Pub Date : 2025-03-10DOI: 10.1016/j.jwpe.2025.107437
Peng Zhang , Yang Wang , Wei Peng , Jing Miao , Guohong Ren , Yihong Li , Pengju Zhang , Xin Zhao
LT ash, a byproduct of dry dust removal in converter gas purification, poses environmental challenges and opportunities for value-added utilization. This study reports the synthesis of a composite catalyst (LT@BC-800) via mixed co-pyrolysis of corncob powder with LT ash, yielding a mesoporous structure. When employed as an activator for peroxymonosulfate (PMS), LT@BC-800 exhibited superior tetracycline (TC) degradation efficiency (92.81 %) and rate constant (0.059 min−1) compared to raw LT ash (69.96 %, 0.029 min−1). Systematic characterization results display that the LT@BC-800 possesses high BET surface area, enhanced conductivity, and facilitated redox cycling of iron species, all of which effectively improve its PMS activation performance. Mechanistic investigations, including quenching experiments, EPR and electrochemical tests, confirm the involvement of both radical (, , ) and non-radical (1O2, direct electron transfer) pathways in TC degradation, with Fe species, defect sites, and CO groups serving as crucial activation centers for PMS. LC-MS coupled with DFT calculations elucidated potential TC degradation routes, while T.E.S.T. software indicated a substantial reduction in intermediate toxicity. Overall, this work paved the way for sustainable LT ash valorization and the development of potent, stable advanced oxidation process catalysts for water remediation applications.
{"title":"Enhancing peroxymonosulfate activation for tetracycline degradation using metallurgical iron-containing solid waste: A novel and straightforward high-value utilization process of LT ash","authors":"Peng Zhang , Yang Wang , Wei Peng , Jing Miao , Guohong Ren , Yihong Li , Pengju Zhang , Xin Zhao","doi":"10.1016/j.jwpe.2025.107437","DOIUrl":"10.1016/j.jwpe.2025.107437","url":null,"abstract":"<div><div>LT ash, a byproduct of dry dust removal in converter gas purification, poses environmental challenges and opportunities for value-added utilization. This study reports the synthesis of a composite catalyst (LT@BC-800) via mixed co-pyrolysis of corncob powder with LT ash, yielding a mesoporous structure. When employed as an activator for peroxymonosulfate (PMS), LT@BC-800 exhibited superior tetracycline (TC) degradation efficiency (92.81 %) and rate constant (0.059 min<sup>−1</sup>) compared to raw LT ash (69.96 %, 0.029 min<sup>−1</sup>). Systematic characterization results display that the LT@BC-800 possesses high BET surface area, enhanced conductivity, and facilitated redox cycling of iron species, all of which effectively improve its PMS activation performance. Mechanistic investigations, including quenching experiments, EPR and electrochemical tests, confirm the involvement of both radical (<span><math><msup><mi>HO</mi><mo>.</mo></msup></math></span>, <span><math><msubsup><mi>SO</mi><mn>4</mn><mrow><mo>∙</mo><mo>−</mo></mrow></msubsup></math></span>, <span><math><msubsup><mi>O</mi><mn>2</mn><mrow><mo>∙</mo><mo>−</mo></mrow></msubsup></math></span>) and non-radical (<sup>1</sup>O<sub>2</sub>, direct electron transfer) pathways in TC degradation, with Fe species, defect sites, and C<img>O groups serving as crucial activation centers for PMS. LC-MS coupled with DFT calculations elucidated potential TC degradation routes, while T.E.S.T. software indicated a substantial reduction in intermediate toxicity. Overall, this work paved the way for sustainable LT ash valorization and the development of potent, stable advanced oxidation process catalysts for water remediation applications.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"72 ","pages":"Article 107437"},"PeriodicalIF":6.3,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143578583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The elimination of antibiotic contaminants from water resources is essential due to their potential environmental impact and wildlife endangerment. Recently, metal-organic frameworks (MOFs) stand out as highly promising candidates for adsorption applications. Herein, highly porous aluminum fumarate (AlFu)C@700 °C MOF was successfully synthesized using hydrothermal technique followed by calcination to eliminate tetracycline (TC) from the aqueous solution. The impact of AlFu loading and calcination temperature on its TC removal efficiency was investigated. Subsequently, the AlFu was comprehensively characterized by Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and Brunauer–Emmett–Teller (BET) analyses. Under optimal conditions of 0.8 g/L AlFu loading, 30 mg/L TC concentration, pH of 7 and contact time of 40 min, 97 % of TC was removed from aqueous solutions. The adsorption results fitted perfectly to the Langmuir isotherm with the maximum adsorption capacity of 406.5 mg/g, and the adsorption kinetics were completely aligned by a pseudo-second-order model. The thermodynamic study demonstrated that the adsorption process is spontaneous and endothermic. Moreover, the reusability study revealed the (AlFu)C@700 °C could maintain its TC removal efficiency at over 60 % even after six cycles, highlighting its practical potential for antibiotic removal.
{"title":"Removal of tetracycline from aqueous solution by aluminum fumarate: Preparation, characteristic, adsorption performance and mechanism","authors":"Zahra Liravi , Mojtaba Binazadeh , Samad Sabbaghi , Rouhollah Azhdari , Seyyed Mojtaba Mousavi","doi":"10.1016/j.jwpe.2025.107429","DOIUrl":"10.1016/j.jwpe.2025.107429","url":null,"abstract":"<div><div>The elimination of antibiotic contaminants from water resources is essential due to their potential environmental impact and wildlife endangerment. Recently, metal-organic frameworks (MOFs) stand out as highly promising candidates for adsorption applications. Herein, highly porous aluminum fumarate (AlFu)<sub>C</sub>@700 °C MOF was successfully synthesized using hydrothermal technique followed by calcination to eliminate tetracycline (TC) from the aqueous solution. The impact of AlFu loading and calcination temperature on its TC removal efficiency was investigated. Subsequently, the AlFu was comprehensively characterized by Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and Brunauer–Emmett–Teller (BET) analyses. Under optimal conditions of 0.8 g/L AlFu loading, 30 mg/L TC concentration, pH of 7 and contact time of 40 min, 97 % of TC was removed from aqueous solutions. The adsorption results fitted perfectly to the Langmuir isotherm with the maximum adsorption capacity of 406.5 mg/g, and the adsorption kinetics were completely aligned by a pseudo-second-order model. The thermodynamic study demonstrated that the adsorption process is spontaneous and endothermic. Moreover, the reusability study revealed the (AlFu)<sub>C</sub>@700 °C could maintain its TC removal efficiency at over 60 % even after six cycles, highlighting its practical potential for antibiotic removal.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"72 ","pages":"Article 107429"},"PeriodicalIF":6.3,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143578665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-10DOI: 10.1016/j.jwpe.2025.107406
Haoxing Hu , Bingzheng Wang , Jiali Fang , Ziheng Feng , Huiyun Zhong , Ji Li
Sulfur-driven autotrophic denitrification (SAD) has been widely applied for treating low C/N wastewater. However, it faces issues like high alkalinity consumption and poor phosphorus removal. Steel slag, an industrial waste characterized by high alkalinity, high hardness and large specific surface area, has the potential to combine with the SAD process to enhance the removal efficiency of nitrogen and phosphorus. In this study, a steel slag/sulfur-based autotrophic denitrification (SS-SAD) reactor with different sulfur/steel slag ratios was set up to investigate the effects of steel slag on the nitrogen and phosphorus removal. The addition of steel slag significantly enhanced the nitrogen and phosphorus removal performance of the SAD process. The average NO3−-N removal efficiency of the SS-SAD reactor remained at over 99.0 % and the removal efficiency of PO43−-P could reach up to 85.2 %. The addition of steel slag promoted the secretion of extracellular polymeric substances, which was 34.2–51.3 mg/g VSS and the ratio of protein to polysaccharide was 6.0–18.9. The activity of relevant functional enzymes, nitrate reductase, nitrite reductase and sulfur oxidase, was also enhanced, which was 2.7–3.7, 0.8–1.1 and 3.3–5.4 U/g VSS, respectively. Autotrophic denitrifying bacteria, such as Ferritrophicum and Thiobacillus, could be effectively enriched after the addition of steel slag.
{"title":"Steel slag enhanced simultaneous nitrogen and phosphorus removal from low C/N wastewater by sulfur-driven autotrophic denitrification","authors":"Haoxing Hu , Bingzheng Wang , Jiali Fang , Ziheng Feng , Huiyun Zhong , Ji Li","doi":"10.1016/j.jwpe.2025.107406","DOIUrl":"10.1016/j.jwpe.2025.107406","url":null,"abstract":"<div><div>Sulfur-driven autotrophic denitrification (SAD) has been widely applied for treating low C/N wastewater. However, it faces issues like high alkalinity consumption and poor phosphorus removal. Steel slag, an industrial waste characterized by high alkalinity, high hardness and large specific surface area, has the potential to combine with the SAD process to enhance the removal efficiency of nitrogen and phosphorus. In this study, a steel slag/sulfur-based autotrophic denitrification (SS-SAD) reactor with different sulfur/steel slag ratios was set up to investigate the effects of steel slag on the nitrogen and phosphorus removal. The addition of steel slag significantly enhanced the nitrogen and phosphorus removal performance of the SAD process. The average NO<sub>3</sub><sup>−</sup>-N removal efficiency of the SS-SAD reactor remained at over 99.0 % and the removal efficiency of PO<sub>4</sub><sup>3−</sup>-P could reach up to 85.2 %. The addition of steel slag promoted the secretion of extracellular polymeric substances, which was 34.2–51.3 mg/g VSS and the ratio of protein to polysaccharide was 6.0–18.9. The activity of relevant functional enzymes, nitrate reductase, nitrite reductase and sulfur oxidase, was also enhanced, which was 2.7–3.7, 0.8–1.1 and 3.3–5.4 U/g VSS, respectively. Autotrophic denitrifying bacteria, such as <em>Ferritrophicum</em> and <em>Thiobacillus</em>, could be effectively enriched after the addition of steel slag.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"72 ","pages":"Article 107406"},"PeriodicalIF":6.3,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143593537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-10DOI: 10.1016/j.jwpe.2025.107428
Wen-bo Liang , Yi-Fan Liu , Xiao-Li Yang , Hai-liang Song
Exogenous pollution contributes to river eutrophication and sediment deterioration, posing a global challenge. Traditional solutions, such as artificial aeration and submerged plants, often face efficiency and adaptability limitations. Micro/nano aeration (MA) technology, generating bubbles smaller than 1 μm with higher oxygen transfer efficiency than conventional aeration, has emerged as a promising alternative. In addition, this technology has been demonstrated to promote plant growth and increase microbial abundance. This study integrated MA with submerged plants to enhance pollutant interception and sediment restoration. High-frequency MA (1 h aeration every 2 days) facilitated rapid water quality stabilization, achieving stability within 20 days in L-MA1 and 34 days in H-MA1. During the stable period, the average removal efficiencies of COD, NH₄+-N, and TP were 51.83 %, 86.02 %, and 40.36 % in L-MA1, and 56.37 %, 92.74 %, and 57.54 % in H-MA1, respectively. These removal efficiencies were consistently higher than those observed in the control and conventional aeration groups. MA also reduced sediment OM, TN, and TP by over 50 %. The findings of the plant experiments demonstrated that Vallisneria natans and Elodea nuttallii exhibited robust growth in the MA input, with biomass levels being twice as high as those observed in CK group, standard nitrogen metabolism, and a certain degree of antioxidant capacity. Furthermore, MA altered microbial communities, increasing Chloroflexi while reducing Proteobacteria and Bacteroidota. Pseudomonas, a key heterotrophic nitrification-aerobic denitrification bacterium, facilitated simultaneous NH₄+-N and NO₃−-N removal. These findings suggest that MA, combined with submerged plants, provides an efficient approach for exogenous pollution control and sediment restoration.
{"title":"Study on the performance of micro/nano-aeration and submerged plants against exogenous pollution","authors":"Wen-bo Liang , Yi-Fan Liu , Xiao-Li Yang , Hai-liang Song","doi":"10.1016/j.jwpe.2025.107428","DOIUrl":"10.1016/j.jwpe.2025.107428","url":null,"abstract":"<div><div>Exogenous pollution contributes to river eutrophication and sediment deterioration, posing a global challenge. Traditional solutions, such as artificial aeration and submerged plants, often face efficiency and adaptability limitations. Micro/nano aeration (MA) technology, generating bubbles smaller than 1 μm with higher oxygen transfer efficiency than conventional aeration, has emerged as a promising alternative. In addition, this technology has been demonstrated to promote plant growth and increase microbial abundance. This study integrated MA with submerged plants to enhance pollutant interception and sediment restoration. High-frequency MA (1 h aeration every 2 days) facilitated rapid water quality stabilization, achieving stability within 20 days in L-MA1 and 34 days in H-MA1. During the stable period, the average removal efficiencies of COD, NH₄<sup>+</sup>-N, and TP were 51.83 %, 86.02 %, and 40.36 % in L-MA1, and 56.37 %, 92.74 %, and 57.54 % in H-MA1, respectively. These removal efficiencies were consistently higher than those observed in the control and conventional aeration groups. MA also reduced sediment OM, TN, and TP by over 50 %. The findings of the plant experiments demonstrated that <em>Vallisneria natans</em> and <em>Elodea nuttallii</em> exhibited robust growth in the MA input, with biomass levels being twice as high as those observed in CK group, standard nitrogen metabolism, and a certain degree of antioxidant capacity. Furthermore, MA altered microbial communities, increasing Chloroflexi while reducing Proteobacteria and Bacteroidota. <em>Pseudomonas</em>, a key heterotrophic nitrification-aerobic denitrification bacterium, facilitated simultaneous NH₄<sup>+</sup>-N and NO₃<sup>−</sup>-N removal. These findings suggest that MA, combined with submerged plants, provides an efficient approach for exogenous pollution control and sediment restoration.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"72 ","pages":"Article 107428"},"PeriodicalIF":6.3,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143578581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-10DOI: 10.1016/j.jwpe.2025.107433
Liuyi Yin , Yongbo Li , Yufeng Hu , Jun Wang , Yingying Xue , Weifan Duan , Yumeng He , Shuang Tang , Tingting Fu
To reduce the energy consumption and the total annual cost (TAC) of the conventional extractive distillation (CED) process, this study focuses on the process intensification by the combination of salt-based DESs entrainers, partial heat-integrated and intermediate reboilers for 2-propanol + water separation process. The vapor-liquid equilibrium experiments showed that (ChCl:U:CaCl2)1:2:0.36 is the most promising for the separation of 2-propanol and water among all of the entrainers investigated. Based on the thermodynamic study, the conceptual process design for CED was created to examine the competitiveness of the recommended entrainer in separating 2-propanol and water. When compared to the entrainer glycerol, the CED process using (ChCl:U:CaCl2)1:2:0.36 entrainer can reduce the total annual cost (TAC) by about 69.54 %, the total energy consumption (TEC) by 70.66 % and the CO2 emissions (ECO2) by 67.92 %. To achieve the further energy saving, partial heat-integrated (PHI) scheme and partial heat-integrated combined with intermediate reboilers (PHI-IR) scheme are researched based on the CED process. For the most energy saving design, PHI-IR, it has 74.61 % thermodynamic efficiency enhanced, 72.79 % energy-saving, 70.25 % reduction in total annual cost (TAC) and 74.47 % reduction in CO2 emissions with the comparison of the CED process using glycerol entrainer. The results show that the PHI-IR scheme is energy-efficient, economical, and environmentally friendly for separating 2-propanol and water mixtures, with great industrial application potential.
{"title":"Energy-saving extractive distillation using salt-based DESs as an entrainer for separating 2-propanol and water mixture","authors":"Liuyi Yin , Yongbo Li , Yufeng Hu , Jun Wang , Yingying Xue , Weifan Duan , Yumeng He , Shuang Tang , Tingting Fu","doi":"10.1016/j.jwpe.2025.107433","DOIUrl":"10.1016/j.jwpe.2025.107433","url":null,"abstract":"<div><div>To reduce the energy consumption and the total annual cost (TAC) of the conventional extractive distillation (CED) process, this study focuses on the process intensification by the combination of salt-based DESs entrainers, partial heat-integrated and intermediate reboilers for 2-propanol + water separation process. The vapor-liquid equilibrium experiments showed that (ChCl:U:CaCl<sub>2</sub>)<sub>1:2:0.36</sub> is the most promising for the separation of 2-propanol and water among all of the entrainers investigated. Based on the thermodynamic study, the conceptual process design for CED was created to examine the competitiveness of the recommended entrainer in separating 2-propanol and water. When compared to the entrainer glycerol, the CED process using (ChCl:U:CaCl<sub>2</sub>)<sub>1:2:0.36</sub> entrainer can reduce the total annual cost (TAC) by about 69.54 %, the total energy consumption (TEC) by 70.66 % and the CO<sub>2</sub> emissions (<em>E</em><sub>CO2</sub>) by 67.92 %. To achieve the further energy saving, partial heat-integrated (PHI) scheme and partial heat-integrated combined with intermediate reboilers (PHI-IR) scheme are researched based on the CED process. For the most energy saving design, PHI-IR, it has 74.61 % thermodynamic efficiency enhanced, 72.79 % energy-saving, 70.25 % reduction in total annual cost (TAC) and 74.47 % reduction in CO<sub>2</sub> emissions with the comparison of the CED process using glycerol entrainer. The results show that the PHI-IR scheme is energy-efficient, economical, and environmentally friendly for separating 2-propanol and water mixtures, with great industrial application potential.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"72 ","pages":"Article 107433"},"PeriodicalIF":6.3,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143578664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-10DOI: 10.1016/j.jwpe.2025.107432
Huaqing Liu , Qingyu Xia , Jian Zhang , Yanlong Wang , Chongyang Ren , Xinhan Chen , Dongle Cheng , Guang Yang
The detection of substrate clogging is crucial for the sustainable operation of treatment wetlands. Electrical resistivity methods have shown promise for non-destructive detection of clogging, but their effectiveness in identifying different types of clogging has not been identified. This study explores the feasibility of using the resistivity method to detect organic-dominated, inorganic-dominated, and combined organic-inorganic clogging during the drainage phase of vertical flow treatment wetlands. Results reveal that the amount of clogging matter accumulation and the corresponding hydraulic resistance follow the order: combined organic-inorganic > organic-dominated > inorganic-dominated clogging. Organic clogging matter generates greater hydraulic resistance than inorganic matter for the same mass, whereas hydraulic resistance does not correlate consistently with the water flow regime. The study establishes a direct link between the hydraulic effects of different types clogging matters and their corresponding conductivity. Linear regression analysis shows moderate positive correlations for total solids (R2 = 0.56) and a stronger positive relationship for volatile solids (R2 = 0.81) with conductivity. Additionally, conductivity is negatively correlated with substrate permeability (R2 = 0.93). The conductivity of the wetland substrate under drained conditions is influenced by its water retention capacity, which is closely related to the hydraulic resistance of the clogging matter. This study introduces a non-destructive method to identify both organic and inorganic clogging and assess their impact on substrate hydraulic permeability. The application of this method enables real-time, non-invasive assessment of substrate clogging distribution and severity in wetland systems, enhancing the ability to effectively monitor and maintain wetland performance.
{"title":"Effectiveness of the resistivity method for non-destructive detection of organic and inorganic substrate clogging in treatment wetlands","authors":"Huaqing Liu , Qingyu Xia , Jian Zhang , Yanlong Wang , Chongyang Ren , Xinhan Chen , Dongle Cheng , Guang Yang","doi":"10.1016/j.jwpe.2025.107432","DOIUrl":"10.1016/j.jwpe.2025.107432","url":null,"abstract":"<div><div>The detection of substrate clogging is crucial for the sustainable operation of treatment wetlands. Electrical resistivity methods have shown promise for non-destructive detection of clogging, but their effectiveness in identifying different types of clogging has not been identified. This study explores the feasibility of using the resistivity method to detect organic-dominated, inorganic-dominated, and combined organic-inorganic clogging during the drainage phase of vertical flow treatment wetlands. Results reveal that the amount of clogging matter accumulation and the corresponding hydraulic resistance follow the order: combined organic-inorganic > organic-dominated > inorganic-dominated clogging. Organic clogging matter generates greater hydraulic resistance than inorganic matter for the same mass, whereas hydraulic resistance does not correlate consistently with the water flow regime. The study establishes a direct link between the hydraulic effects of different types clogging matters and their corresponding conductivity. Linear regression analysis shows moderate positive correlations for total solids (R<sup>2</sup> = 0.56) and a stronger positive relationship for volatile solids (R<sup>2</sup> = 0.81) with conductivity. Additionally, conductivity is negatively correlated with substrate permeability (R<sup>2</sup> = 0.93). The conductivity of the wetland substrate under drained conditions is influenced by its water retention capacity, which is closely related to the hydraulic resistance of the clogging matter. This study introduces a non-destructive method to identify both organic and inorganic clogging and assess their impact on substrate hydraulic permeability. The application of this method enables real-time, non-invasive assessment of substrate clogging distribution and severity in wetland systems, enhancing the ability to effectively monitor and maintain wetland performance.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"72 ","pages":"Article 107432"},"PeriodicalIF":6.3,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143578667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-10DOI: 10.1016/j.jwpe.2025.107426
Linlin Huang , Xuwen Zhang , Lin Wang , Tingting Liu , Da Li , Tao Sheng , Caiyu Sun , Lixin Li
In this study, nitrogen-doped carbon material (N-PC-d) derived from coal tar pitch using dicyandiamide as N source was successfully synthesized, exhibiting outstanding catalytic performance in the activation of peroxymonosulfate (PMS) for the degradation of Orange G (OG). By optimizing key parameters such as PMS dosage, N-PC dosage, nitrogen source, pH, anions, and PS source, the optimal N-PC-d/PMS system achieved a degradation rate 1.45 times higher than that of the PC/PMS system within a broad pH range (2.0–10.0). Through electron paramagnetic resonance (EPR) and quenching experiments, it was found that singlet oxygen (1O2) was the predominant species accountable for OG degradation, while reactive oxygen species (ROS), including superoxide (O2·-), hydroxyl radicals (·OH), and sulfate radicals (SO4·-), played auxiliary roles. Moreover, the structure–activity relationship analysis revealed that functional groups such as CC, CO, and pyridine N were mainly involved in PMS activation. The degradation mechanism of OG was further elucidated by high-performance liquid chromatography-mass spectrometry (HPLC-MS). This research presented a cost-efficient N-doped porous carbon material for environmental remediation and provides more profound insights into the mechanisms of PMS activation by N doped carbon-based materials.
{"title":"Boosting catalytic performance of N doped porous carbon derived from coal tar pitch: The role of N species and the contribution of 1O2","authors":"Linlin Huang , Xuwen Zhang , Lin Wang , Tingting Liu , Da Li , Tao Sheng , Caiyu Sun , Lixin Li","doi":"10.1016/j.jwpe.2025.107426","DOIUrl":"10.1016/j.jwpe.2025.107426","url":null,"abstract":"<div><div>In this study, nitrogen-doped carbon material (N-PC-d) derived from coal tar pitch using dicyandiamide as N source was successfully synthesized, exhibiting outstanding catalytic performance in the activation of peroxymonosulfate (PMS) for the degradation of Orange G (OG). By optimizing key parameters such as PMS dosage, N-PC dosage, nitrogen source, pH, anions, and PS source, the optimal N-PC-d/PMS system achieved a degradation rate 1.45 times higher than that of the PC/PMS system within a broad pH range (2.0–10.0). Through electron paramagnetic resonance (EPR) and quenching experiments, it was found that singlet oxygen (<sup>1</sup>O<sub>2</sub>) was the predominant species accountable for OG degradation, while reactive oxygen species (ROS), including superoxide (O<sub>2</sub><sup>·-</sup>), hydroxyl radicals (·OH), and sulfate radicals (SO<sub>4</sub><sup>·-</sup>), played auxiliary roles. Moreover, the structure–activity relationship analysis revealed that functional groups such as C<img>C, C<img>O, and pyridine N were mainly involved in PMS activation. The degradation mechanism of OG was further elucidated by high-performance liquid chromatography-mass spectrometry (HPLC-MS). This research presented a cost-efficient N-doped porous carbon material for environmental remediation and provides more profound insights into the mechanisms of PMS activation by N doped carbon-based materials.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"72 ","pages":"Article 107426"},"PeriodicalIF":6.3,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143593536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-10DOI: 10.1016/j.jwpe.2025.107444
Nannan Wang , Ye Yang , Kai Wang , Yiqi Liu , Xu Liu , Zishan Hou , Siquan Zou , Xiangyu Liu , Wenhui Zou , Peng Wang
Heterogeneous Fenton-like catalysts (HFC) are the core of the heterogeneous Fenton-like oxidation processes in the treatment of organic wastewater. In recent years, although the catalytic performance of HFC has shown a significant improvement, there is still potential in the improvement of the catalytic performance of HFC across a wide pH range. This review discusses a series of critical aspects of HFC to provide a comprehensive and critical insight into HFC. Firstly, six typical preparation methods of HFC (sol-gel method, hydrothermal and solvothermal method, impregnation method, deposition precipitation, solution combustion, and electrostatic spinning) and six important physicochemical property analysis methods of HFC (SEM, TEM, XRD, XPS, FTIR, and ESR) are summarized, followed by a discussion of working mechanisms and a systematic introduction of five types of HFC (zero-valent metal HFC, transition metal oxide HFC, metal species-supported HFC, metal ion in-situ doped HFC, and metal-free HFC). Subsequently, the lifecycle (always in the range of 3–10 runs) and relevant cost of HFC are summarized and five typical improvement methods (metal modification, carbon modification, g-C3N4 modification, sulphur doping, and generation of double reaction centre) for HFC are presented according to the shortcomings of HFC. Finally, six potential study directions involving HFC in the near future are proposed.
{"title":"A comprehensive review on heterogeneous Fenton-like catalyst for the oxidation degradation of organics in wastewater","authors":"Nannan Wang , Ye Yang , Kai Wang , Yiqi Liu , Xu Liu , Zishan Hou , Siquan Zou , Xiangyu Liu , Wenhui Zou , Peng Wang","doi":"10.1016/j.jwpe.2025.107444","DOIUrl":"10.1016/j.jwpe.2025.107444","url":null,"abstract":"<div><div>Heterogeneous Fenton-like catalysts (HFC) are the core of the heterogeneous Fenton-like oxidation processes in the treatment of organic wastewater. In recent years, although the catalytic performance of HFC has shown a significant improvement, there is still potential in the improvement of the catalytic performance of HFC across a wide pH range. This review discusses a series of critical aspects of HFC to provide a comprehensive and critical insight into HFC. Firstly, six typical preparation methods of HFC (sol-gel method, hydrothermal and solvothermal method, impregnation method, deposition precipitation, solution combustion, and electrostatic spinning) and six important physicochemical property analysis methods of HFC (SEM, TEM, XRD, XPS, FTIR, and ESR) are summarized, followed by a discussion of working mechanisms and a systematic introduction of five types of HFC (zero-valent metal HFC, transition metal oxide HFC, metal species-supported HFC, metal ion in-situ doped HFC, and metal-free HFC). Subsequently, the lifecycle (always in the range of 3–10 runs) and relevant cost of HFC are summarized and five typical improvement methods (metal modification, carbon modification, g-C<sub>3</sub>N<sub>4</sub> modification, sulphur doping, and generation of double reaction centre) for HFC are presented according to the shortcomings of HFC. Finally, six potential study directions involving HFC in the near future are proposed.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"72 ","pages":"Article 107444"},"PeriodicalIF":6.3,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143578666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-10DOI: 10.1016/j.jwpe.2025.107430
Rui Xiao , Erika Carter , Austin Allen , Pei-Lin Tan , Yu-Hua Zheng , Qian Chen , Shun-Ni Zhu , Sudeep C. Popat , Allan Knopf , Clinton F. Williams , Howard H. Chou , Huan Chen
Large-scale farms with concentrated animal feeding operations generate significant volumes of dairy livestock wastewater (LWW) that are rich in nutrients and salinity, and its improper management can quickly deteriorate natural environments. Here, we cultivated two microalgae, Chlorella protothecoides and Chlamydomonas reinhardtii, in filtered dairy LWW to achieve nutrient recovery from high-salinity dairy wastewater. Under 1000–7000 lux using 25–100 % LWW, we observed high removal of 86.8–95.3 % dissolved total nitrogen, 75.5–92.0 % dissolved organic nitrogen, 98.3–99.8 % NH₄+-N, and 57.2–100 % total phosphorus, with moderate removal of 12.1–67.5 % for dissolved organic carbon and 2.49–33.4 % for total 19 metal(loid)s. Notably, the aromaticity of LWW dramatically reduced under higher light intensity and low rainwater dilution levels, while organic nitrogen utilization was markedly enhanced when light intensity exceeded 3000 lux. We found the highest values of 5.33–6.52 g/L for biomass yields, 37.9–42.0 % for protein contents, and 22.2–27.6 % for lipid contents. Total fatty acids (TFAs) contained 89.5–100 % C16-C18, predominantly C16:0, C18:1, and C18:2. Lipid accumulation was significantly enhanced under higher light intensities, though C. reinhardtii exhibited a greater sensitivity to higher LWW proportions compared to C. protothecoides, which favored lower rainwater dilution levels for increased TFA accumulation. Our study indicated that these two microalgae, when cultivated in filtered dairy LWW rich in nutrients and salinity, are promising feedstock candidates for biodiesel production.
{"title":"Nutrient recovery from high-salinity dairy wastewater through the cultivation of acclimatized microalgae","authors":"Rui Xiao , Erika Carter , Austin Allen , Pei-Lin Tan , Yu-Hua Zheng , Qian Chen , Shun-Ni Zhu , Sudeep C. Popat , Allan Knopf , Clinton F. Williams , Howard H. Chou , Huan Chen","doi":"10.1016/j.jwpe.2025.107430","DOIUrl":"10.1016/j.jwpe.2025.107430","url":null,"abstract":"<div><div>Large-scale farms with concentrated animal feeding operations generate significant volumes of dairy livestock wastewater (LWW) that are rich in nutrients and salinity, and its improper management can quickly deteriorate natural environments. Here, we cultivated two microalgae, <em>Chlorella protothecoides</em> and <em>Chlamydomonas reinhardtii</em>, in filtered dairy LWW to achieve nutrient recovery from high-salinity dairy wastewater. Under 1000–7000 lux using 25–100 % LWW, we observed high removal of 86.8–95.3 % dissolved total nitrogen, 75.5–92.0 % dissolved organic nitrogen, 98.3–99.8 % NH₄<sup>+</sup>-N, and 57.2–100 % total phosphorus, with moderate removal of 12.1–67.5 % for dissolved organic carbon and 2.49–33.4 % for total 19 metal(loid)s. Notably, the aromaticity of LWW dramatically reduced under higher light intensity and low rainwater dilution levels, while organic nitrogen utilization was markedly enhanced when light intensity exceeded 3000 lux. We found the highest values of 5.33–6.52 g/L for biomass yields, 37.9–42.0 % for protein contents, and 22.2–27.6 % for lipid contents. Total fatty acids (TFAs) contained 89.5–100 % C16-C18, predominantly C16:0, C18:1, and C18:2. Lipid accumulation was significantly enhanced under higher light intensities, though <em>C. reinhardtii</em> exhibited a greater sensitivity to higher LWW proportions compared to <em>C. protothecoides</em>, which favored lower rainwater dilution levels for increased TFA accumulation. Our study indicated that these two microalgae, when cultivated in filtered dairy LWW rich in nutrients and salinity, are promising feedstock candidates for biodiesel production.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"72 ","pages":"Article 107430"},"PeriodicalIF":6.3,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143593535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-15DOI: 10.1016/j.jwpe.2025.107192
Ángel Eduardo Rodríguez-Olivares , Jorge Luis Guzmán-Mar , Pedro César Quero-Jiménez , Sagrario M. Montemayor , Lourdes Maya-Treviño , Laura Hinojosa-Reyes
Nylon 6 microplastic (MP) degradation was performed for the first time by photocatalysis using HKUST-1(Cu/Fe)-derived CuO/TiO2 (TCFH). The TCFH composites with 5, 10, and 15 wt % of HKUST-1(Cu/Fe) were synthesized using the solvothermal method, followed by calcination, and deposited on borosilicate glass. The prepared materials were analyzed using TGA/DSC, UV–Vis/DRS, PL spectroscopy, XRD, XPS, FTIR, N2 physisorption, and SEM-EDS techniques to confirm their crystallinity, chemical bonding, porosity, thermal, optical, and morphological properties. With an increase in HKUST-1(Cu/Fe) content in TiO2, the crystallite size, surface area, and pore size increased, whereas the bandgap energy and the recombination rate of photogenerated e−/h+ pairs decreased compared to TiO2, favoring nylon 6 MP degradation. The TCFH (15 wt %) displayed optimal MP degradation performance, degrading MPs at pH 7 under UV–Vis light, showing an increase in TOC content during MP degradation (11.42 mg L−1), related to the presence of soluble by-products, a decrease in turbidity associated with the reduction in particle size and MP concentration, and a decrease in amide signal intensity at 3090 cm−1 compared with values observed during photolysis and TiO2 photocatalysis. SEM and XPS analyses confirmed the oxidation and breakage of the MP polymeric chain. Soluble organic compounds such as aldehydes, amides, and carboxylic acids generated during MP degradation were detected by GC–MS. Thus, photocatalysis using the bimetallic MOF HKUST-1(Cu/Fe)-derived CuO/TiO2 is a promising treatment for eliminating polyamide MPs in water effluents, where reactive oxygen species (•OH and O2−) contribute to their degradation.
{"title":"Analytical approaches to track nylon 6 microplastic fiber degradation using HKUST-1(Cu/Fe)-derived CuO/TiO2 photocatalyst","authors":"Ángel Eduardo Rodríguez-Olivares , Jorge Luis Guzmán-Mar , Pedro César Quero-Jiménez , Sagrario M. Montemayor , Lourdes Maya-Treviño , Laura Hinojosa-Reyes","doi":"10.1016/j.jwpe.2025.107192","DOIUrl":"10.1016/j.jwpe.2025.107192","url":null,"abstract":"<div><div>Nylon 6 microplastic (MP) degradation was performed for the first time by photocatalysis using HKUST-1(Cu/Fe)-derived CuO/TiO<sub>2</sub> (TCFH). The TCFH composites with 5, 10, and 15 wt % of HKUST-1(Cu/Fe) were synthesized using the solvothermal method, followed by calcination, and deposited on borosilicate glass. The prepared materials were analyzed using TGA/DSC, UV–Vis/DRS, PL spectroscopy, XRD, XPS, FTIR, N<sub>2</sub> physisorption, and SEM-EDS techniques to confirm their crystallinity, chemical bonding, porosity, thermal, optical, and morphological properties. With an increase in HKUST-1(Cu/Fe) content in TiO<sub>2</sub>, the crystallite size, surface area, and pore size increased, whereas the bandgap energy and the recombination rate of photogenerated <em>e</em><sup><em>−</em></sup><em>/h</em><sup><em>+</em></sup> pairs decreased compared to TiO<sub>2</sub>, favoring nylon 6 MP degradation. The TCFH (15 wt %) displayed optimal MP degradation performance, degrading MPs at pH 7 under UV–Vis light, showing an increase in TOC content during MP degradation (11.42 mg L<sup>−1</sup>), related to the presence of soluble by-products, a decrease in turbidity associated with the reduction in particle size and MP concentration, and a decrease in amide signal intensity at 3090 cm<sup>−1</sup> compared with values observed during photolysis and TiO<sub>2</sub> photocatalysis. SEM and XPS analyses confirmed the oxidation and breakage of the MP polymeric chain. Soluble organic compounds such as aldehydes, amides, and carboxylic acids generated during MP degradation were detected by GC–MS. Thus, photocatalysis using the bimetallic MOF HKUST-1(Cu/Fe)-derived CuO/TiO<sub>2</sub> is a promising treatment for eliminating polyamide MPs in water effluents, where reactive oxygen species (<sup>•</sup>OH and O<sub>2</sub><img><sup>−</sup>) contribute to their degradation.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"71 ","pages":"Article 107192"},"PeriodicalIF":6.3,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143422246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
扫码关注我们
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号