Environmental Technology & Innovation最新文献

Green synthesis and characterization of Ag/CuO nanoparticles: Exploring their antifungal, antimicrobial, and cytotoxic properties

IF 6.7 2区环境科学与生态学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Environmental Technology & Innovation

Pub Date : 2025-03-13 DOI: 10.1016/j.eti.2025.104147

Mohammad Javad Javid-Naderi , Zahra Sabouri , Amin Jalili , Hossein Zarrinfar , Shirin Sammak , Majid Darroudi

The global crisis of antibiotic resistance requires the creation of alternative therapeutics. Metal oxide nanoparticles are considered a novel class of biologically active materials. This study investigated the antimicrobial and anticancer effects of copper oxide nanoparticles (CuO-NPs) and their doped form with silver, which were synthesized using okra fruit extract. The X-ray diffraction (XRD) spectrum indicated that all NPs had a monoclinic structure, and the crystal size of the NPs increased with doping. The spectrum obtained from ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis/DRS) analysis of NPs exhibited an absorption band at a wavelength of 365 nm. The formation of CuO-NPs, with an average size of 57 nm, was confirmed by the field emission scanning electron microscopy (FESEM) analysis. Due to doping with Ag, the size of the NPs increased. The morphology of the pure CuO-NPs, as observed in the FESEM micrographs, appeared to be spherical with good dispersion. The CuO-NPs doped with Ag displayed rectangular and rod-like morphologies. The CuO-NPs doped with Ag exhibited the highest level of inhibition against both bacterial and fungal isolates. The P. aeruginosa displayed the highest sensitivity with an inhibition zone of 23 mm among bacterial isolates. Among the fungal isolates, Candida and Rhizopus exhibited inhibition at lower concentrations and demonstrated heightened sensitivity compared to the Aspergillus species. The study investigated cytotoxicity using the MTT method on HeLa cancer cells. It showed that increasing NPs concentration decreased cell viability, indicating dose-dependent cytotoxicity.

全球抗生素耐药性危机要求创造替代疗法。金属氧化物纳米粒子被认为是一类新型生物活性材料。本研究利用秋葵果实提取物合成了氧化铜纳米粒子（CuO-NPs）及其掺银纳米粒子，研究了它们的抗菌和抗癌效果。X 射线衍射（XRD）光谱表明，所有纳米粒子均为单斜结构，且晶体尺寸随掺杂量的增加而增大。通过紫外-可见漫反射光谱（UV-Vis/DRS）分析获得的光谱显示出波长为 365 纳米的吸收带。场发射扫描电子显微镜（FESEM）分析证实了平均尺寸为 57 nm 的 CuO-NPs 的形成。由于掺杂了 Ag，NPs 的尺寸增大了。从场发射扫描电子显微镜显微照片中观察到，纯 CuO-NPs 的形态呈球形，分散性良好。掺杂了Ag的CuO-NPs呈现矩形和棒状形态。掺银的 CuO-NPs 对细菌和真菌分离物的抑制作用最强。在细菌分离物中，铜绿假单胞菌显示出最高的灵敏度，抑制区达 23 毫米。在真菌分离物中，白色念珠菌和根霉菌的抑制浓度较低，与曲霉菌相比具有更高的敏感性。研究采用 MTT 法对 HeLa 癌细胞的细胞毒性进行了调查。结果表明，增加 NPs 浓度会降低细胞存活率，这表明细胞毒性具有剂量依赖性。

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引用次数: 0

Effects of straw returning after anaerobic microbial pretreatment on soil carbon sequestration and emission reduction

IF 6.7 2区环境科学与生态学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Environmental Technology & Innovation

Pub Date : 2025-03-11 DOI: 10.1016/j.eti.2025.104124

Li’e Wei , Kailun Song , YanYan Qi , Shipeng Sun , Guorong Ni , Chunhuo Zhou , Xin Yin

Soil carbon sequestration benefits are critical for agricultural development, and irrational agricultural waste disposal practices can lead to significant carbon emissions. Returning straw is known to enhance soil organic carbon, making strategies to accelerate straw degradation highly valuable for agricultural carbon sequestration. Anaerobes have demonstrated strong capabilities in accelerating lignocellulose degradation. However, the influence of straw on the transformation process of carbon, and the priming effect of soil carbon, needs to be further explored. This study utilized rumen microorganisms with mainly anaerobes for straw pretreatment, and employed isotope tracer method to simulate carbon transformation after straw returning. The pretreatment of ¹³C-labelled straw with RMs for 6 hours significantly increased its decomposition rate by 79.37 %. While the cumulative CH₄ emission flux rose, along with an increase in the abundance of methanogen-associated mcrA genes, the total soil carbon content increased by 61.79 % over a 60-day experimental period. Enzyme activities in the soil increased significantly, facilitating lignocellulose breakdown. Canonical correspondence analysis indicated that CH₄ emissions were attributed to increased abundance of the anaerobes, while increased CO₂ emissions were associated with soil carbon sequestration. Meanwhile, the Proteobacteria is involved in soil carbon sequestration and CO₂ production. These results suggest that anaerobic microorganisms exhibit high efficiency in accelerating straw degradation rates and enhancing soil carbon content following a 6-hour pretreatment of straw. The capacity of anaerobic microorganisms to convert solid waste has been shown, and highlights their robust potential for agricultural waste management and carbon sequestration.

{"title":"Effects of straw returning after anaerobic microbial pretreatment on soil carbon sequestration and emission reduction","authors":"Li’e Wei , Kailun Song , YanYan Qi , Shipeng Sun , Guorong Ni , Chunhuo Zhou , Xin Yin","doi":"10.1016/j.eti.2025.104124","DOIUrl":"10.1016/j.eti.2025.104124","url":null,"abstract":"<div><div>Soil carbon sequestration benefits are critical for agricultural development, and irrational agricultural waste disposal practices can lead to significant carbon emissions. Returning straw is known to enhance soil organic carbon, making strategies to accelerate straw degradation highly valuable for agricultural carbon sequestration. Anaerobes have demonstrated strong capabilities in accelerating lignocellulose degradation. However, the influence of straw on the transformation process of carbon, and the priming effect of soil carbon, needs to be further explored. This study utilized rumen microorganisms with mainly anaerobes for straw pretreatment, and employed isotope tracer method to simulate carbon transformation after straw returning. The pretreatment of <sup>13</sup>C-labelled straw with RMs for 6 hours significantly increased its decomposition rate by 79.37 %. While the cumulative CH<sub>4</sub> emission flux rose, along with an increase in the abundance of methanogen-associated mcrA genes, the total soil carbon content increased by 61.79 % over a 60-day experimental period. Enzyme activities in the soil increased significantly, facilitating lignocellulose breakdown. Canonical correspondence analysis indicated that CH<sub>4</sub> emissions were attributed to increased abundance of the anaerobes, while increased CO<sub>2</sub> emissions were associated with soil carbon sequestration. Meanwhile, the <em>Proteobacteria</em> is involved in soil carbon sequestration and CO<sub>2</sub> production. These results suggest that anaerobic microorganisms exhibit high efficiency in accelerating straw degradation rates and enhancing soil carbon content following a 6-hour pretreatment of straw. The capacity of anaerobic microorganisms to convert solid waste has been shown, and highlights their robust potential for agricultural waste management and carbon sequestration.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104124"},"PeriodicalIF":6.7,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143609309","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}

引用次数: 0

Pedogenesis of coal gangue heaps in high-altitude plateau areas driven by the in-situ formation of layered double hydroxides

IF 6.7 2区环境科学与生态学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Environmental Technology & Innovation

Pub Date : 2025-03-11 DOI: 10.1016/j.eti.2025.104145

Wenqing Ma , Shuteng Diao , Chen Li , Yiping Wang , Xuhui Zhao , Changhui Li , Zenghe Li , Fazhi Zhang , Xiaodong Lei

Although soil pedogenesis has advanced for low-altitude coal gangue piles, current technologies remain unstable and costly in high-altitude, cold mining areas. This study presents an innovative technique employing CaSO₄·2 H₂O and MgSO₄·7 H₂O as mineralizers to accelerate the chemical weathering of coal gangue through the in-situ formation of layered double hydroxides (LDHs), thereby stimulating in-situ pedogenesis to restore the mining areas. The introduced mineralizers interacted with dissolved Al^3 + and Fe³⁺ ions in the coal gangue, forming nano- and micro-scale LDHs with super-stable mineralized structures (K_sp<10⁻⁵⁰), disrupting the original equilibrium of coal gangue, as confirmed by structural characterization and density functional theory (DFT) calculations. Three years of large-scale improvement demonstrated successful pedogenesis with a 10 cm-thick upper soil layer, and the emergence rate of Festuca sinensis, Poa crymophila, Poa pratensis, and Elymus nutans increased from nearly 0.0–93.7 %, showing unprecedented stability under harsh environmental conditions, and significantly reducing costs (approximately $900/year). The leaching concentrations of trace elements were below the limits specified by both the Chinese national standard GB 5749–2022 and the U.S. Environmental Protection Agency (EPA) guidelines, confirming the environmental safety of the technology. This innovative approach offers a significant breakthrough in the remediation of coal gangue heaps in high-altitude mining areas.

{"title":"Pedogenesis of coal gangue heaps in high-altitude plateau areas driven by the in-situ formation of layered double hydroxides","authors":"Wenqing Ma , Shuteng Diao , Chen Li , Yiping Wang , Xuhui Zhao , Changhui Li , Zenghe Li , Fazhi Zhang , Xiaodong Lei","doi":"10.1016/j.eti.2025.104145","DOIUrl":"10.1016/j.eti.2025.104145","url":null,"abstract":"<div><div>Although soil pedogenesis has advanced for low-altitude coal gangue piles, current technologies remain unstable and costly in high-altitude, cold mining areas. This study presents an innovative technique employing CaSO<sub>4</sub>·2 H<sub>2</sub>O and MgSO<sub>4</sub>·7 H<sub>2</sub>O as mineralizers to accelerate the chemical weathering of coal gangue through the in-situ formation of layered double hydroxides (LDHs), thereby stimulating in-situ pedogenesis to restore the mining areas. The introduced mineralizers interacted with dissolved Al<sup>3 +</sup> and Fe<sup>3+</sup> ions in the coal gangue, forming nano- and micro-scale LDHs with super-stable mineralized structures (<em>K</em><sub>sp</sub><10<sup>−50</sup>), disrupting the original equilibrium of coal gangue, as confirmed by structural characterization and density functional theory (DFT) calculations. Three years of large-scale improvement demonstrated successful pedogenesis with a 10 cm-thick upper soil layer, and the emergence rate of <em>Festuca sinensis</em>, <em>Poa crymophila</em>, <em>Poa pratensis</em>, and <em>Elymus nutans</em> increased from nearly 0.0–93.7 %, showing unprecedented stability under harsh environmental conditions, and significantly reducing costs (approximately $900/year). The leaching concentrations of trace elements were below the limits specified by both the Chinese national standard GB 5749–2022 and the U.S. Environmental Protection Agency (EPA) guidelines, confirming the environmental safety of the technology. This innovative approach offers a significant breakthrough in the remediation of coal gangue heaps in high-altitude mining areas.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104145"},"PeriodicalIF":6.7,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143609347","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}

引用次数: 0

A review of recent advances in health risks and detection of 129I and 131I in environmental and biological samples

IF 6.7 2区环境科学与生态学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Environmental Technology & Innovation

Pub Date : 2025-03-11 DOI: 10.1016/j.eti.2025.104146

Hong Ren , Yihang Li , Lei Xu , Peng Wang , Yiyao Cao

Iodine radionuclides are released into the environment during an accident at a nuclear power plant or production facility. Iodine radionuclides exhibit high mobility in the environment due to their physicochemical properties such as volatility, good solubility, and chemical stability.¹²⁹I and ¹³¹I are two of the most important nuclides, which can pose serious health risks to the environment and the human body. Researchers worldwide have conducted numerous detections of ¹²⁹I and ¹³¹I in the environment and organisms for nearly two decades. Herein, we overviewed the latest advances in health risks and detection methods of ¹²⁹I and ¹³¹I in environmental and biological samples, including sample pretreatment, purification, and detection methods. The advantages and disadvantages of several pretreatment and detection methods are comprehensively compared, and the future development directions of ¹²⁹I and ¹³¹I detection technologies are prospected, including the development of simpler and more efficient sample processing methods, improvement of detection sensitivity and accuracy, and exploration of emerging detection technologies. Importantly, we hope to provide a reference for detecting ¹²⁹I and ¹³¹I.

{"title":"A review of recent advances in health risks and detection of 129I and 131I in environmental and biological samples","authors":"Hong Ren , Yihang Li , Lei Xu , Peng Wang , Yiyao Cao","doi":"10.1016/j.eti.2025.104146","DOIUrl":"10.1016/j.eti.2025.104146","url":null,"abstract":"<div><div>Iodine radionuclides are released into the environment during an accident at a nuclear power plant or production facility. Iodine radionuclides exhibit high mobility in the environment due to their physicochemical properties such as volatility, good solubility, and chemical stability.<sup>129</sup>I and <sup>131</sup>I are two of the most important nuclides, which can pose serious health risks to the environment and the human body. Researchers worldwide have conducted numerous detections of <sup>129</sup>I and <sup>131</sup>I in the environment and organisms for nearly two decades. Herein, we overviewed the latest advances in health risks and detection methods of <sup>129</sup>I and <sup>131</sup>I in environmental and biological samples, including sample pretreatment, purification, and detection methods. The advantages and disadvantages of several pretreatment and detection methods are comprehensively compared, and the future development directions of <sup>129</sup>I and <sup>131</sup>I detection technologies are prospected, including the development of simpler and more efficient sample processing methods, improvement of detection sensitivity and accuracy, and exploration of emerging detection technologies. Importantly, we hope to provide a reference for detecting <sup>129</sup>I and <sup>131</sup>I.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104146"},"PeriodicalIF":6.7,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143609139","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}

引用次数: 0

Exploration on the mechanism of Cr(VI) bioreduction by a novel cold and salt tolerant bacteria Algoriphagus sp. CM16 isolated from marine sediment

IF 6.7 2区环境科学与生态学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Environmental Technology & Innovation

Pub Date : 2025-03-08 DOI: 10.1016/j.eti.2025.104089

WenZhao Li , Meng Wang , Dong Xiao , Yuzhong Zhang , YiDan Chen , TingTing Tang , ZhaoLi Li , YuPing Dai , BaiLu Tang , HaiLun He

Hexavalent chromium pollution, a hazardous heavy metal contamination, poses grave risks to human health, finding environmentally friendly ways to treat hexavalent chromium has become an urgent scientific problem. In this study, a novel marine hexavalent chromium-reducing strain, Algoriphagus sp. CM16 was discovered, the first report of a chromium-reducing bacterium of the genus Algoriphagus. CM16 exhibits exceptional reduction capacity at lower temperature (25°C) and higher salinity (3 %), removing 85.3 % of 50 mg/L chromium within 48 h, unaffected by heavy metal ions and anions (NO₃²⁻, SO₄²⁻). Utilizing diverse carbon source and electron mediators, CM16 significantly accelerates Cr(VI) removal. Strain CM16 mainly reduces Cr(VI) to trivalent chromium in the cytoplasm and cell envelope and forming an amorphous precipitate while producing massive Catalase(CAT) and Superoxide Dismutase(SOD) to effectively protect the cells from oxidative damage caused by Reactive Oxygen Species(ROS) during the reduction process. Furthermore, the whole-genome sequencing analysis suggested that CM16's robust chromium reduction capabilities and elevated levels of antioxidant enzymes may stem from a long-term adaptation strategy to harsh polar environments. Due to high chromium reduction efficiency, high salt tolerance properties, and high content of antioxidant enzymes, Algoriphagus sp. CM16 is predicted to be used for bioremediation of metal-contaminated and high-salt environments.

{"title":"Exploration on the mechanism of Cr(VI) bioreduction by a novel cold and salt tolerant bacteria Algoriphagus sp. CM16 isolated from marine sediment","authors":"WenZhao Li , Meng Wang , Dong Xiao , Yuzhong Zhang , YiDan Chen , TingTing Tang , ZhaoLi Li , YuPing Dai , BaiLu Tang , HaiLun He","doi":"10.1016/j.eti.2025.104089","DOIUrl":"10.1016/j.eti.2025.104089","url":null,"abstract":"<div><div>Hexavalent chromium pollution, a hazardous heavy metal contamination, poses grave risks to human health, finding environmentally friendly ways to treat hexavalent chromium has become an urgent scientific problem. In this study, a novel marine hexavalent chromium-reducing strain, <em>Algoriphagus</em> sp. CM16 was discovered, the first report of a chromium-reducing bacterium of the genus <em>Algoriphagus</em>. CM16 exhibits exceptional reduction capacity at lower temperature (25°C) and higher salinity (3 %), removing 85.3 % of 50 mg/L chromium within 48 h, unaffected by heavy metal ions and anions (NO<sub>3</sub>²⁻, SO<sub>4</sub>²⁻). Utilizing diverse carbon source and electron mediators, CM16 significantly accelerates Cr(VI) removal. Strain CM16 mainly reduces Cr(VI) to trivalent chromium in the cytoplasm and cell envelope and forming an amorphous precipitate while producing massive Catalase(CAT) and Superoxide Dismutase(SOD) to effectively protect the cells from oxidative damage caused by Reactive Oxygen Species(ROS) during the reduction process. Furthermore, the whole-genome sequencing analysis suggested that CM16's robust chromium reduction capabilities and elevated levels of antioxidant enzymes may stem from a long-term adaptation strategy to harsh polar environments. Due to high chromium reduction efficiency, high salt tolerance properties, and high content of antioxidant enzymes, <em>Algoriphagus</em> sp. CM16 is predicted to be used for bioremediation of metal-contaminated and high-salt environments.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104089"},"PeriodicalIF":6.7,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143620750","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}

引用次数: 0

Recycling corn stalks as an effective biosorbent for heavy metal removal from wastewater: Investigation on the adsorption performance and mechanism

IF 6.7 2区环境科学与生态学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Environmental Technology & Innovation

Pub Date : 2025-03-08 DOI: 10.1016/j.eti.2025.104140

Dezhi Zhao , Haiping Chen , Qingxin Zhao , Wenyue Qi , Yuan Liu , Yuyang Tian

DETA-functionalized corn stalk cellulose (DCC) biosorbent was successfully prepared from corn stalks and applied to simultaneously remove Cu^2 +, Pb²⁺ and Zn²⁺ from wastewater. Compared with raw corn stalk cellulose, DCC was rich in amino groups and was characterized with larger specific surface area as well as higher chemical polarity. Batch experiments were carried out to optimize the adsorption parameters including the pH value, contact time and initial concentration. The adsorption data followed the pseudo-second-order kinetics model and Langmuir isotherm model better, and the adsorption amount for Cu²⁺, Pb²⁺ and Zn²⁺ in ternary system were 59.10, 68.92 and 60.79 mg/g, respectively. FT-IR and XPS results revealed that the O-containing and N-containing groups on DCC surface played a prominent role in heavy metal adsorption by forming chelating complex with multiligand. Additionally, the DCC biosorbent presented good regeneration performance after 5 cycles. The findings in this paper revealed the DCC biosorbent had promising efficiency in heavy metal removal from effluents, and also offered an alternative strategy to recycle corn stalks for the purpose of ‘waste treatment by waste’.

{"title":"Recycling corn stalks as an effective biosorbent for heavy metal removal from wastewater: Investigation on the adsorption performance and mechanism","authors":"Dezhi Zhao , Haiping Chen , Qingxin Zhao , Wenyue Qi , Yuan Liu , Yuyang Tian","doi":"10.1016/j.eti.2025.104140","DOIUrl":"10.1016/j.eti.2025.104140","url":null,"abstract":"<div><div>DETA-functionalized corn stalk cellulose (DCC) biosorbent was successfully prepared from corn stalks and applied to simultaneously remove Cu<sup>2 +</sup>, Pb<sup>2+</sup> and Zn<sup>2+</sup> from wastewater. Compared with raw corn stalk cellulose, DCC was rich in amino groups and was characterized with larger specific surface area as well as higher chemical polarity. Batch experiments were carried out to optimize the adsorption parameters including the pH value, contact time and initial concentration. The adsorption data followed the pseudo-second-order kinetics model and Langmuir isotherm model better, and the adsorption amount for Cu<sup>2+</sup>, Pb<sup>2+</sup> and Zn<sup>2+</sup> in ternary system were 59.10, 68.92 and 60.79 mg/g, respectively. FT-IR and XPS results revealed that the O-containing and N-containing groups on DCC surface played a prominent role in heavy metal adsorption by forming chelating complex with multiligand. Additionally, the DCC biosorbent presented good regeneration performance after 5 cycles. The findings in this paper revealed the DCC biosorbent had promising efficiency in heavy metal removal from effluents, and also offered an alternative strategy to recycle corn stalks for the purpose of ‘waste treatment by waste’.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104140"},"PeriodicalIF":6.7,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143594048","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}

引用次数: 0

The impact of mining on the ecosystem of central Iran's Wetland: A probabilistic approach to assessing ecological risk

IF 6.7 2区环境科学与生态学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Environmental Technology & Innovation

Pub Date : 2025-03-08 DOI: 10.1016/j.eti.2025.104131

Amin Mohammadpour , Fariba Abbasi , Ebrahim Shahsavani , Azadeh Kazemi

Wetlands are essential for sustaining ecological stability and ecosystem equilibrium. This study investigated soil pollution and ecological risks in Iran's Meighan wetland, focusing on the impact of nearby sodium sulfate mining. The enrichment factor, geo-accumulation index, and potential ecological risk index of elements were evaluated using both deterministic and probabilistic approaches. The findings revealed some potentially toxic elements levels in ore waste exceeded those in raw materials, and the wetland acted as a receptor for toxic elements. Additionally, rare earth elements such as yttrium, ytterbium, cerium, scandium, and lanthanum were detected in wetland samples. Analysis revealed that cobalt (in some waste ore samples), selenium (downstream), and vanadium (in some wetland samples) exceeded permissible limits. Deterministic risk assessments showed extremely high pollution indices for vanadium (enrichment factor = 85.77, Geo-accumulation Index, Igeo= 11.37) and titanium (EF= 5.39), indicating significant anthropogenic impacts. Monte Carlo simulations suggested that the Igeo values revealed a significant rise in contamination levels, with arsenic (52.83 %) and barium (31.59 %) indicating moderately to heavy polluted. Meanwhile, vanadium (97.21 %), aluminum (96.91 %), lead (84.69 %), chromium (25.33 %), nickel (25.17 %), cobalt (23.32 %), and manganese (13.36 %) were classified as extremely polluted. The aluminum, lead, and titanium exhibited very high enrichment, with levels at 0.3 %, 0.4 %, and 0.2 %, respectively. The potential ecological risk index classified 63.53 % of samples as 'Very High' risk, with nickel and chromium being the most significant contributors. Hence, this mine posed a substantial ecological risk to Meighan Wetland, requiring rehabilitation efforts to address anthropogenic and geogenic factors.

{"title":"The impact of mining on the ecosystem of central Iran's Wetland: A probabilistic approach to assessing ecological risk","authors":"Amin Mohammadpour , Fariba Abbasi , Ebrahim Shahsavani , Azadeh Kazemi","doi":"10.1016/j.eti.2025.104131","DOIUrl":"10.1016/j.eti.2025.104131","url":null,"abstract":"<div><div>Wetlands are essential for sustaining ecological stability and ecosystem equilibrium. This study investigated soil pollution and ecological risks in Iran's Meighan wetland, focusing on the impact of nearby sodium sulfate mining. The enrichment factor, geo-accumulation index, and potential ecological risk index of elements were evaluated using both deterministic and probabilistic approaches. The findings revealed some potentially toxic elements levels in ore waste exceeded those in raw materials, and the wetland acted as a receptor for toxic elements. Additionally, rare earth elements such as yttrium, ytterbium, cerium, scandium, and lanthanum were detected in wetland samples. Analysis revealed that cobalt (in some waste ore samples), selenium (downstream), and vanadium (in some wetland samples) exceeded permissible limits. Deterministic risk assessments showed extremely high pollution indices for vanadium (enrichment factor = 85.77, Geo-accumulation Index, Igeo= 11.37) and titanium (EF= 5.39), indicating significant anthropogenic impacts. Monte Carlo simulations suggested that the Igeo values revealed a significant rise in contamination levels, with arsenic (52.83 %) and barium (31.59 %) indicating moderately to heavy polluted. Meanwhile, vanadium (97.21 %), aluminum (96.91 %), lead (84.69 %), chromium (25.33 %), nickel (25.17 %), cobalt (23.32 %), and manganese (13.36 %) were classified as extremely polluted. The aluminum, lead, and titanium exhibited very high enrichment, with levels at 0.3 %, 0.4 %, and 0.2 %, respectively. The potential ecological risk index classified 63.53 % of samples as 'Very High' risk, with nickel and chromium being the most significant contributors. Hence, this mine posed a substantial ecological risk to Meighan Wetland, requiring rehabilitation efforts to address anthropogenic and geogenic factors.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104131"},"PeriodicalIF":6.7,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143631909","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}

引用次数: 0

An integrated three-crop rotation of oilseed rape−rice−rice enables the safe utilization and sustainable remediation of Cd-contaminated farmland

IF 6.7 2区环境科学与生态学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Environmental Technology & Innovation

Pub Date : 2025-03-08 DOI: 10.1016/j.eti.2025.104123

Liang Wang , Qiqing Liu , Fenghua Zhao , Jun Yang , JingYi Fu , Xiaoyong Liao

A sustainable strategy for cadmium (Cd)-contaminated farmland was developed using a rape−rice−rice rotation system. This method combines early maturing and high Cd-accumulating rape variety with low Cd-accumulating rice varieties and alkaline Si-rich fertilizer. Field experiments compared different planting patterns: single-season rice (SR), oilseed rape−rice rotation (OR), rice-rice rotation (RR), modified oilseed rape-rice rotation (MOR), and integrated three-crop rotation (MORR). MORR significantly reduced Cd content in rice grains, boost total crop yield, and enhanced soil Cd removal. It achieved a comprehensive evaluation index of 0.99, safe crop production over three seasons, a soil Cd removal rate of 87.338 g/ha/yr, and economic benefits of 34,915 CNY·ha⁻¹. Simulations based on the Cd input-output balance showed MORR cleaned soil Cd below standards in 12 years, outperforming the 15 years required by the Sedum alfredii and peanut rotation (SP). MORR minimized health risks from Cd exposure, balancing safe production, soil remediation, and farmer income, offering a viable solution for sustainable use of Cd-contaminated farmland.

{"title":"An integrated three-crop rotation of oilseed rape−rice−rice enables the safe utilization and sustainable remediation of Cd-contaminated farmland","authors":"Liang Wang , Qiqing Liu , Fenghua Zhao , Jun Yang , JingYi Fu , Xiaoyong Liao","doi":"10.1016/j.eti.2025.104123","DOIUrl":"10.1016/j.eti.2025.104123","url":null,"abstract":"<div><div>A sustainable strategy for cadmium (Cd)-contaminated farmland was developed using a rape−rice−rice rotation system. This method combines early maturing and high Cd-accumulating rape variety with low Cd-accumulating rice varieties and alkaline Si-rich fertilizer. Field experiments compared different planting patterns: single-season rice (SR), oilseed rape−rice rotation (OR), rice-rice rotation (RR), modified oilseed rape-rice rotation (MOR), and integrated three-crop rotation (MORR). MORR significantly reduced Cd content in rice grains, boost total crop yield, and enhanced soil Cd removal. It achieved a comprehensive evaluation index of 0.99, safe crop production over three seasons, a soil Cd removal rate of 87.338 g/ha/yr, and economic benefits of 34,915 CNY·ha<sup>−1</sup>. Simulations based on the Cd input-output balance showed MORR cleaned soil Cd below standards in 12 years, outperforming the 15 years required by the <em>Sedum alfredii</em> and peanut rotation (SP). MORR minimized health risks from Cd exposure, balancing safe production, soil remediation, and farmer income, offering a viable solution for sustainable use of Cd-contaminated farmland.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104123"},"PeriodicalIF":6.7,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143594049","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}

引用次数: 0

Synergistic effects of biochar and abscisic acid improved root morphology, antioxidant defense system and decreased availability and bioaccumulation of cadmium in Triticum aestivum (L.) under cadmium stress

IF 6.7 2区环境科学与生态学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Environmental Technology & Innovation

Pub Date : 2025-03-07 DOI: 10.1016/j.eti.2025.104121

Feng Lin , Zaffar Malik , Nasir Masood , Muhammad Rizwan , Yousef Alhaj Hamoud , Hiba Shaghaleh , Sana Noreen , Jean Wan Hong Yong

Biochar (BC) and abscisic acid (ABA) may deliver positive physiological effects on heavy metal-stressed plants but their interactive role for regulating cadmium (Cd) availability in agricultural soils is unclear. This study revealed that the Cd-induced oxidative stress significantly reduced the growth of wheat, physiology and antioxidant responses. Interestingly, the co-application of BC (2.5 %) and ABA (20 μmol L⁻¹) restored the growth of wheat plants by minimizing Cd accumulation and translocation than their single use. The co-application of these amendments significantly increased the tissues biomass by 36 %, total root volume (29 %), root surface area (44 %), foliar Chl-a and Chl-b by 59 % and 55 % at 10 mg kg⁻¹ Cd than control. Elevated Cd levels increased the proline, MDA and H₂O₂ contents, while BC and ABA applications ameliorated the Cd-induced oxidative injury by boosting the enzymatic activities of catalase by 46 %, ascorbate-peroxidase by 46 % and peroxidase by 37 % at 10 mg kg⁻¹ Cd. The Cd treatment also increased Cd levels in soil, root and shoot tissues of wheat plants. The co-application BC and ABA reduced DTPA-extractable soil Cd by about 3-fold at 5 mg kg⁻¹ and by about 1.8-fold at 10 mg kg⁻¹, as compared to respective controls. The combined BC + ABA treatment reduced Cd biological accumulation by 35 % and 33 %; and Cd translocation by 21 % and 9 % at 5 and 10 mg kg⁻¹ Cd levels than control. It was concluded that the combined BC+ABA application restored the growth, physiology, antioxidant enzymatic activities and minimized Cd bioaccumulation in wheat tissues.

{"title":"Synergistic effects of biochar and abscisic acid improved root morphology, antioxidant defense system and decreased availability and bioaccumulation of cadmium in Triticum aestivum (L.) under cadmium stress","authors":"Feng Lin , Zaffar Malik , Nasir Masood , Muhammad Rizwan , Yousef Alhaj Hamoud , Hiba Shaghaleh , Sana Noreen , Jean Wan Hong Yong","doi":"10.1016/j.eti.2025.104121","DOIUrl":"10.1016/j.eti.2025.104121","url":null,"abstract":"<div><div>Biochar (BC) and abscisic acid (ABA) may deliver positive physiological effects on heavy metal-stressed plants but their interactive role for regulating cadmium (Cd) availability in agricultural soils is unclear. This study revealed that the Cd-induced oxidative stress significantly reduced the growth of wheat, physiology and antioxidant responses. Interestingly, the co-application of BC (2.5 %) and ABA (20 μmol L<sup>−1</sup>) restored the growth of wheat plants by minimizing Cd accumulation and translocation than their single use. The co-application of these amendments significantly increased the tissues biomass by 36 %, total root volume (29 %), root surface area (44 %), foliar Chl-a and Chl-b by 59 % and 55 % at 10 mg kg<sup>−1</sup> Cd than control. Elevated Cd levels increased the proline, MDA and H<sub>2</sub>O<sub>2</sub> contents, while BC and ABA applications ameliorated the Cd-induced oxidative injury by boosting the enzymatic activities of catalase by 46 %, ascorbate-peroxidase by 46 % and peroxidase by 37 % at 10 mg kg<sup>−1</sup> Cd. The Cd treatment also increased Cd levels in soil, root and shoot tissues of wheat plants. The co-application BC and ABA reduced DTPA-extractable soil Cd by about 3-fold at 5 mg kg<sup>−1</sup> and by about 1.8-fold at 10 mg kg<sup>−1</sup>, as compared to respective controls. The combined BC + ABA treatment reduced Cd biological accumulation by 35 % and 33 %; and Cd translocation by 21 % and 9 % at 5 and 10 mg kg<sup>−1</sup> Cd levels than control. It was concluded that the combined BC+ABA application restored the growth, physiology, antioxidant enzymatic activities and minimized Cd bioaccumulation in wheat tissues.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104121"},"PeriodicalIF":6.7,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143594056","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}

引用次数: 0

Using heteroatom in nitrogen-mediated pyrolysis to suppressed polycyclic aromatic hydrocarbon derived from cellulose and polyethylene waste

IF 6.7 2区环境科学与生态学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Environmental Technology & Innovation

Pub Date : 2025-03-06 DOI: 10.1016/j.eti.2025.104130

Cheng-Di Dong , Divyashakti Sureshchandra Gautam , Chiu-Wen Chen , Chang-Mao Hung

The conversion of waste plastic to biochar is an environmentally friendly and economically feasible approach to handle the current global crisis of plastic pollution. This study investigates the fabrication of biochar from cellulose and polyethylene plastics composites (CLPE) via co-pyrolysis under various temperatures ranging from 300 to 900 °C, focusing on hazard associations of pyrogenic-derived polycyclic aromatic hydrocarbons (PAHs). CLPE900, synthesized at 900 °C under N₂ as a carrier gas, exhibited a higher concentration of PAHs (15,849 ± 315 ng g^–1) than CLPE700 (2480 ± 56 ng g^–1) produced in a CO₂ atmosphere. Further, different heterogeneous atoms including B, N, NB, S, SB, and NS were used as dopants to reduce PAHs formation and improve CLPE co-pyrolysis. Specifically, by combining boron moieties with CLPE potentially suppressed the formation of PAHs, resulting in a 99.7 % removal performance. These findings reveal a promising avenue for mitigating the environmental impact of PAHs via heteroatom-assisted thermal chemical processing.

{"title":"Using heteroatom in nitrogen-mediated pyrolysis to suppressed polycyclic aromatic hydrocarbon derived from cellulose and polyethylene waste","authors":"Cheng-Di Dong , Divyashakti Sureshchandra Gautam , Chiu-Wen Chen , Chang-Mao Hung","doi":"10.1016/j.eti.2025.104130","DOIUrl":"10.1016/j.eti.2025.104130","url":null,"abstract":"<div><div>The conversion of waste plastic to biochar is an environmentally friendly and economically feasible approach to handle the current global crisis of plastic pollution. This study investigates the fabrication of biochar from cellulose and polyethylene plastics composites (CLPE) via co-pyrolysis under various temperatures ranging from 300 to 900 °C, focusing on hazard associations of pyrogenic-derived polycyclic aromatic hydrocarbons (PAHs). CLPE900, synthesized at 900 °C under N<sub>2</sub> as a carrier gas, exhibited a higher concentration of PAHs (15,849 ± 315 ng g<sup>–1</sup>) than CLPE700 (2480 ± 56 ng g<sup>–1</sup>) produced in a CO<sub>2</sub> atmosphere. Further, different heterogeneous atoms including B, N, NB, S, SB, and NS were used as dopants to reduce PAHs formation and improve CLPE co-pyrolysis. Specifically, by combining boron moieties with CLPE potentially suppressed the formation of PAHs, resulting in a 99.7 % removal performance. These findings reveal a promising avenue for mitigating the environmental impact of PAHs via heteroatom-assisted thermal chemical processing.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104130"},"PeriodicalIF":6.7,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143578432","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}

引用次数: 0