Environmental Technology最新文献

{"title":"Flow condition mitigates the inhibition of high concentration Cu²⁺ on the sulfate reduction performance of microbial electrolysis cell.","authors":"Yunfeng Zhang, Yubing Pan, Cheng Zhao, Minghui Lv, Qing Jiang, Feng Wang, Yanan Li, Shuai Gao, Ke Shi","doi":"10.1080/09593330.2025.2478183","DOIUrl":"https://doi.org/10.1080/09593330.2025.2478183","url":null,"abstract":"<p><p>Microbial electrolysis cells (MECs) are promising for treating acidic mine drainage (AMD) containing high concentrations of sulfates and heavy metals. However, the performance of MEC cathodic biofilms is influenced not only by high heavy metals concentrations but also by hydrodynamic mixing conditions. Yet, there is a lack of precise assessment on the impact of hydrodynamic mixing conditions on MEC treating sulfate-laden wastewater under high heavy metal stress, and the defense mechanisms of MECs remain unclear. This study investigated the effects of different hydrodynamic conditions (EG, flow condition; CG, stationary condition) on the performance of MECs treating sulfate wastewater under high heavy metal stress, delving into microbial activity, community composition, electrochemical performance, and microbial defense capabilities against heavy metals. The results indicated that under heavy metal stress, microbial cells underwent severe deformation and death, with the assimilatory sulfate reduction pathway severely impaired, leading to a decline in MEC performance, and the reduction rate of CG group was finally reduced to 14.47%. In contrast, under flow conditions, the EG group exhibited increased extracellular polymeric substances (EPS) composition, enhanced biofilm community diversity, and elevated levels of copper resistance genes, significantly mitigating the inhibitory effects of Cu²⁺ on microorganisms, ultimately maintaining a performance of 47.18%. Ultimately, Cu²⁺ in the system was removed through bioprecipitation and biosorption, forming CuS and Cu(OH)₂. This work provides critical insights for scaling up MEC technology to address co-contamination challenges in acid mine drainage remediation, particularly for environments with hydrodynamic mixing conditions and elevated heavy metal concentrations.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-12"},"PeriodicalIF":2.2,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143663105","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":"Endophytic bacteria-assisted cadmium removal in sunflower stalks: towards safe biomass recycling.","authors":"Liwei Chen, Qiuguo Zhang, Wei Li, Yue Xie, Tingli Wang, Jian Liu","doi":"10.1080/09593330.2025.2478180","DOIUrl":"https://doi.org/10.1080/09593330.2025.2478180","url":null,"abstract":"<p><p>Cadmium (Cd) contamination in agricultural soils is one of the major threats to food safety and environmental health. In a phytoremediation program for the extraction of Cd by plants, one critical challenge is the management of harvested biomass because of its highly contaminant content. This study investigates the use of endophytic bacteria to assist in Cd removal from sunflower stalks, aiming to make the biomass safer for reuse as fertilizer. Sixteen endophyte strains were isolated from sunflower plants grown in Cd-contaminated soils, out of which two strains, J14 and J15, namely <i>Enterobacter roggenkampii</i> and <i>Kosakonia cowanii</i>, respectively, showed the most potential for Cd removal. Under the optimized conditions, 42.03% and 37.99% Cd removal efficiency could be achieved by J14 and J15, respectively. More than 50% of some specific forms of Cd (F2, F4, F5) in sunflower stalks can be reduced during extraction. Importantly, the treatment with endophytes lowered Cd in contaminated biomass without significant reductions in the major plant nutrients (nitrogen, phosphorus, and potassium), thus rendering it safe for its reuse as fertilizer. This study offers a novel perspective on biomass contamination in phytoremediation, suggesting a new environmentally friendly approach for the recycling of polluted plant material towards safer and more economic phytoremediation practices.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-14"},"PeriodicalIF":2.2,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143663103","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":"Resource recovery from MSW incineration residues through the 'Ash-by-Ash Treatment Method' (AATM): optimization of water and bottom ash contents.","authors":"Mitali Nag, Dania Labira, Takayuki Shimaoka","doi":"10.1080/09593330.2025.2478179","DOIUrl":"https://doi.org/10.1080/09593330.2025.2478179","url":null,"abstract":"<p><p>Fine-fraction of Municipal Solid Waste (MSW) incineration bottom ash (IBA) contains amorphous silica, known as pozzolan is one of the potential heavy metal stabilizers in MSW incineration fly ash (IFA) by forming the cementitious compounds of calcium silicate hydrates (C - S - H) and calcium aluminate hydrates (C-A-H). The technique can be called the 'Ash-by-Ash Treatment Method' (AATM). To optimize the AATM, effects of water (L/S ratios) and IBA amounts (IFA/IBA ratios) were examined in this study. IFA and IBA were provided by two distinct incineration plants; IBA was utilized at fractions <i>d</i> < 250μm because of its high reactive amorphous pozzolan. The testing involved mixing ashes at different L/S (ml/g) and IFA/IBA ratios, leaving the air dry at ambient temperature, afterward settling for periods of 4, 8, 16, 30, and 60 days. The results confirmed that various L/S (ml/g) ratios have no discernible influence on the immobilization of heavy metals. At 60 days, even a lowered moisture content could maintain more than 99% of Pb immobilization efficiency and 100% of Cr and Cu immobilization efficiency. In another experiment, using up to 30% of IBA with L/S (ml/g) ratios of 0.6 also demonstrated >99% of Pb immobilization. No discernible change has been observed between the different L/S (ml/g) and IFA/IBA. Consequently, increasing IBA and decreasing water could assist in optimizing AATM. The immobilization process involves carbonation and pozzolanic reactions, which are substantiated by the leaching solution's pH decrease, the formation of calcite, the appearance of multiple new minerals, and the cementitious products C-S-H gels.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-18"},"PeriodicalIF":2.2,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143663112","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":"Unveiling the adsorption mechanisms and key influencing factors of cyclic acetals on powdered activated carbon.","authors":"Qianxi Wu, Tianyang Zhang, Renjie Pan, Zhu Peng, Hengxuan Zhao, Jian Lu, Zhengyu Dong, Chao Zeng, Mohamed Gamal El-Din, Bin Xu","doi":"10.1080/09593330.2025.2478182","DOIUrl":"https://doi.org/10.1080/09593330.2025.2478182","url":null,"abstract":"<p><p>Cyclic acetals (CAs), such as 2-ethyl-5,5-dimethyl-1,3-dioxane (2-EDD) and 2-ethyl-4-methyl-1,3-dioxolane (2-EMD), are emerging odourants in drinking water, raising significant concerns due to their extremely low odour thresholds, high stability, and potential health risks. This study investigated 2-EDD and 2-EMD adsorption performance on six powdered activated carbons (PACs). The adsorption isotherms fitted well with Freundlich (<i>R</i>²= 0.907∼0.996) and Temkin models (<i>R</i>²= 0.874-0.997). The adsorption efficiency of 2-EDD (the Freundlich constant <i>K_F</i> = 0.0847-0.802) was higher than 2-EMD (<i>K_F</i> = 0.0435-0.239), because of its greater molecular mass and higher hydrophobicity. All PACs reached equilibrium in about 120 minutes, and the adsorption kinetics fitted better with the pseudo-second-order model (<i>R</i>²= 0.920∼0.997), indicating that chemical adsorption significantly contributed to CAs' adsorption. The adsorption rates for 2-EDD (k₂ = 0.123-1.235) were lower compared to 2-EMD (k₂ = 0.245-4.770). Results from correlation analysis revealed that average pore size, pore volume, and mesoporous fraction were the key PAC properties in controlling CAs' adsorption. Diffusion-chemisorption model, Weber and Morris intraparticle diffusion kinetic model, and Boyd kinetic model were employed to elucidate the adsorption mechanism. The results indicated that the two CAs were interacted mainly through chemical adsorption, with film diffusion serving as the step controlling the rate. PACs exhibited effective performance under neutral to slightly alkaline conditions, as well as in source water and tap water. Meanwhile, 20 mg·L^-1 PAC could reduce CAs' concentration from 40 ng·L^-1 to 5 ng·L^-1. This study provides a benchmark for selecting effective carbon to address odour issues caused by CAs.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-11"},"PeriodicalIF":2.2,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143656349","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":"Evaluation of biofilm carrier colonisation in a deammonification moving-bed biofilm reactor.","authors":"Mor Shental-Isaacs, Guy Horev, Carlos G Dosoretz","doi":"10.1080/09593330.2025.2475522","DOIUrl":"https://doi.org/10.1080/09593330.2025.2475522","url":null,"abstract":"<p><p>This study focused on the evaluation and characterisation of carrier colonisation of a deammonification moving-bed biofilm reactor (dMBBR) at a low carrier-inoculation ratio (≤5%v/v), applying multiple methodologies. The dMBBR (5 L working volume) was filled with Aqwise carriers (50%v/v filling ratio) and fed with synthetic feedstock. Carrier colonisation was differentially tracked using grey colour for new carriers and white colour for pre-colonised seed carriers. The reactor operated for 190 days at a nitrogen loading of 125-140 gN/m³/d. Multivariant heatmap analysis of the process parameters indicated stable deammonification performance from day 85 onwards albeit some occasional malfunctions occurred, with NH₄⁺ and total nitrogen removal rates amounting to 85% and 61%, respectively. Biofilm development on new carriers, evaluated by bulk density measurements via pycnometry, proved to be a reliable, simple, and non-destructive methodology. Anammox of genus <i>Candidatus Brocadia</i> and ammonia oxidising bacteria of genus <i>Nitrosomonas</i> were well established on the new carriers, in line with theoretical and empirical specific activity tests. This multi-parameter evaluation provides a broad insight into deammonification biomass development on the carriers and may assist in shortening the start-up period of dMBBRs.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-14"},"PeriodicalIF":2.2,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143656663","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":"Effects of tea polyphenols disinfectant on microbial communities and potential pathogenic bacteria in water.","authors":"Cuimin Feng, Shuaiqi Wang, Ting Wang, Tong Wei, Zexin Chen, Xueqing Jing","doi":"10.1080/09593330.2025.2478178","DOIUrl":"https://doi.org/10.1080/09593330.2025.2478178","url":null,"abstract":"<p><p>The structural and abundance changes in water disinfected by tea polyphenols were investigated in high-abundance microbial communities (HAMC), medium-abundance microbial communities (MAMC), and low-abundance microbial communities (LAMC), also included the interactions within and between these communities. The antibacterial effect of tea polyphenols was observed at concentrations of 20-300 mg/L. If the tea polyphenols concentration is greater than or equal to 200 mg/L, it can continue to inhibit the growth of bacteria, and keep the total number of bacteria in 48 hours no more than100 CFU/ml, and this reflected the continuity of tea polyphenols disinfectant in the pipe network. The relative abundance of some chlorine-resistant bacteria such as <i>Blastomonas</i>, <i>Sphingomonas</i> and <i>Pseudomonas</i> decreased significantly after disinfection with tea polyphenols, which indicates that tea polyphenols have the advantage of removing some chlorine-resistant bacteria. Samples of HAMC, MAMC and LAMC showed similar structure. Co-occurrence network analysis within microbial communities revealed the most complex interrelationships in HAMC. Co-occurrence network analysis between microbial communities showed that HAMC and MAMC were most closely related. In the co-occurrence network, 8 key bacteria genera were identified, in which 5 key genera belonged to medium-abundance and low-abundance. Potential pathogens were identified in the study and potential pathogens were <i>Aerococcus</i> and <i>Staphylococcus</i> were pointed out after tea polyphenols disinfection as the key potential pathogen genera by co-occurrence network analysis. The co-occurrence relationship between these key potential pathogens and other potential pathogens indicates that water quality safety can be controlled by the number of key potential pathogens.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-13"},"PeriodicalIF":2.2,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143614072","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":"Visible light-driven metal-free porphyrin assembly-activated peroxydisulfate for the degradation of organic pollutants.","authors":"Zhaoyang Guo, Zhimin Li, Shuang Li, Zeduan Zheng, Jinrong Lu","doi":"10.1080/09593330.2025.2473658","DOIUrl":"https://doi.org/10.1080/09593330.2025.2473658","url":null,"abstract":"<p><p>Advanced oxidation technologies that utilise sulfate radicals (·SO₄^-) hold significant potential for wastewater treatment applications. Employing photogenerated electrons of semiconductor to activate the persulfate system is possible to enhance the efficiency of charge separation in photocatalysts and improve the photocatalytic oxidation ability. This study aims to further enhance the efficiency of photogenerated charge separation of metal-free porphyrin supramolecular photocatalysts and to develop environmentally friendly catalysts for activating peroxydisulfate (PDS). Specifically, the performance of a visible-light-driven metal-free porphyrin aggregate-based photocatalytic system (CTAB-TCPP/PDS) for the degradation of phenol was investigated. The phenol degradation rate of the CTAB-TCPP/PDS system increased by 87% compared to that of pure TCPP catalyst. The separation efficiency of photogenerated carriers can be significantly improved by utilising the photogenerated electrons from porphyrin aggregates to activate PDS. Additionally, various reactive species, such as holes and sulfate radicals, can effectively work together to degrade phenol.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-9"},"PeriodicalIF":2.2,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143604369","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":"Freshwater algal species consortia exhibit optimal biomass and biodiesel production under calcium chloride and magnesium sulphate stress.","authors":"Reem M Alharbi","doi":"10.1080/09593330.2025.2474252","DOIUrl":"https://doi.org/10.1080/09593330.2025.2474252","url":null,"abstract":"<p><p>Microalgae have been pioneering microbial cell factories for sustainable bioenergy production and other high-value product extraction. The present study affirms using mixed algal species (MAS) as a consortium for escalated biomass yield and lipid production under different calcium chloride and magnesium sulphate concentrations toward biofuel production. Of the different concentrations of Ca and Mg concentrations tested, 75 mg/L of calcium and 125 mg/L of magnesium displayed maximal biomass yield, cell density, and biomass productivity. The optimization revealed 18 days of day-light incubation for enhanced biomass and biochemical production. Further, a higher lipid content of 24.55% was noticed at 0 mg/L Ca, while a maximum lipid content of 22-23.2% was observed from the MAS grown in 100 and 125 mg/L Mg concentrations. Regarding the biodiesel yield from MAS, 0 mg/L Ca showed a higher biodiesel yield of 68.45%, while 65.62-68.33% was obtained from 75 mg/L and 125 mg/L Mg concentrations. In addition, the biodiesel produced from the high Ca concentration showed higher unsaturated fatty acids of 55.13%, whereas biodiesel obtained from a higher Mg - amended consortium presented high saturated fatty acids of 53.12%. The present work will enable environmental scientists to combinatorial benefits for utilizing microalgal consortium for circular bionomy aspects and attaining sustainable development goals. Moreover, the present attempt aims to assess the microalgal consortium-based - biodiesel production in accomplishing Sustainable Development Goal - 7 (clean and affordable energy) as enlisted by the UNSDG 2030 agenda.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-13"},"PeriodicalIF":2.2,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143604362","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":"Functionalization of environmental-friendly biosorbent for high-performance removal of uranium from waste solution.","authors":"Ahmed H Orabi, Yasser M Abd El-Mageed, Hend M Salem, Nagwa I Falia, Mohamed S Atrees","doi":"10.1080/09593330.2025.2474257","DOIUrl":"https://doi.org/10.1080/09593330.2025.2474257","url":null,"abstract":"<p><p>The most secure method for the ecosystem is the chemical disposal of radioactive waste through adsorption, as uranium is a radioactive and hazardous environmental material that requires safe disposal. Herein, a new, highly efficient, cheap sorbent to remove it. A functionalized environmental-friendly biosorbent (moringa seed waste) was synthesized via a wet processing technique. Three new biosorbents (ACMOSW@Ox, ACMOSW@Ci, and ACMOSW@TBA) were yielded through reaction of moringa seed waste with oxalic, citric, and tributylamine, respectively. The synthesized three biosorbents were distinguished utilizing different techniques. The batch adsorption experiments shown that the three biosorbents had a strong ability to remove U (VI) in the following order: ACMOSW@Ox > ACMOSW@Ci > ACMOSW@TBA. The kinetics and isotherm of adsorption were accurately represented by the Langmuir and pseudo-second-order models, respectively. The findings indicate that the application of 0.1 g of ACMOSW@Ox under experimental conditions of pH 3, a temperature of 298 K, an initial U(VI) concentration of 100 mg/L, and a mixing duration of 90 minutes resulted in a notable removal efficiency of 98%. Reusing the sorbent for at least five or six cycles results in little degradation of its effectiveness. FTIR, ESEM-EDX, XRD, XPS, particle size, and zeta potential techniques were used to confirm uranium uptake by biosorbent. We also tested the produced biosorbent to see whether it could remove U (VI) from wastewater. In conclusion, the functionalized moringa seed waste was proven efficient, recyclable, and excellent as an alternative environmental-friendly adsorbent capable of uranium removal from contaminated water.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-20"},"PeriodicalIF":2.2,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143604363","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":"Growth performance of <i>Scenedesmus</i> sp. AQUAMEB-57<i>. Ankistrodesmus</i> sp. AQUAMEB-33, and <i>Synechococcaceae</i> AQUAMEB-32 cultivated at different light intensities.","authors":"Seyit Uguz, Gary Anderson, Ercan Simsek, Kıvılcım Ates, Mete Yilmaz, Erkan Yaslioglu, Hatice Delice, Yahya Ulusoy","doi":"10.1080/09593330.2025.2474254","DOIUrl":"https://doi.org/10.1080/09593330.2025.2474254","url":null,"abstract":"<p><p>Increasing air pollutants significantly contributes to climate change, requiring innovative mitigation strategies. Microalgae provide a promising solution by absorbing CO₂ and pollutants like nitrogen oxides (NO_x), sulfur oxides (SO_x), and ammonia from agricultural and industrial emissions, while also generating biomass for biofuels and animal feed. This study investigated the effects of light intensity on the growth and biochemical composition of <i>Scenedesmus</i> sp<i>.</i> AQUAMEB-57, <i>Ankistrodesmus</i> sp. AQUAMEB-33, and <i>Synechococcaceae</i> AQUAMEB-32 cultivated in photobioreactors under two batch and continuous culture conditions. <i>Scenedesmus sp</i>. reached the highest cell concentration (8 × 10⁶ cells ml^-1) at 200 µmol photons m^-2s^-1, while <i>Ankistrodesmus sp</i>. and <i>Synechococcaceae</i> peaked at 300 µmol photons m^-2s^-1. Dry biomass was highest for all species at 300 µmol photons m^-2s^-1<i>. Scendesmus sp</i> showed the highest protein content (15.6%) at a light intensity of 200 µmol photons m^-2s^-1, <i>Ankistrodesmus sp.</i> (17.2%) at 300 µmol photons m^-2s^-1, and <i>Synechococcaceae</i> (23.5%) at 100 µmol photons m^-2s^-1. Maximum carbohydrate content for <i>Scenedesmus sp.</i>, <i>Ankistrodesmus sp.</i>, and <i>Synechococcaceae</i> was 56.0%, 20.5%, and 18.4%, respectively, at 300 µmol photons m^-2s^-1. C16/C18 fatty acids significantly increased as light intensity was raised from 100 to 200 µmol photons m^-2s^-1. The findings show that light intensity impacts growth rates and biochemical profiles, varying by species and cultivation mode. Continuous systems yield higher biomass than batch systems, emphasizing the need for optimized strategies to enhance algal productivity. This research enhances understanding of microalgal growth dynamics, offering insights into optimizing conditions for improved biomass yield and supporting sustainable biofuel production and other valuable products.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-15"},"PeriodicalIF":2.2,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143604364","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}