ACS ES&T engineering最新文献_第5页

Unexpected Mn(V) Generation in Mn(II)/Sulfite System for Efficient Water Decontamination: Critical Role of Complexing Ligands in Regulating Mn(II) Activity Mn(II)/亚硫酸盐系统中意想不到的Mn(V)生成用于有效的水净化：配合配体在调节Mn（II）活性中的关键作用

IF 7.4

ACS ES&T engineering Pub Date : 2024-12-23 DOI: 10.1021/acsestengg.4c0074110.1021/acsestengg.4c00741

Yuan Gao, Yun Luo, Jingyu Hu, Ziyang Chen, Xuezhen Wei, Zhanhao Yun, Zhong Zhang, Jinxing Ma, Yang Zhou* and Xiaohong Guan*,

{"title":"Unexpected Mn(V) Generation in Mn(II)/Sulfite System for Efficient Water Decontamination: Critical Role of Complexing Ligands in Regulating Mn(II) Activity","authors":"Yuan Gao, Yun Luo, Jingyu Hu, Ziyang Chen, Xuezhen Wei, Zhanhao Yun, Zhong Zhang, Jinxing Ma, Yang Zhou* and Xiaohong Guan*, ","doi":"10.1021/acsestengg.4c0074110.1021/acsestengg.4c00741","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00741https://doi.org/10.1021/acsestengg.4c00741","url":null,"abstract":"In recent times, advanced oxidation processes (AOPs) based on sulfite activation via transition metal ions have gained significant attention for water decontamination. In this work, we unexpectedly discovered that Mn(II) was inefficient in sulfite activation for water treatment. Intriguingly, the introduction of amino ligands such as nitrilotriacetic acid and picolinic acid significantly enhanced the performance of Mn(II) in sulfite activation, enabling the effective abatement of contaminants. By combining quenching, chemical probing, 18O isotope tracing, and electrochemical experiments, this study addressed why the Mn(II)/sulfite system was sluggish in contaminants degradation, how Mn(V) was generated in the Mn(II)/sulfite/amino ligand system, and why different complexing ligands exhibited distinct performances. We demonstrated that the amino ligand notably enhanced the activity of Mn(II) with the production of stabilized Mn(III), which underwent further conversion to Mn(V) species, resulting in the rapid degradation of contaminants. This study represents the first discovery of the unexpected Mn(V) formation from low-valence manganese in a sulfite-based system. Furthermore, the spectral characteristics of Mn(V) species under environmental pH conditions were identified for the first time. These findings introduce a novel oxidation process for water decontamination and will broaden our understanding of sulfite-activation-based AOPs as well as the application of manganese chemistry in water treatment for decontamination and beyond.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"5 4","pages":"970–978 970–978"},"PeriodicalIF":7.4,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanistic Insights into Sulfamethazine Degradation by Defect-Rich MnO2-Activated Peracetic Acid 富缺陷二氧化锰活化过氧乙酸降解磺胺乙胺的机理研究

IF 7.4

ACS ES&T engineering Pub Date : 2024-12-18 DOI: 10.1021/acsestengg.4c0059610.1021/acsestengg.4c00596

Jie Dong, Long Li, Chang Zhang, Daofen Huang, Xing Li, Mengxi Zhao, Guangfu Wang, Irene M. C. Lo, Xiaohong Guan and Haoran Dong*,

{"title":"Mechanistic Insights into Sulfamethazine Degradation by Defect-Rich MnO2-Activated Peracetic Acid","authors":"Jie Dong, Long Li, Chang Zhang, Daofen Huang, Xing Li, Mengxi Zhao, Guangfu Wang, Irene M. C. Lo, Xiaohong Guan and Haoran Dong*, ","doi":"10.1021/acsestengg.4c0059610.1021/acsestengg.4c00596","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00596https://doi.org/10.1021/acsestengg.4c00596","url":null,"abstract":"Manganese (Mn)-based oxides, mainly MnO2, have garnered significant attention in catalytic applications due to their superior redox properties and structural flexibility. However, their saturated coordination structure presents challenges in achieving an enhanced performance. Herein, a defective MnO2 catalyst (MnO2-D) was constructed, and for the first time, it was proven to effectively activate peracetic acid (PAA) for the complete degradation of sulfamethazine (SMT). Compared to MnO2 with a saturated coordination structure (i.e., the perfect MnO2 structure, MnO2-P), the MnO2-D catalyst exhibited a higher surface electron density and abundant surface oxygen vacancies (OVs), significantly improving its catalytic activity. Experimental evidence revealed that the OVs and Mn3+ on the surface of MnO2-D were considered as the primary active sites and that the MnO2-D/PAA system followed a singlet oxygen (1O2)-dominated nonradical pathway. The MnO2-D catalyst can maintain its activity with minimal interference from inorganic anions, humic acid, varying pH levels, and real water environments. In addition, the MnO2-D/PAA system was efficient in mitigating the toxicity of SMT and eliminating diverse micropollutants. This work presents an enhancement strategy for constructing defect-rich metal oxide catalysts to advance future water treatment technologies.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"5 3","pages":"607–619 607–619"},"PeriodicalIF":7.4,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143608841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced Medium-Chain Fatty Acids Production by Iron–Carbon Microelectrolysis: Performance and Mechanisms 铁碳微电解增强中链脂肪酸生产：性能和机制

IF 7.4

ACS ES&T engineering Pub Date : 2024-12-17 DOI: 10.1021/acsestengg.4c0075510.1021/acsestengg.4c00755

Jingwei Ma, Qihe Zhao, Qiulai He*, Liang Zhu and Shuizhou Ke,

{"title":"Enhanced Medium-Chain Fatty Acids Production by Iron–Carbon Microelectrolysis: Performance and Mechanisms","authors":"Jingwei Ma, Qihe Zhao, Qiulai He*, Liang Zhu and Shuizhou Ke, ","doi":"10.1021/acsestengg.4c0075510.1021/acsestengg.4c00755","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00755https://doi.org/10.1021/acsestengg.4c00755","url":null,"abstract":"The low biodegradability and slack electron transfer of waste-activated sludge (WAS) posed significant challenges to medium-chain fatty acids (MCFAs) production. Herein, a viable iron–carbon microelectrolysis (ICME) technique was proposed to improve the synthesis of MCFAs from WAS through accelerating WAS disintegration and substrate transformation and increasing the electron transport efficiency, simultaneously. Results showed that the maximum MCFAs production in the ICME-mediated chain elongation (CE) process was up to 4.4 times that of the control. Mechanistic exploration revealed that the formation of microscopic galvanic cells drove boosted electron transfer within the ICME, which greatly enhanced the effect of direct interspecies electron transfer (DIET), and thus promoted hydrolysis, acidogenesis, and CE processes. Additionally, Fe2+ formed by ICME facilitated orthophosphate removal through precipitation. Microbial community analysis revealed an increase in the number of anaerobic populations associated with hydrolysis and acidogenesis. Overall, this study demonstrated the viability of ICME for promoting MCFAs production from WAS, offering a novel avenue for microelectrolysis-aided resource recovery.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"5 4","pages":"991–1002 991–1002"},"PeriodicalIF":7.4,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Response of Exogenous and Indigenous Microorganisms in Alleviating Acetate–Ammonium Coinhibition during Thermophilic Anaerobic Digestion 外源和本地微生物对缓解嗜热厌氧消化过程中醋酸铵共抑制的响应

IF 7.4

ACS ES&T engineering Pub Date : 2024-12-17 DOI: 10.1021/acsestengg.4c0062810.1021/acsestengg.4c00628

Chao Yang, Pinjing He, Hua Zhang and Fan Lü*,

{"title":"Response of Exogenous and Indigenous Microorganisms in Alleviating Acetate–Ammonium Coinhibition during Thermophilic Anaerobic Digestion","authors":"Chao Yang, Pinjing He, Hua Zhang and Fan Lü*, ","doi":"10.1021/acsestengg.4c0062810.1021/acsestengg.4c00628","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00628https://doi.org/10.1021/acsestengg.4c00628","url":null,"abstract":"Bioaugmentation can alleviate the inhibition of acids and ammonia by introducing functional strains in anaerobic digesters, but there is an urgent need to develop functional strains that can be effective under thermophilic anaerobic digesters. The present study constructed a bioaugmentation consortium with four functional strains, namely, Coprothermobacter, Thermacetogenium, Methanothermobacter, and Methanosarcina, to strengthen the synergistic function of syntrophic acetate oxidation and methanogenesis for inhibited thermophilic anaerobic digesters. The result shows that the bioaugmentation with cells constituting only 1.11% (on the basis of VS to VS) of the inoculum led to methane production increasing by 702% at the coinhibition of 3 g/L acetate and 7 g NH4+-N/L, and by 49.5% at the coinhibition of 12 g/L acetate and 4 g NH4+-N/L. Highly tolerant Coprothermobacter contributed to this microbiological domino effect by collaborating with exogenous hydrogenotrophic Methanothermobacter and priming the indigenous syntrophic acetate-oxidizing Syntrophaceticus and hydrogenotrophic Methanoculleus. This bioaugmentation enhanced hydrogenotrophic methanogenesis, evidenced by carbon isotopic signals and an upregulation of the relating genes. Up-regulated genes relating to ion transport and catalyzing energy conversion suggested that this bioaugmentation was favorable to maintain normal cellular osmolality and meet energy demand under inhibited conditions.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"5 3","pages":"655–665 655–665"},"PeriodicalIF":7.4,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143608840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Role of the TiO2 Crystalline Phase in Pt-TiO2 for Thermocatalytic Mineralization of Gaseous Acetaldehyde TiO2晶相在Pt-TiO2热催化矿化气态乙醛中的作用

IF 7.4

ACS ES&T engineering Pub Date : 2024-12-16 DOI: 10.1021/acsestengg.4c0065410.1021/acsestengg.4c00654

Minhyung Lee, Bupmo Kim, Suho Kim, Hwan Kim, Minjun Park, Wonyong Choi, Wooyul Kim* and Hyoung-il Kim*,

{"title":"Role of the TiO2 Crystalline Phase in Pt-TiO2 for Thermocatalytic Mineralization of Gaseous Acetaldehyde","authors":"Minhyung Lee, Bupmo Kim, Suho Kim, Hwan Kim, Minjun Park, Wonyong Choi, Wooyul Kim* and Hyoung-il Kim*, ","doi":"10.1021/acsestengg.4c0065410.1021/acsestengg.4c00654","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00654https://doi.org/10.1021/acsestengg.4c00654","url":null,"abstract":"Pt-TiO2 is an efficient low-temperature thermocatalyst for volatile organic compound (VOC) removal, driven by active oxygen species formation through metal–support interactions. While the role of Pt is well established, the influence of TiO2 polymorphs on active oxygen generation is less understood. This study explores the thermocatalytic removal of acetaldehyde (CH3CHO) over Pt supported on three TiO2 polymorphs: anatase, rutile, and brookite. CH3CHO mineralization at 160 °C follows the trend: Pt-anatase (99.5%) > Pt-rutile (79.3%) > Pt-brookite (56.7%). These differences correlate with the oxygen adsorption and active oxygen generation capabilities, as evidenced by electrochemical analyses and O2-temperature-programmed desorption. Density functional theory calculations further indicate that Pt supported on anatase has the highest negative charge density, which significantly enhances the formation of active oxygen species. In situ FTIR spectroscopy provides additional evidence by revealing distinct CH3CHO oxidation pathways: *HCOOH on Pt-anatase and Pt-brookite, and *CH3COOH on Pt-rutile. Despite sharing a similar pathway, Pt-anatase displayed faster kinetics due to a higher abundance of surface-active oxygen species. This study highlights the pivotal role of TiO2 polymorphs in shaping metal–support interactions and provides critical insights for designing efficient Pt-based catalysts for thermocatalytic VOC abatement.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"5 3","pages":"743–755 743–755"},"PeriodicalIF":7.4,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143608839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ion Transport Channels Created by Anion Exchange Resin in Four-Chamber Flow Electrode Capacitive Deionization Enable Efficient Phosphorus Removal 负离子交换树脂在四室流动电极电容去离子中形成离子传输通道，实现高效除磷

IF 7.4

ACS ES&T engineering Pub Date : 2024-12-16 DOI: 10.1021/acsestengg.4c0072710.1021/acsestengg.4c00727

Shuai Chen, Fan Yang, Sha Liang*, Mingxuan Wen, Zhengkang Zou, Shushan Yuan, Huabo Duan, Wenbo Yu, Jingping Hu and Jiakuan Yang,

{"title":"Ion Transport Channels Created by Anion Exchange Resin in Four-Chamber Flow Electrode Capacitive Deionization Enable Efficient Phosphorus Removal","authors":"Shuai Chen, Fan Yang, Sha Liang*, Mingxuan Wen, Zhengkang Zou, Shushan Yuan, Huabo Duan, Wenbo Yu, Jingping Hu and Jiakuan Yang, ","doi":"10.1021/acsestengg.4c0072710.1021/acsestengg.4c00727","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00727https://doi.org/10.1021/acsestengg.4c00727","url":null,"abstract":"Flow electrode capacitive deionization (FCDI) technology can achieve effective phosphorus (P) removal from wastewater. In this study, a four-chamber FCDI (noted as F-FCDI) system was employed to systematically investigate the effects of P concentrations and pH values of the influent on P removal. It was observed that low influent P concentrations (p ≤ 500 mg/L) and low pH (pH < 2.5) significantly reduced the average phosphorus removal rate (APRR) and charge efficiency (CE) of F-FCDI. To address this issue, a FAD-FCDI system was developed by incorporating anion exchange resin into the diluate chamber of the F-FCDI system. Compared to the F-FCDI system, the FAD-FCDI system showed a 97.3–45.8% increase in APRR and a 103.4–40.0% increase in CE at the influent P concentration of 50–500 mg/L and a 57.3–33.5% increase in APRR and a 51.2–17.3% increase in CE at a pH of 1.6–2.5. The ion transport channels created by the anion exchange resins in the FAD-FCDI system are pivotal for maintaining ion conductivity at low P concentrations. The H+ exclusion effect, along with rapid adsorption of H2PO4– of resin, facilitates the conversion of nonionic H3PO4 to H2PO4– with rapid transportation ability at low pH. The complete mechanisms of electron transfer and ion transport in the FAD-FCDI system were elucidated. This study provides an energy-efficient strategy for the continuous removal of P from wastewater by an FCDI system.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"5 4","pages":"899–909 899–909"},"PeriodicalIF":7.4,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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 Metronidazole by In Situ High-Valent Iron-Oxo Species in Nanoclustered Iron–Carbon Particles 纳米簇状铁碳颗粒中原位价铁氧高效降解甲硝唑的研究

IF 7.4

ACS ES&T engineering Pub Date : 2024-12-12 DOI: 10.1021/acsestengg.4c0063710.1021/acsestengg.4c00637

Chengjie Xue, Zhanqiang Fang* and Yifu Peng,

{"title":"Efficient Degradation of Metronidazole by In Situ High-Valent Iron-Oxo Species in Nanoclustered Iron–Carbon Particles","authors":"Chengjie Xue, Zhanqiang Fang* and Yifu Peng, ","doi":"10.1021/acsestengg.4c0063710.1021/acsestengg.4c00637","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00637https://doi.org/10.1021/acsestengg.4c00637","url":null,"abstract":"High-valent metal species are selective, nonradical species that can enhance advanced oxidation processes (AOPs) for the treatment of difficult-to-degrade pollutants due to their long lifetimes and high steady-state concentrations. As the number of particles in the cluster material increases, high-valent metal sites appear inside the clusters. The special high-valent metal species inside the cluster materials enhance the removal of pollutants, but the mechanism of the role of the cluster materials in the AOPs is not clear. In this paper, nanoclustered iron–carbon particles (BAGAFe) were prepared by carbothermal reduction with gallic acid (GA) as an iron complexing reagent. Low-cost batch preparation of nano zerovalent iron and activated oxidative degradation of metronidazole (MNZ) by peroxydisulfate (PDS) with low dissolved iron (<0.9 mg/L) were achieved. Spectroscopic studies and 18O isotope labeling experiments demonstrated the presence of high-valent iron-oxo species (FeIV═O). Calculation and analysis of steady-state concentrations of various reactive oxygen species (ROSs) demonstrated that FeIV═O contributed 77.8% to the degradation of MNZ. Density functional theory (DFT) and degradation products showed that FeIV═O is the main ROS involved in the degradation of MNZ. This study provides new insight into the preparation of clustered iron–carbon materials and their generation of FeIV═O in activated PDS.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"5 3","pages":"691–700 691–700"},"PeriodicalIF":7.4,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143608838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of NO Concentration on the Biological Conversion From NO to N2O under Thermophilic Conditions NO浓度对嗜热条件下NO向N2O生物转化的影响

IF 7.4

ACS ES&T engineering Pub Date : 2024-12-11 DOI: 10.1021/acsestengg.4c0038610.1021/acsestengg.4c00386

Dan Li, George Wells, Wei Liu, Marvin Yeung, Lishan Niu and Jinying Xi*,

{"title":"Effect of NO Concentration on the Biological Conversion From NO to N2O under Thermophilic Conditions","authors":"Dan Li, George Wells, Wei Liu, Marvin Yeung, Lishan Niu and Jinying Xi*, ","doi":"10.1021/acsestengg.4c0038610.1021/acsestengg.4c00386","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00386https://doi.org/10.1021/acsestengg.4c00386","url":null,"abstract":"Recently, some research has explored the production of nitrous oxide (N2O) through biological denitrification of NO derived from flue gas under both mesophilic and thermophilic conditions. However, the effects of the NO concentration on N2O production and its optimal range for thermophilic conditions remain unclear. In this study, we explored the effects of the NO concentration on the biological conversion of NO to N2O at 45 °C using flask tests. The highest conversion efficiency from NO to N2O was 92%, with 1.3 × 105 mg/m3 N2O detected in the headspace at an initial NO concentration of 20 mM in the solution. The ratio of NO reductase to N2O reductase (NOR/N2OR) peaked at a NO concentration of 20 mM. 16S rRNA gene sequencing analysis highlighted a positive correlation between Escherichia-Shigella and Propionicicella with N2O accumulation. Metagenome analysis results further indicate that Escherichia possesses norVWR genes but not nos genes, enabling conversion of NO to N2O rather than N2, which is distinct from the typical denitrifying genes norBC. This study demonstrated that the optimal NO concentration range is 10–20 mM under thermophilic conditions and identified a unique denitrifier with special functional genes that contribute to N2O accumulation. These findings could deepen our understanding of the mechanism of biological conversion from NO to N2O and help to develop a biological N2O production process for flue gas emission control and reclamation.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"5 2","pages":"344–357 344–357"},"PeriodicalIF":7.4,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Biomass Hydrogel Solar-Driven Multifunctional Evaporator for Desalination, VOC Removal, and Sterilization 生物质水凝胶太阳能驱动的多功能蒸发器，用于海水淡化，VOC去除和灭菌

IF 7.4

ACS ES&T engineering Pub Date : 2024-12-11 DOI: 10.1021/acsestengg.4c0065210.1021/acsestengg.4c00652

Ning An, Mengyu Ma, Yi Chen, Zhining Wang and Qian Li*,

{"title":"Biomass Hydrogel Solar-Driven Multifunctional Evaporator for Desalination, VOC Removal, and Sterilization","authors":"Ning An, Mengyu Ma, Yi Chen, Zhining Wang and Qian Li*, ","doi":"10.1021/acsestengg.4c0065210.1021/acsestengg.4c00652","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00652https://doi.org/10.1021/acsestengg.4c00652","url":null,"abstract":"Solar-driven photothermal interfacial evaporation technology is currently perceived as one of the most green and effective freshwater production strategies available. However, when dealing with actual complex water bodies, it remains a challenge to combine steam generation with removing volatile organic compounds (VOCs) and inactivating bacteria at the same time to achieve multiple water purification effects. In this paper, a solar evaporator (SA/CCC/Cu2+) integrating photothermal and photocatalytic effects was successfully constructed by using a Cu2+ cross-linked biomass sodium alginate (SA) hydrogel as the basic skeleton and carbonized carboxymethyl chitosan (CCC) embedded internally as the photothermal material. During the solar evaporation process, the SA/CCC/Cu2+ evaporator successfully realized the separation of distilled water from bulk water containing VOCs, achieving the VOC removal efficiency of 96.77% while maintaining an evaporation rate of 2.54 kg m–2 h–1. In addition, it demonstrated remarkable capacity in inactivating Escherichia coli (E. coli), eliminating 100% of the bacteria within 40 min. With the rapid evaporation rate and impressive water purification effect, this design is anticipated to be a new path for solar-driven interfacial evaporative freshwater production.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"5 3","pages":"732–742 732–742"},"PeriodicalIF":7.4,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143608837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Biochar and Granular Activated Carbon Mitigate Polystyrene Nanoplastics Inhibition in Dark Biohydrogen Fermentation of Sludge 生物炭和颗粒活性炭减轻聚苯乙烯纳米塑料对污泥暗生氢发酵的抑制作用

IF 7.4

ACS ES&T engineering Pub Date : 2024-12-11 DOI: 10.1021/acsestengg.4c0056510.1021/acsestengg.4c00565

Monisha Alam, Simran Kaur Dhillon, Sherif Ismail and Bipro Ranjan Dhar*,

{"title":"Biochar and Granular Activated Carbon Mitigate Polystyrene Nanoplastics Inhibition in Dark Biohydrogen Fermentation of Sludge","authors":"Monisha Alam, Simran Kaur Dhillon, Sherif Ismail and Bipro Ranjan Dhar*, ","doi":"10.1021/acsestengg.4c0056510.1021/acsestengg.4c00565","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00565https://doi.org/10.1021/acsestengg.4c00565","url":null,"abstract":"Nano/microplastics (NPs/MPs) are commonly found in sewage sludge, which leads to their unavoidable introduction into anaerobic bioreactors used for the fermentation or digestion of sludge in bioenergy recovery processes. This results in oxidative stress on the microbiome, ultimately hindering energy recovery. This study investigates the efficacy of biochar (BC) and granular activated carbon (GAC) in enhancing the dark hydrogen fermentation of primary sludge while mitigating the inhibitory effects of polystyrene nanoplastics (PsNPs). Comprehensive analyses included volatile fatty acid production, microbial community, toxicity, reactive oxygen species (ROS) generation, and sludge dewaterability. For the sludge without PsNPs, the highest enhancement (22.4% over the control) in biohydrogen production was obtained for 5 g/L BC. However, GAC performed better than BC by achieving the highest recovery (64.3%) of biohydrogen production by reducing ROS and toxicity from PsNPs. The abundance of Firmicutes in BC- and GAC-amended reactors was linked to higher biohydrogen yields. Also, BC and GAC significantly reduced the prolonged capillary suction times observed in the PsNPs-containing reactors, demonstrating their effectiveness in enhancing the sludge dewaterability. These findings demonstrate the potential of carbonaceous additives, such as BC and GAC, to deliver multiple benefits, including boosting biohydrogen production and mitigating the inhibitory effects of PsNPs.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"5 2","pages":"487–499 487–499"},"PeriodicalIF":7.4,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143402107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0