Shivani Thakur, Agnibha Sinha, Animesh Ghosh Bag, Riyadh S. Almalki, Akbar Hossain
{"title":"Challenges, solutions and policy issues for residue burning in Indian agriculture: searching key steps to reduce environmental pollution","authors":"Shivani Thakur, Agnibha Sinha, Animesh Ghosh Bag, Riyadh S. Almalki, Akbar Hossain","doi":"10.1007/s11869-025-01699-3","DOIUrl":"10.1007/s11869-025-01699-3","url":null,"abstract":"<div><p>In India, the Indo-Gangetic Plain has become a hotspot for atmospheric pollutants, with seasonal residue burning being a major contributor. The rapid increase in crop productivity with the introduction of high-yield varieties increased the challenge of managing the large quantity of residue generated, which ultimately pushed agriculture towards heavy mechanization. Managing a substantial quantity of leftover material after mechanical harvesting is burdensome, so farmers are choosing easy methods, i.e., in situ residue burning. Statewise analysis in India revealed that Punjab (64%) was the highest contributor, followed by Haryana (11%) and UP (5.7%). The key causes of crop residue burning are mainly labour shortages, rapid mechanization and increased cropping intensity, which adversely affect multiple systems, such as human health, environmental quality, and soil health. Alternative eco-friendly solutions to residue burning, such as energy generation, composting, paper production, soil incorporation, mulching, and biochar production, to increase farmers’ income and address employability have been explored in this study. The importance of integrated policy frameworks that prioritize farmer incentives, capacity building, and awareness campaigns has been highlighted. The study underscores the need of synchronised efforts between stakeholders and the adoption of innovative techniques like remote sensing for monitoring the intensity and variability of problem nationwide. This review serves as a roadmap for developing sustainable strategies to curb residue burning and reduce environmental pollution.</p></div>","PeriodicalId":49109,"journal":{"name":"Air Quality Atmosphere and Health","volume":"18 4","pages":"1225 - 1255"},"PeriodicalIF":2.9,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}
Maryam Samani, Yogesh K. Ahlawat, Ahmad Golchin, Ahmad Bybordi, Nisha Sharma, Hossein Ali Alikhani
{"title":"Evaluating seasonal health risks of copper, nickel, and chromium in airborne dust","authors":"Maryam Samani, Yogesh K. Ahlawat, Ahmad Golchin, Ahmad Bybordi, Nisha Sharma, Hossein Ali Alikhani","doi":"10.1007/s11869-025-01704-9","DOIUrl":"10.1007/s11869-025-01704-9","url":null,"abstract":"<div><p>The primary objective of this study was to determine the concentration of heavy metals in atmospheric dust fallout and to evaluate their potential health risks to humans. Heavy metals are a significant concern in atmospheric dust as they can enter the human body through ingestion, inhalation, and dermal contact, potentially causing various health problems. This research specifically measured the quantities of dust fallout and the concentrations of copper (Cu), nickel (Ni), and chromium (Cr) in atmospheric dust across Tehran, from its western to eastern regions, during the period from winter 2018 to autumn 2019. Sampling sites were established at two points, one in the western area and one in the eastern area, particularly covering districts 11, 10, and 12 and the adjacent western regions. Monthly dust samples were collected over a year. A factorial experiment was conducted using a completely randomized design with three replications, considering sampling points (S.P.) and seasons as factors. The concentrations of Cu, Ni, and Cr were determined using a hydrochloric acid and concentrated nitric acid extraction method in a 3:1 ratio. Health risk assessments were calculated using the methodology provided by the U.S. Environmental Protection Agency (EPA). The results revealed that both the sampling location and the time of sampling significantly influenced the quantity of dust fallout and the concentrations of Cu, Ni, and Cr in the collected samples. The highest amount of atmospheric dust fallout was recorded during autumn at points 10E (Imam Khomeini Street), 11E (Vahdat Islami Street), and 12E (17th Shahrivar Street), with an average of 23.24 g·m⁻²·season⁻¹. Conversely, the lowest amount of dust fallout, 15.33 g·m⁻²·season⁻¹, was observed in winter at point 9 W, located in Tehransar. The highest amounts of Cu and Ni were measured in autumn at point 11E, reaching 11.22 and 4.45 mg·m⁻²·season⁻¹, respectively, while the highest Cr concentration, 52.3 mg·m⁻²·season⁻¹, was observed in autumn at points 10E, 11E, and 12E. In contrast, the lowest levels of Cu, Ni, and Cr—2.27, 1.4, and 0.96 mg·m⁻²·season⁻¹, respectively—were recorded during winter at point 9 W. Similarly, the lowest concentrations of Cu, Ni, and Cr in the dust (148.6, 91.83, and 62.86 mg·kg⁻¹, respectively) were found during winter at point 9 W. On the other hand, the highest concentrations of these metals were observed during autumn at point 11E (Vahdat Islami Street), with values of 646.46, 184.43, and 45.9 mg·kg⁻¹, respectively. Overall, the findings indicated that both the concentrations of heavy metals and the amount of atmospheric dust fallout tended to increase from west to east and from winter to autumn. The health risk assessment results demonstrated that ingestion of atmospheric dust fallout was the primary exposure route for heavy metals, accounting for over 90% of the non-cancerous disease risk associated with Cu, Ni, and Cr. For Cu and Ni, the highest levels of HQ<sub>i","PeriodicalId":49109,"journal":{"name":"Air Quality Atmosphere and Health","volume":"18 4","pages":"1147 - 1167"},"PeriodicalIF":2.9,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Morphology, chemical composition, and source characteristics of fine particulate pollutants emitted during firecracker burning events associated with Diwali festival in India","authors":"Rajitha J Rajan, R Sathyanathan","doi":"10.1007/s11869-025-01700-z","DOIUrl":"10.1007/s11869-025-01700-z","url":null,"abstract":"<div><p>This study investigates the temporal variation and physicochemical characteristics of PM<sub>2.5</sub> during the Diwali festival in a semi-urban region of Tamil Nadu, India. PM<sub>2.5</sub> samples, collected using a fine particulate sampler, were analyzed for morphology and composition. SEM identified diverse particle shapes, including spherical, hexagonal, and fractal structures, indicative of carbonaceous particles, earth crust materials, and feldspar group minerals. EDX analysis detected 18 elements, with carbon (C), nitrogen (N), and oxygen (O) as major constituents. FTIR analysis revealed ammonium ions (1420–1432 cm⁻¹) from ammonium perchlorate, sulfate compounds (612–1148 cm⁻¹) linked to firecracker fuels, and zinc oxide (550–557 cm⁻¹) from spark-producing agents. Carbonyl groups (1424–1707 cm⁻¹) highlighted emissions from fireworks and biomass burning. HYSPLIT back trajectory analysis traced pollutant-laden air masses to north-central and eastern India, traversing the Bay of Bengal. Principal component analysis (PCA) identified five key PM<sub>2.5</sub> sources: firecracker emissions, soil disturbances, sea salt spray, biomass burning, and industrial activities. PM<sub>2.5</sub> concentrations exceeded WHO and NAAQS limits, ranging from 25.05 to 137.19 µg/m³ in 2022 and 62.50–807.47 µg/m³ in 2023. During the festival period, AQI levels escalated to “Poor” in 2022 and “Severe” in 2023, while remaining “Satisfactory” before and after the festival. Health risk assessments showed minimal non-cancerous effects; however, lifetime cancer risks associated with Chromium exceeded safe thresholds, posing a significant health risk. This study highlights the substantial air quality impacts of cultural celebrations, offering critical data for source apportionment and mitigation strategies during episodic pollution events.</p></div>","PeriodicalId":49109,"journal":{"name":"Air Quality Atmosphere and Health","volume":"18 4","pages":"1127 - 1146"},"PeriodicalIF":2.9,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Volatile organic compounds in residential indoor environments in winter: a field investigation in Beijing","authors":"Yanru Wei, Xiaolu Wang, Mengli Ji, Shunxi Deng, Meimei Zhou, Lihui Huang","doi":"10.1007/s11869-025-01695-7","DOIUrl":"10.1007/s11869-025-01695-7","url":null,"abstract":"<div><p>Many volatile organic compounds (VOCs) are harmful to human health. Exposure to VOCs primarily occurs indoors. Indoor VOC pollution is thus of particular importance for public health. In this study, indoor air samples in the winter were collected for 24 h in 32 urban residences in Beijing. The concentrations of 52 VOCs in indoor air were analyzed. The most abundant species in terms of geometric mean concentration were <i>d</i>-limonene (33.3 μg/m<sup>3</sup>), toluene (19.7 μg/m<sup>3</sup>), acetaldehyde (13.3 μg/m<sup>3</sup>), formaldehyde (13.0 μg/m<sup>3</sup>), ethyl acetate (8.0 μg/m<sup>3</sup>), α-terpene (7.5 μg/m<sup>3</sup>), benzene (7.1 μg/m<sup>3</sup>), acetone (6.9 μg/m<sup>3</sup>) and ethylbenzene (6.7 μg/m<sup>3</sup>). The monitoring results were compared to those in the summer. It was found that the concentrations of terpenes in the winter were significantly higher, whereas those of alkanes, halogenates and carbonyls were significantly lower. The species such as decanal and nonanal, which are products of O<sub>3</sub>-initiated reactions indoors, were below detection limit in the winter. Factor analysis and General linear model (GLM) revealed that the origins of those VOCs included emissions of wooden products, emissions of wall coverings, cooking, household cleaning and disinfection products, smoking in indoor spaces as well as vehicular and industrial emissions outdoors. In addition, significantly higher concentrations of 1, 4-dichlorobenzene were found in the dwellings that were renovated more than 10 years ago. It is likely due to more popular use of flooring and furniture made of solid wood in the past.</p></div>","PeriodicalId":49109,"journal":{"name":"Air Quality Atmosphere and Health","volume":"18 4","pages":"1115 - 1126"},"PeriodicalIF":2.9,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}
Odbaatar Enkhjargal, Munkhnasan Lamchin, Xue Yi You, Jonathan Chambers, Davaagatan Tuyagerel, Renchinmyadag Tovuudorj, Zolzaya Khurelsukh, Enkhmaa Sarangerel, Nyamgerel Enkhtuya
{"title":"Correction: Carcinogenic and non-carcinogenic risk assessment of heavy metals in PM2.5 air pollutant in Ulaanbaatar, Mongolia during the wintertime","authors":"Odbaatar Enkhjargal, Munkhnasan Lamchin, Xue Yi You, Jonathan Chambers, Davaagatan Tuyagerel, Renchinmyadag Tovuudorj, Zolzaya Khurelsukh, Enkhmaa Sarangerel, Nyamgerel Enkhtuya","doi":"10.1007/s11869-025-01705-8","DOIUrl":"10.1007/s11869-025-01705-8","url":null,"abstract":"","PeriodicalId":49109,"journal":{"name":"Air Quality Atmosphere and Health","volume":"18 2","pages":"631 - 631"},"PeriodicalIF":2.9,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143622257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Quantification of urban region planetary boundary layer characteristics over edge of outflow of IGP and inflow of Bay of Bengal","authors":"Ghouse Basha, M. Venkat Ratnam, V. Ravi Kiran","doi":"10.1007/s11869-025-01696-6","DOIUrl":"10.1007/s11869-025-01696-6","url":null,"abstract":"<div><p>The Atmospheric Boundary Layer (ABL) structure plays a crucial role in meteorology and pollution studies in the urban regions. To gain a comprehensive understanding of variability of ABL, its characteristics and factors influencing the ABL, we utilized 3 years of measurements from the Väisälä CL51 ceilometer located at the Kolkata Camp Observatory of NARL (KCON) at the Regional Remote Sensing Centre, Kolkata an urban region, India located at the outflow of Indo-Gangetic Plain (IGP). Our ceilometer measurements of ABL height closely matched those obtained from radiosondes. However, reanalysis data could not capture all the layers present in ABL. Over Kolkata, significant diurnal and seasonal variations of ABL height is observed. Across all the seasons except winter, we observed a notable difference in ABL height between clear and cloudy days. This finding highlights the importance of considering weather conditions when interpreting ABL characteristics. We delved deeper into the ABL’s behaviour by analysing various characteristics including morning transition (MT) evening transitions (ET), nocturnal decay duration, and rate. Interestingly, the pre-monsoon season saw the fastest morning growth rates, reaching 150 m/hr. This was followed by the post-monsoon season (128 m/hr), the monsoon season (98 m/hr), and winter (90 m/hr). Additionally, we explored the relation between surface temperature and ABL processes. These results are useful for boundary layer parameterization and improve our understanding of air pollution dispersion models in urban regions.</p></div>","PeriodicalId":49109,"journal":{"name":"Air Quality Atmosphere and Health","volume":"18 4","pages":"1101 - 1113"},"PeriodicalIF":2.9,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}
Simone Georges El Khouri Miraglia, Ronan Adler Tavella, Daniela Debone
{"title":"Unprecedented air quality crisis: The impact of widespread fires on air pollution in São Paulo","authors":"Simone Georges El Khouri Miraglia, Ronan Adler Tavella, Daniela Debone","doi":"10.1007/s11869-025-01701-y","DOIUrl":"10.1007/s11869-025-01701-y","url":null,"abstract":"<div><p>In 2024, Brazil faced an unprecedented environmental crisis as widespread fires impacted vast regions of the country, with severe effects reaching São Paulo, the largest metropolis in Latin America. This brief communication presents data on the sharp rise in air pollutant concentrations during the crisis and the observed health outcomes among residents. PM<sub>10</sub> levels increased by 140.81%, PM<sub>2.5</sub> by 144.26%, nitrogen dioxide (NO<sub>2</sub>) by 48.07%, and ozone (O<sub>3</sub>) by 24.97% compared to the same period in 2023. These spikes in pollution were associated with a 3.5% increase in the risk of cardiorespiratory problems, as well as a rise in healthcare visits and hospital admissions for respiratory conditions. This severe episode underscores a recurring reality in Brazil. The observed impact highlights the consequences of inadequate wildfire management and insufficient enforcement against illegal burning practices, which persistently threaten public health and environmental stability. We emphasize the urgent need for regulatory updates, improved fire management strategies, and robust public health policies to prevent and mitigate the health impacts of these recurrent pollution crises.</p></div>","PeriodicalId":49109,"journal":{"name":"Air Quality Atmosphere and Health","volume":"18 4","pages":"1257 - 1262"},"PeriodicalIF":2.9,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Health for the future: spatiotemporal CA-MC modeling and spatial pattern prediction via dendrochronological approach for nickel and lead deposition","authors":"Oznur Isinkaralar, Kaan Isinkaralar, Hakan Sevik","doi":"10.1007/s11869-025-01702-x","DOIUrl":"10.1007/s11869-025-01702-x","url":null,"abstract":"<div><p>Nonpoint source pollution (P<sub>NS</sub>) poses a significant environmental challenge owing to its adverse impacts on public health and ecological sustainability. Knowing the spatial pattern of heavy metals (HMs), one of the toxic substances, in the organization of urban space and the production of zoning decisions, both in the selection of pollution sources and living spaces, is immensely guiding today and in the future. The city of Düzce may be susceptible to public health risks attributed to the accumulation of HMs from escalating urbanization activities. This study aims to reach the reasons of P<sub>NS</sub> by modeling nickel (Ni) and lead (Pb) concentrations, their spatial distributions, and how they may be spatially in the future. For Ni and Pb toxic substances, accumulation was analyzed based on annual tree rings (ATRs) of the same species, and future predictions were made based on the complex structure of the spatial pattern. The concentrations accumulated in <i>Picea orientalis</i> L. ATRs between 2018 and 2023 were analyzed. Predictions of 2028 were produced according to the low > middle > high classification by dividing the space into 500 × 500 m grids via Geographic Information Systems (GIS). The accuracy of the produced model was determined as R<sup>2</sup> = 0.9412 for Ni and R<sup>2</sup>=0.9882 for Pb. Design strategies at different scales were presented with a novel approach by examining the plan decisions of the area that reflected alarming results.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":49109,"journal":{"name":"Air Quality Atmosphere and Health","volume":"18 4","pages":"1087 - 1099"},"PeriodicalIF":2.9,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}
Shuangshuang Wu, Le Hou, Xuebin Sun, Min Liu, Nan Wang, Ru Li
{"title":"Characterizing temporal trends and meteorological influences on ozone pollution in Shenyang region (2018–2021)","authors":"Shuangshuang Wu, Le Hou, Xuebin Sun, Min Liu, Nan Wang, Ru Li","doi":"10.1007/s11869-025-01698-4","DOIUrl":"10.1007/s11869-025-01698-4","url":null,"abstract":"<div><p>With the acceleration of industrialization and urbanization, air quality has become a global concern. Ozone (O₃), a significant secondary pollutant in the atmosphere, is increasingly recognized as a major environmental and public health threat. This study focused on Shenyang, a major city in Northeast China, analyzing the temporal variation characteristics of O₃ concentrations at five different functional sites from 2018 to 2021. The study also examined trends and periodicities in O₃ concentrations using the Mann-Kendall test, Theil-Sen slope estimation, and Morlet wavelet analysis. Additionally, stepwise multiple linear regression was employed to assess the correlation between O₃ levels and meteorological factors. The results indicated that, despite variations in annual O₃ levels across different sites, a general downward trend was observed from 2020 to 2021, suggesting a reduction in O₃ pollution. Furthermore, O₃ concentrations were found to peak during the summer, gradually increasing from January and reaching their highest levels in May, June, or July. The Mann-Kendall test results revealed that only O₃ levels at sites D and E exhibited a statistically significant downward trend. All five selected sites showed clear periodic fluctuations in O₃ concentrations. Furthermore, O₃ levels were significantly positively correlated with temperature and wind speed, and significantly negatively correlated with relative humidity.</p></div>","PeriodicalId":49109,"journal":{"name":"Air Quality Atmosphere and Health","volume":"18 4","pages":"1169 - 1182"},"PeriodicalIF":2.9,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Removal of atmospheric pollutants using biochar: preparation, application, regeneration and its future research","authors":"Nisha Verma, Ningombam Linthoingambi Devi","doi":"10.1007/s11869-025-01692-w","DOIUrl":"10.1007/s11869-025-01692-w","url":null,"abstract":"<div><p>Air quality management is critical for achieving Sustainable Development Goal 3. Pollutants such as VOCs, NOx, and particulate matter contribute to over 3 million premature deaths each year. Annually, 140 Gt of biomass waste is produced mainly in the EU, Brazil, the USA, India, and China, with crop residue burning contributing to 18% of global CO₂ emissions and releasing harmful pollutants like PM and VOCs. This review highlights biochar as a viable solution for air pollution remediation, showcasing its strong adsorption capabilities for gases like CO₂ and NOx. Biochar can be produced from agricultural waste using methods such as pyrolysis as well as gasification and hydrothermal carbonization. These production methods create biochar with specific physicochemical properties that vary based on the type of feedstock used and the processing conditions. Activation techniques enhance adsorption capacity, achieving an 86% microporous structure with a surface area of 151 m<sup>2</sup>/g, with eucalyptus-activated biochar showing a 99.76% pollutant removal efficiency. Biochar has shown significant removal capabilities for various air pollutants, with miscanthus capturing MEK at 2.5 to 43 mg/g, bamboo-activated biochar achieving 89.19% removal of PM<sub>2.5</sub>, and rice husk biochar demonstrating a 95.7 mg/g capacity for NO and 100.181 mg/g for SO₂. Indoor pollution mitigation is enhanced as micro-gasification cookstoves reduce CO, CO₂, and PM<sub>2.5</sub> emissions by 79%, while finer biochar particles achieve 6% to 75% removal for VOCs like formaldehyde. Its porous structure allows for effective pollutant adsorption via physisorption and chemisorption. Reactivation methods, both thermal and non-thermal, enhance its adsorption capacity while preserving its integrity. Despite its benefits for air quality and carbon sequestration, biochar faces challenges, including greenhouse gas emissions during production and costly regeneration. However, converting biomass to biochar could sequester 0.3 to 2 Gt of CO₂ annually by 2050, supporting carbon market initiatives and circular economy goals.</p></div>","PeriodicalId":49109,"journal":{"name":"Air Quality Atmosphere and Health","volume":"18 4","pages":"1205 - 1224"},"PeriodicalIF":2.9,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}