ACS Sustainable Resource Management最新文献

{"title":"Transient Cellulose Stabilization Enables Tap-Water Production of Graphene Nanosheet Inks from Electronic Waste","authors":"Varvara Bolikava,&nbsp;Jessica O’Mahony,&nbsp;Cencen Wei,&nbsp;Yuru Liu,&nbsp;Michael May,&nbsp;Keeley Connolly,&nbsp;Robert O’Connor,&nbsp;Rajani K. Vijayaraghavan,&nbsp;Conor S. Boland","doi":"10.1021/acssusresmgt.6c00463","DOIUrl":"https://doi.org/10.1021/acssusresmgt.6c00463","url":null,"abstract":"<p>Liquid-phase exfoliation (LPE) of graphene typically relies on purified graphite, engineered stabilizers and controlled solvent systems. Here, we report a low-infrastructure waste-to-ink route that combines electronics-derived graphite thermal-management materials with discarded newspaper-derived cellulose in untreated tap water. A commercial graphite thermal-interface sheet was used as a reproducible model feedstock, while graphite recovered from a discarded smartphone provided device-level validation. The newspaper-derived cellulose phase suppressed rapid aggregation during and after shear exfoliation, enabling metastable graphene dispersions without organic solvents, purified water or conventional molecular surfactants. Raman spectroscopy, electron microscopy, and statistical atomic force microscopy confirmed few-layer graphene nanosheets, with extended blending increasing exfoliation while reducing nanosheet thickness and lateral dimensions. For the 120 min model-feedstock dispersion, nanosheets had mean lateral dimensions of 103.27 ± 2.85 nm by 74.84 ± 1.61 nm, an apparent thickness of 2.58 ± 0.07 nm and an estimated layer number of ∼6. Drop-cast graphene/cellulose films became conductive above ∼250 µg cm⁻² and reached sheet resistances of 3.8 kΩ/□ at 1.0 mg cm⁻². This work positions aqueous LPE as a tolerant route for converting paired waste-derived carbon and cellulose streams into functional graphene nanosheet inks.</p>","PeriodicalId":100015,"journal":{"name":"ACS Sustainable Resource Management","volume":"3 9","pages":"3196–3205"},"PeriodicalIF":0.0,"publicationDate":"2026-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149022688","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":"CoNiP(S)@WC as a Bifunctional Electrocatalyst for Efficient Alkaline Water Splitting","authors":"Samikannu Prabu,&nbsp;Madhan Vinu,&nbsp;B. Sudharsan Bangaru,&nbsp;Suresh Babu S K,&nbsp;Kung-Yuh Chiang,&nbsp;Ashutosh Tiwari,&nbsp;George Rajendra Kumar","doi":"10.1021/acssusresmgt.6c00392","DOIUrl":"https://doi.org/10.1021/acssusresmgt.6c00392","url":null,"abstract":"<p>Developing low-cost and high-performance electrocatalysts for overall water splitting is essential for advancing sustainable hydrogen (H₂) production and renewable energy technologies. In this work, a bifunctional CoNiP(S)@WC electrocatalyst was successfully synthesized through a facile multi-step strategy involving hydrothermal treatment, followed by phosphorization and sulfurization. The integration of a Co-Ni phosphosulfide heterostructure with waste-wood-derived carbon provides abundant active sites, enhanced electrical conductivity, and improved structural stability, resulting in efficient catalytic activity toward both the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in alkaline media. The optimized catalyst exhibits low overpotentials of 38 mV for HER and 185 mV for OER at 10 mA cm^–2, along with favorable Tafel slopes, indicating fast reaction kinetics. Moreover, the synergistic electronic interactions among Co, Ni, P, and S species further enhance the intrinsic electrocatalytic performance. In a two-electrode alkaline electrolyzer, CoNiP(S)@WC achieves a low cell voltage of 1.45 V at 10 mA cm^–2 and demonstrates excellent long-term stability over 120 h of continuous operation. The results highlight the effectiveness of combining transition metal phosphosulfides with biomass-derived conductive carbon for the development of efficient, durable, and scalable electrocatalysts for practical alkaline water splitting and sustainable H₂ production.</p>","PeriodicalId":100015,"journal":{"name":"ACS Sustainable Resource Management","volume":"3 9","pages":"3163–3171"},"PeriodicalIF":0.0,"publicationDate":"2026-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149022663","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":"Toward Full-Range Recycling of Disposable Diapers","authors":"Jingjing Pan,&nbsp;Lennart Bergström","doi":"10.1021/acssusresmgt.6c00346","DOIUrl":"https://doi.org/10.1021/acssusresmgt.6c00346","url":null,"abstract":"<p>Disposable diapers pose a significant environmental challenge due to their complex composition and persistent accumulation in landfills. This work presents an efficient recycling approach that achieves full-range recycling of all diaper components, transforming more than 95 wt % of urine-contaminated diapers into useful materials with near-zero secondary waste generation. Using a NaOH/urea solution system, cellulose, superabsorbent polymers (SAP), and nonwoven fabrics (NWF) were efficiently separated under mild conditions. The cellulose was directly converted into anisotropic cellulose nanoparticles (CNP) of high quality and long-term colloidal stability, without any complex post-treatment. SAP could function as mechanical modifier that evidently enhances the viscoelastic properties of CNP-based foams. The NWF were dissolved in recyclable <em>n</em>-octadecane and utilized as a polymer source to form performance-enhancing coatings, which effectively improve the water resiliency and mechanical robustness of foams. All remaining residues produced during the recycling process were further upcycled into porous foams with tunable microstructure and mechanical performance. This study demonstrates a practical and scalable approach to valorizing an otherwise challenging waste stream and provides a model for recycling complex multicomponent materials.</p>","PeriodicalId":100015,"journal":{"name":"ACS Sustainable Resource Management","volume":"3 9","pages":"3069–3078"},"PeriodicalIF":0.0,"publicationDate":"2026-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149022708","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":"Utilizing Molten Salts as Heat Transfer Fluids for Heat Recovery in Electric Naphtha Crackers","authors":"Gustavo J. Otero Rodriguez,&nbsp;Debora de Figueiredo Luiz,&nbsp;Herbert Zondag,&nbsp;Michel van der Pal,&nbsp;Jan-Aiso Lycklama a Nijeholt,&nbsp;Alessandro Battistella,&nbsp;Shauvik De,&nbsp;Robert de Boer","doi":"10.1021/acssusresmgt.5c00535","DOIUrl":"https://doi.org/10.1021/acssusresmgt.5c00535","url":null,"abstract":"<p>The steam cracking process is a key industry process for the production of ethylene and propylene, essential feedstocks for plastics, chemicals, and fuels. It involves preheating and vaporizing hydrocarbons in the convection section, cracking carbon bonds at high temperatures in the radiant section to form olefins, and rapidly cooling the cracked gas in the quenching section to maximize yield and prevent unwanted side reactions. However, it is one of the most energy-intensive industrial processes and a major contributor to industrial greenhouse gas emissions. A promising decarbonization strategy involves electrifying the radiant section—the so-called electric steam cracker (e-cracker)—when utilizing renewable sources as part of the electricity production mix. However, the e-cracker eliminates flue gases, which are currently used to preheat the feedstock in the convection section, creating an extra heat demand. This study investigates heat integration concepts for an e-cracker, focusing on recovering and reusing quenching heat to preheat the feedstock while maintaining process performance. Various heat transfer fluids were assessed, with a particular emphasis on molten salts (i.e., nitrates, chlorides, and carbonates) as alternatives to conventional steam-based heat recovery systems. Moreover, various heat exchanger types were investigated, more specifically tube-in-tube heat exchangers (current benchmark) and shell-and-tube heat exchangers (molten salts reactor solution). The proposed heat management system utilizes molten salts across four heat recovery loops, each incorporating two shell-and-tube heat exchangers. Carbonate salts (LiNaKCO) were selected for high-temperature loops due to their stability and lower corrosivity compared to chlorides (NaKZnCl), while nitrate salts (Yara Most) were used in the low-temperature loop to minimize deflagration risks. Shell-and-tube heat exchangers were chosen for their proven compatibility with molten salts and ability to mitigate localized hot-zone risks, particularly in near-wall regions.</p>","PeriodicalId":100015,"journal":{"name":"ACS Sustainable Resource Management","volume":"3 9","pages":"2929–2949"},"PeriodicalIF":0.0,"publicationDate":"2026-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149027888","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":"Metal Alkyl Ether Carboxylates as Amphiphilic Metal Salts for Tunable Liquid–Liquid Extraction of Critical Metals","authors":"Selina Reigl,&nbsp;Vanessa Rudolph,&nbsp;Eva Müller,&nbsp;Sebastian Koltzenburg,&nbsp;Matthias Kellermeier,&nbsp;Werner Kunz","doi":"10.1021/acssusresmgt.6c00503","DOIUrl":"https://doi.org/10.1021/acssusresmgt.6c00503","url":null,"abstract":"<p>Efficient separation of critical metals from complex secondary resources remains a key challenge in hydrometallurgical recycling and resource recovery. Conventional liquid–liquid extraction typically relies on hydrophobic extractants dissolved in organic diluents, resulting in chemically complex systems that often raise environmental concerns. Here, we introduce an alternative extraction platform based on metal alkyl ether carboxylates (MAECs) derived from the COMPLET (COncept of Melting Point Lowering due to EThoxylation) approach. In these systems, the metal complexes themselves constitute amphiphilic ionic species that partition between aqueous and organic phases without the need for externally added extractants. As such species may arise directly during leaching with alkyl ether carboxylic acids, MAECs offer the potential to integrate leaching and separation within a simplified resource-recovery process. Using mixed MAEC systems representative of battery-recycling and electronic-waste streams, we systematically investigated the liquid–liquid extraction behavior of representative transition metals (Mn, Co, Ni, and Cu). Solvent screening, together with systematic variation of temperature, pH, ionic strength, ligand structure, and concentration, revealed robust and tunable extraction behavior governed primarily by metal-carboxylate interactions and anion hydrophobicity. Consistent extraction sequences (Mn &lt; Co &lt; Ni &lt; Cu) were observed across diverse solvents, enabling selective metal partitioning under mild conditions. Sequential extraction experiments further demonstrated the concept's compatibility with repeated extraction cycles, while additional studies on alkali metals (Li, Na) and rare earth elements (Y, La, Eu) illustrated the broader applicability of the MAEC platform. These results establish MAEC-based systems as a versatile and tunable extraction concept in which amphiphilic metal complexes themselves act as the extractable species, providing a simplified platform for critical-metal recovery with the potential to reduce process complexity and the number of extraction chemicals compared to conventional solvent extraction.</p>","PeriodicalId":100015,"journal":{"name":"ACS Sustainable Resource Management","volume":"3 9","pages":"3241–3254"},"PeriodicalIF":0.0,"publicationDate":"2026-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149022705","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":"Mechanistic Investigation into Conformational Stability and Catalytic Activity of the Enzyme under Ultrasound Irradiation for Antibiotic Degradation","authors":"Manju Nagar Galodiya,&nbsp;Sankar Chakma","doi":"10.1021/acssusresmgt.6c00289","DOIUrl":"https://doi.org/10.1021/acssusresmgt.6c00289","url":null,"abstract":"<p>This study investigates the relationship between ultrasound-induced conformational changes in horseradish peroxidase (HRP) and its catalytic performance during the sono-enzymatic degradation of oxytetracycline. Circular dichroism (CD) and fluorescence (FL) spectroscopy were used to analyze conformational changes and monitor the physical structural changes in the enzyme. The stability and activity of the enzyme were optimized by varying the process parameters. Horseradish peroxidase enzyme was utilized as a biocatalyst in combination with ultrasound waves for the degradation of antibiotics. The sono-enzymatic antibiotic degradation emerged as an efficient process. Kinetic parameters of free HRP were evaluated and found to be <em>K</em>_m = 8.76 (mM), <em>V</em>_max = 0.664 (µmol/min/ml), <em>K</em>_cat = 132.7 (min^–1), and <em>K</em>_cat/<em>K</em>_m = 15.15 (mM^–1 min^–1). Around 87% degradation was achieved when the free HRP was added intermittently in combination with ultrasound, whereas the conventional enzymatic process provided approximately 23% degradation of the drug. The metabolic intermediates were identified with the help of LC-MS, and the detected low-molecular-weight intermediates provide further insight into the advanced degradation stages of oxytetracycline under the investigated ultrasound-assisted enzymatic process. Therefore, by integrating enzyme kinetics, circular dichroism, fluorescence spectroscopy, and degradation pathway analysis, the work provides mechanistic insight into how ultrasound modulates HRP structure and catalytic activity.</p>","PeriodicalId":100015,"journal":{"name":"ACS Sustainable Resource Management","volume":"3 9","pages":"3027–3039"},"PeriodicalIF":0.0,"publicationDate":"2026-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149022707","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":"Biochar-Supported Magnesium-, Copper-, and Zinc Ammonium Carbonate Fertilizer Materials: Single-Pot Synthesis, Thermal Stability, Water Adsorption, Nitrogen Release, and Antifungal Activity","authors":"Mohamed Ammar,&nbsp;Mariana Govoni Brondi,&nbsp;Cristiane S. Farinas,&nbsp;Júlia Farias,&nbsp;Jasmeet Lamba,&nbsp;Pradip Adhikari,&nbsp;Sushil Adhikari,&nbsp;Jonas Baltrusaitis","doi":"10.1021/acssusresmgt.6c00448","DOIUrl":"https://doi.org/10.1021/acssusresmgt.6c00448","url":null,"abstract":"<p>Sustainable agricultural development requires novel composite materials to achieve nitrogen (N) storage, controlled release for effective plant uptake, and decreased volatilization and loss. Biochar is considered an emerging substrate that can be combined with nutrient-rich, waste-derived nitrogenous materials, as well as minerals, to serve not only as a sustainable source of carbon to enhance physical soil properties, but also as a host for complex, multinutrient fertilizers. While biochar has been shown to adsorb ammonium ions from diluted wastewater solutions, scalable solid-state synthesis methods, such as mechanochemistry for producing nutrient-rich fertilizer materials from waste-derived N sources and mineral nutrients, remain largely unexplored. In this work, double ammonium carbonate salts, including magnesium- (BC-MAC), copper- (BC-CAC), and zinc (BC-ZAC) ammonium carbonates, have been combined with biochar using the mechanochemical method in a single-pot reaction. The crystalline structure and temporal evolution of the particles were confirmed using X-ray diffraction and scanning electron microscopy, respectively, while thermogravimetric analysis revealed the complex thermal behavior of the resulting materials that evolved with storage time. The dynamic vapor sorption showed that while MAC lost 47% of its initial mass after one day of drying, 10BC-MAC lost about 37% under the same conditions. Nitrogen emissions measured showed that 10% biochar containing BC-MAC emitted ∼20% less N, compared to ammonium carbonate. This decrease in antifungal activity was tested and CAC properties were shown to be modulated by the biochar matrix. The significant effect of biochar on the structural and adsorption behavior of double salt ammonium carbonate materials highlights the potential of this composite design for agricultural applications, particularly in high nutrient content but low negative environmental impact fertilizer systems.</p>","PeriodicalId":100015,"journal":{"name":"ACS Sustainable Resource Management","volume":"3 9","pages":"3183–3195"},"PeriodicalIF":0.0,"publicationDate":"2026-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149022821","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":"From Food Safety to Food Sustainability: Rapid Pathogen Detection as a Missing Pillar of Circular Food Systems","authors":"Koel Mukherjee,&nbsp;Rittick Mondal","doi":"10.1021/acssusresmgt.6c00551","DOIUrl":"https://doi.org/10.1021/acssusresmgt.6c00551","url":null,"abstract":"","PeriodicalId":100015,"journal":{"name":"ACS Sustainable Resource Management","volume":"3 9","pages":"2900–2903"},"PeriodicalIF":0.0,"publicationDate":"2026-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149027869","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":"Biomass Valorization as an Environmental Health Intervention: Beyond Waste Management in Southeast Asia","authors":"Yitong Niu,&nbsp;Chee Keong Lee,&nbsp;Cheu Peng Leh","doi":"10.1021/acssusresmgt.6c00414","DOIUrl":"https://doi.org/10.1021/acssusresmgt.6c00414","url":null,"abstract":"","PeriodicalId":100015,"journal":{"name":"ACS Sustainable Resource Management","volume":"3 9","pages":"2896–2899"},"PeriodicalIF":0.0,"publicationDate":"2026-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149027973","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":"Countertop Food Waste Dehydration Poses Climate Tradeoff between Transportation Savings and Electricity Use","authors":"Katherine K. Porterfield,&nbsp;Eric D. Roy","doi":"10.1021/acssusresmgt.6c00097","DOIUrl":"https://doi.org/10.1021/acssusresmgt.6c00097","url":null,"abstract":"<p>Organics recycling can be hindered by the high water content of food scraps—making transportation costly and greenhouse gas emissions intensive. One potential solution is drying these materials prior to transport, which also reduces volume and odor. However, this approach introduces a new trade-off, as the energy used for drying is also associated with greenhouse gas emissions. We conducted a life cycle assessment (LCA) to explore this trade-off in the context of electric countertop food dehydration technologies, which dehydrate kitchen scraps to reduce the weight of material transported while reducing particle size mechanically. Scenarios analyzed included home composting, centralized composting, landfilling, and countertop dehydration followed by either home or centralized composting. We used sensitivity analysis to evaluate how transportation distance and grid carbon intensity influence the climate impact of each strategy. Use of a countertop food dehydrator prior to composting was estimated to reduce the climate change impact of food waste management (CO₂-eq kg^–1 food waste) by 42–92% relative to landfilling, depending on the specific scenario. The comparison between composting scenarios with and without prior dehydration was sensitive to transport distance and the carbon intensity of the consumer's electric grid.</p>","PeriodicalId":100015,"journal":{"name":"ACS Sustainable Resource Management","volume":"3 9","pages":"2966–2974"},"PeriodicalIF":0.0,"publicationDate":"2026-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149022648","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}