Environmental Technology & Innovation最新文献

{"title":"Sustainable biocementation of mine tailings: Reduction of urea requirements through bicarbonate-based MICP","authors":"Héctor Zúñiga-Barra ,&nbsp;Camila Pardo-Vásquez ,&nbsp;Edgar Velastegui ,&nbsp;Jimmy Anderson Martínez-Ruano ,&nbsp;Mariella Rivas ,&nbsp;David Jeison","doi":"10.1016/j.eti.2025.104255","DOIUrl":"10.1016/j.eti.2025.104255","url":null,"abstract":"<div><div>Microbially induced calcite precipitation (MICP) has emerged as a promising technique to contribute to a more sustainable management of mine tailings deposits. While ureolytic activity has been the predominant driver of conventional MICP to date, the associated release of ammonia poses significant environmental hazards. This study explores a novel, environmentally friendly approach by replacing urea with sodium bicarbonate as the carbon source for MICP, with the aim of reducing urea requirements and thus ammonia release. Leveraging the principles of the MICP, it was observed that when urea concentration was reduced to 0.7 M, by replacing it with bicarbonate, surface strength was close to 400 kPa. Furthermore, wind tunnel testing showed a significant reduction in dust emission, where the mass loss rate of the biocemented sample was below 10 kg m⁻² h⁻¹, which means a 9-fold reduction compared to untreated samples. So, it was demonstrated that bicarbonate can effectively replace urea, achieving a relevant reduction of up to 75 % in urea use without compromising the surface strength of the biocemented tailings and reducing the environmental hazards of ammonia release. These results highlight the potential of bicarbonate-based MICP as an innovative and sustainable approach to mitigate the environmental impacts associated with tailings deposits.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104255"},"PeriodicalIF":6.7,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144084254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The impacts of aeration modes and rates on nitrogen conversion and bacterial community composition in a 90-m3 silo composting reactor","authors":"Pengxiang Xu ,&nbsp;Shaoqi Xu ,&nbsp;Yuquan Wei ,&nbsp;Yongdi Liu ,&nbsp;Sheng Hang ,&nbsp;Yue Wang ,&nbsp;Longli Zhang ,&nbsp;Ji Li","doi":"10.1016/j.eti.2025.104265","DOIUrl":"10.1016/j.eti.2025.104265","url":null,"abstract":"<div><div>The silo composting reactor is applicable for the in-situ treatment of organic waste. Ensuring an adequate supply of oxygen can enhance the compost maturity. This study investigated the effects of aeration modes and rates on composting effectiveness and nitrogen conversion. The 24 h uninterrupted aeration mode (K60T0) was conductive to achieving an elevated temperature of 78 °C. The germination index value in the lower layer consistently exceeded 80 % with different aeration modes. The content of total nitrogen (excluding K60T0) and ammonia nitrogen increased progressively with the increase of aeration time. Meanwhile, nitrate nitrogen content exhibited fluctuations, with the lowest content observed in the middle layer. An aeration cycle of 50 min followed by a 10-min pause within an hour resulted in the highest amide nitrogen content of 5.93 g/kg and organic nitrogen content of 2 % in the upper layer. The dominant phylum and genera were <em>Firmicutes</em> and <em>Ureibacillus</em>, respectively. The relative abundance of <em>Firmicutes</em> initially decreased and then increased in general with prolonged aeration time. Additionally, the extension of aeration time altered the nitrogen cycling function within the reactor.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104265"},"PeriodicalIF":6.7,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144068206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Açaí waste and gypsum rapidly enhance ecological functioning in non-weathered, filter press bauxite residue: A one-year field experiment in the humid tropics of Northern Brazil","authors":"Yuuki Silveira Miura ,&nbsp;Jan Mulder ,&nbsp;Valentina Zivanovic ,&nbsp;Ronan Courtney ,&nbsp;Adriana Souza ,&nbsp;Gudny Okkenhaug","doi":"10.1016/j.eti.2025.104270","DOIUrl":"10.1016/j.eti.2025.104270","url":null,"abstract":"&lt;div&gt;&lt;div&gt;In our study, the average annual precipitation is approximately 2085 mm, with an average temperature around 26.6°C. In such climate, organic amendments, like açaí seed waste, decompose relatively fast, thus promptly supplying nutrients, and humified organic matter, while promoting microbial activity essential for initiating soil formation processes. Although, the speed and direction of these processes depend on climatic conditions (e.g. rainfall intensity and distribution) their fluctuations are not expected to be such that they will greatly affect the outcome. Also, frequency and abundance of rainfall may vary in the humid tropics thereby affecting the leaching rate of sodium and other soluble contaminants from the BR following gypsum application. This leaching process is important for the rehabilitation of BR as it facilitates the reduction of alkalinity and salinity—critical factors limiting plant growth in untreated BR (Courtney and Kirwan, 2012; Bray et al., 2018; Miura et al., 2024). Intense rainfall events may cause erosion or loss of amendments applied superficially, thus potentially reducing their effectiveness if appropriate erosion controls are not implemented. In the experimental set up the amendments were well mixed into the soil and the test plots were situated in horizontal terrain to limit surface water runoff and erosion. Important in this respect is that, in some experimental plots, where neither açaí seed waste nor gypsum were applied, a slow infiltration of water into the soil was noted (associated with poor aggregation and structure), commonly leading to water ponding in the plots. Bauxite residue (BR), remaining after alumina production, presents high alkalinity and salinity and to its low fertility hindering ecological restoration. This experiment occurred in Northern Brazil's humid tropics, between August 2021 to August 2022, where we evaluated the effects of adding açaí seed waste (8 % w/w) and gypsum (5 %, 8 %, and 13 % w/w) on plant growth, contaminants uptake and microbial activity in BR. Results showed significant aboveground net primary production of &lt;em&gt;Urochloa brizantha&lt;/em&gt; up to 1.46 kg/m&lt;sup&gt;2&lt;/sup&gt;, within 6 months while no growth was observed on unamended BR or on BR amended with gypsum alone. Furthermore, the amendments significantly enhanced microbial and enzyme activities as indicated by increases in dehydrogenase, β-glucosidase, and average well color development (AWCD) values, indicating improved microbial metabolic functions essential for ecological restoration. Our study is among the first to show that non-weathered filter-press BR in the humid tropics can be remediated effectively and within a year by a combination of açaí seed waste and gypsum. Our results provide a promising approach for large-scale remediation and ecological restoration of bauxite residue storage facilities (BRSF) in tropical regions, contributing to sustainable land management practices with significant biomass productio","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104270"},"PeriodicalIF":6.7,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144154520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced cadmium sequestration from animal waste using a combined modified corn straw biochar: Unraveling the mechanisms and performance in hazardous metal removal","authors":"Ying Mei ,&nbsp;Peng Gao ,&nbsp;Jiang Li ,&nbsp;Xiao-Song He ,&nbsp;Li-Peng Cui ,&nbsp;Ting Zhang ,&nbsp;Ya-Jun Wang ,&nbsp;Peng Xue","doi":"10.1016/j.eti.2025.104256","DOIUrl":"10.1016/j.eti.2025.104256","url":null,"abstract":"<div><div>Cadmium (Cd) is a toxic metallic element, and Cd residues in livestock and poultry manure pose a significant risk to agri-environmental sustainability, food safety and human health as it is returned to the field. This study focuses on the remediation of Cd in livestock manure through the development of a novel modified corn straw biochar (MCSB) using magnesium ions (Mg²⁺), sodium sulfamate (SS), and nano zero-valent iron (nZVI).Comprehensive characterization by scanning electron microscopy (SEM), Fourier transform infrared spectrometry (FTIR), Brunauer-Emmett-Teller (BET), and X-ray diffraction (XRD) reveals that MCSB exhibits enhanced hydrophilicity, with a 260 % increase in specific surface area compared to the unmodified biochar. It contains rich oxygen-containing functional groups and has a rough surface with numerous irregular particles and crystalline substances, providing abundant active sites for Cd adsorption. Adsorption experiments showed that the adsorption process of Cd by MCSB was spontaneous monolayer adsorption. Composting experiments indicate that MCSB effectively promotes the transformation of Cd from bioavailable forms to potentially available and residual states, with conversion efficiencies ranging from 36.98 % to 41.61 %. The passivation mechanism mainly involves electrostatic adsorption and reactions of functional groups. Oxygen-containing groups reduce the bioavailability of Cd, the increased pH enhances the negative charge of MCSB for Cd attraction, and water-soluble Cd is adsorbed and precipitated through interactions with surface functional groups.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104256"},"PeriodicalIF":6.7,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144090378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Challenge or hindrance? The impact of artificial intelligence applications on corporate environmental responsibility under policy and public pressures","authors":"Weiwei Wu ,&nbsp;Dechao Ma","doi":"10.1016/j.eti.2025.104273","DOIUrl":"10.1016/j.eti.2025.104273","url":null,"abstract":"<div><div>Given increasing environmental degradation and the growing emphasis on sustainable development, corporate environmental responsibility (CER) has become a crucial business strategy for consumers, investors, and society. This study explores the relationship between artificial intelligence (AI) applications and CER, while considering the moderating effects of climate policy uncertainty and public environmental concern, using data on A-share listed companies in China from 2012 to 2020. The results reveal an inverted U-shaped relationship between AI applications and CER performance. Climate policy uncertainty weakens the positive impact of AI on CER, while public environmental concern strengthens it. The findings provide valuable guidance for firms on how to strategically apply AI to enhance CER performance, which is substantially important for firms to adapt to policy and public pressure, and achieve sustainable development.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104273"},"PeriodicalIF":6.7,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143949123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergistic impacts of anthropogenic and climatic drivers on total phosphorus dynamics in a mega river basin","authors":"Yuxin Hu ,&nbsp;Hai Su ,&nbsp;Huiyin Song ,&nbsp;Qian Xiong ,&nbsp;Zheng Zhou ,&nbsp;Bo Huang ,&nbsp;Xu Wang ,&nbsp;Naidong Xiao ,&nbsp;Mingxing Yu","doi":"10.1016/j.eti.2025.104259","DOIUrl":"10.1016/j.eti.2025.104259","url":null,"abstract":"<div><div>Total phosphorus (TP) pollution in the Yangtze River basin (YRB) severely threatens ecosystems. Previous studies have examined individual factors affecting TP, but the combined impacts of anthropogenic activities and climate factor remain unclear. This study analyzed TP data from 636 sites in the YRB during 2016–2020 using partial least squares structural equation modeling to assess these combined effects on TP pollution. Results showed government regulation significantly reduced TP concentration from 2016 to 2020. Anthropogenic activities, including changes in landscape, GDP, and population growth, significantly influenced TP concentrations. Cropland and impervious surfaces were major TP sources, while forests acted as effective TP sinks. Landscape fragmentation weakened the ability of source landscapes to export TP to water bodies and the purification capacity of sink landscapes, while aggregation enhanced sink capacity. GDP and population growth were positively correlated with TP, but their impacts were partially mitigated by landscape adjustments and policy interventions. Climate factor also significantly affected TP concentrations. Precipitation influenced surface runoff and pollutant generation, playing a key role in non-point source pollution and amplifying the positive impact of landscape sources on TP. Air temperature promoted the release of internal phosphorus by affecting water temperature, water body stratification, and dissolved oxygen concentrations. Wind speed could weaken the release of TP from landscape sources to water bodies. Future efforts should focus on optimizing landscape patterns, enhancing sink landscape aggregation, and strengthening environmental governance, while considering climate impacts in water quality management to ensure the sustainable development of the YRB.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104259"},"PeriodicalIF":6.7,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144068207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing rice productivity in wastewater-irrigated saline Cd-contaminated soils using microbial-nanoparticle synergy","authors":"Emad M. Hafez ,&nbsp;Yan Gao ,&nbsp;Honggui La ,&nbsp;Khadiga Alharbi ,&nbsp;Maha M. Hamada ,&nbsp;Alaa El-Dein Omara ,&nbsp;Tarek Alshaal","doi":"10.1016/j.eti.2025.104253","DOIUrl":"10.1016/j.eti.2025.104253","url":null,"abstract":"<div><div>Soil salinity and cadmium (Cd) contamination pose significant threats to agricultural productivity and food security, particularly in rice-growing regions. This study investigates the synergistic effects of plant growth-promoting rhizobacteria (PGPRs) (<em>Pseudomonas koreensis</em>, <em>Bacillus coagulans</em>, and <em>Pseudomonas stutzeri</em>) and selenium nanoparticles (SeNPs) in remediating saline Cd-contaminated soils and enhancing rice (<em>Oryza sativa</em> L.) performance. Over two consecutive growing seasons (2022–2023), the combined application of PGPRs and SeNPs significantly improved soil health, reducing soil pH from 8.50 to 8.02 and electrical conductivity (EC_e) from 5.97 to 4.01 dS m⁻¹ , while increasing soil organic matter (SOM) by 6.5 % and cation exchange capacity (CEC) by 25.6 %. The treatment also reduced soil Cd content by 34.6 %, from 0.81 to 0.53 mg kg⁻¹ , and decreased Cd accumulation in rice roots, shoots, and seeds by 56.7 %, 65.0 %, and 50.0 %, respectively, ensuring safer rice grain production. Furthermore, SeNPs significantly enhanced selenium (Se) content in rice shoots and seeds, with Se levels increasing from 0.55 to 1.47 µg g⁻¹ in shoots and from 0.01 to 0.51 µg g⁻¹ in seeds, highlighting their role in improving rice nutritional quality. Physiological analyses revealed enhanced photosynthetic pigment concentrations, with chlorophyll a increasing by 112.3 % and carotenoids by 213.6 %, alongside a 101.9 % increase in superoxide dismutase (SOD) activity under the combined treatment. These improvements translated into a 25.0 % increase in grain yield, from 5.76 to 7.24 ton ha⁻¹ , and a 21.4 % increase in 1000-grain weight. The findings highlight the efficacy of PGPRs and SeNPs in mitigating oxidative stress, improving nutrient uptake, reducing Cd toxicity, and enhancing rice productivity under combined salinity and Cd stress. This study provides a novel, eco-friendly strategy for sustainable soil remediation and crop production in contaminated environments, offering significant implications for global food security and agricultural sustainability.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104253"},"PeriodicalIF":6.7,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144070556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of temperature, pH and reaction time on alkali-thermal pretreatment of poly(3-hydroxybutyrate): Enhancing solubilization and anaerobic CH4 production","authors":"Minjae Kim ,&nbsp;Minsu Song ,&nbsp;Trang Thi Nhu Le ,&nbsp;Chaeyoung Rhee ,&nbsp;Mi Na Rhie ,&nbsp;Seung Gu Shin ,&nbsp;Joonyeob Lee","doi":"10.1016/j.eti.2025.104261","DOIUrl":"10.1016/j.eti.2025.104261","url":null,"abstract":"<div><div>The effects of alkali-thermal pretreatment with operational parameters (temperature: 37–91 °C, pH: 7–13, pretreatment time: 24–120 hr) on the solubilization and the consecutive anaerobic digestion of poly(3-hydroxybutyrate), P3HB, was investigated using the tests with 3²×4 full factorial design. Near-complete solubilization of P3HB (99.6 %) was attained through the alkali-thermal pretreatment. Alkali-thermal pretreatment of P3HB significantly improved CH₄ production, resulting in 23-fold enhancement in the CH₄ production rate (73 mL CH₄/g VSS/d) and an 88 % reduction in elapsed batch time for complete anaerobic digestion, with a CH₄ yield of 380 mL CH₄/g COD. Pretreatment factors, particularly pH, exerted significant effects and showed synergistic effects with temperature. This study integrated factorial design, response surface modeling, and microbial analysis to offer a comprehensive understanding of how pretreatment conditions affected both performance and microbial dynamics in P3HB anaerobic digestion. Response surface analysis with partial cubic models successfully quantified these relationships, and strong positive correlations between solubilization and CH₄ yield were observed. Distinct bacteria and archaea communities proliferated during the anaerobic digestion of pretreated versus unpretreated P3HB. Spirochaetaceae, <em>Syntrophomonas</em>, <em>Mesotoga</em>, Christensenellaceae R-7 group, and <em>Sedimentibacter</em>, along with methanogens such as <em>Methanosaeta</em> and <em>candidatus Methanofastidiosum</em>, were identified as key contributors to the anaerobic digestion of P3HB. These findings support that optimized alkali-thermal pretreatment significantly enhances the anaerobic digestion of P3HB, underscoring the potential of P3HB wastes as prospective feedstocks for anaerobic digestion process.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104261"},"PeriodicalIF":6.7,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143949124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced degradation of the UV filter phenylbenzimidazole sulfonic acid in water via UV-activated percarbonate","authors":"Webber Wei-Po Lai ,&nbsp;Yu-Wei Ding ,&nbsp;Yi-Chia Chien ,&nbsp;Szu-Wei Hsiao ,&nbsp;Yan-Zi Liao","doi":"10.1016/j.eti.2025.104257","DOIUrl":"10.1016/j.eti.2025.104257","url":null,"abstract":"<div><div>The emergence of UV filters in aquatic environments is a significant environmental concern because of their persistent nature and potential toxicity to ecosystems. However, an efficient treatment for eliminating UV filters from water has yet to be discovered. In this study, a UV-activated sodium percarbonate (UV/SPC) process was explored for the degradation of a commonly used UV filter: phenylbenzimidazole sulfonic acid (PBSA). Owing to the synergistic effect in the UV/SPC process, PBSA was completely removed from the water within 15 minutes. On the basis of the results from the EPR and probe experiments, the reactive species •OH, CO₃•^–, O₂•^–, and ¹O₂ were involved in PBSA degradation. During the UV/SPC reaction, PBSA underwent several main pathways, including i) hydroxylation, ii) oxidation, iii) imidazoline ring cleavage, iv) desulfonation, and v) benzene ring cleavage, further transforming into byproducts. Moreover, no obvious Microtox® toxicity was observed after UV/SPC treatment. The crucial parameters that affected PBSA degradation were the solution pH, SPC concentration and initial PBSA concentration. In addition, the pseudo-first-order rate constant (k_obs) decreased as the pH and PBSA concentration increased, whereas it increased with increasing SPC concentration. Additionally, in real water systems, PBSA was completely removed within 50 minutes by UV/SPC. In this work, comprehensive data on the mechanism of PBSA degradation and a promising treatment method for removing PBSA from water were provided.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104257"},"PeriodicalIF":6.7,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144070726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efficiency of tropical plants and smart green wall on reduction of fine particulate matters (PM2.5 and PM0.3–1.1) in a closed-system chamber","authors":"Janjira Muenrew ,&nbsp;Sarayut Rakarcha ,&nbsp;Anchalee nuammee ,&nbsp;Prateep Panyadee ,&nbsp;Wittaya Tala ,&nbsp;Nuttipon Yabueng ,&nbsp;Somporn Chantara","doi":"10.1016/j.eti.2025.104268","DOIUrl":"10.1016/j.eti.2025.104268","url":null,"abstract":"<div><div>This study investigates the effectiveness of plant species in reducing ambient fine particulate matter (PM). Among 10 tested species in a closed-system chamber, <em>Spathiphyllum cannifolium</em> achieved the highest PM_2.5 reduction (26 %), followed by <em>Nephrolepis cordifolia</em> (22 %) and <em>Tabernaemontana divaricata</em> (17 %). The superior performance of <em>S. cannifolium</em> is likely attributed to its morphological features, including a grooved leaf surface, large leaf area, and stomata on both leaf sides. A smart green wall combining these 10 plant species was evaluated for its efficiency in reducing PM_2.5 and size-fractionated PMs (PM_0.3–9.0) in a 64-m³ chamber filled with particulate matter generated from forest leaf burning. Initial PM_2.5 concentrations in the chamber were approximately 300 µg/m³ . A room with smart green walls and an empty room (control) were the two situations investigated. The temperature ranged from 26.5°C to 28.5°C, relative humidity from 39.5 % to 40.5 %, and light intensity ranged from 2620 to 2650 lux. The results showed that, PM_2.5 concentrations in empty rooms or controlled condition without smart green walls were reduced from 300 µg/m³ to 121 µg/m³ within one hour. The smart green wall reduced PM_2.5 from 300 µg/m³ to 89 µg/m³ within one hour. In the initial stage of dry leaf burning, the aerosol concentration peaked at nearly 200,000 particles/cm³ , with fine particles (PM_0.3–0.65) accounting for the majority. The Smart Green Wall reduced fine particles by 39–41 % of the total count. While this suggests some potential for PM reduction in micro-scale urban settings, real-world effectiveness would depend on environmental conditions.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104268"},"PeriodicalIF":6.7,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144084253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}