Environmental Technology最新文献

{"title":"Efficiency and mechanism of three different additives in enhancing vermicomposting of dewatered sludge.","authors":"Mengqin Luo, Lingjiao Zhu, Chengpeng Huang, Yichuan Liang, Linzhu Li, Zhao Lang, Zhongji Wang, Xiaoqiang Gong","doi":"10.1080/09593330.2025.2464982","DOIUrl":"10.1080/09593330.2025.2464982","url":null,"abstract":"<p><p>This study aimed to investigate the effects of garden waste (GW), spent mushroom substrate (SMS), and bamboo residue (BR) as additives on dewatered sludge vermicomposting. The changes in physicochemical parameters, earthworm activities, and microbial communities were detected during the vermicomposting process. Results revealed that GW, SMS, and BR significantly enhanced the vermicomposting process by accelerating organic matter (OM) degradation, humus (HS) formation, and maturity degree. In different additive treatments, the OM degradation rate was enhanced by 60.70-226.05%, and the increase rates of TN, TP and HS were enhanced by 65.94-155.61%, 77.16-121.13%, and 91.37-205.33% as compared to CK. The GI value in all additive treatments increased by 23.07-41.34% compared with that in CK. GW, SMS, or BR addition also significantly reduced the content of Cu (16.87-33.99%), Zn (19.29-32.51%), Cr (18.34-39.98%), and Pb (22.62-37.83%) in vermicomposts compared with CK. Data showed that GW, SMS, and BR addition significantly enhanced the survival rate (54.55-72.73%) and growth and reproduction of earthworms compared with CK. The process of vermicomposting primarily relies on microbial activities and interactions between microorganisms and earthworms. The composition and succession of microbial communities are closely related to the quality of the vermicompost. Adding GW, SMS, or BR enhanced the richness and diversity of bacterial communities during the vermicomposting process. The additives remarkably stimulated beneficial bacteria, such as <i>Dokdonella</i> and <i>Luteimonas</i>, which were closely related to OM decomposition. The dewatered sludge in combination with GW, SMS, or BR can be successfully vermiconversion into useful vermicompost employing earthworms.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":"46 17","pages":"3467-3480"},"PeriodicalIF":2.2,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144474422","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}

{"title":"FeOOH-CoFe layered double hydroxide carbon felt cathode for the electro-Fenton degradation of oxytetracycline in aqueous solution.","authors":"Ruiqi Xie, Honglei Yang, Xuan Qiu, Weilin Guo","doi":"10.1080/09593330.2025.2460839","DOIUrl":"10.1080/09593330.2025.2460839","url":null,"abstract":"<p><p>Heterogeneous electro-Fenton is one of green and promising technologies for removing organic pollutants. In this paper, the FeOOH-CoFe layered double hydroxide carbon felt (LDH/CF) was synthesized by a facile hydrothermal method for an efficient degradation of oxytetracycline (OTC). The structural morphology and elemental composition of the composite electrode were studied by scanning electron microscopy, X-ray diffractometer, and X-ray photoelectron spectroscopy. Then, the electrocatalytic activity of the composite electrode was analysed through electrochemical characterization such as cyclic voltammetry, linear sweep voltammetry, and electrochemical impedance spectroscopy. The removal rate of 20 mg/L OTC reached about 91.6% at pH = 3, with a current density of 6.67 mA cm^-2 within 60 minute in the hydrophobic FeOOH-CoFe LDH/CF + PTFE system. Moreover, the catalytic electrode exhibited impressive degradation efficiency over a wide pH range. According to quenching experiments, the principal reactive oxygen species (·O₂^-, ·OH, and ¹O₂) involved in the degradation of OTC was identified. Based on this discovery, the possible mechanism for the degradation of OTC was also proposed. In addition, the cyclic experiment demonstrated relatively excellent stability of the hydrophobic FeOOH-CoFe LDH/CF + PTFE electrode, which provided the possibility for the practical application of the electrode.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"3271-3283"},"PeriodicalIF":2.2,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143398762","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}

{"title":"The performance and mechanism of transition metal oxide (Fe, Cu, Mn, Ce) on selective catalytic reduction of NO over ZSM-5.","authors":"Xuetao Wang, Chongfei Liu, Haipeng Hu, Lili Xing, Haojie Li, Mengjie Liu, Linfeng Miao","doi":"10.1080/09593330.2025.2474259","DOIUrl":"10.1080/09593330.2025.2474259","url":null,"abstract":"<p><p>Different transition metals (Fe, Cu, Mn, Ce) were used to prepare and characterise catalysts on ZSM-5 via impregnation, for the selective reduction of NO with NH₃. The Fe/ZSM-5 catalyst exhibited excellent NH₃-SCR activity in the 350-450°C temperature range, with a 96.91% NO conversion rate at 431°C. Moreover, the Ce/ZSM-5 and Cu/ZSM-5 catalysts showed superior catalytic activity at low temperatures (88.33% at 250°C and 91.82% at 289°C), while the Mn-modified catalysts exhibited a poor denitrification performance. The results also revealed that metal oxides improved metal ion dispersion, and the Fe and Cu active components were well distributed on the surface of the carrier. Moreover, Lewis acid sites predominately occurred in the active components of the Fe and Cu species, which increases the adsorption capacity. Among the four different metal-supported catalysts, Cu-ZSM-5 had the smallest activation energy. Highly dispersed metal ion active nanoparticles, improved redox properties, and rich acid centres are conducive to the reaction. The In-situ DRIFTs study found that Lewis acid sites play an important role in the denitrification reaction. The apparent reaction activation energy of Cu-ZSM-5 catalyst in four different metal-supported catalysts is the smallest, with an activation energy of 35.1 kJ mol^-1.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"3715-3728"},"PeriodicalIF":2.2,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143604368","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}

{"title":"Experimental study of Nd₂O₃ doped iron-based oxygen carrier for biomass chemical looping steam gasification process.","authors":"Guangjie Zhao, Liang Jin, Long-Jie Yu, Kun Song, Lanfang Huang, Qunxing Huang, Zhixiang Feng, Jianhua Yan","doi":"10.1080/09593330.2025.2521761","DOIUrl":"https://doi.org/10.1080/09593330.2025.2521761","url":null,"abstract":"<p><p>Oxygen carrier (OC) is vital in the biomass chemical looping process because the OC plays the multiple roles of lattice oxygen supply, heat transfer, and catalyst. In the current study, neodymium oxide doped iron-based oxygen carriers (Nd₂O₃-Fe₂O₃ OC) recycled from the Nd-Fe-B sintered magnet waste scraps and experimentally synthesized with various Nd₂O₃ weight ratios were used in the biomass chemical looping steam gasification (BCLSG) process for syngas production. The properties of the fresh and used Nd₂O₃-Fe₂O₃ OCs were characterized using different methods, including XRD, H₂-TPR, and SEM-EDS. Results showed that the activity of Fe₂O₃ was dramatically enhanced by Nd₂O₃ doping due to the formation of NdFeO₃ perovskite oxide in the Nd₂O₃-Fe₂O₃ OCs. The synergistic effect of Nd₂O₃ and Fe₂O₃ could exhibit more oxygen vacancies and enhance the catalytic activity of the OCs. Syngas yields exceeding 0.90 Nm³/kg, an H₂/CO mole ratio around 1.80 and carbon conversion efficiencies above 71% were reached with the Nd₂O₃-Fe₂O₃ OCs during the BCLSG process at 900°C, OC/B = 2:1, and S/B = 0.4. The generation of NdFeO₃ perovskite oxide mitigated the negative effect caused by the outward diffusion of Fe in the OCs, resulting in a stable performance of the Nd₂O₃-Fe₂O₃ OC during the multi-cycle BCLSG process. The recycled Nd₂O₃-Fe₂O₃ OC may be a better choice than the experimental synthesized one because its manufacturing method is more accessible, and does not require additional Nd₂O₃.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-14"},"PeriodicalIF":2.2,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144527023","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}

{"title":"Effect of additives on the electrocatalytic reduction of Fe(II)EDTA complexed NO absorbent.","authors":"Jing Ding, Yue Liang, Ziwei Liu, Hua Tong","doi":"10.1080/09593330.2025.2522479","DOIUrl":"https://doi.org/10.1080/09593330.2025.2522479","url":null,"abstract":"<p><p>The Fe(II)EDTA complexing nitric oxide (F-NO) absorption solution was regenerated using an electrocatalytic reduction system with Fe-Pd/NF as the working electrode. The study investigated the effects of additives such as sodium citrate, sodium acetate, sodium formate and ascorbic acid on the reduction of F-NO, using indicators like the F-NO removal rate, N₂ selectivity, Fe²⁺ regeneration rate, and N₂ Faraday efficiency. Linear sweep voltammetry (LSV) and electrochemical impedance spectroscopy (EIS) analysis revealed that adding these additives increases current density, ion conductivity, and mass transfer rate, facilitating the reduction reaction. While all additives enhanced the F-NO removal rate and Fe²⁺ regeneration rate, their concentration does not significantly impact the removal rate. Sodium formate exhibited the highest F-NO reduction efficiency, reaching 88.26%. The inclusion of ascorbic acid increases the Fe²⁺ regeneration rate to 98%. N₂ selectivity was found to be related to the presence of active hydrogen. When using 30 mmol/L of sodium formate or ascorbic acid alone, the effect on N₂ selectivity and Faraday efficiency were notably high, with N₂ selectivity reaching 87.91% and 82.12%, respectively, and corresponding Faraday efficiencies is 76.74% and 78.75%. The research results highlight that the pH buffering capabilities of sodium citrate, sodium acetate, and sodium formate facilitate a favorable reduction reaction within an acidic pH range of 2.5-4.5. Additionally, the reductive properties of sodium formate and ascorbic acid promote the generation of active hydrogen during electrocatalysis, which aids in the regeneration of Fe(II) and enhances nitrogen selectivity.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-20"},"PeriodicalIF":2.2,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144527021","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}

{"title":"Effect and mechanism of residual-chlorine on the horizontal transfer of antibiotic resistance genes of chlorine resistant bacteria in reclaimed water.","authors":"Xueli Ren, Beiqi Xiao, Mengyi Wu, Kunlun Yang, Peng Gu, ZengShuai Zhang, Hengfeng Miao","doi":"10.1080/09593330.2025.2516055","DOIUrl":"https://doi.org/10.1080/09593330.2025.2516055","url":null,"abstract":"<p><p>Chlorine disinfection inactivates most microbes in reclaimed water, but chlorine resistant bacteria (CRB) persist, threatening water safety and spreading antibiotic resistance genes (ARGs). ARG proliferation in reclaimed water systems risks public health, as dissemination via irrigation or urban reuse may enable environmental transmission to humans, exacerbating global antibiotic resistance. One hundred and fifty-two strains of CRB were isolated from reclaimed water in this study, and the detection rate of ARGs in those CRB was 100%, the detection rate for blTEM was 100%, followed by sul3 and tetG. Macrogenomic analysis revealed that Proteobacteria, Actinobacteria, and Bacteroidetes are the dominant CRB in reclaimed water. Long-term induction with the minimum inhibitory concentration (MIC) of NaClO enhanced the resistance of CRB to both Amp and NaClO. The EPS of CRB increased 1.30- to 2.04-fold, and the elevated surface hydrophobicity may serve as a co-resistance mechanism. EPS hindered disinfectant/antibiotic penetration, while hydrophobicity reduced hydrophilic molecule adhesion and promoted bacterial aggregation, both of which contribute to the enhanced resistance of CRB. Residual chlorine dose-dependently enhances ARG conjugation via ROS-SOS, ATP, and EPS pathways, unveiling novel CRB mechanisms and urging revised disinfection to mitigate ARG spread.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-14"},"PeriodicalIF":2.2,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144527020","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}

{"title":"Facile conversion and eco-friendly carbon-bentonite nano sheets synthesis from waste PET bottles and application in Cr⁶⁺ removal from aqueous solution.","authors":"Sepideh Sahragard, Ali Naghizadeh, Sobhan Mortavazi","doi":"10.1080/09593330.2025.2522477","DOIUrl":"https://doi.org/10.1080/09593330.2025.2522477","url":null,"abstract":"<p><p>Plastics are extensively utilised in all aspects of life owing to their durability and low price. Global production of polyethylene and polypropylene (the most common microplastics in soil and water) is increasing at an annual rate of approximately 7%. However, owing to the weak plastic natural degradation, low recycling rate, and potential ecological and health risks, the environmental issues brought on by plastic accumulation in marine and land environments have garnered international attention. To protect the environment, waste minimisation, reuse, and recycling processes should be developed. However, heavy metals such as chromium have caused many problems in aquatic environments. This study mainly aimed to synthesise carbon-bentonite nanocomposite and its use for chromium removal. The aforementioned nanocomposites were characterised by FESEM, XRD, EDX, FT-IR, and DLS techniques. To explore the mutual effects of various parameters in chromium adsorption, Central Compound Design (CCD) and Response Surface Methodology (RSM) were used. The maximum efficiency of chromium removal at pH of 5, 90 (minutes), initial chromium concentration of 20 (mg/L), and adsorbent dosage of 10 (mg/L), which was equal to 46.17% and adsorption capacity = 16.5 mg/L. Based on findings, chromium adsorption followed pseudo-second-order (PSO) kinetics and Freundlich and Langmuir isotherms. Thermodynamic and temperature studies also demonstrated that the process efficiency increased with increasing temperature. Owing to its availability and low cost, the combination of nano-bentonite and carbon obtained from PET recycling is recommended as a good adsorbent for removing chromium and other pollutants.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-17"},"PeriodicalIF":2.2,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144527024","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}

{"title":"Enhancing anaerobic digestion performance of food waste through direct interspecies electron transfer via conductive materials.","authors":"Jing Tang, Kexin Tong, Jun Lee, Chi Zhang, Ze Lv, Tao Xiang, Yang Su","doi":"10.1080/09593330.2025.2523569","DOIUrl":"https://doi.org/10.1080/09593330.2025.2523569","url":null,"abstract":"<p><p>To enhance the anaerobic digestion efficiency of food waste, this study investigated the effects of four conductive materials, including granular activated carbon (GAC), powdered activated carbon (PAC), magnetite (Fe₃O₄), and hematite (Fe₂O₃), on direct interspecies electron transfer (DIET). Results indicated that all four conductive materials enhanced the digestion performance. PAC at 10 g/L exhibited the best performance, achieving a methane yield of 308 mL/g volatile solids (VS), 12.41% higher than the control group without conductive material addition. At the end of the reaction, the system pH was 6.76, volatile fatty acids concentration decreased to 486 mg/L, soluble chemical oxygen demand removal reached 81%, and ammonia nitrogen accumulation was 713 mg/L. Microbial community analysis showed that adding PAC selectively increased the relative abundance of acidifying bacteria (<i>Firmicutes</i> and <i>Bacteroidota</i>) by 8.16% and methanogenic bacteria (<i>Euryarchaeota</i>) by 4.36%. The relative abundance of <i>Methanosaeta</i> increased from 39.23% to 49.15%. Response surface methodology optimisation further identified ideal conditions: total solids content of 9.49%, inoculum ratio of 2.77/1, and PAC dosage of 10.87 g/L, resulting in a maximum methane yield of 347.60 mL/g VS. These findings demonstrate PAC's potential as an effective additive for improving anaerobic digestion performance by enhancing DIET, methane production and overall efficiency in food waste resource utilisation.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-13"},"PeriodicalIF":2.2,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144527022","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}

{"title":"A comparison of the degradation of benzothiazole in the UV/H₂O₂ and UV/K_2s2o8 systems: degradation processes and degradation mechanisms.","authors":"Lei Chen, Yun Wang, Haiyang Shao, Chengkai Mao, Minghong Wu, Gang Xu","doi":"10.1080/09593330.2025.2519961","DOIUrl":"https://doi.org/10.1080/09593330.2025.2519961","url":null,"abstract":"<p><p>The increasing presence of benzothiazole (BTH) in industrial wastewater poses significant environmental and health risks due to its persistence and toxicity. This study compares UV/persulfate (UV/K₂S₂O₈) and UV/H₂O₂ systems for benzothiazole (BTH) degradation, revealing that UV/K₂S₂O₈ achieves complete BTH removal (100%, 0.189 min^-1) versus 85% (0.092 min^-1) for UV/H₂O₂ under identical conditions. Radical scavenging experiments and LC-MS analysis demonstrate sulfate radicals outperform hydroxyl radicals in oxidizing BTH heterocyclic structure, reducing intermediates by 63% (quantified via peak area ratios). pH-dependent kinetics show UV/K₂S₂O₈ maintains efficacy (90-100% removal) across pH 3-9, while UV/H₂O₂ efficiency drops to 58% at pH > 7. Practical validation in river water confirms UV/K₂S₂O₈ robustness (98% BTH degradation), positioning it as a scalable, energy-efficient solution for refractory pollutant treatment. The results showed that the oxidant concentration and pH affected the degradation rate of BTH by changing the free radical concentration, and the UV/ K₂S₂O₈ was demonstrated to be able to achieve efficient removal of pollutants in complex environmental matrices. Free radical scavenging experiments and liquid chromatography-mass spectrometry analysis confirm that sulfate radicals are more effective than hydroxyl radicals in oxidizing and degrading BTH, enabling rapid, efficient, and environmentally friendly degradation of pollutants. This is mainly due to the higher redox potential of sulfate radicals (2.8-3.1V) compared to hydroxyl radicals (2.01V), resulting in the generation of fewer intermediates. Compared to UV/H₂O₂, UV/K₂S₂O₈ is a more effective, cleaner, and energy-saving method for pollutant removal in various complex environmental matrices.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-17"},"PeriodicalIF":2.2,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144527019","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}

{"title":"Effective removal of water-soluble azo dyes by cubic MgO micromotors.","authors":"Yanxia Nan, Bozhi Kang, Xiaole Mei, Qi Zhang, Wenjie Zhao","doi":"10.1080/09593330.2025.2521042","DOIUrl":"https://doi.org/10.1080/09593330.2025.2521042","url":null,"abstract":"<p><p>As one of the main dyes in the textile industry, azo dyes have a serious impact on the ecological environment and health through their wastewater discharge. It has become crucial to develop effective methods for removing these substances. Currently, research on micro-nano technology is underway to develop new micro-nano systems and materials that can rapidly and effectively remove pollutants and heavy metals from water. This study reported the successful preparation of cubic magnesium oxide (MgO) micromotors dynamic nanomaterials through chemical deposition-hydrothermal-ion sputtering and explored the adsorption performance and mechanism of MgO micromotors on methyl orange (MO) azo dye. The surface morphology, composition and motion trajectory of nanomaterials were analysed using scanning electron microscopy (SEM), transmission electron microscopy (TEM), BET automatic specific surface area and pore size analyser, X-ray diffraction (XRD), upright optical microscopy and NIS-Elements software. The MgO micromotors exhibit a mean square displacement of 4.599 μm² and an average velocity of 3.87 ± 0.54 μm/s in a 6% H₂O₂ solution, demonstrating their self-propulsion ability in static water. Furthermore, the adsorption capacity of MgO micromotors for MO is significantly enhanced with increasing H₂O₂ concentration, reaching a removal rate as high as 97.46% at a 6% H₂O₂ concentration. Fourier transform infrared spectroscopy (FTIR) analysis confirmed that a strong chemical bond (coordinate bond) was formed between the negatively charged anionic azo dye MO and the MgO micromotors which could be hydrolysed to produce easily dissociated magnesium hydroxide (Mg(OH)₂) in aqueous solution, resulting in enhanced adsorption properties.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-11"},"PeriodicalIF":2.2,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144483718","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}