ACS ES&T engineering最新文献_第3页

Sustainable Removal of Aqueous Hg(II) by Zeolitic Imidazolate Framework-Derived Co/NC Using Optimized Thermal Desorption

IF 7.4

ACS ES&T engineering Pub Date : 2025-01-04 DOI: 10.1021/acsestengg.4c0062610.1021/acsestengg.4c00626

Meiirzhan Nurmyrza, Seunghee Han and Woojin Lee*,

{"title":"Sustainable Removal of Aqueous Hg(II) by Zeolitic Imidazolate Framework-Derived Co/NC Using Optimized Thermal Desorption","authors":"Meiirzhan Nurmyrza, Seunghee Han and Woojin Lee*, ","doi":"10.1021/acsestengg.4c0062610.1021/acsestengg.4c00626","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00626https://doi.org/10.1021/acsestengg.4c00626","url":null,"abstract":"The effectiveness of materials in aqueous contaminant treatment technologies by sorptive removal relies on their ability to be reused and their removal efficiency. Thermal desorption stands out as a promising method to improve the reusability of these materials. In this study, Zeolitic Imidazolate Framework-67 (ZIF-67) derived Cobalt N-Doped Carbon (Co/NC) and metal-impregnated (Ru, Pt, and Pd) Co/NC nanoparticles have been synthesized and tested for the effective removal of aqueous Hg(II) and its reusability by thermal desorption. Reduced Co/NC efficiently removed Hg(II), adsorbing 99.9% of aqueous Hg(II) in 2.5 min through pyridinic-N adsorption sites and Co0 reducing Hg(0) on the surface. The testing of various metals (Ru, Pt, and Pd) on the surface of Co/NC showed that Pd(4%)-Co/NC achieved the highest reactivity with a maximum adsorption capacity of 49.93 mgg–1 using the Langmuir model. Pd(8%)-Co/NC showed the highest adsorbed Hg(0) (79.1%) and fastest removal kinetics (135.52 g mg–1 min–1). The Pd(4%)-Co/NC catalyst retained its durability and stability, eliminating 99.9% of the aqueous Hg species throughout 10 consecutive cycles. The 80.11% and 85.4% of adsorbed Hg were recovered by thermal desorption at 500 °C on Pd(4%)-Co/NC and Co/NC surfaces, respectively. Pd(4%)-Co/NC displayed notable promise as a sustainable catalyst for Hg(II) reductive removal in wastewater treatment technologies, emphasizing its enduring effectiveness and reuse potential for practical engineering applications.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"5 3","pages":"678–690 678–690"},"PeriodicalIF":7.4,"publicationDate":"2025-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsestengg.4c00626","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143609020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Insights into the Degradability of Poly(lactic acid) and Its Association with the Bacterial Community in a Simulated Industrial Food Waste Composting System

IF 7.4

ACS ES&T engineering Pub Date : 2025-01-02 DOI: 10.1021/acsestengg.4c0059510.1021/acsestengg.4c00595

Guangyu Cui, Xiaoyi Wu, Xuyang Lei, Ning Wang, Fan Lü, Pinjing He and Qiyong Xu*,

{"title":"Insights into the Degradability of Poly(lactic acid) and Its Association with the Bacterial Community in a Simulated Industrial Food Waste Composting System","authors":"Guangyu Cui, Xiaoyi Wu, Xuyang Lei, Ning Wang, Fan Lü, Pinjing He and Qiyong Xu*, ","doi":"10.1021/acsestengg.4c0059510.1021/acsestengg.4c00595","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00595https://doi.org/10.1021/acsestengg.4c00595","url":null,"abstract":"The environmental risk associated with bioplastics has garnered increasing attention. However, their fates and the driving mechanisms in industrial composting engineering, which is a primary method for treating food waste, remain unclear. This study delved into the degradation behaviors of poly(lactic acid) (PLA) and its correlation with the PLA-associated bacterial communities in simulated food waste composting systems with and without the addition of a microbial agent (MA). The results derived from the water contact angle and molecular weight (Mn) analyses indicate that composting exhibited a limited degradation capacity for the polymer. The addition of the microbial agent (MA) demonstrated a promoting effect, leading to final Mn values of 8970 g·mol–1 for the treatment group and 19,324 g·mol–1 for the control group, compared to an initial Mn of 50,136 g·mol–1 for the polymer. The influence of composting on PLA-associated bacterial communities manifested in the later stages of composting, showing a lower diversity (Shannon index of 4.11) compared to the compost (4.50). The supplementation of MA facilitated the development of biofilms within the plastisphere, resulting in an increased level of presence of functional bacteria crucial for PLA degradation. This study sheds light on the underlying mechanisms of PLA degradation under typical food waste composting conditions, providing crucial insights into the effective handling and risk evaluation of bioplastics in composting environments.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"5 2","pages":"531–540 531–540"},"PeriodicalIF":7.4,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143402379","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

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

Response of Exogenous and Indigenous Microorganisms in Alleviating Acetate–Ammonium Coinhibition during Thermophilic Anaerobic Digestion

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

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

Efficient Degradation of Metronidazole by In Situ High-Valent Iron-Oxo Species in Nanoclustered Iron–Carbon Particles

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

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

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

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

Pore Wetting and Compaction in Pressure-Driven Distillation: Insights from Impedance Spectroscopy

IF 7.4

ACS ES&T engineering Pub Date : 2024-12-02 DOI: 10.1021/acsestengg.4c0064410.1021/acsestengg.4c00644

Kian P. Lopez, Martin Nguyen, Dylan P. McNally, Sasha R. Neefe, Chunmei Ban* and Anthony P. Straub*,

{"title":"Pore Wetting and Compaction in Pressure-Driven Distillation: Insights from Impedance Spectroscopy","authors":"Kian P. Lopez, Martin Nguyen, Dylan P. McNally, Sasha R. Neefe, Chunmei Ban* and Anthony P. Straub*, ","doi":"10.1021/acsestengg.4c0064410.1021/acsestengg.4c00644","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00644https://doi.org/10.1021/acsestengg.4c00644","url":null,"abstract":"Pressure-driven distillation (PD) is a desalination process that uses applied hydraulic pressure to drive water vapor through an air-trapping porous hydrophobic membrane. Unlike distillation processes that rely on heat, PD leverages applied pressure, making it more energy-efficient and allowing it to operate in a similar form factor as other pressure-driven processes like reverse osmosis. However, the high pressures required for PD operation─typically exceeding 10 bar─make membranes vulnerable to wetting and compaction. In this study, we employ electrochemical impedance spectroscopy to analyze compaction and wetting behavior in distillation membranes subjected to pressures up to 15.2 bar. We examine six different hydrophobic membranes made from poly(tetrafluoroethylene) and poly(vinylidene fluoride), identifying correlations between membrane morphology, applied pressure, and wetting mechanisms through highly sensitive impedance measurements. Our findings show significant compaction effects during the initial pressure increase, followed by progressive pressure-induced pore wetting as pressure rises, both in the presence and absence of surfactants. We also develop and validate an equivalent circuit model that represents air-trapping hydrophobic membranes. Overall, this research offers valuable insights into the dynamics of membrane wetting under pressure and demonstrates that impedance measurements can potentially serve as a critical control point for water treatment systems.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"5 3","pages":"714–723 714–723"},"PeriodicalIF":7.4,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143608842","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