Environmental Technology & Innovation最新文献

{"title":"Adaptation responses of Dunaliella sp. and its natural symbiotic bacteria to sulfamethoxazole","authors":"Xiao Tan ,&nbsp;Gang Pan ,&nbsp;Wenxue Che ,&nbsp;Ying Man ,&nbsp;Liyi Wang ,&nbsp;Jinting Li ,&nbsp;Hui Zhao","doi":"10.1016/j.eti.2025.104171","DOIUrl":"10.1016/j.eti.2025.104171","url":null,"abstract":"<div><div>Microalgal-bacterial consortia provide a sustainable, low-cost solution for antibiotic-contaminated wastewater remediation. Microalgae cultivation typically involves natural symbiotic bacteria, which are often overlooked. To fill this gap, this study evaluated the adaptive response of <em>Dunaliella</em> sp. and its natural symbiotic bacteria to sulfamethoxazole (SMX) through cultivation experiments and 16S rDNA sequencing. The results demonstrated strong SMX tolerance but limited removal efficiency by the consortium. The adaptive responses were characterized by increased bacterial diversity and connectivity, with quorum sensing bacteria-driven community changes and biofilm formation playing a critical role in this process. <em>Dunaliella</em> sp. exhibited strong antioxidant capacity (with catalase playing a key role) and increased extracellular polymeric substances secretion, which not only contributed to its tolerance but also promoted microalgae-bacteria interactions, enhancing consortium adaptability. These findings strengthen our understanding of the responses of natural symbiotic bacteria to antibiotics and advance the development of microalgae-bacteria symbiosis technology for wastewater treatment.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104171"},"PeriodicalIF":6.7,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143725635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Birnessite transformation increases Cd(II) exposure risk in contaminated soils by disrupting sequestration onto resulting fulvic acid and manganese oxide mineral composites","authors":"Changsheng Jin ,&nbsp;Yin Gao ,&nbsp;Jingjing Lu ,&nbsp;Yuxi Liu ,&nbsp;Baowei Hu","doi":"10.1016/j.eti.2025.104172","DOIUrl":"10.1016/j.eti.2025.104172","url":null,"abstract":"<div><div>Soils contain abundant organic matter (OM) and Mn(oxyhydr)oxides (MnOs) composites, which primarily control the geochemical behavior of Cd. However, the impact of manganese phase transformation on the retention and availability of Cd remains unclear. Here, four organo-mineral composites were synthesized using birnessite (δ-Mn^ⅣO₂), β-Mn^Ⅲ,ⅣO₂, γ-Mn^ⅢOOH, and Mn^Ⅱ,Ⅲ₃O₄ with fulvic acid (FA), during adsorption to preformed MnOs with 5 wt% organic carbon loadings. The performance and underlying Cd(II) adsorption mechanism by resulting FA-MnO composites were explored. Results showed that δ-MnO₂ transformation decreases Cd(II) adsorption capacity by 23.02–45.44 % on the resulting FA-MnOs. This reduction was attributed to increased aggregation of MnO particles and competition from generated Mn(II/III) for available vacancy sites. Cd undergoes redistribution within the FA-MnOs during the transformation of δ-MnO₂. The amount of Cd associated with MnOs decreases by 9.46–37.08 %, while OM bound-Cd increases by 2.82–10.49 %. FAδ-MnO₂ predominantly interacted with Cd(II) through tetravalent manganese, forming stable coordination or chemical bonds. In contrast, FAγ-MnOOH and FA-Mn₃O₄ primarily interacted with Cd(II) through divalent manganese via electrostatic attraction and ion exchange, resulting in weaker binding stability. These findings provide new insights into the roles of manganese transformation in the geochemical cycling of Cd in soils.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104172"},"PeriodicalIF":6.7,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of cationic alkyl chain lengths on the adsorption performance of supported imidazole-based ionic liquids for vanadium(V) recovery","authors":"Shenxu Bao ,&nbsp;Bo Chen ,&nbsp;Yu Liang ,&nbsp;Yimin Zhang ,&nbsp;Liuyi Ren","doi":"10.1016/j.eti.2025.104174","DOIUrl":"10.1016/j.eti.2025.104174","url":null,"abstract":"<div><div>Imidazole-based ionic liquids (ILs) with various cationic alkyl chain lengths were immobilized on polystyrene resins (PS[C_nmim][Cl], n = 2, 4, 6, 8, 12) and applied to separate vanadium(V) from vanadium-bearing solutions. The effects of alkyl chain lengths on the adsorption capacity, selectivity and stability of the supported ILs were thoroughly investigated and compared. As the alkyl chain length increases, the adsorption rate of the supported ILs decreases, leading to a longer adsorption equilibrium time. The alkyl chain length hardly affects the adsorption selectivity of vanadium over main impurities. However, the supported ILs with longer alkyl chain length exhibit greater cyclic stability. Among the synthesized five kinds supported ILs, PS[C₆mim][Cl] presents excellent adsorption performance toward vanadium(V). The adsorption capacity reaches 248.25 mg/g, which keeps 94.21 % after 15 adsorption-desorption cycles. Moreover, the separation coefficient of PS[C₆mim][Cl] for V/Fe and V/Al reaches 24.22 and 7.7, severally. Vanadium(V) is mainly adsorbed onto the supported ILs by chemisorption as monolayer, the adsorption mechanism of which is barely affected by the alkyl chain lengths. The adsorption of vanadium is an endothermic process with increasing entropy, and elevated temperature is conducive to adsorption process. In addition, microscopic characterizations show that the structure of the supported ILs is stable, and the ILs are firmly loaded during multiple cycles. This study provides a reference with the design of ILs cationic alkyl chain for supported imidazole-based ILs in the field of vanadium separation and enrichment.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104174"},"PeriodicalIF":6.7,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Deciphering hypersaline tolerance mechanism of the pyridine-degrading strain Rhodococcus sp. PD10","authors":"Yangfan Hu ,&nbsp;Zhichun Wang ,&nbsp;Zizhen Liu ,&nbsp;Korakot Sombatmankhong ,&nbsp;Bo Yu","doi":"10.1016/j.eti.2025.104168","DOIUrl":"10.1016/j.eti.2025.104168","url":null,"abstract":"<div><div>Pyridine is a common pollutant in the hypersaline wastewater from chemical and pharmaceutical industries, posing environmental and health risks. A <em>Rhodococcus</em> sp. strain capable of effectively degrading pyridine was isolated and enhanced to tolerate 10 % NaCl through adaptive laboratory evolution, resulting in <em>Rhodococcus</em> sp. PD10. Comparative genome analysis with qRT-PCR experimental verification suggested that the inhibition of cAMP degradation, accompanied with enhanced salt-tolerance of protein and increased energy production, likely contributed to strain PD10’s ability to survive in high salinity. Notably, an unusual metabolite, 7-methylguanine, was newly discovered to accumulate under abiotic conditions using untargeted metabolomics, and it was experimentally shown to favor cell growth in hypersaline environments, alongside compatible solutes like ectoine and the rare compound <em>N</em>^<em>δ</em>-acetylornithine. Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis further indicated that preserving cell membrane stability and fluidity is crucial for the survival of the strain under high salt stress. This study systematically uncovered the salt-tolerance mechanism of <em>Rhodococcus</em> sp. strain PD10, demonstrating its promising industrial applications.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104168"},"PeriodicalIF":6.7,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143725634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative investigation of various framework atom substituted MWW-type molecular sieves for methyl chloride adsorption","authors":"Linh Mai Tran,&nbsp;Trinh Thuan Khiet Nguyen,&nbsp;Yunhye Cho,&nbsp;Sungjoon Kweon,&nbsp;Min Bum Park","doi":"10.1016/j.eti.2025.104166","DOIUrl":"10.1016/j.eti.2025.104166","url":null,"abstract":"<div><div>To effectively remove the harmful methyl chloride (CH₃Cl) via an adsorption technique, it is crucial to enhance the surface characteristic of adsorbent. In this study, we prepared various heteroatom-substituted MWW-type zeolitic adsorbents through a simple hydrothermal treatment and investigated the effect of CH₃Cl adsorption according to the substituted hetero elements. We systematically investigated the structural properties, chemical state of framework atoms, concentrations of hydroxyl groups, and amounts and strength of Lewis acid sites of the prepared zeolitic adsorbents. Among the studied adsorbents, the aluminosilicate Al-MWW exhibited the highest concentration and the strongest strength of Lewis acid site, coupled with moderate hydrophilicity. Despite its moderate hydrophilicity, this Al-MWW showed the highest CH₃Cl adsorption capacity primarily due to its highest Lewis acidic properties. When the differences in Lewis acid concentrations were not significant, hydrophilicity played the second role in CH₃Cl adsorption. Furthermore, the superior amount and strength of Lewis acid site of Al-MWW compared to the other x-MWW adsorbents resulted in the highest concentration and strongest affinity for chemisorbed CH₃Cl.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104166"},"PeriodicalIF":6.7,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of SiO2 and CaO on Cr(VI) formation during heat treatment of Cr(III)-bearing sludge","authors":"Yonglin Yang ,&nbsp;Jiangyong He ,&nbsp;Shuaige Shi ,&nbsp;Long Yan ,&nbsp;Jian Li ,&nbsp;Xiaoyong Fan ,&nbsp;Bi Chen ,&nbsp;Guohui Dong ,&nbsp;Hongrui Ma","doi":"10.1016/j.eti.2025.104167","DOIUrl":"10.1016/j.eti.2025.104167","url":null,"abstract":"<div><div>There is a key issue about formation of highly toxic and easily dissoluble Cr(VI) during heat treatment of Cr-bearing solid waste, resulting in a prominent increase of environmental risk of incineration product. In this study, the effects of CaO and SiO₂ on formation and reduction of Cr(VI) were investigated during heating of Cr-bearing simulated sludge (Cr-SS) and Cr₂O₃, exploring Cr(III) oxidation mechanism. The findings indicates that doping CaO significantly promotes Cr(III) oxidation to Cr(VI), and chromium speciation vary with temperature. At 300℃, leaching amount of Cr(VI) in Cr-SS samples increases sharply to 9.3 % of total Cr. In contrast, no Cr(VI) was detected in Cr₂O₃ samples. Above 300℃, oxidation rates of Cr(III) in different samples of Cr-SS and Cr₂O₃ exhibit the same trend with temperature increasing. Above 1000℃, new Cr-containing crystalline phases were observed, like CaCr₂O₄ and Ca₃(CrO₄)₂. The oxidation rate of Cr(III) is positively connected with the adding amount of CaO. Besides, doping SiO₂ to sludge prominently inhibits Cr(III) oxidation or facilitate Cr(VI) reduction at 600℃-1200℃, which is also confirmed by thermodynamic calculation, attributing to formation of Ca₅Cr₂SiO₁₂ and CaCr₂O₄. The number of holes in valence band will be changed through substitution of Cr(III) ions by cations of different valence states, thus facilitate or inhibit Cr(III) oxidation. The ions (&lt;III) can promote Cr(III) oxidation, while ions (&gt;III) can inhibit Cr(III) oxidation and promote Cr(VI) reduction. Introducing SiO₂ or Si-enriched materials to chromium-bearing wastes may be a promising alternative to solve the problem of highly toxic Cr(VI) formation during heat treatment.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104167"},"PeriodicalIF":6.7,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Important roles of immobilization in improving low-temperature nitrogen removal of cold-shock Anammox sludge and related mechanism","authors":"Jing Zhang ,&nbsp;Yeqi Cao ,&nbsp;Jianwei Chen ,&nbsp;Linhua Zhang ,&nbsp;Wenjing Wu ,&nbsp;Jun Li ,&nbsp;Yijuan Liu ,&nbsp;Tongxuan Gai ,&nbsp;Junhao Yu ,&nbsp;Huaying Zhang","doi":"10.1016/j.eti.2025.104170","DOIUrl":"10.1016/j.eti.2025.104170","url":null,"abstract":"<div><div>Efficient nitrogen removal via the Anammox process at low temperatures is challenging, as it relies heavily on the maintenance of Anammox activity and biomass. In this study, a novel combination of biological immobilization and cold shock treatment was successfully applied to enhance specific Anammox activity (SAA) and biomass retention under different low temperatures. The results indicated that the gel particles immobilizing low cold-shock biomass (only 0.53 g/L) achieved superior SAA and exhibited excellent mechanical strength at 25–5°C. Additionally, the SAA and mass transfer performance of the immobilized cold-shock particles were significantly influenced by particle size, with the optimal range determined to be 3.2–4.0 mm. Consequently, immobilized cold-shock particles (M1) were prepared with an optimal biomass content of 0.53 g/L and a particle size of 3.2–4.0 mm. At low temperatures of 10–5°C, the M1 particles demonstrated in-situ nitrogen removal efficiencies of 52 %-72 % and ectopic SAA values of 3.0–4.5 µmol/(g VSS·h), markedly outperforming non-immobilized cold-shock granular sludge (M0). This was attributed to enhanced biomass retention and improved ammonium conversion kinetics facilitated by immobilization, particularly at 10 and 5°C. Moreover, the higher abundances of <em>Candidatus</em> Kuenenia and <em>Candidatus</em> Brocadia within M1 particles were critical for sustaining nitrogen removal performance under extreme low-temperature conditions. Importantly, the upregulated expression of cold proteins (CspA, CspB, and PpiD) and the increased content of C₁₈[5]-ladderane lipids in M1 particles significantly contributed to the enhanced low-temperature adaptability of the cold-shock sludge.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104170"},"PeriodicalIF":6.7,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biodegradation of low-density polyethylene plastics by cellulolytic Pseudomonas aeruginosa isolated from the rumen of Swamp buffalo and the in vitro end-product characteristics","authors":"Metha Wanapat ,&nbsp;Uswatun Muslykhah ,&nbsp;Maharach Matra ,&nbsp;Gamonmas Dagaew ,&nbsp;Chaichana Suriyapha ,&nbsp;Sukruthai Sommai ,&nbsp;Sunisa Pongsub ,&nbsp;Srisan Phupaboon","doi":"10.1016/j.eti.2025.104175","DOIUrl":"10.1016/j.eti.2025.104175","url":null,"abstract":"<div><div>Plastic waste, particularly from packaging materials, has become a significant environmental concern due to its slow degradation and widespread use. Low-density polyethylene (LDPE), commonly used in plastic bags and packaging, is resistant to biodegradation due to its hydrophobic backbone and high thermal stability. This study aimed to investigate the potential of plastic-degrading bacteria isolated from the microbiome of Swamp buffaloes (<em>Bubalus bubalis</em>) to degrade LDPE plastic. Twelve bacterial isolates were screened for plastic-degrading capabilities using <em>Pseudomonas</em>-Centimide agar, and identified via 16S rDNA sequencing. Four strains, identified as <em>Pseudomonas aeruginosa</em> NCTC13620 (accession no. MK332579.1), Khon Kaen University (KKU) -LDPE4, KKU-LDPE5, KKU-LDPE8, and KKU-LDPE9, exhibited high cellulolytic activity based on cellulose and starch hydrolysis. The biodegradation and biofilm formation potential of these strains were evaluated in <em>in vitro</em> gas fermentation experiments conducted over 10, 20, and 30-day incubation periods. Results showed that <em>P. aeruginosa</em> KKU-LDPE4 significantly enhanced microbial population growth, from log 6.6–7.9 CFU/mL, and increased the pH from 6.60 to 6.62 by the end of the 30-day incubation. Additionally, carbon dioxide production increased significantly (p &lt; 0.05), along with a weight loss of 2.66 % in the LDPE fragments, while methane production remained negligible. These findings suggest that <em>P. aeruginosa</em> KKU-LDPE4 holds promise as an effective microbial candidate for LDPE plastic biodegradation. The study highlights the potential of using bacterial strains for eco-friendly solutions to plastic waste degradation.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104175"},"PeriodicalIF":6.7,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Waste to wastewater treatment: Graphene quantum dots embedded poly(ethylene terephthalate) membranes for efficient phenol removal","authors":"Muhammad Kashif Raza ,&nbsp;Jisha Kuttiani Ali ,&nbsp;Dinesh Shetty ,&nbsp;Emad Alhseinat","doi":"10.1016/j.eti.2025.104163","DOIUrl":"10.1016/j.eti.2025.104163","url":null,"abstract":"<div><div>Efficient waste management strategies are essential for addressing environmental degradation and advancing sustainable development. Utilizing waste materials in wastewater treatment presents a promising avenue toward this goal. This study investigates the use of waste carton paper and waste plastic bottles in composite membranes for treating wastewater containing phenol as a contaminant. It introduces a unique approach by utilizing waste carton paper as a bio-source for the synthesis of graphene quantum dots (GQDs) and incorporating them as nanofillers in polyethylene terephthalate (PET) membranes derived from recycled plastic bottles. Furthermore, this study addresses the performance and stability of GQDs-PET membranes for smaller dissolvable organics such as phenol in semi-pilot UF systems. An array of characterizations was performed to confirm the successful application of waste carton paper as a bio source for synthesizing GQDs and to study their effect on the PET membrane structure and properties. The pore size, porosity and wetting properties of the GQDs-PET membranes could be flexibly modulated by regulating the contents of the GQDs. The performance stability of fabricated membranes was evaluated using a continuous operating semi-pilot scale cross-flow ultrafiltration (UF) setup. The optimal GQDs-PET membrane showed a higher water flux (24 L/m².hr.bar) than the pristine PET membrane (9.9 L/m².hr.bar) and demonstrated enhanced removal performance for phenol, ∼ 94 %, under alkaline feed conditions (pH 9.5) for more than 4 h. The stable phenol removal performance of the GQDs-PET membrane for a longer time can be attributed to the electrostatic repulsions between the membrane surface and phenoxide ion at a higher pH induced by GQDs in the PET membrane structure. These results revealed that the as-prepared GQDs-PET composite membranes possessed great potential for actual wastewater advanced treatment and purification. Additionally, this work supports sustainable development and circular economy principles by repurposing waste plastic bottles and carton paper for efficient wastewater treatment applications.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104163"},"PeriodicalIF":6.7,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of vermiculite on in-situ super-stable mineralization and amelioration on sodic soil","authors":"Ruifa Chai ,&nbsp;Xinyuan Sun ,&nbsp;Sai An ,&nbsp;Tong Lin ,&nbsp;Haoran Wang ,&nbsp;Wei Chen ,&nbsp;Yu-Fei Song","doi":"10.1016/j.eti.2025.104156","DOIUrl":"10.1016/j.eti.2025.104156","url":null,"abstract":"<div><div>As a non-traditional cultivated land resource that can be reformed, sodic soil after amelioration can be effectively utilized to alleviate the food crisis. It is crucial to develop a new strategy that is efficient, cost-effective, and environmentally friendly for sodic soil remediation. Vermiculite features a high cation exchange capacity and porous structure. By adding Mg²⁺-intercalated vermiculite (VMT) and Al₂(SO₄)₃ into the sodic soil, detailed <em>quasi-in-situ</em> X-ray diffraction and transmission electron microscope demonstrated the mineralization process. The free OH^–, CO₃^2– and Cl^– can be <em>in-situ</em> super-stable mineralized into MgAl-layered double hydroxide (MgAl-LDH). The CO₃^2– and Cl^– were confined in the interlayer of MgAl-LDH, while OH^– reacted with Mg²⁺ and Al³⁺ to form the laminate of MgAl-LDH. At the same time, due to slow release of Mg²⁺ from VMT, the cationic vacancy can be formed, which can be filled by large amounts of soluble Na⁺ in sodic soil in order to balance the charge. Sodic soil amelioration experiments illustrated that after remediating sodic soil with 2.0 wt% (weight percentage) VMT and Al₂(SO₄)₃ for 150 days, the soil pH decreased from 10.18 to 7.47, while the contents of soluble Na⁺ and CO₃^2– reduced significantly. Moreover, seedling emergence rate of corn and cabbage plants after application of VMT and Al₂(SO₄)₃ of sodic soil increased from 6.3% to 87.5% and 2.5% to 84.1%, respectively. Compared to traditional methods, this method reduced water usage and offered advantages including high mineralization capacity, excellent stability, and fast rate. This work provides deep insight into <em>in-situ</em> super-stable mineralization for sodic soil amelioration using VMT.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104156"},"PeriodicalIF":6.7,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}