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Yan X, Zhao S, Hu J, Dang J, Yao S, Cai J, Sittijunda S, Wang W, Lee DJ, Yang P. Absorbing oxygen carriers promotes phosphorus recovery from sludge via the microwave thermal conversion process. BIORESOURCE TECHNOLOGY 2024; 401:130760. [PMID: 38692376 DOI: 10.1016/j.biortech.2024.130760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 04/28/2024] [Accepted: 04/28/2024] [Indexed: 05/03/2024]
Abstract
This study aims to apply the Absorbing oxygen carriers (AOCs) to induce the migration and transformation of phosphorus compounds during the microwave thermal conversion of sludge so the hard-to-extract organic phosphorus (OP) can be converted to easy-to-extract inorganic phosphorus (IP) and be enriched onto the sludge char. The AOCs were recycled by screen separation from the IP-rich sludge char, with the latter being a renewable phosphorus source from sludge. The AOCs in this novel process enhanced the conversion efficiency of OP into non-apatite inorganic phosphorus (NAlP), which was further converted to apatite inorganic phosphorus (AP). Most phosphorus in the sludge char is presented in the form of orthophosphate.
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Affiliation(s)
- Xiaoyu Yan
- College of Mechanical & Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, China
| | - Shuheng Zhao
- College of Mechanical & Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, China; Collaborative Innovation Center of Biomass Energy, Henan Province, Zhengzhou 450002, China
| | - Jianjun Hu
- College of Mechanical & Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, China; Collaborative Innovation Center of Biomass Energy, Henan Province, Zhengzhou 450002, China.
| | - Jiatao Dang
- College of Mechanical & Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, China; Collaborative Innovation Center of Biomass Energy, Henan Province, Zhengzhou 450002, China
| | - Sen Yao
- College of Mechanical & Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, China; Collaborative Innovation Center of Biomass Energy, Henan Province, Zhengzhou 450002, China
| | - Junmeng Cai
- Biomass Energy Engineering Research Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Sureewan Sittijunda
- Faculty of Environment and Resource Studies, Mahidol University, Nakhon Pathom 73170, Thailand
| | - Wei Wang
- College of Mechanical & Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, China; Collaborative Innovation Center of Biomass Energy, Henan Province, Zhengzhou 450002, China
| | - Duu-Jong Lee
- Collaborative Innovation Center of Biomass Energy, Henan Province, Zhengzhou 450002, China; Department of Mechanical Engineering, City University of Hong Kong, Kowloon Tong, Hong Kong, China.
| | - Panbo Yang
- College of Mechanical & Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, China
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Wei Z, Qin Y, Li X, Gao P. Resource recovery of high value-added products from wastewater: Current status and prospects. BIORESOURCE TECHNOLOGY 2024; 398:130521. [PMID: 38432547 DOI: 10.1016/j.biortech.2024.130521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 02/29/2024] [Accepted: 02/29/2024] [Indexed: 03/05/2024]
Abstract
Wastewater resource recovery not only allows the extraction of value-added products and offsets the operational costs of wastewater treatment, but it is also conducive to alleviating adverse environmental issues due to energy and chemical inputs and associated emissions. A number of attractive compounds such as alginate-like polymers, struvite, polyhydroxyalkanoates, and sulfated polysaccharides, were found and successfully obtained from wastewater and have a wide range of application prospects. The aim of this work is to provide a comprehensive review of recent advances in recovery of these popular products from wastewater, and their physicochemical properties, main sources, and current recovery status are summarized. Various factors influencing the recovery performance of these materials are thoroughly discussed. Moreover, the research needs and future directions towards wastewater resource recovery are highlighted. This study can provide valuable insights for future research endeavors aiming to improve wastewater resource recovery through the retrieval of high value-added products.
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Affiliation(s)
- Zihan Wei
- College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
| | - Yan Qin
- College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
| | - Xiang Li
- College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
| | - Pin Gao
- College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China; National & Local Joint Engineering Laboratory for Municipal Sewage Resource Utilization Technology, Suzhou University of Science and Technology, Suzhou 215009, China; National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agroenvironmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China.
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Zhang G, Li W, Li D, Wang S, Lv L. Integration of ammonium assimilation with denitrifying phosphorus removal for efficient nutrient management in wastewater treatment. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 353:120116. [PMID: 38280251 DOI: 10.1016/j.jenvman.2024.120116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 10/30/2023] [Accepted: 01/12/2024] [Indexed: 01/29/2024]
Abstract
Nutrient removal from sewage is transitioning to nutrient recovery. However, biological treatment technologies to remove and recover nutrients from domestic sewage are still under investigation. This study delved into the integration of ammonium assimilation with denitrifying phosphorus removal (DPR) as a method for efficient nutrient management in sewage treatment. Results indicated this approach eliminated over 80 % of the nitrogen in the influent, simultaneously recovering over 60 % of the nitrogen as the activated sludge through ammonia assimilation, and glycerol facilitated this process. The nitrification/denitrifying phosphorus removal ensured the stability of both nitrogen and phosphorus removal. The phosphorus removal rate exceeded 96 %, and the DPR rate reached over 90 %. Network analysis highlighted a stable community structure with Proteobacteria and Bacteroidota driving ammonium assimilation. The synergistic effect of fermentation bacteria, denitrifying glycogen-accumulating organisms, and denitrifying phosphorus-accumulating organisms contributed to the stability of nitrogen and phosphorus removal. This approach offers a promising method for sustainable nutrient management in sewage treatment.
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Affiliation(s)
- Guanglin Zhang
- School of Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Weiguang Li
- School of Environment, Harbin Institute of Technology, Harbin, 150090, China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China.
| | - Donghui Li
- School of Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Shuncai Wang
- School of Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Longyi Lv
- Tianjin Key Laboratory of Clean Energy and Pollution Control, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, 300401, China.
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Chen Z, Yang S, Zhang L, Duan F. Degradative solvent extraction of cyanobacteria: From reaction kinetics to potential organic matter evolution mechanism. BIORESOURCE TECHNOLOGY 2023; 386:129547. [PMID: 37488019 DOI: 10.1016/j.biortech.2023.129547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 07/20/2023] [Accepted: 07/21/2023] [Indexed: 07/26/2023]
Abstract
This study proposed a new continuous lumped reaction kinetics model to accurately reveal the control mechanism of cyanobacteria at each stage of degradative solvent extraction and discussed the potential evolution mechanism of organic matter. Results showed that degradation solvent extraction successfully separated nitrogen and phosphorus from cyanobacteria. The solute has high carbon and volatile contents, is almost ash-free, and forms a phosphorus-rich residue. The lowest fitting degree of the continuous lumped reaction model kinetics was 94.5%, suggesting that this model worked well. The depolymerization of the residue dominated between 200 and 350 °C, whereas solute decomposition dominated at 400 °C. Nitrogen-containing compounds, which originate from protein decarboxylation or deamination to generate amides, are the main components of the solute, and amino acids react with reducing sugars to generate nitrogen heterocyclic compounds, which are useful for preparing nitrogen-containing chemicals.
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Affiliation(s)
- Zongqi Chen
- Engineering Technology-Research Center of Anhui Education Department for Energy Saving and Pollutant Control in Metallurgical Process, School of Energy and Environment, Anhui University of Technology, Maanshan 243002, Anhui Province, PR China
| | - Shoumeng Yang
- Engineering Technology-Research Center of Anhui Education Department for Energy Saving and Pollutant Control in Metallurgical Process, School of Energy and Environment, Anhui University of Technology, Maanshan 243002, Anhui Province, PR China
| | - Lihui Zhang
- Engineering Technology-Research Center of Anhui Education Department for Energy Saving and Pollutant Control in Metallurgical Process, School of Energy and Environment, Anhui University of Technology, Maanshan 243002, Anhui Province, PR China.
| | - Feng Duan
- Engineering Technology-Research Center of Anhui Education Department for Energy Saving and Pollutant Control in Metallurgical Process, School of Energy and Environment, Anhui University of Technology, Maanshan 243002, Anhui Province, PR China
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