Siling Luo, Jianping Ai, Yang Kuang, Li-Hong Cheng, Lixing Liang, Yi Wang, Hongzhan Dai, Quan Sun, Zehua Zhou, Wenkui Li
{"title":"Insight into the synergistic acceleration effects of EDTA and hydroxylamine in heterogeneous Fenton-like reaction over a wide initial pH range","authors":"Siling Luo, Jianping Ai, Yang Kuang, Li-Hong Cheng, Lixing Liang, Yi Wang, Hongzhan Dai, Quan Sun, Zehua Zhou, Wenkui Li","doi":"10.4491/eer.2025.008","DOIUrl":"https://doi.org/10.4491/eer.2025.008","url":null,"abstract":"Chelating agent modification and reductant enhancement are effective strategies to improve the narrow working pH and Fe3+/Fe2+ cycle delay of a heterogeneous Fenton system. However, the different mechanisms for the promotional effects between disodium ethylenediaminetetraacetate (EDTA) and hydroxylamine (HA) are rarely reported. Herein, the effects of EDTA and HA on the degradation kinetics of the selected probe compounds were compared in the CoFe2O4/H2O2 system for the first time. This paper found that the EDTA-chelated CoFe2O4 Fenton-like system enhanced the activation rate of H2O2 via reducing the redox potential of Fe2+/Fe3+ and Co2+/Co3+ pairs. The apparent rate constant of methyl orange (MO) in the CoFe2O4/H2O2/HA system was approximately 84-fold higher than that in the CoFe2O4/H2O2 system under the reaction conditions with 1.0 mM of HA and pH 6.4 within 180 min. This result was attributed to the dynamic equilibrium of Fe3+/Fe2+ and Co3+/Co2+ redox cycles after the addition of HA. Based on quenching experiments and electron paramagnetic resonance (EPR), these superior activities are due to the hydroxyl radicals (•OH) and singlet oxygen (1O2) under circumneutral pH, whereas •OH is the major reactive oxygen species (ROS) at pH values <4 or >10. The potential mechanism of CoFe2O4/H2O2/EDTA/HA systems was elucidated.","PeriodicalId":11704,"journal":{"name":"Environmental Engineering Research","volume":"31 1","pages":"250008-0"},"PeriodicalIF":0.0,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147889193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jian He, Gou Haobo, Geng Liyu, Shu Hao, Yuling Liu, Zhang Lei
{"title":"Formulated absorbent for fine desulfurization and carbon capture of blast furnace gas based on alcohol amine solution","authors":"Jian He, Gou Haobo, Geng Liyu, Shu Hao, Yuling Liu, Zhang Lei","doi":"10.4491/eer.2024.648","DOIUrl":"https://doi.org/10.4491/eer.2024.648","url":null,"abstract":"The development of deep desulfurization of blast furnace gas combined with carbon capture is the key implementation point of pollution reduction and carbon reduction in the steel industry. Combined with the current situation of immature deep desulfurization technology and urgent demand for carbon capture, a CO2/COS(carbon oxysulfide)/H2S integrated high-efficiency removal formula absorbent was designed and developed. The main conclusions of this paper are as follows: The absorbent system for simultaneous deep removal of CO2, H2S and COS from blast furnace gas was constructed, and the formula absorbent composed of 1.5 mol/L MDEA + 0.5 mol/L MEA + 6% MOR + 4% DBU + 3% DDBAC was obtained. The total sulfur in the purified gas is less than 20 mg/Nm³, with a CO2 capture efficiency greater than 90%, and the regeneration rate of the formulated absorbent is above 80%, exhibiting excellent anti-corrosion and thermal stability performance. This research lays the foundation for the practical implementation of collaborative pollution reduction and carbon reduction in the steel industry. It integrates the achievement of ultra-low emissions and carbon reduction, providing significant environmental and economic benefits, and demonstrates important practical value and research significance.","PeriodicalId":11704,"journal":{"name":"Environmental Engineering Research","volume":"30 5","pages":"240648-0"},"PeriodicalIF":0.0,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"http://www.eeer.org/upload/eer-2024-648.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147908604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zhanmei Zhang, Yunxuan Huang, Xilin Chen, Huaili Zheng, Xinyue Li
{"title":"In situ synthesis of Co-MOF@BC hybrid catalyst for enhanced BPA degradation via sulfite activation","authors":"Zhanmei Zhang, Yunxuan Huang, Xilin Chen, Huaili Zheng, Xinyue Li","doi":"10.4491/eer.2024.572","DOIUrl":"https://doi.org/10.4491/eer.2024.572","url":null,"abstract":"A novel synthesis approach was employed to prepare the Co-MOF@BC composite catalyst, utilizing CoCl2·6H2O, 2,5-dihydroxyterephthalic acid (DHTA), and N,N-dimethylformamide (DMF) for the in situ growth of metal-organic frameworks (MOFs) on a two-dimensional biochar (BC) substrate. The physicochemical properties of Co-MOF@BC were characterized using SEM, BET, XRD, FT-IR, and XPS. A heterogeneous catalytic system, Co-MOF@BC/PMS, was established for bisphenol A (BPA) removal. The optimal BPA removal efficiency reached 93.66% under the following conditions: BPA concentration of 10 mg∙L-1, Co-MOF@BC dosage of 100 mg∙L-1, PMS dosage of 0.20 mM, initial pH of 7.0, and reaction temperature of 20°C. The proposed degradation mechanism involves PMS-catalyzed radical pathways (SO•−4, •OH and O•−2) and non-radical pathways (1O2 oxidation and direct electron transfer), as supported by material characterization and degradation efficiency assessment. This study provides insights into MOFs modification and lays the foundation for developing efficient heterogeneous catalysts in sequential redox-acidic oxidation processes (SR-AOPs)","PeriodicalId":11704,"journal":{"name":"Environmental Engineering Research","volume":"30 5","pages":"240572-0"},"PeriodicalIF":0.0,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"http://www.eeer.org/upload/eer-2024-572.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147893694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jun He, Zhiwei Yang, Dongcai He, Xianchun Chen, Jing Zhang
{"title":"Piezo-activation of peroxydisulfate by BaTiO3 for metronidazole removal in water","authors":"Jun He, Zhiwei Yang, Dongcai He, Xianchun Chen, Jing Zhang","doi":"10.4491/eer.2024.538","DOIUrl":"https://doi.org/10.4491/eer.2024.538","url":null,"abstract":"In this research, a new system was created using piezoelectric catalytic activation of peroxydisulfate (PDS) to eliminate organic contaminants from water. Barium titanate (BaTiO3) nanoparticles were employed as a representative piezoelectric catalyst to activate PDS under ultrasonic (US) conditions for the degradation of metronidazole (MNZ) in water. In the BaTiO3/PDS/US system, a degradation rate of up to 92% for MNZ was attained within 30 minutes, representing an increase of 76% and 80% compared to the BaTiO3/PDS/stirring system and PDS/US system, respectively. A significant synergistic effect was observed, with the reaction rate constant of BaTiO3/PDS/US being six times higher than the sum of the rates of the other two processes. The potential activation mechanism was postulated through analysis of reactive species, ESR measurements, and DFT calculations, suggesting that the accumulation of local charges on the surface of BaTiO3 disrupted the peroxide bond (O-O) in PDS, leading to the continuous generation of ·SO4-, which further converted into ·OH, ·O2-, and 1O2. Among these species, 1O2 played a major role in the degradation of MNZ. Overall, the findings suggest that BaTiO3 piezoelectricity can effectively trigger PDS to improve MNZ elimination, introducing new possibilities for utilizing piezoelectric catalysis in wastewater treatment.","PeriodicalId":11704,"journal":{"name":"Environmental Engineering Research","volume":"30 5","pages":"240538-0"},"PeriodicalIF":0.0,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"http://www.eeer.org/upload/eer-2024-538.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147900889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Fabrication of nitrogen-doped MXene composite electrode for efficient removal of sulfadiazine in homogeneous electro-Fenton system","authors":"Huilai Liu, Zhihao Li, Defeng Kong, Xing Chen","doi":"10.4491/eer.2024.441","DOIUrl":"https://doi.org/10.4491/eer.2024.441","url":null,"abstract":"In this study, N-MXene-x (x denotes N loading) nanocomposites were successfully prepared by thermostatic ultrasonication and used as a cathode to construct a homogeneous electro-Fenton (EF) system for the degradation of sulphadiazine (SDZ). The characterization results that the electrocatalytic activity of the N-doped composites is significantly increased, which facilitates the two-electron oxygen reduction reaction (2e--ORR) and thus promotes the generation of hydrogen peroxide (H2O2) in the system. Experimental findings demonstrate that the N-MXene-3 cathode exhibits exceptional degradation performance for SDZ (97% removal in 60 min) during the homogeneous EF process. The catalytic oxidation mechanism of the N-MXene-3/EF system was explored by free radical quenching, electron paramagnetic resonance and frontier orbital theory studies, in which the main active substance for degrading SDZ was •OH. DFT calculations combined with the analysis of LC-MS results showed that SDZ was degraded mainly through amino oxidation, hydroxylation of heterocyclic roots, heterocyclic root ring opening, and C-S bond breaks. In addition, the N-MXene-3 cathode catalyst prepared in this study showed excellent stability through repeated experiments and also showed good performance in real water sample.","PeriodicalId":11704,"journal":{"name":"Environmental Engineering Research","volume":"30 3","pages":"240441-0"},"PeriodicalIF":0.0,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147334059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Characteristic and assessment of solvent and Mg/Al-LDH adsorption-based recovery of phosphorus from municipal sludge","authors":"Rong Fan, Lihui Zhang, Feng Duan","doi":"10.4491/eer.2024.452","DOIUrl":"https://doi.org/10.4491/eer.2024.452","url":null,"abstract":"In this study, a new strategy of enriching phosphorus by degradative solvent extraction of sludge and phosphorus recovery with low-cost adsorbents was introduced. The phosphorus recovery performance of three unmodified, low-cost adsorbents was compared, and the effects of the adsorbent dosage, phosphorus concentration, and pH of the extraction solution on the adsorption efficiency of Mg/Al-LDH were studied. The adsorption mechanism of phosphorus in acid leaching environment was also discussed. Results show that phosphorus-rich extraction residue is successfully separated from sludge. Compared to other adsorbents, Mg/Al-LDH has stronger adsorption capacity, and its adsorption efficiency is 8 times and 1.7 times higher than that of activated alumina and bentonite, respectively. The adsorption equilibrium time is 90 seconds, with phosphorus concentrations ranging from 528 to 145 mg/l in an acidic environment, achieving a phosphorus recovery rate of up to 99%. The influence of the pH value is not obvious. The interface phenomenon of Mg/Al-LDH for phosphorus adsorption involves many physical and chemical processes, including physical adsorption, anion exchange and surface complexation. The results show that the scheme is economic and feasible, which can obviously reduce environmental pollution and has considerable economic and environmental benefits.","PeriodicalId":11704,"journal":{"name":"Environmental Engineering Research","volume":"30 3","pages":"240452-0"},"PeriodicalIF":0.0,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"http://www.eeer.org/upload/eer-2024-452.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147919946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Super-hydrophobic blended needle-punched nonwovens integrated with silica-aerogels for PM2.5 filtration","authors":"Hanur Meku Yesuf, Syed Rashedul Islam, Xueping Zhang, Xiaohong Qin","doi":"10.4491/eer.2024.404","DOIUrl":"https://doi.org/10.4491/eer.2024.404","url":null,"abstract":"This study investigated the hydrophobic and PM2.5 filtration properties of blended needle-punched nonwovens with the treatment of silica-aerogel. The treatment was done by padding. The BET, SEM and FTIR studies were used to investigate the influence of silica-aerogel on needle-punched nonwovens such as surface properties and molecular interaction. All the treated samples showed super-hydrophobic properties with water contact angle (WCA) of around 154.2 - 154.79o, filtration efficiency of 99.07 - 99.21%, pressure drop of 72.83 - 79.71 Pa and dust-holding capacity of 3,459,520 - 3,472,060 particles/cm2. The findings demonstrated that silica-aerogel played a vital role in enhancing the hydrophobicity, filtration efficiency, dust-holding capacity and fabric density of blended needle-punched nonwovens with statistically significant performance (p<0.05). There was no statistically significant difference in pressure drop, air permeability, porosity, and fabric thickness, which indicated that the treated samples could perform without structure loss as compared to the untreated.","PeriodicalId":11704,"journal":{"name":"Environmental Engineering Research","volume":"30 3","pages":"240404-0"},"PeriodicalIF":0.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"http://www.eeer.org/upload/eer-2024-404.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147332518","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Feasibility of stabilizing Cd, Pb, and Ni in MSWI fly ash using leachate as an alternative stabilizer","authors":"Fugeng Zha, Wenjin Qi, Xin Chen, Siqi Yue, Xuanxuan Xue, Yuxiao Li, Juan Xu, Fuxin Liu, Xingming Wang, Duoxi Yao, Shiwen Zhang","doi":"10.4491/eer.2023.765","DOIUrl":"https://doi.org/10.4491/eer.2023.765","url":null,"abstract":"For the synergistic disposal of municipal solid waste incineration (MSWI) fly ash and leachate, MSWI fly ash was stabilized using leachate, sodium sulfide (Na2S), and sodium diethyldithiocarbamate (DDTC) separately or simultaneously. Results show that the leaching concentration of Cd, Ni, and Pb can be reduced when leachate is used alone but exceeds the landfill admission contents. The leaching concentration of heavy metals were lower than the threshold of the pollution control standard of Chinese garbage landfill (GB 16889-2008) after curing for 14d when DDTC was beyond 1.5%, and Na2S more than 10% except for Pb. The results of orthogonal experiment showed that the lowest leaching concentration was got at 5-fold dilution of leachate, 3% Na2S and 0.8% DDTC, and DDTC was the most influential factor. The leachate can be utilized as a partial stabilizer for stabilization of fly ash. After chemical stabilization, the crystal structure of fly ash changed little, and the surface was densified. The analysis of two-dimensional correlation spectroscopy results showed that the different order between the major function groups of fly ash and stabilizers was got, may be related to chelation, chemical reactions, and precipitation.","PeriodicalId":11704,"journal":{"name":"Environmental Engineering Research","volume":"30 1","pages":"230765-0"},"PeriodicalIF":0.0,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"http://www.eeer.org/upload/eer-2023-765.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147888862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Preparation of Yb/Bi2WO6 material and the photocatalytic degradation of Ofloxacin in water","authors":"Bing Jia, Lieshan Wu, Jing Zhang, Jingjing Luo, Dan Liu, Yizhong Chen, Xiaowei Lu, Yalin Zeng","doi":"10.4491/eer.2024.127","DOIUrl":"https://doi.org/10.4491/eer.2024.127","url":null,"abstract":"In this work, ytterbium (Yb) doped Bi2WO66 composite (Yb/ Bi2WO6) was prepared using a one-step hydrothermal method. The investigation focused on the photocatalytic degradation effect of Yb/Bi2WO6 on ofloxacin in water, with experimental conditions carefully controlled. The results revealed that under various conditions, Yb/Bi2WO6 exhibited excellent photocatalytic degradation performance for ofloxacin, achieving a degradation rate of 98.74% within 180 min and 93.27% after 4 cycles. These findings demonstrated that Yb/Bi2WO6 possessed good photocatalytic performance and cycling stability. The characterization results highlighted that the doping of Yb altered the morphology of Bi2WO6, narrowed the band gap, reduced photogenerated electron-hole recombination, and enhanced the photocatalytic performance of Yb/Bi2WO6. The free radical quenching experiments showed that superoxide radicals (・O2-) played a crucial role in the photocatalytic degradation of ofloxacin by Yb/Bi2WO6. Overall, this work provides new insights and theoretical support for the photocatalytic degradation of antibiotics using modified bismuth-based materials doped with rare earth elements.","PeriodicalId":11704,"journal":{"name":"Environmental Engineering Research","volume":"29 6","pages":"240127-0"},"PeriodicalIF":0.0,"publicationDate":"2024-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147886718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Seokwon Kang, Gusugsen Ren, Taejung Lee, Youngmin Jo
{"title":"Correlation between carbonaceous materials and fine particulate matters in urban school classrooms","authors":"Seokwon Kang, Gusugsen Ren, Taejung Lee, Youngmin Jo","doi":"10.4491/eer.2023.516","DOIUrl":"https://doi.org/10.4491/eer.2023.516","url":null,"abstract":"","PeriodicalId":11704,"journal":{"name":"Environmental Engineering Research","volume":"11 8","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139167091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}