Journal of hazardous materials advances最新文献

{"title":"Soil bacterial co-occurrence patterns and community assembly along a gradient of heavy metal and explosive pollution at ammunition demolition sites","authors":"Huijun Zhang ,&nbsp;Yongbing Zhu ,&nbsp;Sanping Zhao ,&nbsp;Chao Ji ,&nbsp;Shiyu Wang ,&nbsp;Xiaodong Liu","doi":"10.1016/j.hazadv.2025.100975","DOIUrl":"10.1016/j.hazadv.2025.100975","url":null,"abstract":"<div><div>Soil microbial communities play an essential role in ecological processes. Pollution from anthropogenic activities can disrupt interactions and assembly processes within soil bacterial communities. However, these processes have not been extensively studied at military-contaminated sites. This study explored bacterial community compositions and functions, the co-occurrence networks, and the assembly processes by analyzing soil samples collected along a heavy metal and explosive pollution gradient. The results showed that with the increase of pollution, the bacterial α-diversity indices decreased significantly, while the abundance of metal- and explosive-tolerant bacterial taxa increased, such as Bacteroidetes and Firmicutes. Lead, cadmium, total organic carbon, and 2,4,6-trinitrotoluene were key factors affecting the diversity and composition of bacteria. High combined pollution reduced the complexity and robustness of the bacterial network, resulting in a decrease in community stability. The deterministic process dominated the community assembly and became more pronounced as pollution increased. Chromium, lead, cadmium, copper, 2,4,6-trinitrotoluene, and soil texture were considered important driving factors for the determinism. Functional prediction showed that the anaerobic metabolism processes (fermentation and nitrogen respiration) were abundant under high pollution levels, and metabolic pathways associated with drug resistance were more prominent, which suggested alterations in biogeochemical cycles and potential ecological risks. This study confirms that the combined pollution from ammunition demolition reshapes bacterial communities by strengthening environmental filtration and altering bacterial interactions, providing a theoretical basis for the ecological restoration of military-impacted soils in the future.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"21 ","pages":"Article 100975"},"PeriodicalIF":7.7,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145924734","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":"Integrated morpho-physiological, biochemical and transcriptomic analyses reveal wheat responses to antimony toxicity and brassinosteroid-mediated alleviation","authors":"Lina Fan ,&nbsp;Qiujuan Jiao ,&nbsp;Jingjing Zhang ,&nbsp;Huihong Zhang ,&nbsp;GuiYing Jiang ,&nbsp;Jin Yang ,&nbsp;Gezi Li ,&nbsp;Shah Fahad ,&nbsp;Yinglong Chen ,&nbsp;Evgenios Agathokleous ,&nbsp;Jiaokun Li ,&nbsp;Xiaolei Jie ,&nbsp;Shiliang Liu ,&nbsp;Haitao Liu","doi":"10.1016/j.hazadv.2025.100985","DOIUrl":"10.1016/j.hazadv.2025.100985","url":null,"abstract":"<div><div>Antimony (Sb) induces detrimental toxicities on plant growth, yet the underlying mechanisms are under-explored. In this study, a comprehensive approach combining physiological and transcriptomic analyses was adopted to investigate the morpho-physiological, biochemical and molecular responses of wheat to Sb toxicity. The results showed that Sb treatments (&gt; 10 μM) significantly reduced wheat biomass accumulation (by 52.2 %-67.8 % in shoots, and 24.9 %-56.3 % in roots) through inhibiting root development and impaired photosynthetic performance, accompanied by elevated malondialdehyde (MDA) levels. At 25 μM Sb, the antioxidant system and its corresponding genes responded dynamically to oxidative stress, while cell wall components and metal/metalloid transporter proteins synergistically contributed to Sb detoxification and tolerance. Notably, Sb stress upregulated BIN2-related genes in the brassinosteroid (BR) signaling pathway, thereby suppressing BZR1/2 expression and disrupting BR signal transducion. Furthermore, exogenous BR application mitigated Sb-induced growth inhibition by reducing MDA accumulation and restoring growth parameters. These findings reveal key molecular mechanisms underlying wheat’s response to Sb toxicity and highlight the potential of BR application as a strategy to enhance Sb tolerance in wheat.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"21 ","pages":"Article 100985"},"PeriodicalIF":7.7,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145924736","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 new approach to sustainable management of industrial phosphogypsum waste: mechanism exploration and industrial application","authors":"Yifei Meng ,&nbsp;Siyu Gan ,&nbsp;Jing Liang ,&nbsp;Bin Chen ,&nbsp;Rongyue Ma ,&nbsp;Yasmeen Alhijjawi ,&nbsp;Fan Yang ,&nbsp;Shan Ren ,&nbsp;Chi He ,&nbsp;Jinpeng Shi ,&nbsp;Aibin Zhu ,&nbsp;Chunbao Xu ,&nbsp;Chunli Zheng","doi":"10.1016/j.hazadv.2026.101032","DOIUrl":"10.1016/j.hazadv.2026.101032","url":null,"abstract":"<div><div>A novel inexpensive modified calcium oxide (MCA) was prepared using commercial calcium oxide (CCO) and <em>n-</em>butanol and applied to curing phosphogypsum (PG) waste. With the MCA, the soluble phosphorus (SP), soluble fluoride (SF) and pH of PG changed from 230.6 mg/L, 180.7 mg/L and 2.89 drastically to 0.46 mg/L, 8.3 mg/L and 8.58 after 3 days, meeting the GB8978–1996 (SP≤0.5 mg/L, SF≤10 mg/L, pH = 6∼9), remaining stable even after 90 days. Our mechanism study revealed that the MCA reacted with SP to form amorphous CaHPO₄ which further tranformed to Ca₅(PO₄)₃OH. Ca₅(PO₄)₃OH combined with SF to produce Ca₅(PO₄)₃F (K_sp=2.1 × 10^–59). Compared to CaF₂ and CaHPO₄, the K_sp of Ca₅(PO₄)₃F decreased markedly by approximately 10⁴⁸ and 10⁵² times. More importantly, in this work MCA has been industrially applied to cure 790,000-tons PG. Moritoring for &gt;500 days showed that the SP, SF and pH values met the GB8976–1996 standard continuously. This study demonstrated a promising new approach to sustainable management of industrial PG waste by treating PG with the novel inexpensive MCA to solidify SF and SP into precipitates of Ca₅(PO4)₃F with greatly improved long-term stability.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"21 ","pages":"Article 101032"},"PeriodicalIF":7.7,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146077168","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":"Facile hydrothermal fabrication and performance tuning of rGO/LDH nanocomposites for efficient photocatalytic degradation of Congo Red","authors":"Divya Mahar,&nbsp;Nitish Semwal,&nbsp;Tanuja Arya,&nbsp;Mahesh Chandra Arya","doi":"10.1016/j.hazadv.2026.101014","DOIUrl":"10.1016/j.hazadv.2026.101014","url":null,"abstract":"<div><div>Water pollution is a critical global issue intensified by industrialization. The release of toxic organic pollutants severely impacts aquatic ecosystems and public health. This study reports the green hydrothermal synthesis of rGO/Cu/Fe/Al LDH nanocomposites with varying rGO contents and their evaluation for photocatalytic efficiency. To explore the morphology, composition, and optical behavior of the synthesized nanocomposites, a range of analytical tools such as FE-SEM, HR-TEM, XRD, FT-IR, Raman, UV–Vis DRS, TGA, BET, XPS, and zeta potential analyses were employed. Furthermore, Photocatalytic degradation investigations demonstrated that the 3 wt% rGO/LDH nanocomposite exhibited superior degradation efficiency of 98.4% for Congo Red (CR) within 90 min under solar light irradiation. Key experimental factors, including pH, dose of catalyst, contact time, and concentration of dye, were methodically optimized employing the response surface methodology (RSM) coupled with Box-Behnken Design (BBD) approach. The observed pseudo-first-order kinetic rate constant was calculated as 0.0181 min⁻¹. Structural analysis confirmed the nanocomposite’s hydrotalcite-like morphology, accompanied by a high specific surface area (SBET = 213.13 m²/g), pronounced solar light absorption, and a narrow band gap energy (Eg =1.9 eV). Under optimized reaction conditions—0.5 mg/mL catalyst loading, 70 ppm initial dye concentration, and natural solution pH of 5.8, 98.4% degradation of CR was achieved within 90 min. Stability tests revealed that the 3 wt% rGO/LDH nanocomposite maintained 84.9% of its photocatalytic activity after five successive cycles, demonstrating remarkable reusability. The addition of rGO significantly improved the photocatalytic activity of LDH, suggesting its potential for efficient and reusable environmental remediation.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"21 ","pages":"Article 101014"},"PeriodicalIF":7.7,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145976536","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":"Biodegradation of Furanic aldehydes by a bacterial consortium: Toward sustainable biofuel production and industrial wastewater detoxification","authors":"Anastasia N. Golysheva ,&nbsp;Tatyana S. Belousova ,&nbsp;Elizaveta A. Lantsova ,&nbsp;Vyacheslav A. Arlyapov ,&nbsp;Bogdan Ya. Karlinskii ,&nbsp;Valentine P. Ananikov","doi":"10.1016/j.hazadv.2026.101026","DOIUrl":"10.1016/j.hazadv.2026.101026","url":null,"abstract":"<div><div>Accumulation of furanic aldehydes, including furfural (FF) and 5-(hydroxymethyl)furfural (HMF), poses a major bottleneck in some microbial conversions of lignocellulosic biomass to bioethanol. These compounds significantly impair microbial activity in both biofuel fermentation and industrial wastewater treatment systems. In this study, a microbial consortium composed of <em>Rhodococcus erythropolis</em> Ac-858, <em>Rhodococcus fascians</em> Ac-1462, and <em>Pseudomonas veronii</em> B-877 was developed and evaluated for its capacity to biodegrade FF and HMF under model bioreactor conditions. The consortium demonstrated complete degradation of FF (4 g/L) within 48 hours under aerobic conditions and substantial conversion of HMF to non-toxic intermediates. Distinct metabolic pathways were observed depending on aeration intensity: FF and HMF were reduced to furfuryl alcohol and 2,5-bis(hydroxymethyl)furan (BHMF) under aerobic conditions, while oxidation under oxygen limitation produced furoic acid and 2,5-furandicarboxylic acid (FDCA). The synergistic action between <em>P. veronii</em> (reductive) and <em>Rhodococcus spp.</em> (oxidative) was confirmed. Scanning electron microscopy and fractal analysis revealed significant morphological stress responses to furanic aldehydes, with species-specific adaptation patterns. Phytotoxicity tests with <em>Lepidium sativum</em> (watercress) and <em>Lemna spp.</em> (duckweed) showed that the treated culture fluid, after appropriate dilution, met safety thresholds for environmental discharge. This study introduces a biologically based strategy for efficient removal of furanic inhibitors in bioethanol production and industrial effluents, with potential scalability and compliance with discharge regulations. The findings offer a promising route toward improving the environmental sustainability and economic viability of biorefinery and wastewater treatment technologies.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"21 ","pages":"Article 101026"},"PeriodicalIF":7.7,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146022376","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":"Transforming invasive weeds Typha angustifolia into NaOH-functionalized carbon for efficient tetracycline antibiotic removal: Experimental and theoretical validation","authors":"Insha Hamid ,&nbsp;Masood Ahmad Rizvi ,&nbsp;Waheed Ahmad Khanday ,&nbsp;Irena Kostova","doi":"10.1016/j.hazadv.2025.100997","DOIUrl":"10.1016/j.hazadv.2025.100997","url":null,"abstract":"<div><div>Eutrophication-driven invasive weeds represent a major ecological challenge but also an underutilized biomass resource. In this study, narrow-leaf cattail (<em>Typha angustifolia</em>) was valorized into an NaOH-functionalized activated carbon (Ty-AC) for the efficient removal of tetracycline (TC) antibiotics from water. The optimized Ty-AC (Typha:NaOH = 1:3) exhibited a high BET surface area of 1324.022 m²/g, a total pore volume of 2.12 m³/g, and an average pore width of 2.3 nm. The highest removal efficiency was achieved with an initial TC concentration of 100 ppm at pH 7 and a temperature of 50 °C within 8 h of time. TGA studies suggested thermal stability with a strong graphitic structure, while FTIR analysis confirmed enrichment of oxygenated functional groups (–OH, –COOH, –COO⁻) responsible for increased surface polarity and adsorption affinity. Effective alkali species incorporation was confirmed by the EDX analysis. Adsorption isotherm, kinetic data, and thermodynamic data for TC confirmed Langmuir and pseudo-second-order models as the best-fit models and the adsorption process as endothermic and spontaneous. The Langmuir equation also revealed the maximum adsorption capacity of 382.166 mg/g, underscoring the adsorbent’s excellence in TC removal. Computational molecular mechanics (MM2) simulations validated that NaOH-induced surface hydroxylation enhances TC adsorption by intensifying hydrogen bonding and electrostatic interactions. The adsorbent demonstrated excellent regeneration and stability by retaining 97.8% of the removal efficiency even after ten adsorption-desorption cycles. This work introduces a sustainable route for transforming invasive water blooms into high-performance adsorbents, offering a scalable and economical strategy for antibiotic pollution remediation in water systems.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"21 ","pages":"Article 100997"},"PeriodicalIF":7.7,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146022371","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":"Radionuclide associations in a concrete core extracted from the decommissioned hunterston A spent nuclear fuel pond","authors":"Anna E. Denman ,&nbsp;Gareth T.W. Law ,&nbsp;Thomas Carey ,&nbsp;Nicholas T. Smith ,&nbsp;Francis R. Livens ,&nbsp;Peter Quayle ,&nbsp;Aula A. Alwattar ,&nbsp;Gianni F. Vettese ,&nbsp;Joyce W.L. Ang ,&nbsp;Scott L. Heath","doi":"10.1016/j.hazadv.2025.100945","DOIUrl":"10.1016/j.hazadv.2025.100945","url":null,"abstract":"<div><div>Characterisation of a unique concrete core obtained from beneath the water level of the decommissioned Hunterston A spent nuclear fuel (SNF) storage pond has been conducted to aid understanding of long-term radionuclide contamination in nuclear infrastructure. Radionuclide contamination is primarily isolated to the protective coatings adhering to the concrete walls, with the majority of activity arising from fission products (Sr-90 and Cs-137) and actinides (Am-241 and Pu-241) as determined by gamma spectroscopy and liquid scintillation counting. Analysis of this core in vertical cross-section showed that radionuclides had penetrated through the protective layers and into the underlying, bulk concrete, with Cs-137 detected to a depth of 10 mm. X-ray diffraction (XRD), scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDX) and autoradiography suggest that Sr-90 contamination was concentrated within the cement phases, <em>via</em> interaction with calcium silicate hydrate (CSH), while Cs-137 was associated with aggregate materials, including quartz and gabbro. Decontamination experiments using cross-linked polymer hydrogels demonstrate time-dependent decontamination of the painted surface where the hydrogels were effective in removing both fission products and actinides.</div></div><div><h3>Environmental implication</h3><div>Concrete and rubble comprises up to 90 % of the volume of low level and very low level waste generated from decommissioning at nuclear sites and, in the UK, the total volume of such wastes may be as great as 4 million m³. Sentencing such wastes to the correct waste stream, in accordance with the Waste Hierarchy, potentially offers major cost and time savings, and reduced environmental impact. This study provides insight into the long-term contamination of concrete infrastructures and highlights how hydrogels can be used to reduce the volume of intermediate level waste generated during decommissioning operations.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"21 ","pages":"Article 100945"},"PeriodicalIF":7.7,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145618466","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":"Elevated thallium enrichment, source, and health risks in soils surrounding a lead–zinc smelter, Southwest China","authors":"Qiuyue Chen ,&nbsp;Yuqiang Liu ,&nbsp;Weishi Li ,&nbsp;Wenhan Zhao ,&nbsp;Haixue Li ,&nbsp;Qifei Huang ,&nbsp;Yanmei Yang ,&nbsp;Tingtao Bi ,&nbsp;Jie Long","doi":"10.1016/j.hazadv.2025.100968","DOIUrl":"10.1016/j.hazadv.2025.100968","url":null,"abstract":"<div><div>While soil pollutants such as As, Pb, Zn, and Cd are well studied, knowledge of the distribution, source identification, and risks of highly toxic thallium (Tl) remains insufficient. Analysis of 601 soil samples across 175 sites at a Pb–Zn smelter in southwestern China revealed an average Tl concentration of 3.91 mg/kg (range: 0.31-71.60 mg/kg). The highest Tl content (71.6 mg/kg) occurred at 0-0.5 metres depth in capacity restoration areas, exceeding crustal abundance and Chinese soil background values by 159.11-fold and 122.60-fold, respectively. The capacity restoration areas experienced peak contamination, followed by Metallurgical Plant II. Principal component analysis indicated that mining activities (contribution rate: 38.95 %), atmospheric deposition, transport (contribution rate: 30.59 %), and rainfall (contribution rate: 25.93 %) constitute the primary sources of pollution. The pollution indicators and risk assessments revealed Pb, Cd, and Zn as the main cumulative contaminants, with higher risk indicators than the other heavy metals (HMs). Probabilistic health risk assessments indicate that carcinogenic and noncarcinogenic risks primarily arise from exposure pathways, including oral ingestion, dermal contact, and inhalation. The average HIs for adults and children were 9.35E+06 and 4.98, respectively. The average TCR was 9.78E-04 for adults and 3.26E-03 for children. Unacceptable noncarcinogenic and carcinogenic risks from HMs were detected for both children and adults, with Pb and Cd posing greater risks than Zn and Tl. This study offers critical support for controlling soil pollution, especially Tl, in Pb–Zn smelting areas.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"21 ","pages":"Article 100968"},"PeriodicalIF":7.7,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145790577","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":"Environmental fate of sartans after treatment with sodium hypochlorite, the most widespread disinfection process","authors":"Armando Zarrelli","doi":"10.1016/j.hazadv.2026.101016","DOIUrl":"10.1016/j.hazadv.2026.101016","url":null,"abstract":"<div><div>Emerging contaminants (ECs) pose significant environmental and health risks due to their persistence and incomplete removal in conventional wastewater treatment plants (WWTPs). During the disinfection stage – commonly chlorination with sodium hypochlorite – these compounds can transform into disinfection by-products (DBPs), some of which are more toxic than the parent molecules. This review examines the environmental fate of sartans, a class of antihypertensive drugs increasingly detected in aquatic ecosystems. It analyzes the formation, degradation pathways, and ecotoxicological profiles of DBPs from Irbesartan, Olmesartan, and Candesartan. Results show that degradation typically initiates at side chains attached to the biphenyl moiety, producing recurrent DBPs that may serve as indicators of treatment efficiency. Ecotoxicity tests on <em>Daphnia magna, Aliivibrio fischeri</em>, and <em>Raphidocelis subcapitata</em> revealed that certain DBPs exhibit higher toxicity than their parent drugs, emphasizing the need for improved disinfection strategies to safeguard both environmental and public health.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"21 ","pages":"Article 101016"},"PeriodicalIF":7.7,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145976452","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":"Sustainable leaching of nickel and cobalt from asbestos waste using deep eutectic solvents: Kinetic modeling and recovery performance","authors":"Rustam Sharipov ,&nbsp;Assel Dagubayeva ,&nbsp;Galymzhan Maldybayev ,&nbsp;Mohamad Nasir Mohamad Ibrahim ,&nbsp;Omirserik Baigenzhenov ,&nbsp;Tiancheng Mu","doi":"10.1016/j.hazadv.2025.100948","DOIUrl":"10.1016/j.hazadv.2025.100948","url":null,"abstract":"<div><div>A sustainable hydrometallurgical route was developed for the selective recovery of nickel and cobalt from asbestos production waste using a novel deep eutectic solvent (DES) composed of ethylene glycol and hydroxylamine hydrochloride. Magnetic separation yielded a Ni–Co-enriched fraction with a 10–12-fold increase in target metal content relative to the raw waste, as confirmed by WD-XRF, SEM/EDS, and chemical analysis. Under optimized conditions (80 °C, 4 h, L/S = 4:1), leaching efficiencies of 72.4 % for Ni and 79.6 % for Co were achieved, while co-dissolution of Fe, Mg, and Si remained below 8 %, demonstrating exceptional selectivity. Kinetic analysis revealed a dual-control mechanism: the excellent fit to the Prout–Tompkins model (R² &gt; 0.99) reflects autocatalytic, ligand-assisted surface reactions driven by Ni^2+/Co²⁺ coordination with DES components, whereas the low activation energies (15.73 kJ/mol for Ni, 13.68 kJ/mol for Co) and strong agreement with the Jander diffusion model indicate that mass transfer through the evolving porous residue governs the overall rate. Critically, ¹H NMR spectroscopy of the spent DES shows pronounced signal broadening and attenuation due to paramagnetic Ni^2+/Co²⁺ ions, providing direct, solution-phase evidence of metal - ligand complexation - a key advancement over indirect FTIR data alone. Complementary SEM and XRD analyses confirm selective phase dissolution without bulk matrix degradation. These results establish the DES as an environmentally benign, ligand-functionalized leaching medium that enables the valorization of hazardous asbestos waste into a secondary source of critical metals, aligning with green and circular hydrometallurgical principles.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"21 ","pages":"Article 100948"},"PeriodicalIF":7.7,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145618469","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}