JOURNAL OF HAZARDOUS MATERIALS
·
2021
·
IF 10.588
Bo-Yu Peng,Zhibin Chen,Jiabin Chen,Xuefei Zhou,Wei-Min Wu,Yalei Zhang
Polylactic acid (PLA) is biodegraded rapidly under composting or thermophilic temperature but slowly under natural conditions with substantial microplastics generated. In this study, we examined the feasibility of PLA biodegradation and developed a novel approach for PLA waste management using yellow mealworms ( Tenebrio molitor larvae) to achieve biodegradation and resource recovery simultaneously. Results confirmed PLA biodegradation in mealworms as sole PLA and PLA-bran mixtures (10%, 20%, 30% and 50% PLA, wt/wt). Feeding PLA-bran mixtures supported the larval development with higher survival rates and lower cannibal rates than feeding PLA only at ambient temperature. The PLA conversion efficiency was 90.9% with 100% PLA diet and was around 81.5–86.9% with PLA-bran mixtures. A peak insect biomass yield was achieved at a PLA ratio of 20%. PLA biodegradation was verified via detection of chemical and thermal modifications. Gut microbial community analysis indicated that intestinal communities shifted with PLA biodegradation, resulting in clusters with OTUs unique to the PLA diet. Based on these findings, we propose a circular approach for PLA waste management via resource recovery of used PLA as the feedstock for insect biomass production, management of mealworm excrement waste as fertilizer, and utilization of agricultural products for PLA production.
研究领域:
环境科学
·
生物学
·
微生物学
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产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Junli Wang,Chen Luo,Wentao Wang,Hui Wang,Jiaxuan Shi,Taihong Yan,Meiwen Cao,Jianwei Li
The effective separation of palladium isotopes from high-level radioactive waste offers significant advantages, not only in ensuring the safe management and disposal of radioactive materials but also in addressing the scarcity of noble metals. In this study, a covalent organic framework (COF-SSH) modified with thiol and thioether groups is synthesized for the purpose of palladium separation. The experimental results demonstrate that the adsorption of Pd(II) occurs rapidly, reaching equilibrium within just 10 min. The adsorption isotherm for Pd(II) aligns well with the Langmuir model, revealing a maximum adsorption capacity of 420.2 mg/g at 3 M HNO 3 . Through Fourier Transform Infrared Spectroscopy (FT-IR), X-ray Photoelectron Spectroscopy (XPS), and Density Functional Theory (DFT) analyses, the interaction between Pd and S atoms as being crucial for the adsorption process is identified. Moreover, COF-SSH exhibits exceptional selectivity for Pd(II) in simulated nuclear wastewater and maintains its performance throughout six consecutive adsorption and regeneration cycles. These results suggest that COF-SSH is a promising adsorbent for palladium separation, offering both acid resistance and high selectivity, making it a valuable candidate to the field of radioactive waste management and noble metal recovery.
研究领域:
材料科学
·
核化学
·
环境科学
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产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2023
·Vol. 27
·期 5
·1261-1268
·
IF 2.5
Deng Hao-chen (Preston),Hao Qingzhu,Wang Yuhang
The COVID-19 pandemic that is still prevalent around the globe each day consumes massive disposable face masks and consequently lays a heavy burden on waste management. Meanwhile, the incineration of these medical wastes further escalates the already overwhelming carbon emission that leads to global warming and climate change. To offer a potential solution addressing medical waste and CO 2 emission challenges, we herein develop a synthetic protocol to upgrade face masks into Ni, N-doped graphene (Ni–N-C) sheet catalysts for selectively reducing CO 2 into CO electrochemically. The high specific surface area and the uniform dispersion of Ni active sites of the catalyst derived from a regular disposable face mask enable a near-unity CO Faradaic efficiency (FE) at the current density of 200 mA cm −2 . This study offers outside-of-the-box thinking to address environmental issues by turning medical wastes into CO 2 reduction catalysts.
研究领域:
材料科学
·
环境科学
·
化学工程
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2022
·
IF 6.364
Liang Xu,Min Niu,Hongjie Wang,Lei Su,Hongfei Gao,Lei Zhuang
Material with superior damage tolerance, chemical durability, and structure stability is of increasing interest in high-level radioactive waste management and structural components for advanced nuclear systems. In this paper, high-entropy (La 0.2 Ce 0.2 Nd 0.2 Sm 0.2 Gd 0.2 ) 2 Zr 2 O 7 with pyrochlore-type structure was synthesized through conventional solid-state method. The as-synthesized high-entropy oxide maintained crystalline after being irradiated by using Au 3+ with 9.0 MeV energy at the fluence of 4.5 × 10 15 ions·cm -2 , indicating its high tolerance to heavy-ion irradiation. The irradiation-induced order-disorder transition from pyrochlore structure to defective fluorite structure occurred in high-entropy (La 0.2 Ce 0.2 Nd 0.2 Sm 0.2 Gd 0.2 ) 2 Zr 2 O 7 . After irradiation, no irradiation-induced segregation was observed at grain boundary. Moreover, the mechanical properties of high-entropy pyrochlore were improved. The heavy-ion irradiation resistance mechanisms of high-entropy pyrochlore were discussed in detail. Our work identified high-entropy (La 0.2 Ce 0.2 Nd 0.2 Sm 0.2 Gd 0.2 ) 2 Zr 2 O 7 can be a promising candidate for immobilization of high-level radioactive waste as well as advanced nuclear reactor system from the perspective of irradiation resistance.
研究领域:
材料科学
·
核能工程
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DOI
高影响因子
Frontiers in Environmental Science
·
2025
·
IF 3.7
Renren Wang,Hao Xiao,Yi Tan,Luo Chen,Yuhang Zhou,Runfeng Xie,Chuan Tan,Yifei Yang,Cheng Liu,Hengyang Wang,Junxiao Yang,Tao Duan,Lin Zhu
The efficient capture of radioactive iodine is critical for nuclear safety due to its high mobility and toxicity. Bismuth sulfide (Bi2S3) aerogel, synthesized via a one-step hydrothermal method, demonstrates exceptional iodine adsorption performance. Characterization by scanning electron microscopy (SEM) and BET confirmed the material’s porous structure, which facilitated iodine uptake. Batch experiments revealed a high adsorption capacity of 1,204 mg/g, with kinetics and isotherms well described by the pseudo-second-order model and Freundlich isotherm, respectively, indicating that the adsorption process is dominated by chemisorption. The adsorption mechanism involves iodine phase transfer and subsequent formation of stable BiI3 phases, ensuring long-term immobilization. The Bi2S3 aerogel demonstrates superior chemical and thermal stability, high capture efficiency, and cost-effectiveness, further highlighting its practical potential for nuclear waste management. This work advances the design of bismuth-based adsorbents by combining high capacity, stability, and scalable synthesis, thereby offering a sustainable solution for radioactive iodine capture.
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产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2022
·
IF 14.224
Hongcai Su,Tian Li,Shurong Wang,Lingjun Zhu,Yanjun Hu
The accumulation and improper disposal of a large amount of plastic waste have exacerbated the deterioration of the global ecosystem and environment. To simplify the complex management system and alleviate the environmental impact of plastic wastes, this study reports a novel one-pot hydrothermal conversion strategy for polyethylene terephthalate (PET), integrating three steps, namely depolymerization , subsequent in-situ aqueous phase reforming, and in-situ CO 2 capture. Here, the PET waste was converted directly into the clean high-purity H 2 fuel and the disodium terephthalate (Na 2 -TPA). A high yield of H 2 at 23.7 mol/kg PET with ca. 99 % of H 2 concentration was obtained at a temperature as low as 240 °C. The feasibility of this strategy in handling real-world PET plastic wastes was demonstrated through a series of tests on beverage bottles, food packaging, and polyester fabric waste. The Na 2 -TPA crystals produced from the proposed PET conversion system exhibited purity close to that of the standard sample, and thus had the potential to be directly used as an electrode material . Overall, this strategy provides an efficient way to transform PET waste into high-value products and improves the sustainability of the PET waste disposal process.
研究领域:
环境科学
·
能源科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
Desalination and Water Treatment
·
2015
·
IF 1.173
Antonis A. Zorpas,Irene Voukkali,Pantelitsa Loizia
Hospitality industries often pay little attention to their environmental responsibilities. Solid waste is a key concern in the hospitality industry. Typically, a hotel guest can produce 1 kg of waste per day that accumulates to thousands of tonnes of waste annually. Many hotel operators have very little interest in reducing, minimized and/or recycling waste, believing that such activities are too expensive and time-consuming. The main objectives were to provide data regarding the solid waste management from hotels and present typical practices for waste prevention/minimization at source. Also, this paper describes a cost-benefit analysis of the impact of the hospitality industry in the management of waste from the municipality of Paralimni in the eastern region of Cyprus.
研究领域:
环境科学
·
废物管理
·
可持续性
·
旅游研究
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DOI
高影响因子
Materials
·
2025
·Vol. 18
·期 4
·823
·
IF 3.2
Qingya Niu,Jiayin Xie,Jiayan Li,Zaixu An,Huijie Xiao,Xiaoyuan Zhang,Zhiqiang Su,Zhichao Wang
Significant progress has been achieved in the development of superabsorbent polymers (SAPs), focusing on enhancing their performance and expanding their applications. Efforts are particularly directed at increasing water absorbency while promoting environmental sustainability. Biodegradable materials such as starch and potassium humate have been successfully integrated with SAPs for desert greening, improving water retention, salt resistance, and seedling survival. The inclusion of nutrient-rich organic-inorganic composites further enhances the durability, efficiency, and recyclability of SAPs. In drought mitigation, polymeric absorbent resins such as polyacrylamide and starch-grafted acrylates have shown efficacy in ameliorating soil conditions and fostering plant growth. In arid environments, agents enriched with humic acid and bentonite contribute to improved soil aeration and water retention, creating optimal conditions for plant establishment. Additionally, the adoption of innovative waste management solutions has led to the production of amphiphilic SAPs from residual sludge, effectively addressing soil nutrient deficiencies and environmental pollution. In the food industry, SAPs containing protease, tea polyphenols, and chitosan exhibit potential for enhancing the stability and quality of seafood products. These advancements highlight the growing relevance of structural optimization approaches in SAP development across diverse applications and underline the importance of continued innovation in these fields. As novel materials emerge and environmental challenges intensify, the potential applications of SAPs are anticipated to expand significantly.
研究领域:
生态学
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环境科学
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材料科学
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农业科学
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产品关联
DOI
PubMed
高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2025
·
IF 7.8
Zhongqing Shen,Zixian Jia,Lin Gao,Lijiao Qin,Jie Zhang,Haocheng Sun,Jianlei Qi,Jianzhong Yin
Methanolysis of waste poly(lactic acid) (PLA) to produce the non-toxic, biodegradable solvent methyl lactate (MLA) is a promising strategy for waste management. We introduce an efficient, catalyst-free PLA methanolysis approach enhanced by a CO₂ atmosphere, achieving nearly 100 % PLA conversion and a 95.5 % MLA yield. These results represent a significant increase in both conversion and yield compared to reactions conducted without CO₂. Through analytical methods and density functional theory (DFT) calculations, we elucidate the reaction pathways, showing that CO₂ critically enhances the ester exchange between methanol and PLA chains. This enhancement is attributed to CO₂'s role in stabilizing transition states and promoting ester bond scission by forming additional hydrogen bonds, which facilitates efficient MLA formation. Furthermore, this approach's viability for real-world recycling is demonstrated with commercial PLA products, achieving 53.9 % PLA conversion and 17.0 % MLA yield. When applied to mixed plastic waste containing PLA and PET, the process achieves nearly complete PLA conversion with a 79.4 % MLA yield, while also producing the PET-derived product DMT, which can be isolated along with MLA via simple precipitation and distillation. This research presents a sustainable and highly tolerant solution for the chemical recycling of both pure and mixed PLA waste streams.
研究领域:
化学工程
·
高分子科学
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可持续化学
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废物管理
·
绿色技术
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产品关联
DOI
高影响因子
POWDER TECHNOLOGY
·
2025
·
IF 4.6
Hang Lu,Fei Huang,Wenting Zhao,Zhuoying Shan,Qingdong He,Jingyu Zhang,Wenbo Wang
A sustainable strategy was developed to convert graphite tailings (GT), a solid waste, into a hierarchical porous silicate adsorbent with engineered multiple active sites (denoted as GTPM12h) through an integrated mechanochemical-hydrothermal route for efficient decontamination of organic dye wastewater. The reconstructed silicate phases are enriched with oxygen-containing functional groups and metal active sites, resulting in remarkably enhanced adsorption performance. GTPM12h exhibits superior adsorption capacities of 379.76 mg·g −1 for methylene blue and 487.57 mg·g −1 for methyl violet over a broad pH range (5–9), outperforming most commercial activated carbons. At a low dosage (0.6 g·L −1 ), the removal efficiency of dyes exceeds 99.9 % in both single and ternary mixed dye systems and remains at 92.4 % after five cycles. The adsorption process follows a chemisorption-dominated monolayer mechanism driven by synergistic electrostatic attraction, hydrogen bonding, and ion exchange. This study presents an eco-friendly strategy addressing dual environmental challenges: upcycling industrial waste and remediating water pollution.
研究领域:
环境科学
·
材料科学
·
废物管理
·
水处理
·
吸附技术
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产品关联
DOI
高影响因子
ENVIRONMENTAL RESEARCH
·
2025
·
IF 7.7
Minhua Su,Shuwen Wang,Jiaqi Pan,Miaoling Chen,Congjie Shen,Yanrong Lai,Jiaxue Zhao,Jingran Yang,Diyun Chen,Ying Zhou
The extraction of uranium (U) from wastewater is of vital importance for ensuring the sustainable and safe development of nuclear energy, as it addresses both environmental protection and resource recycling. Vanadium (V) and its compounds are extensively employed in iron and steel manufacturing, and their utility in pollutant remediation further promotes the circular use of V-bearing materials. However, studies on utilizing inexpensive and readily available vanadium oxides (e.g., V 2 O 5 ) for the treatment of highly acidic uranium-containing wastewater remain scarce. This study investigated the effectiveness of V 2 O 5 in removing U(VI) and immobilizing it into crystalline uranyl vanadates, providing the first confirmation of the feasibility of using V 2 O 5 for uranium elimination and capture. The results indicate that V 2 O 5 exhibits excellent extraction capacity and selectivity for uranyl ions in contaminated solutions, achieving a U(VI) extraction rate exceeding 97% even under highly acidic conditions ( e.g. , pH = 2.0). Adsorption equilibrium was attained within 250 min, and kinetic studies combined with model fitting indicated that the process was governed by both intra-particle diffusion and chemical adsorption mechanisms. It was discovered that the captured U(VI) was ultimately incorporated into a stable crystalline phase, identified as uvanite (U 2 V 6 O 21 ·15H 2 O), through a coprecipitation pathway, revealing a novel crystallization mechanism. The overall immobilization process was attributed to the synergistic effects of chemical adsorption and coprecipitation. These findings support the development of vanadium oxide-based technologies for U(VI) purification and recovery from complex wastewater.
研究领域:
环境科学
·
核化学
·
废物管理
·
材料科学
·
污染修复
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产品关联
DOI
PubMed
高影响因子
Processes
·
2025
·Vol. 13
·期 12
·3935
·
IF 2.8
Wei Leng,Nengwu Zhu,Fei Li,Xiaorong Wei,Sihai Zhang,Wanqi Li,Pingxiao Wu
The high concentrations of heavy metals in electroplating sludge (ES) result in its dual properties as both hazardous waste and a potential secondary resource. Effective strategies are urgently needed for the simultaneous detoxification and utilization of ES. In this study, a sustainable strategy for co-melting of ES and coal gasification slag (CGS) was proposed. By optimizing the mass ratio of ES to CGS (m(ES)/m(CGS) = 1) and adding 7.5 wt% B2O3, a low-temperature vitrification system was established at 1250 °C, enabling the recovery of 97.31 ± 0.61% Cu, 99.17 ± 0.43% Ni, and 81.84 ± 0.33% Fe in the alloy phase within 90 min. Melt structure analysis indicated that CaO and [BO3] promoted the depolymerization of the silicate network, facilitating the amorphous phase transition and enhancing fluidity. Meanwhile, residual carbon from CGS functioned as a reductant, reducing metal minerals in the mixture to form alloys that were simultaneously separated during co-melting. Compared with the raw sample, heavy metals in the vitrified product were effectively immobilized, exhibiting low risk of heavy metal leaching. Furthermore, high-value-added glass-ceramic materials were successfully prepared from the vitrified product. Therefore, the proposed strategy could serve as a sustainable solution for the treatment of ES and CGS.
研究领域:
环境科学技术
·
废物管理
·
冶金学
·
材料科学
·
可持续工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）