{"title":"A Perspective of Solid-State Fermentation As Emergent Technology for Organic Waste Management in the Framework of Circular Bioeconomy","authors":"Antoni Sánchez","doi":"10.1021/acssusresmgt.4c00062","DOIUrl":"https://doi.org/10.1021/acssusresmgt.4c00062","url":null,"abstract":"","PeriodicalId":100015,"journal":{"name":"ACS Sustainable Resource Management","volume":"77 21","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141798229","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":"A Perspective of Solid-State Fermentation As Emergent Technology for Organic Waste Management in the Framework of Circular Bioeconomy","authors":"Antoni Sánchez*, ","doi":"10.1021/acssusresmgt.4c0006210.1021/acssusresmgt.4c00062","DOIUrl":"https://doi.org/10.1021/acssusresmgt.4c00062https://doi.org/10.1021/acssusresmgt.4c00062","url":null,"abstract":"<p >Among the different technologies to treat and valorize organic waste, solid-state fermentation (SSF) is gaining relevance in recent years as it permits the recovery of valuable biomaterials from waste, changing the paradigm: “from waste to raw material source”. SSF is very similar to composting, as it implies the aerobic biodegradation of organic solid waste, but with the objective of obtaining bioproducts in some point of the process, although a compost-like end product may be also produced. Also, SSF can be coupled with anaerobic digestion, as solid digested materials can act as substrates for SSF, with a double benefit: renewable bioenergy and bioproducts. Among these bioproducts, SSF has moved from classical biotechnological compounds (enzymes or antibiotics) to more complex biomaterials, such as biopesticides, bioplastics, biosurfactants, or biostimulants, among others, which are now an emergent field of research and one of the main objectives of SSF. In summary, it is evident that SSF will have a predominant role in the framework of circular bioeconomy and in novel biorefineries for biowaste and wastewater sludge valorization, although some challenges still need further research (scale-up and down-stream).</p><p >In the framework of circular bioeconomy, solid-state fermentation emerges as a new biotechnology to change the paradigm: from waste to product, with a strong agreement with most of the Sustainable Development Goals.</p>","PeriodicalId":100015,"journal":{"name":"ACS Sustainable Resource Management","volume":"1 8","pages":"1630–1638 1630–1638"},"PeriodicalIF":0.0,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acssusresmgt.4c00062","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142020202","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}
Thang Luong, Chunlin Luo, Brandon Robinson, Jianli Hu and Yuxin Wang*,
{"title":"Microwave Catalytic Co-Upcycling of Polyethylene and Polystyrene","authors":"Thang Luong, Chunlin Luo, Brandon Robinson, Jianli Hu and Yuxin Wang*, ","doi":"10.1021/acssusresmgt.4c0011010.1021/acssusresmgt.4c00110","DOIUrl":"https://doi.org/10.1021/acssusresmgt.4c00110https://doi.org/10.1021/acssusresmgt.4c00110","url":null,"abstract":"<p >Microwave-assisted catalytic upcycling plastic wastes into valuable chemicals is a promising technology to treat plastic wastes. In this study, the catalytic upcycling of low-density polyethylene (LDPE), polystyrene (PS), and their mixture under microwave (MW) irradiation was explored. In comparison to conventional thermal conditions, MW heating produced significantly more BTX and achieved better conversion due to the “hotspots” formation over a catalyst. MW irradiation also lowered the activation energy for the catalytic pyrolysis of pure and mixed plastics. For mixed plastics, the <i>E</i><sub>a</sub> was reduced to 20.3 kJ/mol at MW conditions compared to 38.3 kJ/mol in conventional thermal heating. The synergistic mechanism between LDPE and PS for BTX production was proposed, in which aromatization occurred within the HZSM-5 channel and the presence of LDPE inhibited coking while PS provided the backbone for BTX formation.</p>","PeriodicalId":100015,"journal":{"name":"ACS Sustainable Resource Management","volume":"1 8","pages":"1750–1758 1750–1758"},"PeriodicalIF":0.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142020201","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}
Dheeraj Kumar, Sweety Rani, Blesson Tom Mathew, Rohit Kumar Chikara, Bhanu Nandan and Rajiv K. Srivastava*,
{"title":"Hydrothermal Pyrolysis of Styrofoam Waste for Efficient Copper Ion Sensing Using Graphene Quantum Dots","authors":"Dheeraj Kumar, Sweety Rani, Blesson Tom Mathew, Rohit Kumar Chikara, Bhanu Nandan and Rajiv K. Srivastava*, ","doi":"10.1021/acssusresmgt.4c0020210.1021/acssusresmgt.4c00202","DOIUrl":"https://doi.org/10.1021/acssusresmgt.4c00202https://doi.org/10.1021/acssusresmgt.4c00202","url":null,"abstract":"<p >The accelerating buildup of plastic waste, especially styrene foam, has become a major environmental problem. Traditional methods of recycling do not help in managing Styrofoam waste efficiently because of economic factors and minimal technological advancements available. Pyrolysis is one of the promising ways to transform styrenofoam wastes into value-added compounds with nominal emission of harmful gases. This research aims to explore the synthesis of graphene quantum dots (GQDs) from Styrofoam waste through hydrothermal pyrolysis and convert it into a high-utility, value-added product. The successful formation of GQDs was confirmed through multiple characterization techniques: transmission electron microscopy revealed a uniform size distribution of 6 ± 1 nm; dynamic light scattering confirmed all GQD samples were below 10 nm; Raman spectroscopy identified the presence of a single-layered graphene structure; and X-ray photoelectron spectroscopy demonstrated the incorporation of nitrogen and oxygen functionalities. The quantum yield of GQDs increased with increase in reaction temperature and the edge functionalities, giving a peak value of 1.87 as confirmed using photoluminescence and UV-Vis spectroscopy, indicating their suitability for enhanced optical performance. The synthesized GQDs were explored as sensors for the detection of heavy metal ions in water. The sensor showed versatility and efficacy for copper ions across different pH levels, water sources, and anions present in various copper salts. Ultimately the concentration of unknown copper ion solutions was calculated from GQD-sensor-based RGB studies, matching closely with UV-Vis spectroscopy values of the unknown solutions. This work demonstrates a promising approach for the pyrolysis-based treatment of plastic waste, contributing to waste management and sustainability efforts.</p>","PeriodicalId":100015,"journal":{"name":"ACS Sustainable Resource Management","volume":"1 8","pages":"1824–1833 1824–1833"},"PeriodicalIF":0.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142020200","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":"Tuning Interfacial Interaction Mechanisms of Ameliorated Surface-Active/π-Electron-Rich Designer Bioamphiphile via Environmental-Waste Bio-upcycling for Trace Bisphenol A Removal from Municipal Landfill Leachate","authors":"Maseed Uddin, Swathi Krishnan Venkatesan, Karthikeyan Sekar, Boopathy Ramasamy and Ramani Kandasamy*, ","doi":"10.1021/acssusresmgt.4c0008710.1021/acssusresmgt.4c00087","DOIUrl":"https://doi.org/10.1021/acssusresmgt.4c00087https://doi.org/10.1021/acssusresmgt.4c00087","url":null,"abstract":"<p >Bisphenol A (BPA) removal from municipal landfill leachate (MLL) matrices is impeded due to negative matrix interference effects and limited binding sites in existing sequestering agents. To address this conundrum, a novel surface-active/π-electron-rich designer lipopeptide bioamphiphile (DLB) was biomanufactured with abundant BPA-specific and anti-interference regulating functional sites for targeted removal of BPA from MLL. To achieve this, the aromatic π-electron-rich amino acids and surface-active fatty acids were screened from waste-activated sludge and poultry industry wastes, respectively, using thermal-alkali pre-treatment and were concurrently bio-upcycled in the domains of DLB via a de-novo substrate-dependent synthesis pathway employing <i>Bacillus tropicus</i> MK613141. The resulting DLB-anchored functionalized nanoporous activated bio-carbon (DLB-FNABC) exhibited high BPA sequestration affinity (<i>K</i><sub>L</sub> = 3.7 × 10<sup>6</sup> M<sup>–1</sup>; <i>Q</i><sub>m</sub> = 179 mg g<sup>–1</sup>) due to the synergistic binding sites in DLB. The cross-talk interaction study between DLB molecular chemistry and MLL matrix chemistry unveiled the intricate interplay of hydrogen bonding, π–π, cation−π, and hydrophobic interactions in enhanced BPA sequestration by DLB-FNABC. The solvent shielding experiment divulges the higher contribution of hydrophobic interaction (95.9 mg g<sup>–1</sup> DLB-FNABC) to BPA sequestration compared to the ∑hydrophilic interactions (83.1 mg g<sup>–1</sup> DLB-FNABC). Subsequently, DLB-FNABC when applied to real-time MLL matrix removed the majority of environmentally relevant BPA (>99% sequestration) at an applied dose of 30 mg L<sup>–1</sup> only. Thus, these findings highlight the potential for upcycling environmental waste to synthesize designer sequestering agents that can enhance BPA removal from MLL and safeguard groundwater resources.</p>","PeriodicalId":100015,"journal":{"name":"ACS Sustainable Resource Management","volume":"1 9","pages":"1962–1974 1962–1974"},"PeriodicalIF":0.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142318359","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}
K. Kaare, A. Volperts, A. Plavniece, Peter Walke, Tanel Käämbre, Navid Noor, Amir Foroozan, Drew Higgins, Reio Praats, Kerli Liivand, L. Tamašauskaitė-Tamašiūnaitė, L. Colmenares-Rausseo, Jaana Lilloja, K. Tammeveski, I. Kruusenberg
{"title":"Heteroatom-Doped Carbon Nanomaterials Derived from Black Liquor for Electrochemical Oxygen Reduction Reaction","authors":"K. Kaare, A. Volperts, A. Plavniece, Peter Walke, Tanel Käämbre, Navid Noor, Amir Foroozan, Drew Higgins, Reio Praats, Kerli Liivand, L. Tamašauskaitė-Tamašiūnaitė, L. Colmenares-Rausseo, Jaana Lilloja, K. Tammeveski, I. Kruusenberg","doi":"10.1021/acssusresmgt.4c00022","DOIUrl":"https://doi.org/10.1021/acssusresmgt.4c00022","url":null,"abstract":"","PeriodicalId":100015,"journal":{"name":"ACS Sustainable Resource Management","volume":"59 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141808714","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}
Kätlin Kaare*, Aleksandrs Volperts, Ance Plavniece, Peter Walke, Tanel Käämbre, Navid Noor, Amir Foroozan, Drew C. Higgins, Reio Praats, Kerli Liivand, Loreta Tamasauskaite-Tamasiunaite, Luis Colmenares-Rausseo, Jaana Lilloja, Kaido Tammeveski and Ivar Kruusenberg,
{"title":"Heteroatom-Doped Carbon Nanomaterials Derived from Black Liquor for Electrochemical Oxygen Reduction Reaction","authors":"Kätlin Kaare*, Aleksandrs Volperts, Ance Plavniece, Peter Walke, Tanel Käämbre, Navid Noor, Amir Foroozan, Drew C. Higgins, Reio Praats, Kerli Liivand, Loreta Tamasauskaite-Tamasiunaite, Luis Colmenares-Rausseo, Jaana Lilloja, Kaido Tammeveski and Ivar Kruusenberg, ","doi":"10.1021/acssusresmgt.4c0002210.1021/acssusresmgt.4c00022","DOIUrl":"https://doi.org/10.1021/acssusresmgt.4c00022https://doi.org/10.1021/acssusresmgt.4c00022","url":null,"abstract":"<p >Black liquor is hazardous and one of the main byproducts in the pulp and paper industry. Its primary constituent is lignin, a carbon-based molecule serving as a precursor for the synthesis of nanostructured carbon materials. Herein, we have used black liquor as a precursor to synthesize high surface area carbons for use as electrochemical oxygen reduction reaction (ORR) catalysts. The materials were activated by a NaOH treatment and subsequently nitrogen-doped by mixing with dicyandiamide, followed by pyrolysis. Synthesis resulted in catalyst materials that showed high specific surface area (1807 and 1228 m<sup>2</sup> g<sup>–1</sup>, respectively), high surface nitrogen content (6.7 and 5.1 at. %, respectively), and the inclusion of chromium and sulfur impurities that originated from the black liquor. The black liquor-based catalyst exhibited high ORR activity in alkaline media with a half-wave potential (<i>E</i><sub>1/2</sub>) of 780 mV and an onset potential (<i>E</i><sub>onset</sub>) of 900 mV versus RHE. The resultant Zn–air battery delivered a high peak power density of 112 mW cm<sup>–2</sup> at 171 mA cm<sup>–2</sup> and a specific capacity of 633 mAh g<sup>–1</sup>.</p>","PeriodicalId":100015,"journal":{"name":"ACS Sustainable Resource Management","volume":"1 8","pages":"1705–1716 1705–1716"},"PeriodicalIF":0.0,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142020199","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}