammonia into the process waters at 175 and 225 °C, which can be recovered by a sequential process involving struvite (MgNH4PO4·6H2O) precipitation and air stripping. This study provides new insights into the transformation of P and N during HT of Fe-rich sludges as well as a modular design for maximum P and N recovery from the treatment products.
Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1813052
Journal Information:
ACS Sustainable Chemistry & Engineering, Journal Name: ACS Sustainable Chemistry & Engineering Journal Issue: 31 Vol. 9; ISSN 2168-0485
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (68)

Hydrothermal carbonization of biomass: A summary and discussion of chemical mechanisms for process engineering journal March 2010
Characterization of soil-fertilizer P reaction products and their evaluation as sources of P for gram (Cicer arietinum L.) journal January 1996
Vivianite auto-oxidation journal November 1997
Mössbauer effect study of the oxidation of vivianite journal October 1990
Evaluation and comparison of product yields and bio-methane potential in sewage digestate following hydrothermal treatment journal December 2017
Simultaneous phosphorus and nitrogen recovery from anaerobically digested sludge using a hybrid system coupling hydrothermal pretreatment with MAP precipitation journal November 2017
Feedwater pH affects phosphorus transformation during hydrothermal carbonization of sewage sludge journal December 2017
The transformation pathways of nitrogen in sewage sludge during hydrothermal treatment journal December 2017
Co-hydrothermal treatment of fallen leaves with iron sludge to prepare magnetic iron product and solid fuel journal June 2018
Synchrotron based NEXAFS study on nitrogen doped hydrothermal carbon: Insights into surface functionalities and formation mechanisms journal April 2017
A design of experiments to assess phosphorous removal and crystal properties in struvite precipitation of source separated urine using different Mg sources journal August 2016
Acidic hydrothermal treatment: Characteristics of organic, nitrogen and phosphorus releasing and process optimization on lincomycin removal from lincomycin mycelial residues journal March 2018
Opportunities and challenges in sustainable treatment and resource reuse of sewage sludge: A review journal April 2018
Hydrothermal conversion of sewage sludge: Focusing on the characterization of liquid products and their methane yields journal February 2019
Phosphorus species transformation and recovery without apatite in FeCl3-assisted sewage sludge hydrothermal treatment journal November 2020
Self-generation of low ash carbon microspheres from the hydrothermal supernatant of anaerobic digestate: Formation insights and supercapacitor performance journal May 2021
Recovery of phosphorus and nitrogen from human urine by struvite precipitation, air stripping and acid scrubbing: A pilot study journal December 2018
Potentials and challenges of phosphorus recovery as vivianite from wastewater: A review journal July 2019
Hydrothermal conversion of dewatered sewage sludge: Focusing on the transformation mechanism and recovery of phosphorus journal August 2019
Mechanism of wet sewage sludge pyrolysis in a tubular furnace journal January 2011
Nitrogen transformation among char, tar and gas during pyrolysis of sewage sludge and corresponding hydrochar journal July 2017
Hydrothermal carbonization and pyrolysis of sewage sludges: What happen to carbon and nitrogen? journal November 2017
Behavior of Stable Carbon and Stable Nitrogen Isotopes during Hydrothermal Carbonization of biomass journal May 2018
Engineering of struvite crystals by regulating supersaturation – Correlation with phosphorus recovery, crystal morphology and process efficiency journal February 2019
Novel approach of phosphate-reclamation as struvite from sewage sludge by utilising hydrothermal carbonization journal May 2019
Reclaimed phosphorus commodity reserve from water resource recovery facilities—A strategic regional concept towards phosphorus recovery journal November 2019
Magnetic separation and characterization of vivianite from digested sewage sludge journal October 2019
Hydrothermal carbonization of food waste for nutrient recovery and reuse journal November 2017
Energy and phosphorous recovery through hydrothermal carbonization of digested sewage sludge journal March 2020
Iron and phosphorus speciation in Fe-conditioned membrane bioreactor activated sludge journal June 2015
Volatile fatty acids (VFAs) production from swine manure through short-term dry anaerobic digestion and its separation from nitrogen and phosphorus resources in the digestate journal March 2016
Effects of calcium and ferric ions on struvite precipitation: A new assessment based on quantitative X-ray diffraction analysis journal May 2016
Evolution of phosphorus complexation and mineralogy during (hydro)thermal treatments of activated and anaerobically digested sludge: Insights from sequential extraction and P K-edge XANES journal September 2016
Vivianite as an important iron phosphate precipitate in sewage treatment plants journal November 2016
Vivianite as the main phosphate mineral in digested sewage sludge and its role for phosphate recovery journal November 2018
Enhancement in adsorption potential of microplastics in sewage sludge for metal pollutants after the wastewater treatment process journal June 2019
Full-scale increased iron dosage to stimulate the formation of vivianite and its recovery from digested sewage sludge journal September 2020
Hydrothermal Carbonization and Liquefaction of Sludge for Harmless and Resource Purposes: A Review journal September 2020
Fate of Nitrogen during Hydrothermal Carbonization journal September 2016
Molecular Structure and Formation Mechanism of Hydrochar from Hydrothermal Carbonization of Carbohydrates journal August 2019
Prediction of Hydrothermal Carbonization with Respect to the Biomass Components and Severity Factor journal August 2019
Coevolution of Iron, Phosphorus, and Sulfur Speciation during Anaerobic Digestion with Hydrothermal Pretreatment of Sewage Sludge journal June 2020
Ammonia Recovery from Hydrolyzed Human Urine by Forward Osmosis with Acidified Draw Solution journal August 2020
The Relevance of Phosphorus and Iron Chemistry to the Recovery of Phosphorus from Wastewater: A Review journal May 2015
Effective Nitrogen Removal and Recovery from Dewatered Sewage Sludge Using a Novel Integrated System of Accelerated Hydrothermal Deamination and Air Stripping journal May 2015
Speciation Dynamics of Phosphorus during (Hydro)Thermal Treatments of Sewage Sludge journal December 2015
Energy and Nutrient Recovery from Sewage Sludge and Manure via Anaerobic Digestion with Hydrothermal Pretreatment journal December 2019
Migration and Transformation of Phosphorus during Hydrothermal Carbonization of Sewage Sludge: Focusing on the Role of pH and Calcium Additive and the Transformation Mechanism journal May 2020
Effect of Interstage Hydrothermal Treatment on Anaerobic Digestion of Sewage Sludge: Speciation Evolution of Phosphorus, Iron, and Sulfur journal October 2020
Effect of Prestage Hydrothermal Treatment on the Formation of Struvite vs Vivianite during Semicontinuous Anaerobic Digestion of Sewage Sludge journal June 2021
Coupling Hydrothermal Treatment with Stripping Technology for Fast Ammonia Release and Effective Nitrogen Recovery from Chicken Manure journal June 2016
Thermal Chemistry of Nitrogen in Kerogen and Low-Rank Coal journal March 1999
Nitrogen Conversion in Relation to NH 3 and HCN during Microwave Pyrolysis of Sewage Sludge journal March 2013
Investigation on the Evolution of N-Containing Organic Compounds during Pyrolysis of Sewage Sludge journal August 2014
Phosphorus in Manure and Sewage Sludge More Recyclable than in Soluble Inorganic Fertilizer journal January 2015
Speciation and kinetic study of iron promoted sugar conversion to 5-hydroxymethylfurfural (HMF) and levulinic acid (LA) journal January 2015
Molecular characteristics of the refractory organic matter in the anaerobic and aerobic digestates of sewage sludge journal January 2018
Efficient ammonia recovery from wastewater using electrically conducting gas stripping membranes journal January 2020
GSAS-II : the genesis of a modern open-source all purpose crystallography software package journal March 2013
ATHENA , ARTEMIS , HEPHAESTUS : data analysis for X-ray absorption spectroscopy using IFEFFIT journal June 2005
Tracing the Influence of Sewage Nitrogen in a Coastal Ecosystem Using Stable Nitrogen Isotopes journal March 2005
Chemical Composition of Sewage Sludges and Analysis of Their Potential Use as Fertilizers journal April 1977
Phosphorous Retention and Release by Sludge-Derived Hydrochar for Potential Use as a Soil Amendment journal March 2019
Changes in Inorganic and Organic Soil Phosphorus Fractions Induced by Cultivation Practices and by Laboratory Incubations1 journal January 1982
Direct Colorimetric Measurement of Ammonium in Potassium Chloride Extracts of Soils journal July 1983
Struvite formation, analytical methods and effects of pH and Ca2 +  journal October 2008
Removal and recovery of N, P and K from urine via ammonia stripping and precipitations of struvite and struvite-K journal October 2016
Significance of Vivianite Precipitation on the Mobility of Iron in Anaerobically Digested Sludge journal September 2016

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