{"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}
Liang Wang , Qiqing Liu , Fenghua Zhao , Jun Yang , JingYi Fu , Xiaoyong Liao
{"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}
Feng Lin , Zaffar Malik , Nasir Masood , Muhammad Rizwan , Yousef Alhaj Hamoud , Hiba Shaghaleh , Sana Noreen , Jean Wan Hong Yong
{"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}
{"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}
Jie Yin, Jiani Wang, Lu Zhao, Zhongliang Cui, Sheng Yao, Guoxue Li, Jing Yuan
{"title":"Compost tea: Preparation, utilization mechanisms, and agricultural applications potential – A comprehensive review","authors":"Jie Yin, Jiani Wang, Lu Zhao, Zhongliang Cui, Sheng Yao, Guoxue Li, Jing Yuan","doi":"10.1016/j.eti.2025.104137","DOIUrl":"10.1016/j.eti.2025.104137","url":null,"abstract":"<div><div>Compost tea is a high-concentration organic liquid fertilizer produced by mixing matured compost with extraction liquid, followed by microbial decomposition and fermentation. Compost tea is rich in nutrients, organic matter, beneficial microorganisms, and their metabolic products. This review examines 2433 compost tea-related articles from the Web of Science (WoS) Core Collection from January 2000 to January 2024. It combines bibliometric analysis to introduce the fundamental concepts and development of compost tea, its characteristics, classification, and influencing factors, as well as its application and the mechanisms through which it affects crop growth and disease suppression. Compost tea can improve soil structure and properties, enhance crop growth, and suppress plant diseases. However, the effectiveness of compost tea is closely related to the parameters of its preparation technology. Animal-based compost tea generally demonstrates better disease suppression compared to plant-based compost tea. The compost-to-water ratio for preparing compost tea typically ranges from 1:1–1:50. Aerobic compost tea extraction usually takes 1–3 days, while non-aerobic compost tea requires about 7–14 days. Currently, compost tea application is limited, lacking standardized production processes and specialized functional fertilizers. The suitable crop varieties, application amounts, application methods, and efficacy for growth promotion and disease suppression of compost tea from different feedstocks are still unclear. Therefore, further research and optimization of compost tea preparation methods and application parameters are needed in the future. This paper integrates relevant studies to provide guidance and recommendations for the further promotion of compost tea application.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104137"},"PeriodicalIF":6.7,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143577610","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}
Fangying Dong , Huiyong Yin , Zhibing Yang , Wanfang Zhou , Wenju Cheng , Yongming Liu
{"title":"Delineating the controlling mechanisms of geothermal waters quality and suitability zoning in the Lower Yellow River Basin, China","authors":"Fangying Dong , Huiyong Yin , Zhibing Yang , Wanfang Zhou , Wenju Cheng , Yongming Liu","doi":"10.1016/j.eti.2025.104126","DOIUrl":"10.1016/j.eti.2025.104126","url":null,"abstract":"<div><div>In the context of global low-carbon development, the exploitation and utilization of geothermal waters has attracted widespread attention. Geothermal water quality evolution and associated risk assessment have important practical significance for ensuring safe water use and sustainable development. However, traditional geothermal water assessments do not take into account the uncertainties in the different types of use and water quality evolution. To overcome this limitation, this study analyze the hydrogeochemistry characteristics of geothermal waters, reveal its control mechanisms, assess suitability zoning and associated health risks through high-density sampling in the Lower Yellow River Basin (LYRB), Shandong Province. The results show that the physical and hydrogeochemistry characteristics of geothermal waters exhibit large spatial variation at different temperatures, and 93.7 % of samples meet the standard for physiotherapeutic use of geothermal waters in China. The geothermal water samples at 0–50 ℃ are mainly of SO<sub>4</sub>·Cl–Ca·Mg type, while the samples above 50 °C are mainly of SO<sub>4</sub>·Cl-Na type. The water temperatures have a strong positive correlation with TDS. The main recharge source of geothermal waters is atmospheric precipitation, and the hydrogeochemical characteristics are mainly controlled by the dissolution of salt rocks, silicates, sulfate minerals and cation exchange. The enrichment and spatial distribution of unconventional components are affected by the development degree of geothermal waters. The geothermal water quality index (<em>GWQI</em>) in Poor and Extremely poor areas range of 50 % in the LYRB, mainly affected by I<sup>-</sup> and Cl<sup>-</sup>. Finally, the suitability zoning of geothermal waters for different types of use is divided, and suggestions for scientific exploitation of geothermal waters is put forward. These results provide theoretical basis for the scientific management, suitability evaluation and health risk assessment of geothermal waters in geothermal waters enrichment areas.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104126"},"PeriodicalIF":6.7,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143594050","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}
Yu-Syuan Jhuo , Hui-Ee Wong , Hsin-Hsin Tung , Louis Ge
{"title":"Effectiveness of microbial induced carbonate precipitation treatment strategies for sand","authors":"Yu-Syuan Jhuo , Hui-Ee Wong , Hsin-Hsin Tung , Louis Ge","doi":"10.1016/j.eti.2025.104132","DOIUrl":"10.1016/j.eti.2025.104132","url":null,"abstract":"<div><div>Microbial induced carbonate precipitation (MICP) is a sustainable and environmentally protectable technique in geotechnical engineering. Treatment uniformity and convenience of application are crucial considerations in laboratory and field tests. This study focuses on the exploration of three treatment strategies using the surface percolation method. A rapid MICP process may lead to uneven distribution issues. By lowering the pH of the bacterial solution to delay the reaction time, the accumulation of calcium carbonate at the injection point can be minimized, thereby enhancing the treatment effectiveness. The results suggest that single-phase treatment under undrained conditions at the bottom of specimen, utilizing a lower pH bacterial solution, effectively improves the uniformity of the treatment. It was observed that flocculated calcium carbonate deposited and solidified over the curing time. The morphology of calcium carbonate under scanning electron microscopic (SEM) that forms as a bonding agent between sand particles displays the cubic crystalline structure characteristic of calcite, as reflected in the shear strength observed during triaxial consolidated drained (CD) tests.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104132"},"PeriodicalIF":6.7,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143578433","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}
Md Mizanur Rahman Manu , Qinyi Wang , Dan Li , Yangyue Sheng , Yili Zhang , Xinrun Zhong , Hao Wu , Zhengfeng Huang , Chao Zhang , Xiaoyong Qian , Kaipei Qiu
{"title":"Resolving the facility-specific increase of local greenhouse gas concentrations by an industrial wastewater treatment plant","authors":"Md Mizanur Rahman Manu , Qinyi Wang , Dan Li , Yangyue Sheng , Yili Zhang , Xinrun Zhong , Hao Wu , Zhengfeng Huang , Chao Zhang , Xiaoyong Qian , Kaipei Qiu","doi":"10.1016/j.eti.2025.104134","DOIUrl":"10.1016/j.eti.2025.104134","url":null,"abstract":"<div><div>Wastewater treatment plants (WWTPs) have been the fourth largest sector for global methane emissions and fifth for nitrous oxide, generating 2.2 % of the annual anthropogenic greenhouse gas (GHG) emissions. However, few studies have systematically examined the impact of an individual WWTP on the atmospheric GHG levels in surrounding areas, and in particular, the comprehensive analysis of facility-specific contribution is lacking. To address the research gap, this work performed AERMOD simulation with a 12-month GHG monitoring campaign at a full-scale industrial WWTP, covering all the 18 emission units in it. For the five populated towns in a 20 × 20 km area nearby, the increase of GHG concentration ranged from 13.0 to 83.2 ppb<sub>CO2-eq</sub> yr<sup>−1</sup>, which was 1.45 % of the global growth rate on average. A more detailed evaluation was conducted on Duct 1–5 and Ox A/B. It was found that these seven facilities produced 95.4 % of the total GHG emissions, but caused only 86.9 % of the concentration changes. Regardless of the type of GHGs, the ratios of concentration to emission were consistently lower than one for points sources, while higher than one for area sources. The model reliability was further validated through two additional months of continuous monitoring. These findings underscored the importance of incorporating facility-specific contributions on local GHG concentrations into the development of mitigation strategies for WWTP in future.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104134"},"PeriodicalIF":6.7,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143552842","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":"The role of humic substances’ hydrophobicity in heterogeneous adsorption onto microplastics: Insights from two-dimensional correlation hydrophilic interaction chromatography","authors":"Tae Jun Park, Rabia Zafar, Jin Hur","doi":"10.1016/j.eti.2025.104136","DOIUrl":"10.1016/j.eti.2025.104136","url":null,"abstract":"<div><div>The heterogeneous composition of humic substances (HS) complicates understanding their interactions with microplastics (MPs), which is critical for assessing the environmental roles of MPs in aquatic systems. This study investigated the adsorption behavior of HS onto pristine and aged polyethylene (PE) MPs, with a focus on how hydrophobic properties influence these interactions. Hydrophilic interaction chromatography (HILIC) revealed preferential adsorption of HS molecules with higher log K<sub>ow</sub> values onto MPs compared to those with lower values. This trend was more pronounced for aged MPs than pristine MPs and was stronger under acidic conditions. Two-dimensional correlation HILIC (2D-Co-HILIC) provided further insights, revealing sequential adsorption of HS subfractions based on hydrophobicity. For pristine MPs, Freundlich adsorption affinity (K<sub>F</sub>) values followed the log K<sub>ow</sub> order of 3.2 > 3.4 > 2.5, with corresponding K<sub>F</sub> values of 4.64 ± 0.12 > 0.71 ± 0.05 > 0.70 ± 0.08 (Abs/g)(Abs)<sup>1/n</sup>. For aged MPs, the order was 3.2 > 3.4 > 3.0 > 2.5, with K<sub>F</sub> values of 5.44 ± 0.07 > 5.02 ± 0.06 > 0.77 ± 0.07 > 0.23 ± 0.05. Hydrophobic interactions played a dominant role, particularly for aged MPs, where greater competition among HS molecules for adsorption sites occurred. Changes in the molecular weight of residual HS, inferred from fluorescence component ratios, indicated molecular size as a secondary factor in adsorption. This study highlights the critical role of hydrophobicity in HS-MP interactions and calls for further research into how these interactions impact the environmental behavior of HS and MPs in aquatic systems.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104136"},"PeriodicalIF":6.7,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143578429","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}
Chang Liu , Taotao Chen , Feng Zhang , Hongwei Han , Benji Yi , Jun Meng , Daocai Chi , Yong Sik Ok
{"title":"Engineered biochar effects on methane emissions and rice yield under alternate wetting and drying in paddy soils","authors":"Chang Liu , Taotao Chen , Feng Zhang , Hongwei Han , Benji Yi , Jun Meng , Daocai Chi , Yong Sik Ok","doi":"10.1016/j.eti.2025.104133","DOIUrl":"10.1016/j.eti.2025.104133","url":null,"abstract":"<div><div>Biochar is a promising strategy for improving crop yield and mitigating greenhouse gas emissions. However, the impacts of acid modified biochar on CH<sub>4</sub> emissions and yield in rice fields are not comprehensively understood, especially under alternate wetting and drying irrigation (I<sub>AWD</sub>). Here, we conducted a 3-yr (2019-2021) field experiment with two irrigation regimes (I<sub>CF</sub>: continuous flooding irrigation, I<sub>AWD</sub>) and three biochar treatments (B<sub>0</sub>: no biochar; B<sub>20</sub>: 20 t ha<sup>−1</sup> rice straw biochar; and B<sub>20A</sub>: 20 t ha<sup>−1</sup> acid modified rice straw biochar). Results showed I<sub>AWD</sub> reduced CH<sub>4</sub> emissions by 63–80 % and water consumption by 10–12 % but threatened the rice soil fertility. B<sub>20</sub> and B<sub>20A</sub> increased soil cation exchange capacity by 13–36 %, soil organic carbon by 24–44 % and C/N by 17–36 % over the three years. However, compared to B<sub>0</sub>, B<sub>20</sub> tended to increase CH<sub>4</sub> emissions and factor (CH<sub>4EF</sub>), reduced grain yield by 6 % in 2019, but B<sub>20A</sub> suppressed CH<sub>4</sub> emissions by 19 % while maintaining a stable grain yield. B<sub>20</sub> and B<sub>20A</sub> enhanced yield by 5 % and 8 %, 11 % and 12 % and decreased CH<sub>4</sub> emissions by 22 % and 38 %, 38 % and 40 % in 2020 and 2021, respectively. B<sub>20A</sub> alleviated its initial negative impact on CH<sub>4</sub> emissions and yield in 2019 due to acid modified biochar enhancing more acidic and oxygenated functional groups. I<sub>AWD</sub>B<sub>20A</sub> decreased CH<sub>4</sub> emissions by 75–89 % and greenhouse gas emission intensity (GHGI) by 75–90 % compared to I<sub>CF</sub>B<sub>0</sub> over the three years. Consequently, B<sub>20A</sub> coupled with I<sub>AWD</sub> achieves sustainable use of water resources, improves soil degradation and mitigates climate change.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104133"},"PeriodicalIF":6.7,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143600922","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}