Environmental Technology最新文献_第8页

Migration of heavy metals and microbial metabolic regulation mechanisms in the co-fermentation of coal slime and sawdust. 煤泥与木屑共发酵过程中重金属迁移及微生物代谢调控机制

IF 2.2 4区环境科学与生态学

Environmental Technology Pub Date : 2025-03-27 DOI: 10.1080/09593330.2025.2482966

Yongxin Guan, Hongyu Guo, Daping Xia, Yan Liu, Xinggang Wang

{"title":"Migration of heavy metals and microbial metabolic regulation mechanisms in the co-fermentation of coal slime and sawdust.","authors":"Yongxin Guan, Hongyu Guo, Daping Xia, Yan Liu, Xinggang Wang","doi":"10.1080/09593330.2025.2482966","DOIUrl":"https://doi.org/10.1080/09593330.2025.2482966","url":null,"abstract":"Heavy metals (HMs) significantly affect the anaerobic fermentation of coal slime (CS), while sawdust serves as a promising substrate for methane bioconversion and an effective adsorbent for HMs. To explore the migration of HMs and improve the conversion efficiency of CS and sawdust to biomethane, experiments were conducted on the co-fermentation of CS and sawdust with different mass ratios. FT-IR, ICP-MS, SEM-EDS, and metagenomic sequencing were employed to elucidate the regulation mechanism of microorganisms after adding sawdust in altering the toxicological environment. The results revealed that the optimum mass ratio of CS to sawdust was 2:1. Oxygen-containing functional groups in CS were removed, and the fatty structure was degraded. Addition of sawdust promoted the further degradation of CS and migration of various HMs. Metal elements such as Fe, Mg, Co, and Cd had also been detected on its surface. Bacillota (39.05%) was significantly enriched, which effectively improved the microbial community structure. The abundance of species with metal detoxification functions increased. The types and abundance of transporters related to toxic metal ions increased in families such as ATP-binding Cassette Superfamily (ABC) and Resistance-Nodulation-Cell Division Superfamily (RND), which would further aid in cellular homeostasis. Moreover, the addition of sawdust promoted the expression of metal resistance genes (MRGs). Multi-MRGs were primarily linked to Cu, As, and Zn, with an increased abundance of bacterial species contributing to key MRGs such as copA, ziaA, and actP. These findings offer valuable insights that support the clean and efficient utilization of CS and sawdust.","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-15"},"PeriodicalIF":2.2,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143729430","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}

引用次数: 0

Improvement of the three-dimensional electrochemical degradation of amoxicillin using Co₃O₄/GAC as both particle electrode and catalyst for peroxymonosulfate activation. 用Co3O4/GAC作为颗粒电极和过氧单硫酸盐活化催化剂改进阿莫西林的三维电化学降解。

IF 2.2 4区环境科学与生态学

Environmental Technology Pub Date : 2025-03-27 DOI: 10.1080/09593330.2024.2447961

Jinsong Ma, Songchol Hyon, Sunghyok Kim, Tong Chol Ri

{"title":"Improvement of the three-dimensional electrochemical degradation of amoxicillin using Co3O4/GAC as both particle electrode and catalyst for peroxymonosulfate activation.","authors":"Jinsong Ma, Songchol Hyon, Sunghyok Kim, Tong Chol Ri","doi":"10.1080/09593330.2024.2447961","DOIUrl":"https://doi.org/10.1080/09593330.2024.2447961","url":null,"abstract":"In this study, a novel three-dimensional (3D) electrode system (3D-Co3O4/GAC-PMS) was constructed that can effectively degrade amoxicillin (AMX) in aqueous solution using granular activated carbon (GAC) loaded with Co3O4 catalyst (Co3O4/GAC) as a catalyst for the activation of peroxymonosulfate (PMS) as well as particle electrode. The effects of the main operating parameters on AMX degradation, TOC removal, electrical energy consumption and current efficiency were investigated. Under the optimum operating conditions (initial solution pH of 5.9, PMS concentration of 13 mmol/L, current density of 5.6 mA/cm2), 99.9% of AMX was degraded after 10 min of treatment and 96.8% of TOC was removed after 120 min of treatment. Meanwhile, the electrical energy consumption of the system was very small, only 45.1 kWh/kg TOC. Comparative experiments with other systems and kinetic analysis have confirmed the superior performance of the 3D-Co3O4/GAC-PMS system for the degradation of AMX. During five cycles, the Co3O4/GAC particle electrode showed excellent stability and long lifetime. The 3D-Co3O4/GAC-PMS system simultaneously degraded 100% of three different pharmaceuticals (amoxicillin, ciprofloxacin and acetaminophen) after 8 min of reaction and removed 88.1% TOC after 120 min of reaction, which suggested the applicability of the system for real wastewater treatment. The degradation of AMX was confirmed using UV-Vis spectroscopy and the reaction mechanism of the 3D-Co3O4/GAC-PMS system was proposed. Based on the intermediates detected by ultra-high pressure liquid chromatograph coupled with quadrupole time-of-flight mass-spectrometry, the degradation pathways of AMX in the 3D-Co3O4/GAC-PMS system were presented.","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-19"},"PeriodicalIF":2.2,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143729380","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}

引用次数: 0

Experimental investigation of styrene destruction in a non-thermal multi-arc plasma reactor with three pairs of electrodes. 苯乙烯在三对电极非热多弧等离子体反应器中的破坏实验研究。

IF 2.2 4区环境科学与生态学

Environmental Technology Pub Date : 2025-03-27 DOI: 10.1080/09593330.2025.2474258

Huan Zheng, Guohua Ni, Hongmei Sun, Siyuan Sui, Zhongyang Ma, Yanjun Zhao, Tiancheng Li, Tingwei Nie

引用次数: 0

Treatment of aged leachate by a three-dimensional electrochemical system with biochar as particle electrodes. 以生物炭为颗粒电极的三维电化学系统处理老化渗滤液。

IF 2.2 4区环境科学与生态学

Environmental Technology Pub Date : 2025-03-27 DOI: 10.1080/09593330.2025.2480320

Fangze Wang, Chengze Ye, Jiayi Wang, Xiangyang Xu

{"title":"Treatment of aged leachate by a three-dimensional electrochemical system with biochar as particle electrodes.","authors":"Fangze Wang, Chengze Ye, Jiayi Wang, Xiangyang Xu","doi":"10.1080/09593330.2025.2480320","DOIUrl":"https://doi.org/10.1080/09593330.2025.2480320","url":null,"abstract":"Aged landfill leachate is a type of refractory wastewater containing high concentrations of humic substances and ammonia nitrogen (NH3-N). A new three-dimensional electrocatalytic oxidation (3D-ECO) system was constructed to treat aged leachate using a composite-loaded metal electrode as the anode, a titanium plate as the cathode, and coconut shell biochar (CBC) as particle electrodes. The conditions for the electrochemical reaction were first optimized, and the pollutant removal effects of the two-dimensional (2D) and 3D systems were compared under optimal conditions. Finally, the electrochemical degradation mechanism was analysed. The results showed that when the initial pH was 5, the current density was 30 mA/cm², the particle addition was 7 g/L, and the electrode plate spacing was 4 cm, the pollutant removal efficiency in the leachate was the highest. At then the removal rates of COD and NH3-N were 90.2% and 30.4%, respectively, while under the same conditions, they in the 2D system were only 41.1% and 17.4%, respectively. The introduction of CBC has increased the removal rate of organic pollutants in leachate by 49.1% and reduced energy consumption by 57.2%. Various active substances such as hydrogen peroxide, hydroxyl radicals, and singlet oxygen played a major role in the degradation of leachate pollutants. The synergy between the anode and the third electrode (75%) enhanced the overall effect of electrochemical degradation of organic pollutants in leachate. Therefore, the introduction of CBC can effectively improve the level of pollutant removal, and the 3D-ECO process is a promising technology for treating aged landfill leachate.","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-14"},"PeriodicalIF":2.2,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143729450","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}

引用次数: 0

Immobilisation of endogenous phosphorus and lead in sediments by composite water purification sludge hydrochar. 复合水净化污泥烃类固定化沉积物中内源磷和铅的研究。

IF 2.2 4区环境科学与生态学

Environmental Technology Pub Date : 2025-03-27 DOI: 10.1080/09593330.2025.2482969

Ying Liu, Liwenze He, Yu Chen, Jingxiang Tang, Haiquan Li, Yanxia Liu

{"title":"Immobilisation of endogenous phosphorus and lead in sediments by composite water purification sludge hydrochar.","authors":"Ying Liu, Liwenze He, Yu Chen, Jingxiang Tang, Haiquan Li, Yanxia Liu","doi":"10.1080/09593330.2025.2482969","DOIUrl":"https://doi.org/10.1080/09593330.2025.2482969","url":null,"abstract":"Sediment is a critical component of aquatic ecosystems, that acts as a natural sink for diverse pollutants such as heavy metals and phosphorus (P). However, the current research on sediment remediation has predominantly focused on single contaminants. In this study, a novel composite material, calcium peroxide/lanthanum-loaded hydrochar (CaO2-LaHyd), was synthesised through the hydrothermal carbonisation of water purification sludge, followed by the sequential loading of lanthanum ions and nano-calcium peroxide. The adsorption capacities of CaO2-LaHyd for P and Pb were evaluated via adsorption experiments, and their passivation mechanisms were investigated through sediment capping simulations. Materials were characterised using scanning electron microscopy, X-ray photoelectron spectroscopy, X-ray diffraction, and energy-dispersive spectroscopy. Results indicated that CaO2-LaHyd exhibited maximum adsorption capacities of 66.05 mg·g⁻¹ for P and 230.41 mg·g⁻¹ for Pb. In the simulated capping experiments, the addition of 5% CaO2-LaHyd significantly reduced the phosphate concentrations in the overlying water. The slow release of oxygen from calcium peroxide improves sediment redox conditions, suppresses endogenous P release, and decreases interstitial P levels. Speciation analysis revealed that CaO2-LaHyd promoted the endogenous P transformation into stable forms while reducing the bioavailable P fractions. Concurrently, it enhanced Pb passivation, thereby mitigating Pb leaching risks from the sediment.","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-14"},"PeriodicalIF":2.2,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143729377","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}

引用次数: 0

Experimental and kinetic investigation of textile-based refuse derived fuel (t-RDF) pyrolysis: analysing the valorisation of textile waste. 纺织垃圾衍生燃料（t-RDF）热解的实验和动力学研究：分析纺织废物的增值。

IF 2.2 4区环境科学与生态学

Environmental Technology Pub Date : 2025-03-27 DOI: 10.1080/09593330.2025.2482964

Mohd Zeeshan, Rohan R Pande, Purnanand V Bhale

{"title":"Experimental and kinetic investigation of textile-based refuse derived fuel (t-RDF) pyrolysis: analysing the valorisation of textile waste.","authors":"Mohd Zeeshan, Rohan R Pande, Purnanand V Bhale","doi":"10.1080/09593330.2025.2482964","DOIUrl":"https://doi.org/10.1080/09593330.2025.2482964","url":null,"abstract":"A majority of global textile waste is neither recycled nor repurposed; instead, it finds its way into landfills or incinerators. Polymer-based textiles, a significant component of this waste, may persist in landfills without degrading for up to two centuries. This study investigates valorisation of specific blends of textile-based Refuse Derived Fuel (t-RDF) in a novel simultaneous experimental and kinetic analysis to determine pyrolysis product characteristics with process kinetics and thermal parameters. A TGA is initially used to examine the degradation characteristics of t-RDF at three heating rates: 5, 10, and 20 °C.min-1. The kinetics of the non-isothermal pyrolysis of t-RDF are investigated to obtain the activation energy changes that represent the process kinetics for forecasting pyrolysis using the reaction scheme. The average activation energy of the t-RDF, deduced using the Starink model, is found to be 99.22 kJ.mol-1. An in-house designed reactor is used to perform pyrolysis at different temperatures to analyse the effect of compositional variations in the t-RDF. The physicochemical properties of the pyrolysis products are characterised using FTIR spectroscopy, proximate and ultimate analysis, and surface area (BET) analysis. Synthesised t-RDF composition exhibits a heating value of 22.40 ± 3.33 MJ.kg-1, and pyrolysis gas has a heating value of 20.5 ± 1 MJ.m-3, whereas chars are analysed to provide a maximum BET surface area of 32.71 m2.g-1. The study provides insights into sustainable methods to valorise textile waste for valuable products while reducing landfills and promoting renewable sources.","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-14"},"PeriodicalIF":2.2,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143729394","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}

引用次数: 0

Efficient degradation of industrial slaughterhouse wastewater by electrooxidation process: impact of DSA anode materials on oxidation and operating costs. 电氧化法高效降解工业屠宰场废水：DSA阳极材料对氧化和运行成本的影响。

IF 2.2 4区环境科学与生态学

Environmental Technology Pub Date : 2025-03-27 DOI: 10.1080/09593330.2025.2482975

Nawid Ahmad Akhtar, Mehmet Kobya

{"title":"Efficient degradation of industrial slaughterhouse wastewater by electrooxidation process: impact of DSA anode materials on oxidation and operating costs.","authors":"Nawid Ahmad Akhtar, Mehmet Kobya","doi":"10.1080/09593330.2025.2482975","DOIUrl":"https://doi.org/10.1080/09593330.2025.2482975","url":null,"abstract":"This research investigates the effect of the electrooxidation (EO) process on the treatment efficiency, discharge criteria, and water reuse or irrigation standards of industrial slaughterhouse wastewater (ISWW). The study was carried out on different anode materials such as (Ti/Pt-IrO2, Ti/RuO2-IrO2, Ti/RuO2, and Ti/IrO2-Ta2O5), current densities (50-150 A/m2), and reaction time (0-540 min). COD, TOC, and turbidity removal efficiency under optimum conditions (anode = Ti/Pt-IrO2, j = 150 A/m2, and t = 360 min) were calculated as 99.6, 96.1, and 99.9%, respectively. The energy consumption and total operating cost were calculated as 68.3 kWh/m3 (15.4 and 50.6 kWh/kg COD or TOC) and 2.40 $/m3 (0.62 and 2.02 $/kg COD or TOC), respectively. Furthermore, the results are compared together with existing published/reported discharge criteria for adequate environmental release in different jurisdictions worldwide. Additionally, a relationship has been established between the World Bank Group/United States Environmental Protection Agency (WBG/US EPA) water reuse or irrigation standards. At the end of the study, the biodegradability of ISWW after EO was assessed using the carbon oxidation state (COS) and average oxidation state (AOS) parameters, and kinetic modeling with heterogeneous kinetics was comprehensively evaluated. The findings of the study show that the EO process using the Ti/Pt-IrO2 anode is an efficient method for the ISWW treatment.","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-13"},"PeriodicalIF":2.2,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143729389","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}

引用次数: 0

Hydrochar-enhanced hydrogen production from cassava industrial waste residue using Enterobacter Aerogenes MTCC 2822. 利用产气肠杆菌MTCC 2822从木薯工业废渣中加氢制氢研究。

IF 2.2 4区环境科学与生态学

Environmental Technology Pub Date : 2025-03-27 DOI: 10.1080/09593330.2025.2480319

Subash Kannan Ravichandran, Blessy Silvaster, Selvakumar Rajendran, Jonathan W C Wong, Brindha Ganesan, Davidraj Johnravindar

{"title":"Hydrochar-enhanced hydrogen production from cassava industrial waste residue using Enterobacter Aerogenes MTCC 2822.","authors":"Subash Kannan Ravichandran, Blessy Silvaster, Selvakumar Rajendran, Jonathan W C Wong, Brindha Ganesan, Davidraj Johnravindar","doi":"10.1080/09593330.2025.2480319","DOIUrl":"https://doi.org/10.1080/09593330.2025.2480319","url":null,"abstract":"Hydrogen gas (H2) is a promising renewable resource, and its production from organic waste has gained significant attention as an alternative to traditional energy sources. This study investigates hydrogen production from cassava industry waste residue (CWR) by incorporating hydrochar-supported nanoparticles (HSNPs) containing nickel (Ni) and iron (Fe) nanoparticles (NPs). Ni and Fe2O3 NPs were synthesised through the hydrothermal carbonisation (HTC) method and analyzed for their impact on biohydrogen production. The results indicated a maximum volumetric hydrogen production rate of 1013 mL/gCWR, with a substrate degradation efficiency of 80%. Addition of 0.5 mol Ni-Fe2O3 hydrochar was found to be optimal which enhanced the overall cumulative hydrogen production by 41.015%, and higher COD removal efficiency by 90% was obtained as compared to hydrochar without additives. The toxicity of NPs was assessed through bacterial viability, which examined various loading concentrations of NPs in a glucose medium. The findings revealed that supplementing hydrochar-supported NiO and Fe2O3 NPs within an optimal range for CWR can significantly improve hydrogen productivity. Additionally, HSNPs can enhance hydrogenase activity and electron transfer efficiency, which are beneficial to bio-H2 evolution. However, excessive HSNP addition may be toxic to microbes and further inhibit H2 production. This study presents an effective method for promoting the evolution rate of H2 gas.","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-17"},"PeriodicalIF":2.2,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143729415","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}

引用次数: 0

Flow condition mitigates the inhibition of high concentration Cu²⁺ on the sulfate reduction performance of microbial electrolysis cell. 流动条件减轻了高浓度Cu2+对微生物电解池硫酸盐还原性能的抑制作用。

IF 2.2 4区环境科学与生态学

Environmental Technology Pub Date : 2025-03-19 DOI: 10.1080/09593330.2025.2478183

Yunfeng Zhang, Yubing Pan, Cheng Zhao, Minghui Lv, Qing Jiang, Feng Wang, Yanan Li, Shuai Gao, Ke Shi

{"title":"Flow condition mitigates the inhibition of high concentration Cu2+ on the sulfate reduction performance of microbial electrolysis cell.","authors":"Yunfeng Zhang, Yubing Pan, Cheng Zhao, Minghui Lv, Qing Jiang, Feng Wang, Yanan Li, Shuai Gao, Ke Shi","doi":"10.1080/09593330.2025.2478183","DOIUrl":"https://doi.org/10.1080/09593330.2025.2478183","url":null,"abstract":"Microbial electrolysis cells (MECs) are promising for treating acidic mine drainage (AMD) containing high concentrations of sulfates and heavy metals. However, the performance of MEC cathodic biofilms is influenced not only by high heavy metals concentrations but also by hydrodynamic mixing conditions. Yet, there is a lack of precise assessment on the impact of hydrodynamic mixing conditions on MEC treating sulfate-laden wastewater under high heavy metal stress, and the defense mechanisms of MECs remain unclear. This study investigated the effects of different hydrodynamic conditions (EG, flow condition; CG, stationary condition) on the performance of MECs treating sulfate wastewater under high heavy metal stress, delving into microbial activity, community composition, electrochemical performance, and microbial defense capabilities against heavy metals. The results indicated that under heavy metal stress, microbial cells underwent severe deformation and death, with the assimilatory sulfate reduction pathway severely impaired, leading to a decline in MEC performance, and the reduction rate of CG group was finally reduced to 14.47%. In contrast, under flow conditions, the EG group exhibited increased extracellular polymeric substances (EPS) composition, enhanced biofilm community diversity, and elevated levels of copper resistance genes, significantly mitigating the inhibitory effects of Cu2+ on microorganisms, ultimately maintaining a performance of 47.18%. Ultimately, Cu2+ in the system was removed through bioprecipitation and biosorption, forming CuS and Cu(OH)2. This work provides critical insights for scaling up MEC technology to address co-contamination challenges in acid mine drainage remediation, particularly for environments with hydrodynamic mixing conditions and elevated heavy metal concentrations.","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-12"},"PeriodicalIF":2.2,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143663105","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}

引用次数: 0

Endophytic bacteria-assisted cadmium removal in sunflower stalks: towards safe biomass recycling. 内生细菌辅助向日葵茎中镉的去除：迈向安全的生物质回收。

IF 2.2 4区环境科学与生态学

Environmental Technology Pub Date : 2025-03-19 DOI: 10.1080/09593330.2025.2478180

Liwei Chen, Qiuguo Zhang, Wei Li, Yue Xie, Tingli Wang, Jian Liu

{"title":"Endophytic bacteria-assisted cadmium removal in sunflower stalks: towards safe biomass recycling.","authors":"Liwei Chen, Qiuguo Zhang, Wei Li, Yue Xie, Tingli Wang, Jian Liu","doi":"10.1080/09593330.2025.2478180","DOIUrl":"https://doi.org/10.1080/09593330.2025.2478180","url":null,"abstract":"Cadmium (Cd) contamination in agricultural soils is one of the major threats to food safety and environmental health. In a phytoremediation program for the extraction of Cd by plants, one critical challenge is the management of harvested biomass because of its highly contaminant content. This study investigates the use of endophytic bacteria to assist in Cd removal from sunflower stalks, aiming to make the biomass safer for reuse as fertilizer. Sixteen endophyte strains were isolated from sunflower plants grown in Cd-contaminated soils, out of which two strains, J14 and J15, namely Enterobacter roggenkampii and Kosakonia cowanii, respectively, showed the most potential for Cd removal. Under the optimized conditions, 42.03% and 37.99% Cd removal efficiency could be achieved by J14 and J15, respectively. More than 50% of some specific forms of Cd (F2, F4, F5) in sunflower stalks can be reduced during extraction. Importantly, the treatment with endophytes lowered Cd in contaminated biomass without significant reductions in the major plant nutrients (nitrogen, phosphorus, and potassium), thus rendering it safe for its reuse as fertilizer. This study offers a novel perspective on biomass contamination in phytoremediation, suggesting a new environmentally friendly approach for the recycling of polluted plant material towards safer and more economic phytoremediation practices.","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-14"},"PeriodicalIF":2.2,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143663103","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}

引用次数: 0