ACS ES&T engineering最新文献

{"title":"Machine Learning toward Realizing End-to-End Biochar Design for Environmental Remediation","authors":"Rupeng Wang,&nbsp;Honglin Chen,&nbsp;Silin Guo,&nbsp;Zixiang He,&nbsp;Nanqi Ren and Shih-Hsin Ho*,&nbsp;","doi":"10.1021/acsestengg.4c0026710.1021/acsestengg.4c00267","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00267https://doi.org/10.1021/acsestengg.4c00267","url":null,"abstract":"<p >Developing algorithmic methodologies for the rational design of environmental functional materials enables targeted approaches to environmental challenges. Novel machine learning (ML) tools are instrumental in realizing this goal, particularly when biochars are involved with complex components and flexible internal structures. However, such rational design necessitates a holistic perspective across the entire multistage design process, while current ML endeavors for environmental biochar (EB) often concentrate on specific production or application substages. In this regard, taking an end-to-end (E2E) approach to applying ML holds the potential to better guide EB design from a comprehensive view, a perspective yet to be thoroughly explored and summarized. Thus, we review the recent advancements of ML employed in predicting EB problems, aiming to elucidate the broad relevance of various ML models in realizing the E2E design of EBs. It is observed that the properties of EB might be the “Achilles’ heel” within the data set, which poses a significant challenge to achieving the E2E. Furthermore, we also provide an overview of the existing pathways to achieve the E2E, examining both traditional ML and the emerging field of deep leaning, followed by a discussion on key challenges, opportunities, and our vision for the future of rational EB design.</p>","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":null,"pages":null},"PeriodicalIF":7.4,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142407654","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}

{"title":"Mechanochemical Synthesis of Manganese-Modified Microscale Zerovalent Iron for Efficient Cr(VI) Removal: Performance and Mechanism","authors":"Kai He, Yuanfang Lai, Shuchen Wang, Li Gong, Feng He","doi":"10.1021/acsestengg.4c00316","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00316","url":null,"abstract":"Metal doping for improving the reactivity of zerovalent iron (ZVI) has been well studied, while Mn(II)-modified microscale ZVI (Mn-mZVI) has not yet been explored. Herein, ball-milled Mn-mZVI was fabricated and used for Cr(VI) removal. Characterization analysis showed that the structure, composition, and charge of mZVI changed after the Mn(II) modification. The comparative test showed that Mn-mZVI could remove 100% of Cr(VI) within 10 min, whereas mZVI removed negligible Cr(VI) within 60 min. The zeta-potential and electrochemical evidence verified that the enhanced electrostatic attraction and electron-transfer ability contributed to the superior Cr(VI) removal performance of Mn-mZVI. Moreover, the solution pH increase caused the decline of Cr(VI) removal, and the presence of NO₃^– inhibited Cr(VI) removal, whereas other coexisting ions showed little influence on the Cr(VI) removal performance of Mn-mZVI. Chemical and material characterization analyses revealed that Cr(VI) reduction by Mn-mZVI was the combined action of Fe(0) and generated Fe(II). In addition, the reusability of Mn-mZVI was not ideal due to the surface passivation and loss of Mn(II), but the reactivity could be reactivated by ball-milling the reacted Mn-mZVI again with Mn(II). Overall, this work provides a new mentality for mZVI modification and is important to develop promising mZVI-based materials for Cr(VI) pollution control.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":null,"pages":null},"PeriodicalIF":7.1,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142256049","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}

{"title":"Machine Learning toward Realizing End-to-End Biochar Design for Environmental Remediation","authors":"Rupeng Wang, Honglin Chen, Silin Guo, Zixiang He, Nanqi Ren, Shih-Hsin Ho","doi":"10.1021/acsestengg.4c00267","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00267","url":null,"abstract":"Developing algorithmic methodologies for the rational design of environmental functional materials enables targeted approaches to environmental challenges. Novel machine learning (ML) tools are instrumental in realizing this goal, particularly when biochars are involved with complex components and flexible internal structures. However, such rational design necessitates a holistic perspective across the entire multistage design process, while current ML endeavors for environmental biochar (EB) often concentrate on specific production or application substages. In this regard, taking an end-to-end (E2E) approach to applying ML holds the potential to better guide EB design from a comprehensive view, a perspective yet to be thoroughly explored and summarized. Thus, we review the recent advancements of ML employed in predicting EB problems, aiming to elucidate the broad relevance of various ML models in realizing the E2E design of EBs. It is observed that the properties of EB might be the “Achilles’ heel” within the data set, which poses a significant challenge to achieving the E2E. Furthermore, we also provide an overview of the existing pathways to achieve the E2E, examining both traditional ML and the emerging field of deep leaning, followed by a discussion on key challenges, opportunities, and our vision for the future of rational EB design.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":null,"pages":null},"PeriodicalIF":7.1,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142256050","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}

{"title":"ACS ES&T Engineering’s 2023 Excellence in Review Awards","authors":"Wonyong Choi,&nbsp;","doi":"10.1021/acsestengg.4c0054510.1021/acsestengg.4c00545","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00545https://doi.org/10.1021/acsestengg.4c00545","url":null,"abstract":"","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":null,"pages":null},"PeriodicalIF":7.4,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142228310","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}

{"title":"Chemolysis for Efficient and Sustainable Upcycling of Biodegradable Polyester Waste to Value-Added Products","authors":"Xin Gao, Huayi Shen, Chun-Ran Chang","doi":"10.1021/acsestengg.4c00376","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00376","url":null,"abstract":"It is well-known that conventional disposable plastics, such as polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), polyvinyl chloride (PVC), and polystyrene (PS), are causing “white pollution” and becoming one of the greatest challenges to the natural environment worldwide. To overcome severe environmental pollution, policy makers have introduced a series of regulations to reduce and replace the utilization of conventional nonbiodegradable plastics, for instance, guiding plastic manufactories to produce biodegradable (or compostable) plastics instead of conventional nonbiodegradable plastics, banning markets from using or selling conventional nonbiodegradable plastics, and calling on citizens to use and even reuse biodegradable plastics for various applications (including shopping bags and boxes, catering materials, agricultural mulching film, medical devices, etc.). By far, the most common state-of-the-art biodegradable polyester plastics in markets are polylactic acid (PLA), polyhydroxyalkanoates (PHA), polybutylene adipate coterephthalate (PBAT), polyglycolic acid (PGA), polycaprolactone (PCL), polybutylene succinate (PBS), and polypropylene carbonate (PPC) (Figure 1). It is noteworthy that these novel polyesters usually contain sizable ester groups. On the basis of the different physical properties (e.g., melting point, stretchability, percentage of elongation, gas resistance, etc.) and chemical properties (e.g., molecular structures, molecular weights, oxygen and carbon contents, etc.) of these novel polyesters, their functionalities could be adopted in a wide range of industrial and consumer sectors. Figure 1. State-of-the-art emerging polyester plastics and their chemical structures, biological degradation process, and chemolytic valorizations. Theoretically, there should be no further concerns about the end life of biodegradable plastic waste because these types of polyesters are expected to be biologically and completely decomposed quickly into small molecules (e.g., water, carbon dioxide, and methane). However, practically, the realistic situation is that such biological degradation (biodegradation) of biodegradable plastics is strictly conditional, where suitable biodegradation factors must be reached, including temperature, humidity, quality and quantity of microorganisms, large-scale industrial or homemade composting plant, intrinsic degradation properties, etc. In other words, biological decomposition is not spontaneous. Therefore, the utilization of biodegradable plastics cannot guarantee that the plastic pollution issue can be readily and automatically resolved. Considering the fast-growing momentum of biodegradable polyester plastic utilization and the subsequent rapid increase in the amount of biodegradable plastic waste, the current implementation status of the treatment facilities for biodegradable plastics (i.e., industrial composting plant) still lags behind the growth in the use of biodegradable plasti","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":null,"pages":null},"PeriodicalIF":7.1,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142256094","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}

{"title":"Phosphate Uptake over the Innovative La–Fe–CNT Membrane: Structure-Activity Correlation and Mechanism Investigation","authors":"Yi Yang, Xintong You, Shuo Tang, Ying Li, Minyi Liu, Ying Mei, Wei Shu","doi":"10.1021/acsestengg.4c00321","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00321","url":null,"abstract":"Eutrophication caused by excessive phosphorus pollution not only brings a series of environmental problems but also threatens biological safety. The adsorption method has been widely used for preventing eutrophication due to its high selectivity, environmental friendliness, easy operation, and cost-effectiveness. In this study, an easily separated magnetic lanthanum and iron-fabricated carbon nanotube (La–Fe–CNT) membrane was synthesized by a simple combined impregnation and vacuum filtration method for highly effective phosphate uptake. Characterization results show that metallic (hydr)oxide species were successfully fabricated on the CNT membrane, and phosphate was absorbed on it. The structure-activity correlation of La–Fe–CNT was quantitatively investigated by the Box–Behnken design model, and the following optimized conditions were obtained: a reaction temperature of 44 °C, synthesis time of 14.3 h, and La molar ratio of 0.53, with an adsorption capacity of 127 mg/g. La–Fe–CNT performs well over a wide pH range (142 mg/g at pH 2) with high stability (less than 2 mg/L metal leaching). Three interactions exist during the adsorption process, including electrostatic interactions, ligand exchange, and Lewis acid–base interactions. A kinetic study shows that the phosphate adsorption process is a physical-chemical process with combined intraparticle and surface film diffusion. The equilibrium phosphate adsorption capacity of La–Fe–CNT in the isotherm study is 120.2 mg/g, and the phosphate uptake process involves a complex process including both Langmuir and Freundlich adsorption. The adsorbent still retains nearly 70% of its original capacity after 5 cycles of operation, depicting its stability and sustainability for potential industrial applications.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":null,"pages":null},"PeriodicalIF":7.1,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142256093","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}

{"title":"Mass Transfer Mechanisms and Decolorization Kinetics of the Mixed Azo Dyes","authors":"Khalida Muda,&nbsp;Mohamad Ali Fulazzaky*,&nbsp;Tiffany Messer,&nbsp;Ahmad Hanis Omar and Armstrong Ighodalo Omoregie,&nbsp;","doi":"10.1021/acsestengg.4c0025810.1021/acsestengg.4c00258","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00258https://doi.org/10.1021/acsestengg.4c00258","url":null,"abstract":"<p >The treatment of dye-contaminated wastewater using granular sludge was evaluated to ensure an effective design process for biogranulation technology. The investigation of dye-contaminated wastewater treatment in a sequencing batch reactor (SBR) aimed to understand the decolorization of mixed azo dyes (MAD) mediated by aerobic granular sludge (AGS) and magnetic-activated carbon aerobic granular sludge (MACAGS). The applicability of Generalized Fulazzaky equations was expanded to predict the mechanisms and kinetics of global, external, and internal mass transfer. The performance of SBR in decolorizing MAD with AGS and MACAGS reached 65.04% and 82.32% efficiency, respectively, exhibiting an increased efficiency of 17.28% (82.32–65.04%) with the presence of magnetic-activated carbon (MAC) in the formation of AGS. A trend in the variation of the internal mass transfer factor was similar to that of the global mass transfer factor and was far higher than that of the external mass transfer factor, indicating that the rate-limiting step of MAD decolorization was dependent on the resistance of external mass transfer. An analysis of the decolorization efficiency based on the internal mass transfer factor provided new insights into the role of MAC in enhancing the SBR performance, contributing to the advanced treatment of dye-contaminated wastewater.</p>","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":null,"pages":null},"PeriodicalIF":7.4,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142407743","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}

{"title":"Mass Transfer Mechanisms and Decolorization Kinetics of the Mixed Azo Dyes","authors":"Khalida Muda, Mohamad Ali Fulazzaky, Tiffany Messer, Ahmad Hanis Omar, Armstrong Ighodalo Omoregie","doi":"10.1021/acsestengg.4c00258","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00258","url":null,"abstract":"The treatment of dye-contaminated wastewater using granular sludge was evaluated to ensure an effective design process for biogranulation technology. The investigation of dye-contaminated wastewater treatment in a sequencing batch reactor (SBR) aimed to understand the decolorization of mixed azo dyes (MAD) mediated by aerobic granular sludge (AGS) and magnetic-activated carbon aerobic granular sludge (MACAGS). The applicability of Generalized Fulazzaky equations was expanded to predict the mechanisms and kinetics of global, external, and internal mass transfer. The performance of SBR in decolorizing MAD with AGS and MACAGS reached 65.04% and 82.32% efficiency, respectively, exhibiting an increased efficiency of 17.28% (82.32–65.04%) with the presence of magnetic-activated carbon (MAC) in the formation of AGS. A trend in the variation of the internal mass transfer factor was similar to that of the global mass transfer factor and was far higher than that of the external mass transfer factor, indicating that the rate-limiting step of MAD decolorization was dependent on the resistance of external mass transfer. An analysis of the decolorization efficiency based on the internal mass transfer factor provided new insights into the role of MAC in enhancing the SBR performance, contributing to the advanced treatment of dye-contaminated wastewater.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":null,"pages":null},"PeriodicalIF":7.1,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204227","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}

{"title":"Anaerobic Acidogenesis Improvement and Fermentation-Type Regulation by Quorum Sensing","authors":"Shunan Zhao,&nbsp;Ge Song,&nbsp;Suo Liu,&nbsp;Jing Zhao,&nbsp;Kai Zhao,&nbsp;Shaoqing Zhu,&nbsp;Yufei Zeng,&nbsp;Ruiping Liu*,&nbsp;Huijuan Liu and Jiuhui Qu,&nbsp;","doi":"10.1021/acsestengg.4c0022010.1021/acsestengg.4c00220","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00220https://doi.org/10.1021/acsestengg.4c00220","url":null,"abstract":"<p >Anaerobic fermentation of organic wastewater is expected to produce short-chain fatty acids that are available as carbon sources for nitrogen and phosphorus removal in wastewater treatment. By long-term semicontinuous experiments, this study indicated that the introduction of exogenous <i>N</i>-acyl-homoserine lactone (AHL), a quorum sensing (QS) molecule, improved acidogenesis capacity and regulated fermentation type even at low pH. The product concentration increased from 13.5 gCOD/L in the control to 19.9 gCOD/L in the QS enhancement system. Moreover, the acidogenesis pathway related to acetyl-CoA, butyrate, and caproate production was also more highly expressed based on metagenomic sequencing accordingly. Notably, the introduction of exogenous AHL improved chain elongation (CE) during anaerobic fermentation and resulted in a 2.6-fold increase in caproate concentrations. Additionally, the abundance of caproate producers was also increased by 2.0–3.6 folds in the QS enhancement system. Metagenomic analysis results indicated that QS boosted the reverse β-oxidation pathways, and the higher acidogenesis pathway provided more lactate and butyrate available for CE. Importantly, QS enhancement upregulated genes associated with the detection of the typical acid stress signal. Concurrently, three typical acid stress resistance pathways, i.e., proton-consuming reactions, protons efflux, and extracellular polymeric substance production, were activated and highly expressed. Overall, this study proposes a novel strategy to improve microbial resistance to acidic conditions and to regulate the microbial community through QS enhancement and is potentially valuable to enhance resources and energy recovery by anaerobic fermentation.</p>","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":null,"pages":null},"PeriodicalIF":7.4,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142450588","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}

{"title":"Anaerobic Acidogenesis Improvement and Fermentation-Type Regulation by Quorum Sensing","authors":"Shunan Zhao, Ge Song, Suo Liu, Jing Zhao, Kai Zhao, Shaoqing Zhu, Yufei Zeng, Ruiping Liu, Huijuan Liu, Jiuhui Qu","doi":"10.1021/acsestengg.4c00220","DOIUrl":"https://doi.org/10.1021/acsestengg.4c00220","url":null,"abstract":"Anaerobic fermentation of organic wastewater is expected to produce short-chain fatty acids that are available as carbon sources for nitrogen and phosphorus removal in wastewater treatment. By long-term semicontinuous experiments, this study indicated that the introduction of exogenous <i>N</i>-acyl-homoserine lactone (AHL), a quorum sensing (QS) molecule, improved acidogenesis capacity and regulated fermentation type even at low pH. The product concentration increased from 13.5 gCOD/L in the control to 19.9 gCOD/L in the QS enhancement system. Moreover, the acidogenesis pathway related to acetyl-CoA, butyrate, and caproate production was also more highly expressed based on metagenomic sequencing accordingly. Notably, the introduction of exogenous AHL improved chain elongation (CE) during anaerobic fermentation and resulted in a 2.6-fold increase in caproate concentrations. Additionally, the abundance of caproate producers was also increased by 2.0–3.6 folds in the QS enhancement system. Metagenomic analysis results indicated that QS boosted the reverse β-oxidation pathways, and the higher acidogenesis pathway provided more lactate and butyrate available for CE. Importantly, QS enhancement upregulated genes associated with the detection of the typical acid stress signal. Concurrently, three typical acid stress resistance pathways, i.e., proton-consuming reactions, protons efflux, and extracellular polymeric substance production, were activated and highly expressed. Overall, this study proposes a novel strategy to improve microbial resistance to acidic conditions and to regulate the microbial community through QS enhancement and is potentially valuable to enhance resources and energy recovery by anaerobic fermentation.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":null,"pages":null},"PeriodicalIF":7.1,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204228","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}