Pub Date : 2025-04-23DOI: 10.1016/j.eti.2025.104225
Cheng Zhang , Boya Jin , Jiaqi Liu , Qiuping Wang , Bing Tian
Dinitroaniline herbicides are a class of highly efficient and broad-spectrum herbicides, and due to their large-scale use, their residue has become an important environmental problem. Degradation by microorganisms is the main manner in which they can be decomposed in the environment, and microorganisms’ advantages of high efficiency, non-toxicity, and no pollution confer upon them broad potential for development in pesticide degradation. Therefore, the isolation and screening of strains that can efficiently degrade dinitroaniline herbicides and the analysis of their degradation pathways and mechanisms can improve the theoretical basis for the remediation of dinitroaniline herbicide pollution. To promote research on the biodegradation of dinitroaniline herbicides, this paper presents a review on the progress in the research on dinitroaniline-degrading microbial strains, metabolic degradation pathways, and degradation-related genes and enzymes. We also discuss the current problems in the microbial degradation of dinitroaniline herbicides and the direction of future research, aiming to provide a reference for in-depth studies on this topic.
{"title":"Biodegradation of dinitroaniline herbicides: A comprehensive review","authors":"Cheng Zhang , Boya Jin , Jiaqi Liu , Qiuping Wang , Bing Tian","doi":"10.1016/j.eti.2025.104225","DOIUrl":"10.1016/j.eti.2025.104225","url":null,"abstract":"<div><div>Dinitroaniline herbicides are a class of highly efficient and broad-spectrum herbicides, and due to their large-scale use, their residue has become an important environmental problem. Degradation by microorganisms is the main manner in which they can be decomposed in the environment, and microorganisms’ advantages of high efficiency, non-toxicity, and no pollution confer upon them broad potential for development in pesticide degradation. Therefore, the isolation and screening of strains that can efficiently degrade dinitroaniline herbicides and the analysis of their degradation pathways and mechanisms can improve the theoretical basis for the remediation of dinitroaniline herbicide pollution. To promote research on the biodegradation of dinitroaniline herbicides, this paper presents a review on the progress in the research on dinitroaniline-degrading microbial strains, metabolic degradation pathways, and degradation-related genes and enzymes. We also discuss the current problems in the microbial degradation of dinitroaniline herbicides and the direction of future research, aiming to provide a reference for in-depth studies on this topic.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104225"},"PeriodicalIF":6.7,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143868843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-23DOI: 10.1016/j.eti.2025.104227
R. Pradana , B.D. González-González , I. González , N. Oliveira , H. Sixto , I. De Bustamante
Water is a vital element in the brewing industry, being present in all facets of its operation. This industry generates substantial wastewater quantities, requiring intensive and expensive treatment in Wastewater Treatment Plants (WWTP). Vegetation Filters (VF) are a type of Nature-Based Solution (NBS) for wastewater treatment that offers a sustainable alternative to these WWTP. In this work, an innovative ‘Lab-to-field’ procedure including several trials at different scales was conducted to assess the applicability of VFs to the brewing industry, starting from trials under greenhouse conditions to a real scale pilot plantation under Mediterranean conditions (Spain). This represents the first attempt to assess the use of VF in the brewing industry. The occurring processes during the trials under controlled conditions match those observed on the field, thus validating the experimental procedure as a quick and simple tool for new scenarios. While total phosphorous (TP), chemical oxygen demand (COD) or total suspended solids (TSS), among other parameters, were easily removed from the wastewater, nitrogen (N) leaching towards the aquifer was observed, especially during the second period of the VF operation. This was caused by the detrimental effects of the high salinity (especially sodicity) on soil and plant health, highlighting the need for rigorous control and maintenance. Minimizing the sodium (Na+) amounts in influent wastewater and the addition of soil amendments and proper soil and cultural management practices would be most beneficial for the overall system performance. More research is needed addressing the effects of suggested limitations on Na+-rich compounds during wastewater pretreatment
{"title":"Vegetation Filters for brewery wastewater treatment: Results of a ‘lab-to-field’ procedure under Mediterranean conditions compared to a conventional WWTP","authors":"R. Pradana , B.D. González-González , I. González , N. Oliveira , H. Sixto , I. De Bustamante","doi":"10.1016/j.eti.2025.104227","DOIUrl":"10.1016/j.eti.2025.104227","url":null,"abstract":"<div><div>Water is a vital element in the brewing industry, being present in all facets of its operation. This industry generates substantial wastewater quantities, requiring intensive and expensive treatment in Wastewater Treatment Plants (WWTP). Vegetation Filters (VF) are a type of Nature-Based Solution (NBS) for wastewater treatment that offers a sustainable alternative to these WWTP. In this work, an innovative ‘Lab-to-field’ procedure including several trials at different scales was conducted to assess the applicability of VFs to the brewing industry, starting from trials under greenhouse conditions to a real scale pilot plantation under Mediterranean conditions (Spain). This represents the first attempt to assess the use of VF in the brewing industry. The occurring processes during the trials under controlled conditions match those observed on the field, thus validating the experimental procedure as a quick and simple tool for new scenarios. While total phosphorous (TP), chemical oxygen demand (COD) or total suspended solids (TSS), among other parameters, were easily removed from the wastewater, nitrogen (N) leaching towards the aquifer was observed, especially during the second period of the VF operation. This was caused by the detrimental effects of the high salinity (especially sodicity) on soil and plant health, highlighting the need for rigorous control and maintenance. Minimizing the sodium (Na<sup>+</sup>) amounts in influent wastewater and the addition of soil amendments and proper soil and cultural management practices would be most beneficial for the overall system performance. More research is needed addressing the effects of suggested limitations on Na<sup>+</sup>-rich compounds during wastewater pretreatment</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104227"},"PeriodicalIF":6.7,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143868841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Organic management is a crucial practice for activating residual phosphorus (P) and enhancing its availability in soils, with microorganisms playing a central role in regulating P cycling. Despite this, the effects of long-term organic management on P availability via microbial functional traits remain insufficiently explored. This study evaluates the impact of chemical (industrial fertilizers) (CF) and organic fertilization (OF) over an extended period in tea plantations, also incorporating surrounding forestland (FD) for comparison. We analyzed soil properties, P fractions, microbial functional genes, and microbial communities involved in P cycling. Our findings demonstrated that CF and OF both significantly enhanced soil P availability and nutrient levels, with organic management showing a positive correlation with soil available P. Notably, OF significantly decreased the abundance of pstS, phnC, phnD and phnE compared to CF, suggesting the potentially inhibition of P uptake and transport system. Organic management significantly increased gene abundance of ppk1, ppx, aphA and glpA compared to CF, indicating the promotion of soil inorganic P solubilization and organic P mineralization. Different management did not significantly affected the functional genes relative abundance involved in P starvation response regulation. Organic management also markedly increased the abundance of Actinobacteria, Gemmatimonadetes and Chloroflexi, which were markedly positively related to soil available P. This study advances our understanding of the role of soil microbial functional genes and communities in enhancing P availability, elucidating the impacts of organic resources in subtropical tea plantations.
{"title":"Organic management improves soil P availability via increasing inorganic P solubilization in tea plantations","authors":"Yunni Chang , Zhidan Wu , Josep Peñuelas , Jordi Sardans , Yuzhen Chen , Fuying Jiang , Feng Wang","doi":"10.1016/j.eti.2025.104223","DOIUrl":"10.1016/j.eti.2025.104223","url":null,"abstract":"<div><div>Organic management is a crucial practice for activating residual phosphorus (P) and enhancing its availability in soils, with microorganisms playing a central role in regulating P cycling. Despite this, the effects of long-term organic management on P availability via microbial functional traits remain insufficiently explored. This study evaluates the impact of chemical (industrial fertilizers) (CF) and organic fertilization (OF) over an extended period in tea plantations, also incorporating surrounding forestland (FD) for comparison. We analyzed soil properties, P fractions, microbial functional genes, and microbial communities involved in P cycling. Our findings demonstrated that CF and OF both significantly enhanced soil P availability and nutrient levels, with organic management showing a positive correlation with soil available P. Notably, OF significantly decreased the abundance of <em>pstS, phnC, phnD and phnE</em> compared to CF<em>,</em> suggesting the potentially inhibition of P uptake and transport system. Organic management significantly increased gene abundance of <em>ppk1, ppx</em>, <em>aphA</em> and <em>glpA</em> compared to CF, indicating the promotion of soil inorganic P solubilization and organic P mineralization. Different management did not significantly affected the functional genes relative abundance involved in P starvation response regulation. Organic management also markedly increased the abundance of <em>Actinobacteria, Gemmatimonadetes</em> and <em>Chloroflexi</em>, which were markedly positively related to soil available P. This study advances our understanding of the role of soil microbial functional genes and communities in enhancing P availability, elucidating the impacts of organic resources in subtropical tea plantations.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104223"},"PeriodicalIF":6.7,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143874896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-23DOI: 10.1016/j.eti.2025.104226
Feng Ai , Shimei Zheng , Chunmei Zeng , Binbin Li , Kaiyu Zhang , Chenchen Zhang , Qiang Li , Longfei Kang
The vermicompost coupled with coal-based soil conditioner has the potential to improve soil physicochemical properties and enhance the growth of plants. It plays a crucial role in facilitating the biogeochemical cycling of elements and maintaining ecological balance in ecosystems. However, there is still insufficient evidence on the specific promotion mechanisms. To investigate the effects of coal-based soil conditioners and vermicompost application on sandy soil ecosystem multifunctionality and growth characteristics of Leymus chinensis (Trin.) Tzvel. (L. chinensis), a field trial was conducted in semi-arid region. Treatments include T1 (vermicompost: soil conditioner = 1:2), T2 (1:1), T3 (2:1), and control check (CK). Study results indicated that soil properties significantly improved when vermicompost and soil conditioner were applied at a 2:1 ratio. This treatment resulted in a substantial increase in soil moisture content, nutrients content and alkaline phosphatase (ALP) enzyme activity. Soil ALP in amendment treatments significantly increased by 61.54 % compared with CK treatment. Furthermore, the growth of L. chinensis was improved and biomass increased form 7.3–40.6 % than CK treatment. The α-diversity and abundance of soil microorganisms in amendment treatments were superior rather than CK treatment (p < 0.05). Moreover, soil microbial communities were primarily influenced by soil AvN, pH and AvK. The Chloroflexi was identified as the key factor when we compared between T3 and other treatments. Mantel test further showed that AvN was significantly correlated with microbial communities. Path models showed that the addition of vermicompost and coal-based conditioner enhanced the feedback effect of soil microorganisms on plant growth status in the soil-plant system. Our findings strongly demonstrated that the application of vermicompost and soil conditioner significantly improved sandy soil multifunctionality by increasing soil moisture content, enhancing nutrient contents, regulating microbial communities and facilitating plant biomass. Thus vermicompost combined with coal-based soil conditioner can be considered as a potential material to improve soil ecological functions and promote plant production.
{"title":"Soil ecosystem multifunctionality and growth characteristics of Leymus chinensis were enhanced after sandy soil amendment with vermicompost and soil conditioner in soil-plant-microbe system","authors":"Feng Ai , Shimei Zheng , Chunmei Zeng , Binbin Li , Kaiyu Zhang , Chenchen Zhang , Qiang Li , Longfei Kang","doi":"10.1016/j.eti.2025.104226","DOIUrl":"10.1016/j.eti.2025.104226","url":null,"abstract":"<div><div>The vermicompost coupled with coal-based soil conditioner has the potential to improve soil physicochemical properties and enhance the growth of plants. It plays a crucial role in facilitating the biogeochemical cycling of elements and maintaining ecological balance in ecosystems. However, there is still insufficient evidence on the specific promotion mechanisms. To investigate the effects of coal-based soil conditioners and vermicompost application on sandy soil ecosystem multifunctionality and growth characteristics of <em>Leymus chinensis</em> (Trin.) Tzvel. (<em>L. chinensis</em>), a field trial was conducted in semi-arid region. Treatments include T1 (vermicompost: soil conditioner = 1:2), T2 (1:1), T3 (2:1), and control check (CK). Study results indicated that soil properties significantly improved when vermicompost and soil conditioner were applied at a 2:1 ratio. This treatment resulted in a substantial increase in soil moisture content, nutrients content and alkaline phosphatase (ALP) enzyme activity. Soil ALP in amendment treatments significantly increased by 61.54 % compared with CK treatment. Furthermore, the growth of <em>L. chinensis</em> was improved and biomass increased form 7.3–40.6 % than CK treatment. The α-diversity and abundance of soil microorganisms in amendment treatments were superior rather than CK treatment (p < 0.05). Moreover, soil microbial communities were primarily influenced by soil AvN, pH and AvK. The <em>Chloroflexi</em> was identified as the key factor when we compared between T3 and other treatments. Mantel test further showed that AvN was significantly correlated with microbial communities. Path models showed that the addition of vermicompost and coal-based conditioner enhanced the feedback effect of soil microorganisms on plant growth status in the soil-plant system. Our findings strongly demonstrated that the application of vermicompost and soil conditioner significantly improved sandy soil multifunctionality by increasing soil moisture content, enhancing nutrient contents, regulating microbial communities and facilitating plant biomass. Thus vermicompost combined with coal-based soil conditioner can be considered as a potential material to improve soil ecological functions and promote plant production.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104226"},"PeriodicalIF":6.7,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143868840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Lignocellulose hydrolysate bioconversion into Polyhydroxyalkanoates (PHAs) has emerged as a captivating alternative to petroleum-based polymers. The present work investigated PHA biosynthesis from a volatile fatty acids (VFAs)-rich titer produced from anaerobic digestion of C5-sugar rich rice straw hydrolysate (RSH). The feast and famine approach employed for PHA production produced 9.207 g COD/L PHA during famine cycle 5, resulting in a PHA yield of 0.11 g PHA/g dry rice straw. Famine conditions selectively induce stress and allow only stress-tolerant organisms to survive. The microbial community population during the maximum PHA production was dominated by genera Acinetobacter Paenibacillus, Bacillus, and Lysinibacillus. The produced PHA was analyzed by NMR and FTIR and found to be a copolymer Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) combination of ∼55 % hydroxybutyrate (HB) and ∼45 % hydroxyvalerate. Biodegradable and biocompatible plastic products made from this PHA combination can be used in a variety of applications, including biotechnology, food packaging, and medical equipment.
{"title":"Rice straw hydrolysate valorization for efficient polyhydroxyalkanoate production in a two-stage process","authors":"Fanirintsoa Herivonona Andrianantenaina , Raj Morya , Hwan-Hong Joo , Sang-Hyoun Kim","doi":"10.1016/j.eti.2025.104217","DOIUrl":"10.1016/j.eti.2025.104217","url":null,"abstract":"<div><div>Lignocellulose hydrolysate bioconversion into Polyhydroxyalkanoates (PHAs) has emerged as a captivating alternative to petroleum-based polymers. The present work investigated PHA biosynthesis from a volatile fatty acids (VFAs)-rich titer produced from anaerobic digestion of C5-sugar rich rice straw hydrolysate (RSH). The feast and famine approach employed for PHA production produced 9.207 g COD/L PHA during famine cycle 5, resulting in a PHA yield of 0.11 g PHA/g dry rice straw. Famine conditions selectively induce stress and allow only stress-tolerant organisms to survive. The microbial community population during the maximum PHA production was dominated by genera <em>Acinetobacter Paenibacillus, Bacillus</em>, and <em>Lysinibacillus.</em> The produced PHA was analyzed by NMR and FTIR and found to be a copolymer Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) combination of ∼55 % hydroxybutyrate (HB) and ∼45 % hydroxyvalerate. Biodegradable and biocompatible plastic products made from this PHA combination can be used in a variety of applications, including biotechnology, food packaging, and medical equipment.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104217"},"PeriodicalIF":6.7,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143868842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Agricultural practices like continuous cropping and excessive chemical fertilization contribute to soil nutrient depletion, adversely affecting the quality and yield of passion fruit. To sustainably enhance soil quality and ensure the quality of passion fruit, this study investigates the combined application of alkaline humic acid fertilizer (AHF) and chemical fertilizer (CF) in passion fruit cultivation on a field that had been continuously cultivated for two years. We observed that the 55 % CF + AHF treatment (a 45 % reduction in CF with AHF) significantly improved soil nutrient content compared to the 100 % CF treatment, resulting in increases of 112.9 % in available nitrogen (AN), 107.9 % in available phosphorus (AP), and 446.2 % in available potassium (AK). This treatment also maintained soil conductivity and trace mineral stability while enhancing several fruit quality indicators, including a 40.4 % increase in fruit yield, as well as improvements in the sugar/acid ratio, vitamin C (VC) content, and amino acid levels. Furthermore, metabolomics analyses indicated that the 55 % CF + AHF group was enriched in functional small molecules, such as piceatannol, isoorientin, phytosphingosine, oligopeptides, and flavor-related compounds. Conversely, higher rates of CF application were associated with significant reductions in three functional oligopeptides levels. Therefore, this underscores AHF's critical role as a supplement for reducing CF usage while mitigating negative effects from continuous passion fruit cultivation. Thus, the 55 % CF + AHF treatment may represent a viable strategy to sustainably improve soil quality and ensure the quality of passion fruit while also contributing to a more sustainable agricultural system.
{"title":"Enhancing passion fruit (Passiflora edulis f. flavicarpa Degener) agriculture with application of alkaline humic acid fertilizer and chemical fertilizer: A effective approach to soil and fruit quality optimization","authors":"Qiong Fan , Junyan Yu , Jian Feng , Huiyu Wu , Yuanda Jiu , Xiaofang Wu , Qun Zhang , Zhi Xu , Zhenzhen Xu","doi":"10.1016/j.eti.2025.104214","DOIUrl":"10.1016/j.eti.2025.104214","url":null,"abstract":"<div><div>Agricultural practices like continuous cropping and excessive chemical fertilization contribute to soil nutrient depletion, adversely affecting the quality and yield of passion fruit. To sustainably enhance soil quality and ensure the quality of passion fruit, this study investigates the combined application of alkaline humic acid fertilizer (AHF) and chemical fertilizer (CF) in passion fruit cultivation on a field that had been continuously cultivated for two years. We observed that the 55 % CF + AHF treatment (a 45 % reduction in CF with AHF) significantly improved soil nutrient content compared to the 100 % CF treatment, resulting in increases of 112.9 % in available nitrogen (AN), 107.9 % in available phosphorus (AP), and 446.2 % in available potassium (AK). This treatment also maintained soil conductivity and trace mineral stability while enhancing several fruit quality indicators, including a 40.4 % increase in fruit yield, as well as improvements in the sugar/acid ratio, vitamin C (VC) content, and amino acid levels. Furthermore, metabolomics analyses indicated that the 55 % CF + AHF group was enriched in functional small molecules, such as piceatannol, isoorientin, phytosphingosine, oligopeptides, and flavor-related compounds. Conversely, higher rates of CF application were associated with significant reductions in three functional oligopeptides levels. Therefore, this underscores AHF's critical role as a supplement for reducing CF usage while mitigating negative effects from continuous passion fruit cultivation. Thus, the 55 % CF + AHF treatment may represent a viable strategy to sustainably improve soil quality and ensure the quality of passion fruit while also contributing to a more sustainable agricultural system.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104214"},"PeriodicalIF":6.7,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143874897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-21DOI: 10.1016/j.eti.2025.104218
Yanyan Liu , Bangxiao Zheng , Min Zhao , Feng Zheng , Xiaoqing Chen , Lei Wang
The effectiveness of ultraviolet advanced oxidation processes (UV-AOPs) was influenced by the prevalence of dissolved organic matter (DOM) in natural water bodies. This study investigated the impact of humic acid (HA), fulvic acid (FA), and extracellular organic matter (EOM) on the degradation of Ciprofloxacin (CIP) by UV222/Sodium Percarbonate (UV222/SPC) and UV222. The results demonstrated that all three types of DOMs suppressed CIP degradation in UV222/SPC, with EOM exhibiting stronger inhibitory effects than HA and FA. This suppression primarily arose from DOM's light-shielding properties and scavenging of hydroxyl radicals (•OH) and carbonate radicals (CO₃•⁻), which outweighed the compensatory effects of DOM-photosensitized reactive species. In contrast, EOM enhanced direct UV222 photolysis of CIP due to its high absorption coefficient at 222 nm, which promoted the generation of excited triplet state EOM (3EOM*) and singlet oxygen (1O2) via photosensitization. These reactive species compensated for EOM’s light-shielding effect, enabling efficient indirect photodegradation of CIP. The organic matter in EOM rather than NO3- promoted the degradation of CIP in UV222. The fluorescence spectra and dissolved organic carbon (DOC) changes of DOM were analyzed in depth. In addition, both CO₃•⁻ and •OH contribute to CIP degradation in UV222/SPC, with the second-order rate constant of CO₃•⁻ with CIP measured at 4.79 × 10⁸ M⁻¹ s⁻¹ . UV222/SPC showed lower energy consumption than UV254/SPC in treating the real water sample. This study deepens the understanding of the impact of DOM in UV222 water purification.
{"title":"The role of different DOMs in the degradation of ciprofloxacin under UV222 and UV222/percarbonate systems","authors":"Yanyan Liu , Bangxiao Zheng , Min Zhao , Feng Zheng , Xiaoqing Chen , Lei Wang","doi":"10.1016/j.eti.2025.104218","DOIUrl":"10.1016/j.eti.2025.104218","url":null,"abstract":"<div><div>The effectiveness of ultraviolet advanced oxidation processes (UV-AOPs) was influenced by the prevalence of dissolved organic matter (DOM) in natural water bodies. This study investigated the impact of humic acid (HA), fulvic acid (FA), and extracellular organic matter (EOM) on the degradation of Ciprofloxacin (CIP) by UV<sub>222</sub>/Sodium Percarbonate (UV<sub>222</sub>/SPC) and UV<sub>222</sub>. The results demonstrated that all three types of DOMs suppressed CIP degradation in UV<sub>222</sub>/SPC, with EOM exhibiting stronger inhibitory effects than HA and FA. This suppression primarily arose from DOM's light-shielding properties and scavenging of hydroxyl radicals (•OH) and carbonate radicals (CO₃•⁻), which outweighed the compensatory effects of DOM-photosensitized reactive species. In contrast, EOM enhanced direct UV<sub>222</sub> photolysis of CIP due to its high absorption coefficient at 222 nm, which promoted the generation of excited triplet state EOM (<sup>3</sup>EOM*) and singlet oxygen (<sup>1</sup>O<sub>2</sub>) via photosensitization. These reactive species compensated for EOM’s light-shielding effect, enabling efficient indirect photodegradation of CIP. The organic matter in EOM rather than NO<sub>3</sub><sup>-</sup> promoted the degradation of CIP in UV<sub>222</sub>. The fluorescence spectra and dissolved organic carbon (DOC) changes of DOM were analyzed in depth. In addition, both CO₃•⁻ and •OH contribute to CIP degradation in UV<sub>222</sub>/SPC, with the second-order rate constant of CO₃•⁻ with CIP measured at 4.79 × 10⁸ M⁻¹ s⁻¹ . UV<sub>222</sub>/SPC showed lower energy consumption than UV<sub>254</sub>/SPC in treating the real water sample. This study deepens the understanding of the impact of DOM in UV<sub>222</sub> water purification.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104218"},"PeriodicalIF":6.7,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143874895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-21DOI: 10.1016/j.eti.2025.104220
Shifa Zuhara, Gordon McKay
The global issue of waste and wastewater management presents significant environmental and health challenges, particularly in regions like Qatar, where rapid industrial growth exacerbates these problems. This study tackles these challenges by evaluating the potential of waste-derived activated carbons, produced from Gas-to-liquids (GTL) derived biosolids, cardboard, and mixed waste, to remove toxic metals such as strontium and barium from water. The activated carbons demonstrated exceptional adsorption capacities, with mixed samples achieving 91 mg/g for strontium and 99 mg/g for barium in single adsorption systems. In binary systems, the adsorption capacities were slightly lower, reaching 80.5 mg/g for strontium and 90.0 mg/g for barium, reflecting the competitive adsorption dynamics between the two metals. Isotherm modeling revealed the Toth model as the best fit for single pollutant adsorption, while the Langmuir model captured the dynamics of binary systems. Kinetic studies identified pollutant-specific behaviors, with pseudo-second-order (PSO) kinetics describing strontium adsorption and chemisorption modeling barium adsorption. For binary systems, the Avrami model provided the best fit, highlighting complex multi-site adsorption mechanisms. Thermodynamic analysis confirmed the spontaneity and exothermic nature of the adsorption process. Regeneration studies showed the reusability of activated carbons, with nitric acid achieving the highest desorption efficiency and minimal performance loss over three cycles. Mechanistic analysis indicated adsorption was driven by electrostatic attraction, π-electron interactions, and ion exchange, with a preference for larger pollutants like barium. This study highlights the potential of mixed waste-derived activated carbons as a sustainable and efficient solution for wastewater treatment, addressing critical environmental challenges while advancing circular economy initiatives.
{"title":"Single and binary pollutant adsorption of strontium and barium on waste-derived activated carbons: Modelling, regeneration and mechanistic insights","authors":"Shifa Zuhara, Gordon McKay","doi":"10.1016/j.eti.2025.104220","DOIUrl":"10.1016/j.eti.2025.104220","url":null,"abstract":"<div><div>The global issue of waste and wastewater management presents significant environmental and health challenges, particularly in regions like Qatar, where rapid industrial growth exacerbates these problems. This study tackles these challenges by evaluating the potential of waste-derived activated carbons, produced from Gas-to-liquids (GTL) derived biosolids, cardboard, and mixed waste, to remove toxic metals such as strontium and barium from water. The activated carbons demonstrated exceptional adsorption capacities, with mixed samples achieving 91 mg/g for strontium and 99 mg/g for barium in single adsorption systems. In binary systems, the adsorption capacities were slightly lower, reaching 80.5 mg/g for strontium and 90.0 mg/g for barium, reflecting the competitive adsorption dynamics between the two metals. Isotherm modeling revealed the Toth model as the best fit for single pollutant adsorption, while the Langmuir model captured the dynamics of binary systems. Kinetic studies identified pollutant-specific behaviors, with pseudo-second-order (PSO) kinetics describing strontium adsorption and chemisorption modeling barium adsorption. For binary systems, the Avrami model provided the best fit, highlighting complex multi-site adsorption mechanisms. Thermodynamic analysis confirmed the spontaneity and exothermic nature of the adsorption process. Regeneration studies showed the reusability of activated carbons, with nitric acid achieving the highest desorption efficiency and minimal performance loss over three cycles. Mechanistic analysis indicated adsorption was driven by electrostatic attraction, π-electron interactions, and ion exchange, with a preference for larger pollutants like barium. This study highlights the potential of mixed waste-derived activated carbons as a sustainable and efficient solution for wastewater treatment, addressing critical environmental challenges while advancing circular economy initiatives.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104220"},"PeriodicalIF":6.7,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143855865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study used volcanic rock and glass pumice to explore the effects of the specific surface area, porosity and stacking density of packing materials on BTF performance through experiments and computational fluid dynamics (CFD) simulations. When the empty bed residence time (EBRT) is 59 s, glass pumice can fully treat acrylonitrile up to 700 mg/m3, while volcanic rock can only be fully treated when the acrylonitrile concentration is reduced to 450 mg/m3. Microbial community analysis found that the relative abundance of dominant bacterial species in the BTF filled with glass pumice was higher, which corresponded to its better performance. Through CFD simulation, it was found that reducing the stacking density of packing materials will lead to an increase in BTF performance. On the contrary, too high stacking density will lead to BTF clogging. This study provides a reference for the selection and application of packing materials and the use of CFD.
{"title":"Study on the influence of packing material on biotrickling filter for acrylonitrile removal: Experiments and CFD simulations","authors":"Shuaihao Liu, Panfeng Gao, Haiyan Fu, Jiangxue Long, Qilin Zhang, Yuan Dai, Liyong Wang, Fengle Sun, Ronghui Tang, Yinghuang Lin","doi":"10.1016/j.eti.2025.104176","DOIUrl":"10.1016/j.eti.2025.104176","url":null,"abstract":"<div><div>This study used volcanic rock and glass pumice to explore the effects of the specific surface area, porosity and stacking density of packing materials on BTF performance through experiments and computational fluid dynamics (CFD) simulations. When the empty bed residence time (EBRT) is 59 s, glass pumice can fully treat acrylonitrile up to 700 mg/m<sup>3</sup>, while volcanic rock can only be fully treated when the acrylonitrile concentration is reduced to 450 mg/m<sup>3</sup>. Microbial community analysis found that the relative abundance of dominant bacterial species in the BTF filled with glass pumice was higher, which corresponded to its better performance. Through CFD simulation, it was found that reducing the stacking density of packing materials will lead to an increase in BTF performance. On the contrary, too high stacking density will lead to BTF clogging. This study provides a reference for the selection and application of packing materials and the use of CFD.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104176"},"PeriodicalIF":6.7,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143874707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-26DOI: 10.1016/j.eti.2025.104171
Xiao Tan , Gang Pan , Wenxue Che , Ying Man , Liyi Wang , Jinting Li , Hui Zhao
Microalgal-bacterial consortia provide a sustainable, low-cost solution for antibiotic-contaminated wastewater remediation. Microalgae cultivation typically involves natural symbiotic bacteria, which are often overlooked. To fill this gap, this study evaluated the adaptive response of Dunaliella sp. and its natural symbiotic bacteria to sulfamethoxazole (SMX) through cultivation experiments and 16S rDNA sequencing. The results demonstrated strong SMX tolerance but limited removal efficiency by the consortium. The adaptive responses were characterized by increased bacterial diversity and connectivity, with quorum sensing bacteria-driven community changes and biofilm formation playing a critical role in this process. Dunaliella sp. exhibited strong antioxidant capacity (with catalase playing a key role) and increased extracellular polymeric substances secretion, which not only contributed to its tolerance but also promoted microalgae-bacteria interactions, enhancing consortium adaptability. These findings strengthen our understanding of the responses of natural symbiotic bacteria to antibiotics and advance the development of microalgae-bacteria symbiosis technology for wastewater treatment.
{"title":"Adaptation responses of Dunaliella sp. and its natural symbiotic bacteria to sulfamethoxazole","authors":"Xiao Tan , Gang Pan , Wenxue Che , Ying Man , Liyi Wang , Jinting Li , Hui Zhao","doi":"10.1016/j.eti.2025.104171","DOIUrl":"10.1016/j.eti.2025.104171","url":null,"abstract":"<div><div>Microalgal-bacterial consortia provide a sustainable, low-cost solution for antibiotic-contaminated wastewater remediation. Microalgae cultivation typically involves natural symbiotic bacteria, which are often overlooked. To fill this gap, this study evaluated the adaptive response of <em>Dunaliella</em> sp. and its natural symbiotic bacteria to sulfamethoxazole (SMX) through cultivation experiments and 16S rDNA sequencing. The results demonstrated strong SMX tolerance but limited removal efficiency by the consortium. The adaptive responses were characterized by increased bacterial diversity and connectivity, with quorum sensing bacteria-driven community changes and biofilm formation playing a critical role in this process. <em>Dunaliella</em> sp. exhibited strong antioxidant capacity (with catalase playing a key role) and increased extracellular polymeric substances secretion, which not only contributed to its tolerance but also promoted microalgae-bacteria interactions, enhancing consortium adaptability. These findings strengthen our understanding of the responses of natural symbiotic bacteria to antibiotics and advance the development of microalgae-bacteria symbiosis technology for wastewater treatment.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104171"},"PeriodicalIF":6.7,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143725635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}