Green Carbon最新文献

{"title":"Biomass-based monomer design and closed-loop recycling strategy development for epoxy resin thermoset","authors":"Rulin Yang , Guangqiang Xu , Qinggang Wang","doi":"10.1016/j.greenca.2024.06.005","DOIUrl":"10.1016/j.greenca.2024.06.005","url":null,"abstract":"","PeriodicalId":100595,"journal":{"name":"Green Carbon","volume":"2 3","pages":"Pages 318-319"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141700586","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}

{"title":"Assessment of carbon footprint of potable water production: A case from Bangladesh","authors":"Pritom Bhowmik Akash,&nbsp;Pranjol Chakraborty,&nbsp;Niloy Das,&nbsp;Md. Reaz Akter Mullick","doi":"10.1016/j.greenca.2024.06.006","DOIUrl":"10.1016/j.greenca.2024.06.006","url":null,"abstract":"<div><div>Carbon footprint (CF), a measure of greenhouse gas (GHG) emissions, is currently a global concern because of its significant effects on climate change. Understanding GHG emissions from potable water production is important because water treatment and distribution consume much energy while emitting a significant amount of GHG. With economic and population growth, water demand has increased, resulting in higher GHG emissions. This study aims to assess the CF of potable water production in Bangladesh, focusing on the country’s economic capital, Chattogram. This study estimates and compares the CF of the treatment, distribution, and consumption phases. It also estimates the CF of different water treatment plants (WTPs) during the treatment phase. WTPs use electricity for a full-scale operation, during which approximately 4.5 million m³ of raw water of varying turbidity is treated. This study calculates a country-specific GHG emission factor for Bangladesh’s electricity generation method as different sources produce different quantities of GHGs. This study also considers the energy consumed to distribute water from the WTPs to household rooftop tanks in the distribution phase. For the consumption phase, the study considers the energy consumption for domestic water treatment, which involves boiling of a portion of treated water for drinking purposes. The study estimates that approximately 0.18, 0.27, and 17.52 kg CO₂ equivalent (CO₂-eq) are emitted in the treatment, distribution, and consumption phases, respectively, for the production of 1 m³ of water. Boiling at the consumption phase alone generates 97.48% of the total CF. The daily CFs for surface water and groundwater use in 2017 were 16,387.78 and 34,092.08 kg CO₂-eq, respectively; those in 2022 were 83,769.25 and 2130.97 kg CO₂-eq, respectively. The outcome of this study will assist stakeholders and policymakers in the progress of SDG-13 and in effective planning and operational decision making for sustainable water systems.</div></div>","PeriodicalId":100595,"journal":{"name":"Green Carbon","volume":"2 3","pages":"Pages 339-349"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141848316","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}

{"title":"When cellulosomes meet humans","authors":"","doi":"10.1016/j.greenca.2024.06.001","DOIUrl":"10.1016/j.greenca.2024.06.001","url":null,"abstract":"","PeriodicalId":100595,"journal":{"name":"Green Carbon","volume":"2 3","pages":"Pages 337-338"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141416375","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}

{"title":"Effect of zeolites on the alkylation of aromatics with alkanes using a Pd nanoparticle/solid acid cooperative catalytic system","authors":"Satoshi Misaki ,&nbsp;Moe Takabatake ,&nbsp;Shingo Hasegawa ,&nbsp;Yuichi Manaka ,&nbsp;Wang-Jae Chun ,&nbsp;Ken Motokura","doi":"10.1016/j.greenca.2024.05.004","DOIUrl":"10.1016/j.greenca.2024.05.004","url":null,"abstract":"<div><div>The direct alkylation of benzene with alkanes is an effective method for alkylbenzene production. Our group previously discovered that a mixture of supported Pd nanoparticles and solid acids effectively promoted the alkylation of benzene with alkanes. Herein, the alkylation of toluene with <em>n</em>-heptane was catalyzed by physical mixture of H-mordenite and Pd nanoparticles supported on hydrotalcite to afford the corresponding C7 alkylation product with 87% selectivity and 14% toluene conversion. The reaction slightly proceeded in the absence of Pd nanoparticles or H-mordenite, indicating cooperative catalysis by the two different solid catalysts. Moreover, the high stability of the Pd nanoparticles on hydrotalcite was confirmed via reuse experiments and transmission electron microscopy (TEM) analysis. The catalyst mixture was reused at least three times without any loss of product yield, and after three reuses, TEM analysis revealed that the size of the Pd nanoparticles following the initial catalytic reaction was similar to that of the catalyst. Scanning transmission electron microscopy with energy dispersive spectroscopy (STEM-EDS) analysis of the recovered catalyst mixture revealed the preservation of Pd nanoparticles on the hydrotalcite surface, as well as the close positioning of the two different catalyst particles, thus suggesting interparticle hydrogen transfer. The structure of the solid acid strongly affected the alkylation product selectivity. For example, H-mordenite showed high selectivity for the <em>n</em>-heptane alkylation product with a C7 alkyl chain, whereas the selectivity changed with other zeolites. This cooperative catalytic system can be applied to the alkylation of other substituted benzenes, such as xylenes and phenols, with good selectivity toward the desired alkylation product.</div></div>","PeriodicalId":100595,"journal":{"name":"Green Carbon","volume":"2 3","pages":"Pages 282-290"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142357810","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}

{"title":"Side-chain engineering for regulating structure and properties of a novel visible-light-driven perylene diimide-based supramolecular photocatalyst","authors":"Li Yang ,&nbsp;GaoYuan Chen ,&nbsp;Xuan Yang ,&nbsp;Yudong Wang ,&nbsp;Xinling Zhang ,&nbsp;Yingjie Guo ,&nbsp;Jun Wang ,&nbsp;Di Liu","doi":"10.1016/j.greenca.2024.05.006","DOIUrl":"10.1016/j.greenca.2024.05.006","url":null,"abstract":"<div><div>Systematic and in-depth explorations of the effects of side-chain modulation on the molecular assembly, optoelectronic properties, and photocatalytic properties of supramolecular systems, as well as the kinetics of charge separation and migration in these systems, are rare. In this study, a novel supramolecular photocatalyst with an alkoxy side chain (S-EPDI) was successfully developed through subtle design of the short and linear alkoxyl side chains, affording a phenol degradation efficiency approximately four times that of the counterpart with an alkyl side chain (S-APDI). Notably, combined density functional theory (DFT) calculations, absorption spectroscopy, and other characterizations revealed that the perylene diimide (PDI) molecular units, through π-π stacking, formed a unique rotationally offset stacked supramolecular structure, exhibiting a significant dipole moment. This gave rise to the formation of a larger inherent electric field within S-EPDI compared to S-APDI. Moreover, the study quantitatively demonstrated that a stronger inherent electric field and lower rate of surface charge recombination facilitate efficient separation of the photogenerated carriers. Therefore, the side-chain molecular engineering method employed in this study offers an effective approach for modulating the kinetics of charge migration.</div></div>","PeriodicalId":100595,"journal":{"name":"Green Carbon","volume":"2 3","pages":"Pages 300-309"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141702777","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}

{"title":"LPEO enhanced LAGP composite solid electrolytes for lithium metal batteries","authors":"Dongmei Dai ,&nbsp;Pengyao Yan ,&nbsp;Xinxin Zhou ,&nbsp;Haowen Li ,&nbsp;Zhuangzhuang Zhang ,&nbsp;Liang Wang ,&nbsp;Mingming Han ,&nbsp;Xiaobing Lai ,&nbsp;Yaru Qiao ,&nbsp;Mengmin Jia ,&nbsp;Bao Li ,&nbsp;Dai-Huo Liu","doi":"10.1016/j.greenca.2024.06.002","DOIUrl":"10.1016/j.greenca.2024.06.002","url":null,"abstract":"<div><div>The application of solid electrolyte is expected to realize the commercialization of high energy density lithium metal batteries (LMBs). While the interfacial contact between solid inorganic electrolyte and electrodes has become a stumbling block for achieving stable cycling in LMBs. In this work, a Li-containing polyethylene oxide (LPEO) was introduced between LAGP and electrodes as a buffer layer to regulate the interfacial compatibility and reduce interfacial impedance, inhibiting the side reactions. Moreover, ether-oxygen bond on LPEO chain can coordinate with Li⁺ and guide the transportation of Li⁺, achieving fast Li⁺ diffusion between Li_1+<em>x</em>Al_<em>x</em>Ge_2-<em>x</em>(PO₄)₃ (LAGP) and electrodes. Specifically, the growth of lithium dendrites is effectively suppressed in LAGP with LPEO modification, which would lead to remarkable cycling stability and rate capability. Therefore, the Li|LPEO-LAGP|Li battery can cycle stably for more than 600 h at 0.1 mA cm⁻². In addition, long-term performance of Li|LPEO-LAGP| LiFePO₄ (LFP) battery was achieved at a rate of 0.4 C, and capacity retention is more than 74% after 200 cycles. The Li|LPEO-LAGP|LiNi_0.8Co_0.1Mn_0.1O₂ also realized the steady operation in the voltage range of 2.8–4.3 V.</div></div>","PeriodicalId":100595,"journal":{"name":"Green Carbon","volume":"2 3","pages":"Pages 310-315"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142357812","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}

{"title":"Nanomaterial-biological hybrid systems: Advancements in solar-driven CO2-to-chemical conversion","authors":"Wenxin Ji ,&nbsp;Junying Liu ,&nbsp;Chong Sha ,&nbsp;Yang-Chun Yong ,&nbsp;Ying Jiang ,&nbsp;Zhen Fang","doi":"10.1016/j.greenca.2024.05.005","DOIUrl":"10.1016/j.greenca.2024.05.005","url":null,"abstract":"<div><div>The nanomaterial-biological hybrid system (NBHS) is a rapidly growing interdisciplinary field that combines photocatalytic nanomaterials with biological systems, leveraging the superior light-harvesting capabilities of nanomaterials and the excellent selectivity of enzymes and microbes. This integration enables the conversion of solar energy into chemical products with high efficiency, attracting significant research interest from the fields of renewable energy and environmental science. Despite notable advances, the synergy mechanisms between abiotic nanomaterials and biotic enzymes/microbes remain unclear. This review outlines the latest progress in NBHS, encompassing material-enzyme hybrids and material-microbial hybrids, and explores design principles. Specifically, it examines the crucial role of electron transfer modes in enhancing the synergistic efficiency of nanomaterials and biological systems by analyzing various electron transfer mechanisms at the nanomaterial-biological interface. Drawing from existing literature, the review highlights the use of interfacial electron transfer mechanisms between coenzymes and cytochromes to elucidate nano/bio-material synergy. This fundamental understanding unveils opportunities to enhance biocompatible interfaces and electron transfer mechanisms, enabling non-photosensitive bacteria to harness solar energy for light-driven intracellular metabolism and CO₂ bio-reduction into value-added chemicals. By offering a comprehensive overview of NBHS, this review also lays the groundwork for the development of more powerful systems aimed at achieving carbon neutrality.</div></div>","PeriodicalId":100595,"journal":{"name":"Green Carbon","volume":"2 3","pages":"Pages 322-336"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142357814","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}

{"title":"Embryonic zeolite-directed synthesis of ZSM-34 and SSZ-13 zeolites","authors":"","doi":"10.1016/j.greenca.2024.04.002","DOIUrl":"10.1016/j.greenca.2024.04.002","url":null,"abstract":"<div><div>The use of an organic structure-directing agent (OSDA) makes zeolite synthesis expensive and environmentally non-friendly. Seeded zeolite synthesis offers an environmentally benign alternative that avoids using an OSDA while providing a high purity, crystallinity, and yield in the product. In this study, we report using embryonic zeolites (EZs) as efficient seeds to obtain industrially important zeolites such as ZSM-34 and SSZ-13 in an OSDA-free synthesis system. Our results showed that zeolites ZSM-34, SSZ-13 and LTL could be obtained depending on the Al/Si ratio in the synthesis system. The synthesis time was considerably shorter than other ZSM-34 and SSZ-13 syntheses methods reported in the literature, achieving more than 90% crystallinity. The physicochemical analysis showed that highly crystalline zeolites with characteristics similar to the OSDA synthesized counterparts were obtained. Furthermore, the EZs seeding approach is facile, low cost, and environmentally friendly, provided the synthesis is OSDA-free. In addition, the EZs seeds can be obtained under hydrothermal synthesis conditions. The method can be potentially applied to the synthesis of other zeolite types.</div></div>","PeriodicalId":100595,"journal":{"name":"Green Carbon","volume":"2 3","pages":"Pages 274-281"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141058099","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}

{"title":"Experimental and numerical modeling of carbonized biomass gasification: A critical review","authors":"Kannie Winston Kuttin ,&nbsp;Haowen Yu ,&nbsp;Mingming Yang ,&nbsp;Lu Ding ,&nbsp;Xueli Chen ,&nbsp;Guangsuo Yu ,&nbsp;Fuchen Wang","doi":"10.1016/j.greenca.2024.04.003","DOIUrl":"https://doi.org/10.1016/j.greenca.2024.04.003","url":null,"abstract":"<div><p>Gasification is one of the most significant and well-researched pathways to produce energy from biomass among the different options available. It is a conversion through thermo-chemical process that takes place within a gasifier, with interconnected factors that have an impact on how well the gasifier works. Gasification of carbonized biomass, which has a variety of effects on both the gasification process and the final product, is a significant method of producing energy from raw biomass that contains a lot of moisture or has non-homogeneous morphology. Although carbonized biomass has the potential to eliminate or significantly reduce tar formation, which is the most difficult aspect of biomass gasifier design and operation, it has not received the attention it merits even though gasification of biomass is a well-known conversion process with extensive research and development spanning all sectors of the process. This review gathers and analyzes the growing number of experimental and numerical modeling approaches in gasification of carbonized biomass based on exact conditions such as type of modeling considerations, feedstock, gasifier, and assessed parameters. The study also provides an overview of various models, such as equilibrium and kinetic rate models and numerical simulations of carbonized biomass gasification schemes based on computational fluid dynamics and Aspen Plus, while comparing the modeling approaches and results for each type of models that are described in the literature. Also, this review encompasses a broad variety of technologies, from laboratory reactors to industrial scale. Overall, this review offers a brief overview of the modeling decisions that must be taken at the beginning of a modeling research.</p></div>","PeriodicalId":100595,"journal":{"name":"Green Carbon","volume":"2 2","pages":"Pages 176-196"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2950155524000363/pdfft?md5=157ba091270c991468a03823d4354756&pid=1-s2.0-S2950155524000363-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141607930","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}

{"title":"Engineering of cofactor preference and catalytic activity of methanol dehydrogenase by growth-coupled directed evolution","authors":"Jinxing Yang ,&nbsp;Liwen Fan ,&nbsp;Guimin Cheng ,&nbsp;Tao Cai ,&nbsp;Jibin Sun ,&nbsp;Ping Zheng ,&nbsp;Shuang Li ,&nbsp;Yu Wang","doi":"10.1016/j.greenca.2024.03.004","DOIUrl":"10.1016/j.greenca.2024.03.004","url":null,"abstract":"<div><p>Methanol, produced from carbon dioxide, natural gas, and biomass, has drawn increasing attention as a promising green carbon feedstock for biomanufacturing due to its sustainable and energy-rich properties. Nicotinamide adenine dinucleotide (NAD⁺)-dependent methanol dehydrogenase (MDH) catalyzes the oxidation of methanol to formaldehyde via NADH generation, providing a highly active C1 intermediate and reducing power for subsequent biosynthesis. However, the unsatisfactory catalytic efficiency and cofactor bias of MDH significantly impede methanol valorization, especially in nicotinamide adenine dinucleotide phosphate (NADP⁺)-dependent biosynthesis. Herein, we employed synthetic NADH and NADPH auxotrophic <em>Escherichia coli</em> strains as growth-coupled selection platforms for the directed evolution of MDH from <em>Bacillus stearothermophilus</em> DSM 2334. NADH or NADPH generated by MDH-catalyzed methanol oxidation enabled the growth of synthetic cofactor auxotrophs, establishing a positive correlation between the cell growth rate and MDH activity. Using this principle, MDH mutants exhibiting a 20-fold improvement in catalytic efficiency (<em>k</em>_cat/<em>K</em>_m) and a 90-fold cofactor specificity switch from NAD⁺ to NADP⁺ without a decrease in specific enzyme activity, were efficiently screened from random and semi-rationally designed libraries. We envision that these mutants will advance methanol valorization and that the synthetic cofactor auxotrophs will serve as versatile selection platforms for the evolution of NAD(P)⁺-dependent enzymes.</p></div>","PeriodicalId":100595,"journal":{"name":"Green Carbon","volume":"2 2","pages":"Pages 242-251"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2950155524000296/pdfft?md5=b32f092a81ca26a872ef68a3ce15939a&pid=1-s2.0-S2950155524000296-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140767262","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}