Environmental Technology & Innovation最新文献

{"title":"Waste to wastewater treatment: Graphene quantum dots embedded poly(ethylene terephthalate) membranes for efficient phenol removal","authors":"Muhammad Kashif Raza ,&nbsp;Jisha Kuttiani Ali ,&nbsp;Dinesh Shetty ,&nbsp;Emad Alhseinat","doi":"10.1016/j.eti.2025.104163","DOIUrl":"10.1016/j.eti.2025.104163","url":null,"abstract":"<div><div>Efficient waste management strategies are essential for addressing environmental degradation and advancing sustainable development. Utilizing waste materials in wastewater treatment presents a promising avenue toward this goal. This study investigates the use of waste carton paper and waste plastic bottles in composite membranes for treating wastewater containing phenol as a contaminant. It introduces a unique approach by utilizing waste carton paper as a bio-source for the synthesis of graphene quantum dots (GQDs) and incorporating them as nanofillers in polyethylene terephthalate (PET) membranes derived from recycled plastic bottles. Furthermore, this study addresses the performance and stability of GQDs-PET membranes for smaller dissolvable organics such as phenol in semi-pilot UF systems. An array of characterizations was performed to confirm the successful application of waste carton paper as a bio source for synthesizing GQDs and to study their effect on the PET membrane structure and properties. The pore size, porosity and wetting properties of the GQDs-PET membranes could be flexibly modulated by regulating the contents of the GQDs. The performance stability of fabricated membranes was evaluated using a continuous operating semi-pilot scale cross-flow ultrafiltration (UF) setup. The optimal GQDs-PET membrane showed a higher water flux (24 L/m².hr.bar) than the pristine PET membrane (9.9 L/m².hr.bar) and demonstrated enhanced removal performance for phenol, ∼ 94 %, under alkaline feed conditions (pH 9.5) for more than 4 h. The stable phenol removal performance of the GQDs-PET membrane for a longer time can be attributed to the electrostatic repulsions between the membrane surface and phenoxide ion at a higher pH induced by GQDs in the PET membrane structure. These results revealed that the as-prepared GQDs-PET composite membranes possessed great potential for actual wastewater advanced treatment and purification. Additionally, this work supports sustainable development and circular economy principles by repurposing waste plastic bottles and carton paper for efficient wastewater treatment applications.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104163"},"PeriodicalIF":6.7,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of vermiculite on in-situ super-stable mineralization and amelioration on sodic soil","authors":"Ruifa Chai ,&nbsp;Xinyuan Sun ,&nbsp;Sai An ,&nbsp;Tong Lin ,&nbsp;Haoran Wang ,&nbsp;Wei Chen ,&nbsp;Yu-Fei Song","doi":"10.1016/j.eti.2025.104156","DOIUrl":"10.1016/j.eti.2025.104156","url":null,"abstract":"<div><div>As a non-traditional cultivated land resource that can be reformed, sodic soil after amelioration can be effectively utilized to alleviate the food crisis. It is crucial to develop a new strategy that is efficient, cost-effective, and environmentally friendly for sodic soil remediation. Vermiculite features a high cation exchange capacity and porous structure. By adding Mg²⁺-intercalated vermiculite (VMT) and Al₂(SO₄)₃ into the sodic soil, detailed <em>quasi-in-situ</em> X-ray diffraction and transmission electron microscope demonstrated the mineralization process. The free OH^–, CO₃^2– and Cl^– can be <em>in-situ</em> super-stable mineralized into MgAl-layered double hydroxide (MgAl-LDH). The CO₃^2– and Cl^– were confined in the interlayer of MgAl-LDH, while OH^– reacted with Mg²⁺ and Al³⁺ to form the laminate of MgAl-LDH. At the same time, due to slow release of Mg²⁺ from VMT, the cationic vacancy can be formed, which can be filled by large amounts of soluble Na⁺ in sodic soil in order to balance the charge. Sodic soil amelioration experiments illustrated that after remediating sodic soil with 2.0 wt% (weight percentage) VMT and Al₂(SO₄)₃ for 150 days, the soil pH decreased from 10.18 to 7.47, while the contents of soluble Na⁺ and CO₃^2– reduced significantly. Moreover, seedling emergence rate of corn and cabbage plants after application of VMT and Al₂(SO₄)₃ of sodic soil increased from 6.3% to 87.5% and 2.5% to 84.1%, respectively. Compared to traditional methods, this method reduced water usage and offered advantages including high mineralization capacity, excellent stability, and fast rate. This work provides deep insight into <em>in-situ</em> super-stable mineralization for sodic soil amelioration using VMT.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104156"},"PeriodicalIF":6.7,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Technological innovations in urbanization and land surface temperature analysis: A remote sensing and machine learning case study of Delhi","authors":"Hoang Thi Hang ,&nbsp;Mohammed J. Alshayeb","doi":"10.1016/j.eti.2025.104164","DOIUrl":"10.1016/j.eti.2025.104164","url":null,"abstract":"<div><div>The rapid urbanization of Delhi has significantly transformed its Land Use and Land Cover (LULC), leading to profound alterations in Land Surface Temperature (LST) and exacerbating environmental challenges. Therefore, this study integrates multi-temporal Landsat imagery, advanced machine learning techniques, and landscape fragmentation indices to assess the impact of urban expansion on LST from 2001 to 2021. LULC classification was conducted using the Random Forest algorithm, achieving high classification accuracy. Landscape metrics such as Number of Patches (NP), Largest Patch Index (LPI), Mean Patch Area (MPA), Patch Density (PD), Landscape Shape Index (LSI), and Fractal Dimension (FD) were computed to quantify urbanization trends. The mono-window algorithm was used for LST retrieval, and a spatial regression framework incorporating Spearman’s correlation and multivariate regression models was applied to establish statistical relationships between urbanization metrics and temperature variations. Results indicate a 50 % increase in built-up area, accompanied by an 81 % reduction in open land and a 15 % decline in cropland over two decades. LST exhibited a substantial rise, with the mean temperature in built-up regions increasing from 36.58 °C in 2001 to 41.81 °C in 2021, and peak temperatures reaching 51.60 °C, highlighting the intensification of the urban heat island (UHI) effect. Regression analysis revealed a strong negative correlation between LPI and LST (R² = 0.99), indicating that fragmented urban structures contribute to higher temperatures. Conversely, LSI and FD showed positive correlations with LST, confirming that irregular and dispersed urban growth patterns exacerbate thermal stress. These findings underscore the need for sustainable urban planning, emphasizing compact city development, green infrastructure, and water body conservation to mitigate UHI effects.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104164"},"PeriodicalIF":6.7,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integrated process design, techno-economic and environmental analysis of chokeberry pomace biorefineries: Phenolic compounds extraction with ethanol or energy production?","authors":"Adrián Agraso-Otero ,&nbsp;Ricardo Rebolledo-Leiva ,&nbsp;Eduardo Entrena-Barbero ,&nbsp;Sara González-García","doi":"10.1016/j.eti.2025.104165","DOIUrl":"10.1016/j.eti.2025.104165","url":null,"abstract":"<div><div>Learning how to transform by-products or waste from the food industry instead of sending them directly to landfill is key to reducing food waste and obtaining new value-added products from them<strong>.</strong> This study carries out the environmental and economic assessment of the valorisation of chokeberry pomace for the extraction of phenolic compounds in a multi-product and circular biorefinery. For this purpose, two scenarios were analysed: scenario A, the remaining part of the pomace is used to obtain bioethanol and a lignin-rich stream; and scenario B, it is used for bioenergy production. The Life Cycle Assessment methodology is used to determine the environmental critical points, following a cradle-to-gate approach and considering impact categories such as Global Warming, Freshwater Eutrophication or Fossil Resource Scarcity, among others. The results show that scenario B performs better in all the impact categories analysed compared to scenario A. In both cases the main hotspot is the generation of the steam needed in the biorefinery, followed by the emissions in the agricultural stage and the demand for chemicals in the plant. Furthermore, this document presents a techno-economic analysis to assess the economic feasibility of both scenarios and a sensitivity analysis to determine the profitability factors of the platform, considering the total capital investment, operating costs and indicators such as Net Present Value or Internal Rate of Return. The results show that the scenario analysed is not profitable at any of the scales studied, requiring to optimise the production yield or a reduction in the plant's operating costs.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104165"},"PeriodicalIF":6.7,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The evolution and configuration mechanism of spatial correlation network in China's innovation ecosystem","authors":"Bo Wen ,&nbsp;Fei Liu","doi":"10.1016/j.eti.2025.104157","DOIUrl":"10.1016/j.eti.2025.104157","url":null,"abstract":"<div><div>Clarifying the spatial correlation network of the innovation ecosystem is essential for promoting balanced regional economic development and social prosperity. Based on data from 31 Chinese provinces between 2017 and 2022, this study employs methods such as game-theory-based combined weighting, the modified gravitational model, social network analysis, and fuzzy set qualitative comparative analysis to reveal the structural characteristics, evolutionary process, and configurational mechanism of China's innovation ecosystem. Key findings include: (1)Temporal Evolution: The development level of China's innovation ecosystem has significantly improved, with connections within the spatial correlation network emerging and strengthening over time. Jiangsu is identified as the most influential province. (2)Spatial Correlation: Eastern coastal provinces like Jiangsu, Shandong, and Zhejiang exhibit the strongest spatial correlations. In contrast, remote provinces such as Heilongjiang, Ningxia, and Hainan remain at the periphery, resulting in an \"east strong, west weak\" trend. (3)Regional Clusters: The regions are divided into two-way spillover clusters: one mainly composed of eastern and central provinces, and another consisting of North China provinces. These clusters show close internal exchange activities. (4)Influencing Factors: Geographical proximity, differences in innovation achievements, and enterprise vitality significantly impact the formation of the spatial correlation network. (5)Development Paths: The development paths of the innovation ecosystem can be categorized into a comprehensive-driven type \"enterprise innovation vitality - innovation achievements - international resources\" and a talent-driven type \"enterprise innovation vitality - higher education\". This study provides valuable insights into the structure, evolution, and influencing factors of China's innovation ecosystem, offering references for enhancing regional innovation capabilities and promoting balanced economic development.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104157"},"PeriodicalIF":6.7,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143696944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Substitution of chemical fertilizer by biogas slurry maintain wheat yields by regulating soil properties and microbiomes","authors":"Zhixiang Han ,&nbsp;Tianyu Zheng ,&nbsp;Wenkang Yan ,&nbsp;Christopher Rensing ,&nbsp;Houzhang Wu ,&nbsp;Wenge Wu ,&nbsp;Hongmiao Wu","doi":"10.1016/j.eti.2025.104161","DOIUrl":"10.1016/j.eti.2025.104161","url":null,"abstract":"<div><div>At present, there is a lack of refined management for biogas slurry after toilet reconstruction, making it difficult to achieve safe treatment and resource utilization of biogas slurry. Utilizing biogas slurry instead of chemical fertilizers is able to significantly mitigate these issues. We established five fertilization treatments to investigate the impact of biogas slurry substitution on wheat growth, soil properties, and soil microbiomes in field experiments with varying proportions of biogas slurry. Utilizing small amounts of biogas slurry as a replacement for chemical fertilizers was able to maintain soil nutrient levels while sustaining wheat yield (from 2766.76 kg/hm² to 2973.13 kg/hm²), stabilize urease and catalase activities, and improve microbial communities. Additionally, using a minor amount of biogas slurry as a substitute for fertilizer resulted in an increase in the population of potentially beneficial bacteria and a decrease in the presence of potential fungal pathogens. Random forest analysis showed that the potentially beneficial bacteria (<em>Stenotrophomonas</em>, <em>Streptomyces</em>, <em>Arenimonas</em>), potentially fungal pathogens (<em>Alternaria, Lectera</em>, <em>Fusarium</em>), and consumer protists (<em>Colpoda</em>, <em>Paracercomonas</em>, <em>Sandona</em>) are the dominant predictors of wheat yields. Structural equation modelling showed that the replacement of chemical fertilizers by biogas slurry directly and indirectly sustained crop yield by altering soil characteristics and the microbial community. Our results showed that replacing 20 % of fertilizer with biogas slurry was concurrently able to maintain crop productivity while safeguarding the environment. These results improve our comprehension of the impact of various biogas slurry substitutes and hold significant theoretical importance for advancing the utilization of biogas slurry in the future.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104161"},"PeriodicalIF":6.7,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143680143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigating post-remediation management strategies for contaminated sites based on residual pollutant migration risks","authors":"Dandan Chen ,&nbsp;Tingting Fang ,&nbsp;Zhuo Zhang ,&nbsp;Yan Li ,&nbsp;Xiaoyang Liu ,&nbsp;Haolong Hu ,&nbsp;Ruixue Miao ,&nbsp;Guanlin Guo","doi":"10.1016/j.eti.2025.104153","DOIUrl":"10.1016/j.eti.2025.104153","url":null,"abstract":"<div><div>Post-remediation management plays a crucial role in risk control for contaminated sites, ensuring environmental safety and facilitating site redevelopment. In this study, we assessed the regulatory status of 469 post-remediation sites, analyzing factors such as spatio-temporal distribution, residual pollutants, planned land use, and regulatory measures. Our findings revealed that current post-remediation management often exhibits a coexistence of insufficient and excessive regulatory oversight. To address these issues, we propose a risk classification framework aimed at refining management strategies and improving resource utilization efficiency. The classification system integrates precedence chart and fuzzy evaluation methods, categorizing the sites into three levels (Level I, II, and III), each corresponding to different treatment measures. Five typical sites were selected to validate the classification method, and the results confirmed its stability and scientific basis. The method was then applied to 104 post-remediation sites, where the classification revealed that 62.5 % of the sites were Level III, 15.4 % were Level II, and 22.1 % were Level I. Notably, the application of this method could simplify regulatory measures for 45.24 % of the sites, as some could shift to institutional control rather than requiring long-term monitoring combined with institutional control. The approach developed in this study provides a critical safeguard for the safe reuse of contaminated land, offers valuable insights for the effective development of post-remediation management, and accelerates the establishment of a post-remediation management system tailored to regional administrative conditions.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104153"},"PeriodicalIF":6.7,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143680141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The optimization of the multi-component organic wastes in mixed aerobic composting ratio based on antibiotic resistance gene reduction","authors":"Yan Yang ,&nbsp;Hongda Wen ,&nbsp;Shuangshuang Ma ,&nbsp;Jingtao Ding ,&nbsp;Haibin Zhou ,&nbsp;Yujun Shen ,&nbsp;Hongsheng Cheng ,&nbsp;Huihui Wang ,&nbsp;Jian Wang ,&nbsp;Yiman Jia ,&nbsp;Dengmei Wei","doi":"10.1016/j.eti.2025.104160","DOIUrl":"10.1016/j.eti.2025.104160","url":null,"abstract":"<div><div>In recent years, the co-processing of agricultural and rural domestic waste for composting has emerged as a primary approach to promote resource recycling. However, the presence of antibiotics and other harmful chemicals in the raw materials can induce the generation of antibiotic resistance genes (ARGs) during the composting process, thereby triggering multiple potential risks, including environmental and ecological risks and human health risks. Currently, the production patterns of ARGs in the co-processing of multiple raw materials remain unclear, and research on reduction technologies is also inadequate. Therefore, this study aimed to develop a multi-material ratio scheme for achieving high compost maturity and effective ARG reduction. Aerobic composting experiments used varying ratios of four agricultural and rural organic wastes with a simple centroid design. The results demonstrated that special cubic response models for E4/E6 and the total reduction rates of four ARG types were successfully fitted. The optimal ratios were 40.5 % kitchen waste, 11.5 % pig manure, 28 % human feces, and 20 % wheat straw. Under these optimal conditions, the total reduction rates of ARGs increased by 0.31 %–19.64 %. These findings provide valuable theoretical support for enhancing ARG removal through mixed composting.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"39 ","pages":"Article 104160"},"PeriodicalIF":6.7,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143918117","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}

{"title":"Green strategies for chromium detoxification in tannery effluents: Adsorption and bioconversion with Portieria hornemannii","authors":"Manoj Sekaran,&nbsp;Kalaivani Thiagarajan","doi":"10.1016/j.eti.2025.104151","DOIUrl":"10.1016/j.eti.2025.104151","url":null,"abstract":"<div><div>Hexavalent chromium (Cr (VI)) is a toxic heavy metal contaminant that poses significant risks to living organisms. Notably, the red algae <em>Portieria hornemannii</em> has demonstrated the ability to adsorb and reduce chromium in aqueous environments. This study focuses on the effective on-site adsorption and bioconversion of Cr (VI) to Cr (III) using organized dead algal biomass enriched with active phytochemicals. The biomass's structural characteristics, surface morphology, functional groups, elemental composition, surface area, and porosity were thoroughly analyzed. Physiochemical parameters were optimized to enhance adsorption efficiency. Various adsorption isotherm models, including Langmuir, Freundlich, and Temkin, and kinetic models (pseudo-first-order and pseudo-second-order) were employed to analyze the adsorption process. The algal biosorbent achieved a maximum removal efficiency of 96.4 % at pH 2.0, with an adsorbate concentration of 300 ppm, an adsorbent dosage of 6 g/L, a temperature of 40 °C, and a contact time of 200 minutes. This study also investigated chromium levels in water released from chrome-tanning processes at tanneries and employed an optimized algal remediation technique. The evaluation of phytotoxic effects and growth metrics for <em>Vigna mungo</em> in the treated tannery water indicated a decrease in phytotoxicity, dropping from 80 % to 35 %. This research highlights the potential of utilizing dead algal biosorbents as an innovative and eco-friendly method for continuous industrial and environmental monitoring to protect groundwater resources.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104151"},"PeriodicalIF":6.7,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143680137","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Comparative phycoremediation study of aquaculture wastewater treatment by Chlorella sp. immobilized in different hybrid-alginate matrices","authors":"Akrm Mohamed Allzrag ,&nbsp;Japareng Lalung ,&nbsp;Noor Khalidah Abdul Hamid ,&nbsp;Jebrel Abdeljawad Rashed ,&nbsp;Rizwana Kausar ,&nbsp;Mohd Asyraf Kassim","doi":"10.1016/j.eti.2025.104158","DOIUrl":"10.1016/j.eti.2025.104158","url":null,"abstract":"<div><div>The management of aquaculture wastewater presents notable environmental challenges, requiring efficient remediation techniques. This study explores the use of naturally derived immobilization materials (starch, cellulose, and bacterial cellulose) for microalgal-based phycoremediation, by utilising immobilized <em>Chlorella sp.</em> and offers an eco-friendly alternative to conventional synthetic matrices. The study aimed to evaluate the best immobilized carrier, and to assess the effectiveness of immobilized microalgae in removing nutrients such as chemical oxygen demand (COD), biological oxygen demand (BOD), and total nitrogen (TN) from aquaculture, along with biomass and lipid productivity. In this study, the phycoremediation using microalgae immobilized with different carrier including starch, cellulose and bacterial cellulose were evaluated within 12 days treatment. The results indicated that <em>Chlorella sp.</em> immobilized in starch beads demonstrated higher phycoremediation efficiency by reducing the level of COD from 96 to 10.25 (mg/L), and BOD from 24 to 3.4 (mg/L), and TN level from 43 to 4 (mg/L). Cellulose beads also showed the highest lipid content (26.76 %). While bacterial-cellulose carrier showed higher biomass production at 39.38 mg/L and lipid productivity 38.33 mg/L/day This suggests that immobilized <em>Chlorella sp.</em> in bacterial-cellulose beads can effectively treat aquaculture wastewater and biofuel production. This study makes a significant contribution to the field of environmental biotechnology by providing a detailed analysis of the utilization of immobilized microalgae for sustainable waste management in aquaculture systems.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"38 ","pages":"Article 104158"},"PeriodicalIF":6.7,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143680135","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}