NATIONAL SURVEY OF 30 PER-AND POLYFLUOROALKYL SUBSTANCES (PFAS) IN DEWATERED SEWAGE SLUDGE DOI
Takeshi Matsunaga,

Ryosuke Homma,

Kazuyuki OSHITA

et al.

Japanese Journal of JSCE, Journal Year: 2024, Volume and Issue: 80(25), P. n/a - n/a

Published: Jan. 1, 2024

Language: Английский

Current understanding on the fate of contaminants during hydrothermal treatment of sewage sludge DOI Creative Commons
Kamrun Nahar, Adhithiya Venkatachalapati Thulasiraman,

Arun Krishna Vuppaladadiyam

et al.

Current Opinion in Green and Sustainable Chemistry, Journal Year: 2024, Volume and Issue: 49, P. 100960 - 100960

Published: July 22, 2024

Language: Английский

Citations

5
A critical review of biochar versus hydrochar and their application for H2S removal from biogas DOI Creative Commons

Arun Krishna Vuppaladadiyam,

Manoj Kumar Jena, Ibrahim Gbolahan Hakeem

et al.

Reviews in Environmental Science and Bio/Technology, Journal Year: 2024, Volume and Issue: 23(3), P. 699 - 737

Published: Aug. 21, 2024

Abstract Biogas contains significant quantities of undesirable and toxic compounds, such as hydrogen sulfide (H 2 S), posing severe concerns when used in energy production-related applications. Therefore, biogas needs to be upgraded by removing H S increase their bioenergy application attractiveness lower negative environmental impacts. Commercially available upgradation processes can expensive for small medium-scale production plants, wastewater treatment facilities via anaerobic digestion process. In addition, an all-inclusive review detailing a comparison biochar hydrochar removal is currently unavailable. the current study aimed critically systematically biochar/hydrochar from biogas. To achieve this, first part discussed technologies properties vs. hydrochar. exisiting adsorption mechanisms, namely physical adsorption, reactive chemisorption, responsible with char materials were discussed. Also, factors, including feedstock type, activation strategies, reaction temperature, moisture content, other process parameters that could influence behaviour are summarised. Finally, synergy trade-offs between sectors techno-economic feasibility using presented. Biochar’s excellent structural coupled alkaline pH high metal facilitate physisorption chemisorption pathways removal. case hydrochar, occurs mainly which attributed well-preserved surface functional groups. Challenges commercial adsorbents stream highlighted perspectives future research provided. Graphical abstract

Language: Английский

Citations

4
The fate of per- and polyfluoroalkyl substances (PFAS) during pyrolysis and co-pyrolysis of biosolids with alum sludge and wheat straw DOI Creative Commons

Nimesha Rathnayake,

Anithadevi Kenday Sivaram, Ibrahim Gbolahan Hakeem

et al.

Journal of Analytical and Applied Pyrolysis, Journal Year: 2025, Volume and Issue: unknown, P. 106970 - 106970

Published: Jan. 1, 2025

Language: Английский

Citations

0
Catalytic and co-hydrothermal treatment of sewage sludge: Hydrochar properties and fate of heavy metals and per and polyfluoroalkyl substances (PFAS) DOI Creative Commons
Kamrun Nahar, Ibrahim Gbolahan Hakeem, Ken Chiang

et al.

Journal of Water Process Engineering, Journal Year: 2025, Volume and Issue: 72, P. 107605 - 107605

Published: April 1, 2025

Language: Английский

Citations

0
Study on the Destruction of PCDD/Fs and Synergistic Solidification of Heavy Metals in Fly Ash by Low-Temperature Pyrolysis with the Assistant of N-Doped Hierarchical Porous Carbon DOI Open Access

Mengbin Yue,

Qiulin Wang, Haonan Wang

et al.

Processes, Journal Year: 2025, Volume and Issue: 13(4), P. 1202 - 1202

Published: April 16, 2025

There is an urgent need for energy-efficient disposal and resource utilization of the fly ashes from municipal solid waste incineration (MSWI). The low-energy pyrolysis-based detoxification a prerequisite harmless treatment sustainable ashes. In this study, nitrogen-doped hierarchical porous carbon (NHPC) was prepared biomass-derived corn cobs used to enhance low-temperature destruction PCDD/Fs in MSWI ash. On thermal pure nitrogen (referring pyrolysis in) at 350 °C 30 min, removal efficiencies ash based on mass (ηmass) TEQ (ηTEQ) are 87.4% 76.2%, respectively. After 5 wt.% NHPC added ash, ηmass ηTEQ values can be increased 94.9% 90.2%. decomposition inhibit regeneration regulate structural properties optimize chemical environment It eliminate washing process. addition, leaching concentrations heavy metals such as Cu, Zn, Pb Cr experience significant reductions 83.3%, 73.7%, 35.6% 22.9% when pyrolyzed with NHPC. This finding suggests that cannot only facilitate but also immobilizes typical during pyrolysis. anticipated application great energy-saving effect tackle issues within single step.

Language: Английский

Citations

0
Advancing pyrolysis of sewage sludge: Bibliometrics analysis, life cycle assessment, and circular economy insights DOI
Alia Syafiqah Abdul Hamed, Nur Farizan Munajat,

Nazaitulshila Rasit

et al.

Thermal Science and Engineering Progress, Journal Year: 2025, Volume and Issue: unknown, P. 103693 - 103693

Published: May 1, 2025

Language: Английский

Citations

0
Understanding the Impact of Pre-digestion Thermal Hydrolysis Process on PFAS in Anaerobically Digested Biosolids DOI Creative Commons

Caroline Rose Alukkal,

Linda Lee, Dana González

et al.

Chemosphere, Journal Year: 2024, Volume and Issue: 365, P. 143406 - 143406

Published: Sept. 24, 2024

Language: Английский

Citations

2
The Fate of Fluorine Post Per- and Polyfluoroalkyl Substances Destruction during the Thermal Treatment of Biosolids: A Thermodynamic Study DOI Creative Commons
Savankumar Patel, Pobitra Halder, Ibrahim Gbolahan Hakeem

et al.

Energies, Journal Year: 2024, Volume and Issue: 17(14), P. 3476 - 3476

Published: July 15, 2024

Per- and polyfluoroalkyl substances (PFAS) are a group of fluorinated synthetic chemicals that highly recalcitrant, toxic, bio-accumulative have been detected in biosolids worldwide, posing potential risks to humans the environment. Recent studies suggest organic C-F bond PFAS can be destructed potentially mineralised into inorganic fluorides during thermal treatment. This study focuses on thermodynamic equilibrium investigations fate fluorine compounds post-PFAS destruction biosolid The results indicate gas-phase mainly hydrogen fluoride (HF) alkali fluorides, whereas solid-phase include alkaline earth their spinels. High moisture oxygen content volatiles increased concentration HF gas phase. However, adding minerals reduced emission phase significantly enhanced capture as CaF2 spinel solid also investigates effect feedstock composition fluorine. ash low volatile matter emissions product. findings this work useful designing systems with optimised operating conditions for minimising release species treatment PFAS-containing biosolids.

Language: Английский

Citations

1
Innovative chemical functionalisation of biosolids for removing heavy metals and enhancing ammonium recovery from wastewater DOI Creative Commons
Mojtaba Hedayati Marzbali, Ibrahim Gbolahan Hakeem, Tuan Ngo

et al.

International Journal of Environmental Science and Technology, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 28, 2024

Abstract This study addresses ammonium removal from wastewater effluents. The utilisation of biosolids (stabilized sewage sludge) derived products as adsorbents was explored to contribute sustainable sludge management. Biosolids were subjected a mild acid (10% v/v HNO 3 ) and alkali (0.5 M NaOH) treatment at ambient conditions followed by pyrolysis 450 °C. R-COOH functional group introduced the biochar surface ionic replacement H + with Na NaOH form R-COO-Na group. groups studied via XPS, EDS, FTIR analyses. chemical achieved on average about 75% heavy metals product. modified showed high adsorption capacity both synthetic (17.03 mg g −1 real digester effluent (16.1 ), higher than that raw (5.23 in effluent). N-laden (composed 1.6 wt% nitrogen) reduced content could be applied land slow-release nitrogen fertiliser. Economic analysis reveals net present value $1 million payback period 8 years. approach potentially reduces environmental pollution provides economic benefits cost-effective waste solutions. Graphical abstract

Language: Английский

Citations

1
NATIONAL SURVEY OF 30 PER-AND POLYFLUOROALKYL SUBSTANCES (PFAS) IN DEWATERED SEWAGE SLUDGE DOI
Takeshi Matsunaga,

Ryosuke Homma,

Kazuyuki OSHITA

et al.

Japanese Journal of JSCE, Journal Year: 2024, Volume and Issue: 80(25), P. n/a - n/a

Published: Jan. 1, 2024

Language: Английский

Citations

0