Environmental Technology最新文献_第4页

Hydrochar-enhanced hydrogen production from cassava industrial waste residue using Enterobacter Aerogenes MTCC 2822. 利用产气肠杆菌MTCC 2822从木薯工业废渣中加氢制氢研究。

IF 2 4区环境科学与生态学

Environmental Technology Pub Date : 2025-08-01 Epub Date: 2025-03-27 DOI: 10.1080/09593330.2025.2480319

Subash Kannan Ravichandran, Blessy Silvaster, Selvakumar Rajendran, Jonathan W C Wong, Brindha Ganesan, Davidraj Johnravindar

{"title":"Hydrochar-enhanced hydrogen production from cassava industrial waste residue using Enterobacter Aerogenes MTCC 2822.","authors":"Subash Kannan Ravichandran, Blessy Silvaster, Selvakumar Rajendran, Jonathan W C Wong, Brindha Ganesan, Davidraj Johnravindar","doi":"10.1080/09593330.2025.2480319","DOIUrl":"10.1080/09593330.2025.2480319","url":null,"abstract":"Hydrogen gas (H2) is a promising renewable resource, and its production from organic waste has gained significant attention as an alternative to traditional energy sources. This study investigates hydrogen production from cassava industry waste residue (CWR) by incorporating hydrochar-supported nanoparticles (HSNPs) containing nickel (Ni) and iron (Fe) nanoparticles (NPs). Ni and Fe2O3 NPs were synthesised through the hydrothermal carbonisation (HTC) method and analyzed for their impact on biohydrogen production. The results indicated a maximum volumetric hydrogen production rate of 1013 mL/gCWR, with a substrate degradation efficiency of 80%. Addition of 0.5 mol Ni-Fe2O3 hydrochar was found to be optimal which enhanced the overall cumulative hydrogen production by 41.015%, and higher COD removal efficiency by 90% was obtained as compared to hydrochar without additives. The toxicity of NPs was assessed through bacterial viability, which examined various loading concentrations of NPs in a glucose medium. The findings revealed that supplementing hydrochar-supported NiO and Fe2O3 NPs within an optimal range for CWR can significantly improve hydrogen productivity. Additionally, HSNPs can enhance hydrogenase activity and electron transfer efficiency, which are beneficial to bio-H2 evolution. However, excessive HSNP addition may be toxic to microbes and further inhibit H2 production. This study presents an effective method for promoting the evolution rate of H2 gas.","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"3887-3903"},"PeriodicalIF":2.0,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143729415","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}

引用次数: 0

Efficient degradation of industrial slaughterhouse wastewater by electrooxidation process: impact of DSA anode materials on oxidation and operating costs. 电氧化法高效降解工业屠宰场废水：DSA阳极材料对氧化和运行成本的影响。

IF 2 4区环境科学与生态学

Environmental Technology Pub Date : 2025-08-01 Epub Date: 2025-03-27 DOI: 10.1080/09593330.2025.2482975

Nawid Ahmad Akhtar, Mehmet Kobya

{"title":"Efficient degradation of industrial slaughterhouse wastewater by electrooxidation process: impact of DSA anode materials on oxidation and operating costs.","authors":"Nawid Ahmad Akhtar, Mehmet Kobya","doi":"10.1080/09593330.2025.2482975","DOIUrl":"10.1080/09593330.2025.2482975","url":null,"abstract":"This research investigates the effect of the electrooxidation (EO) process on the treatment efficiency, discharge criteria, and water reuse or irrigation standards of industrial slaughterhouse wastewater (ISWW). The study was carried out on different anode materials such as (Ti/Pt-IrO2, Ti/RuO2-IrO2, Ti/RuO2, and Ti/IrO2-Ta2O5), current densities (50-150 A/m2), and reaction time (0-540 min). COD, TOC, and turbidity removal efficiency under optimum conditions (anode = Ti/Pt-IrO2, j = 150 A/m2, and t = 360 min) were calculated as 99.6, 96.1, and 99.9%, respectively. The energy consumption and total operating cost were calculated as 68.3 kWh/m3 (15.4 and 50.6 kWh/kg COD or TOC) and 2.40 $/m3 (0.62 and 2.02 $/kg COD or TOC), respectively. Furthermore, the results are compared together with existing published/reported discharge criteria for adequate environmental release in different jurisdictions worldwide. Additionally, a relationship has been established between the World Bank Group/United States Environmental Protection Agency (WBG/US EPA) water reuse or irrigation standards. At the end of the study, the biodegradability of ISWW after EO was assessed using the carbon oxidation state (COS) and average oxidation state (AOS) parameters, and kinetic modeling with heterogeneous kinetics was comprehensively evaluated. The findings of the study show that the EO process using the Ti/Pt-IrO2 anode is an efficient method for the ISWW treatment.","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"3997-4009"},"PeriodicalIF":2.0,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143729389","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}

引用次数: 0

Foliar application of microalgae extracts impacted the seed yield of white lupine (Lupinus albus). 叶面施用微藻提取物对白羽扇豆种子产量有影响。

IF 2 4区环境科学与生态学

Environmental Technology Pub Date : 2025-08-01 Epub Date: 2025-04-02 DOI: 10.1080/09593330.2025.2485361

Vinícius Cordeiro de Moraes, Pedro Maia Zeny, Lilyan Barbosa Ruivo, Marco Shizuo Owatari, Rafael Garcia Lopes, Luis Miguel Schiebelbein, Roberto Bianchini Derner, Silvana Ohse

{"title":"Foliar application of microalgae extracts impacted the seed yield of white lupine (Lupinus albus).","authors":"Vinícius Cordeiro de Moraes, Pedro Maia Zeny, Lilyan Barbosa Ruivo, Marco Shizuo Owatari, Rafael Garcia Lopes, Luis Miguel Schiebelbein, Roberto Bianchini Derner, Silvana Ohse","doi":"10.1080/09593330.2025.2485361","DOIUrl":"10.1080/09593330.2025.2485361","url":null,"abstract":"Algae are known for their rich nutrients, which can enhance productivity of agricultural crops, making them valuable biostimulants. However, the use of microalgae for this purpose is still in its early stages, and there have been no studies conducted on lupine crops in Brazil so far. This study aimed to investigate the impact of microalgae extracts on the growth and productivity of white lupine. The experiment included four different microalgae extracts (Limnospira platensis, Nannochloropsis oculata, Tetradesmus obliquus, and Chaetoceros muelleri), applied either once or twice, along with a control group. The results showed that there was no interaction between the number of applications and the type of microalgae extract applied via foliar application in white lupine crops. The microalgae extracts did not have a significant impact on the 100-grain weight and yield of white lupine crops. The average height of white lupine plants at harvest was 117.04 cm, regardless of the treatment. However, there was a significant increase (13.12%) in the number of seeds per pod of white lupine with a single application of microalgae extract, regardless of the specific extract used. The height of the white lupine plants was not affected by the treatments during both the vegetative and reproductive phases. Further research is needed to optimise the bioactive extraction process, identify metabolites with biostimulant potential in the extracts, and determine the most effective application method (soil, seed, or foliar), as well as the optimal timing and frequency of foliar applications based on the crop's phenological stages.","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"4111-4122"},"PeriodicalIF":2.0,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143771643","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}

引用次数: 0

Synthesis of metal-organic framework immobilized bromelain complex and its application in corn starch wastewater treatment. 金属-有机骨架固定化菠萝蛋白酶配合物的合成及其在玉米淀粉废水处理中的应用。

IF 2 4区环境科学与生态学

Environmental Technology Pub Date : 2025-08-01 Epub Date: 2025-05-05 DOI: 10.1080/09593330.2025.2499970

Yingyao Liu, Duanchao Cao, Yuna He, Gang Chen, Qinwen Wang

{"title":"Synthesis of metal-organic framework immobilized bromelain complex and its application in corn starch wastewater treatment.","authors":"Yingyao Liu, Duanchao Cao, Yuna He, Gang Chen, Qinwen Wang","doi":"10.1080/09593330.2025.2499970","DOIUrl":"10.1080/09593330.2025.2499970","url":null,"abstract":"Pineapple leaves and stems are often treated as agricultural waste during pineapple harvesting. Disposing of or incinerating pineapple leaves and stems contributes to environmental pollution and results in the waste of recyclable resources. Currently, a viable approach is to extract bromelain from pineapple leaves and stems. Bromelain exhibits broad applicability, capable of catalyzing the hydrolysis of numerous plant proteins, hence it can be effectively utilized in the treatment of wastewater with high protein content. In this study, bromelain isolated from pineapple leaves and stems was immobilized within a zeolitic imidazolate framework (ZIF-8) via a one-step co-precipitation method, synthesizing the bromelain@ZIF-8 complex. The results show that (1) the immobilization of bromelain did not alter the morphology or crystalline structure of ZIF-8, while the thermal stability of the enzyme was significantly enhanced; (2) when take bovine serum albumin and corn starch wastewater as substrates, the bromelain@ZIF-8 complex exhibited better performance in protein hydrolysis applications under the synergistic effect of bromelain and ZIF-8, demonstrating great potential in removing proteins from industrial wastewater; (3) when treating corn starch wastewater by coagulation, the optimal treatment effect of the wastewater was achieved by sequentially adding 300 ppm flocculant polyaluminum chloride (PAC), 5 ppm bromelain@ZIF-8 complex, and 667 ppm coagulant aid polyacrylamide (PAM), resulting in a COD reduction of 25.22%, and reductions in color and suspended solids by 97.80% and 90.84%, respectively. This work not only reduces the environmental pollution, but also provides a new possibility for the treatment of high plant protein wastewater.","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"4182-4191"},"PeriodicalIF":2.0,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143969740","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}

引用次数: 0

Removal of organic matter and ammonia nitrogen from contaminated water by combining hydrotalcites pretreatment and ultrafiltration. 水滑石预处理与超滤联合去除污染水中有机物和氨氮。

IF 2 4区环境科学与生态学

Environmental Technology Pub Date : 2025-08-01 Epub Date: 2025-05-18 DOI: 10.1080/09593330.2025.2499753

Fuchen Ban, Yuxin Wang, Shiyuan Yang

{"title":"Removal of organic matter and ammonia nitrogen from contaminated water by combining hydrotalcites pretreatment and ultrafiltration.","authors":"Fuchen Ban, Yuxin Wang, Shiyuan Yang","doi":"10.1080/09593330.2025.2499753","DOIUrl":"10.1080/09593330.2025.2499753","url":null,"abstract":"In this study, the combined process of hydrotalcite and ultrafiltration was investigated for the treatment of micro-polluted water samples. The study examined the impact of the combined process on the elimination of Total Organic Carbon (TOC) and ammonia nitrogen, varying the dosage of hydrotalcite, the duration of adsorption, and the volume of ultrafiltration backwash water. The experimental outcomes were subjected to analysis. Utilizing response surface methodology, the conditions for the removal of ammonia nitrogen were optimized through single-factor experiments. The results indicated that the interaction of the three factors had a significant impact on the removal of ammonia nitrogen, with the order of significance being: hydrotalcite dosage & adsorption time > adsorption time & backwash water volume > hydrotalcite dosage & backwash water volume. Upon administering an hydrotalcite dosage of 298.25 mg/L, maintaining an adsorption time of 50.49 minutes, and utilizing a backwash water volume of 153.42 L/h, the maximum removal rate of ammonia nitrogen achieved was 73.52%. Through the regeneration performance experiment, it is found that hydrotalcite has a good retention rate and can be reused. And under the prevailing conditions, the combined treatment process achieved the following pollutant removal rates: turbidity reduction of 97.60%, ammonia nitrogen removal of 71.25%, Cr (VI) elimination of 93.41%, and Mn (II) removal amounting to 33.33%. This study offers theoretical support for the future application of ultrafiltration membranes.","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"4171-4181"},"PeriodicalIF":2.0,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144093241","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}

引用次数: 0

Effect of biochar derived at different pyrolysis temperatures on heavy metal speciation during sewage sludge anaerobic digestion process. 不同热解温度下生物炭对污泥厌氧消化过程中重金属形态的影响

IF 2 4区环境科学与生态学

Environmental Technology Pub Date : 2025-07-30 DOI: 10.1080/09593330.2025.2526184

Wen Zhang, Chunsheng Qiu, Ruoxin Li, Kehan Song, Nannan Liu, Li Qi, Xiumei Jiao, Xu Chen, Yaping Zhang

{"title":"Effect of biochar derived at different pyrolysis temperatures on heavy metal speciation during sewage sludge anaerobic digestion process.","authors":"Wen Zhang, Chunsheng Qiu, Ruoxin Li, Kehan Song, Nannan Liu, Li Qi, Xiumei Jiao, Xu Chen, Yaping Zhang","doi":"10.1080/09593330.2025.2526184","DOIUrl":"https://doi.org/10.1080/09593330.2025.2526184","url":null,"abstract":"The effects of biochar prepared at different pyrolysis temperatures (300-800 ℃) on the anaerobic digestion efficiency, chemical speciation distribution, and environmental risks of heavy metals in sewage sludge were investigated in this study. The results showed that the addition of biochar could keep the pH of the anaerobic digestion system stable at 7.43-7.77, and alleviate ammonia nitrogen accumulation. The volume of cumulative methane production increased by 14.31-151.32% after the addition of biochar, and biochar prepared at 600 ℃ showed the best efficiency in promoting methane production. Meanwhile, the heavy metal content in the anaerobic digested sludge increased by 15.47-432.71% compared with the control group. However, the chemical speciation of heavy metals transformed from unstable forms to stable forms. The Nemerow pollution indexes (NPI) of heavy metals in the digested sludge increased to different degrees, but the NPIs were all less than 1, indicating a low risk level. The potential ecological risk indexes (RI) of heavy metals in the digested sludge with biochar addition decreased significantly, and the RI value of the heavy metals of the experimental group with the addition of biochar prepared at 600 ℃ was reduced by 43.36%.","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-10"},"PeriodicalIF":2.0,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144752777","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}

引用次数: 0

Greywater treatment using constructed wetlands modified with biochar and ceramic media. 生物炭和陶瓷改性人工湿地处理灰水。

IF 2 4区环境科学与生态学

Environmental Technology Pub Date : 2025-07-29 DOI: 10.1080/09593330.2025.2530790

Rana A Aylan, Dunya A H Al-Abbawy, Dina A Yaseen

{"title":"Greywater treatment using constructed wetlands modified with biochar and ceramic media.","authors":"Rana A Aylan, Dunya A H Al-Abbawy, Dina A Yaseen","doi":"10.1080/09593330.2025.2530790","DOIUrl":"https://doi.org/10.1080/09593330.2025.2530790","url":null,"abstract":"Constructed wetlands (CWs) offer an affordable and sustainable solution for decentralized wastewater treatment. This study assessed horizontal subsurface flow CWs (HSSFCWs) supplemented with charcoal and ceramic media for greywater treatment in Basra, Iraq. This novel approach demonstrates significant advancements in the removal efficiency of contaminants from greywater. Four pilot-scale wetlands were run for 182 days. Bacopa monnieri was planted in the wetlands. Regular sampling of influent and effluent analyzed organics, nutrients, and heavy metals. Biochar significantly improved the removal of chemical oxygen demand (COD), biochemical oxygen demand (BOD5), nitrate (NO₃⁻), orthophosphate (PO₄3⁻), ammonia (NH₃), lead (Pb), zinc (Zn) and cadmium (Cd), while ceramic media enhanced total suspended solids (TSS) and total dissolved solids (TDS) removal. The combined biochar-ceramic wetland showed the highest reduction in calcium (Ca), and magnesium (Mg). Plant growth was unaffected by amendments. The treated greywater met irrigation reuse standards, highlighting the efficacy of these amendments in improving greywater quality. Biochar and ceramic media CWs exhibited superior pollutant removal compared to the control, with biochar achieving removal efficiencies of 75.60% for COD, 22.61% for NO₃-N, 90.37% for PO4-P Ceramic media recorded the highest removal of TSS (66.99%) and TDS (50.50%). The mixed media wetland achieved the highest removal of BOD₅ (54.96%) and hardness ions. The study concludes that biochar and ceramic media are cost-effective amendments that enhance CWs for greywater treatment, supporting sustainable water reuse in small communities. These findings support the implementation of enhanced CWs for improving greywater quality and meeting irrigation guidelines.","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-25"},"PeriodicalIF":2.0,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144741722","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}

引用次数: 0

Catalytic steam gasification of food waste with food waste ash supported Nickel catalyst: conventional vs in-situ two-stage approach. 食物垃圾灰负载镍催化剂催化蒸汽气化：常规与原位两阶段方法。

IF 2.2 4区环境科学与生态学

Environmental Technology Pub Date : 2025-07-25 DOI: 10.1080/09593330.2025.2536754

Aayush Raizada, Sanjeev Yadav

{"title":"Catalytic steam gasification of food waste with food waste ash supported Nickel catalyst: conventional vs in-situ two-stage approach.","authors":"Aayush Raizada, Sanjeev Yadav","doi":"10.1080/09593330.2025.2536754","DOIUrl":"https://doi.org/10.1080/09593330.2025.2536754","url":null,"abstract":"In this study, first, a novel Ni catalyst was developed where 5% nickel was loaded on food waste ash and thereafter, it was used in steam gasification of food waste via two different processes: conventional overlapping process (COP) with simultaneous pyrolysis and gasification, and in-situ two-stage process (ITP) with consecutive pyrolysis and gasification. The temperature for the pyrolysis and gasification stage in ITP was maintained at around 850 °C. Both the processes (COP and ITP) were also conducted at the same temperature of 850°C with a steam flow rate of 0.73 mL/min for 100 g of the food waste sample. The processes were conducted in a downdraft gasifier with variations in catalyst content. The catalyst content in the feed-catalyst mixture was varied from 0 to 50 g, and results indicated that the use of a 50 g catalyst during COP increased the syngas yield quite significantly (∼70%). However, the results showed that the Ni catalyst did not have much effect on syngas yield from ITP, though it increased the hydrogen fraction in syngas (∼80%). The highest hydrogen fraction in syngas from COP and ITP was found to be 71.74% and 66.53% respectively. Consequently, the highest hydrogen yield of 1.3 m3/kg was obtained from COP for 50 g of catalyst in a feed-catalyst mixture. Furthermore, performance parameters such as high heating value (HHV), carbon conversion efficiency (CCE), and cold gas efficiency (CGE) were determined for performance analysis of the Ni-based catalyst in conventional and in-situ steam gasification.","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-12"},"PeriodicalIF":2.2,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144706869","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}

引用次数: 0

Optimization of the bio-H₂ and lactate production from vinasse and molasses: an experimental approach for the bioenergy development in Brazil. 从酒糟和糖蜜中优化生物h2和乳酸的生产：巴西生物能源发展的实验方法。

IF 2.2 4区环境科学与生态学

Environmental Technology Pub Date : 2025-07-25 DOI: 10.1080/09593330.2025.2532194

Alexandre Rodrigues Ribeiro, José Arnaldo de Freitas Junior, Kauanna Uyara Devens, Isabel Kimiko Sakamoto, Maria Bernadete Amâncio Varesche, Edson Luiz Silva

{"title":"Optimization of the bio-H2 and lactate production from vinasse and molasses: an experimental approach for the bioenergy development in Brazil.","authors":"Alexandre Rodrigues Ribeiro, José Arnaldo de Freitas Junior, Kauanna Uyara Devens, Isabel Kimiko Sakamoto, Maria Bernadete Amâncio Varesche, Edson Luiz Silva","doi":"10.1080/09593330.2025.2532194","DOIUrl":"https://doi.org/10.1080/09593330.2025.2532194","url":null,"abstract":"This study investigates the efficiency of hydrogen (H2) and lactate (HLa) generation in the co-fermentation of sugarcane vinasse and molasses, aiming to optimize operational strategies through central composite design (CCD) and response surface methodology (RSM). The tests were conducted in 1 L Duran® flasks, with a working volume of 500 mL, under thermophilic conditions (55°C) and pH 7.0. Nine conditions were evaluated by varying co-substrate concentrations (3.9 - 11.1 g COD.L-1) and vinasse proportions (7.6 - 92.4%), identifying the most favourable conditions for H2 and HLa production. High H2 potential (up to 1275 mL.L-1) was observed with 7.5 g COD.L-1 of co-substrates and 7.6% vinasse, mainly attributed to Clostridium. Adding molasses maximized H2 generation, while higher vinasse proportions favoured lactobacilli, increasing HLa concentration and reducing H2. Replicability was ensured, validating tests with high H2 generation and 75% similar results. The tests showed discrepancies in bacterial genus prevalence: the condition with 11.1 g COD.L-1 of co-substrates and 50% vinasse favoured HLa producers (Sporolactobacillus, Lactobacillus, Bacillus), while the condition with only 7.5 g COD.L-1 of co-substrates and 7.6% vinasse favoured H2 producers (Clostridium, Thermoanaerobacterium, Pseudomonas). These findings guide future feeding strategies to optimize bioproduct yield, favouring the generation of target bioproducts and ensuring a holistic view of vinasse and molasses utilization for fermentative H2 biogas production.","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-18"},"PeriodicalIF":2.2,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144714984","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}

引用次数: 0

Synergistic removal of ammonia nitrogen and thallium using sodium sulphide precipitation and autotrophic nitrifying granular sludge biosorption. 硫化钠沉淀与自养硝化颗粒污泥生物吸附协同去除氨氮和铊。

IF 2.2 4区环境科学与生态学

Environmental Technology Pub Date : 2025-07-22 DOI: 10.1080/09593330.2025.2533441

Lingcong Zeng, Jinqiang Guan, Shengping Wen, Shijia Gui, Liujia Wang, Shaoqin Li, Xianxiong Cheng, Yuanyuan Cheng, Bei Long

{"title":"Synergistic removal of ammonia nitrogen and thallium using sodium sulphide precipitation and autotrophic nitrifying granular sludge biosorption.","authors":"Lingcong Zeng, Jinqiang Guan, Shengping Wen, Shijia Gui, Liujia Wang, Shaoqin Li, Xianxiong Cheng, Yuanyuan Cheng, Bei Long","doi":"10.1080/09593330.2025.2533441","DOIUrl":"https://doi.org/10.1080/09593330.2025.2533441","url":null,"abstract":"This study developed a novel hybrid process integrating sodium sulphide (Na2S) precipitation with autotrophic nitrifying granular sludge (ANGS) biosorption for the efficient removal of thallium (Tl) and ammonium nitrogen (NH4+-N) from ionic rare earth mining wastewater in South Jiangxi. Single-factor experiments and orthogonal optimization determined the optimal Na2S precipitation conditions (pH 10, 0.3 mL Na2S dosage, 9 min reaction time), achieving removal efficiencies of 94.47 ± 0.18% for Tl and 55.71 ± 1.42% for NH4+-N. Subsequent ANGS biosorption further improved total removal efficiencies to 99.59 ± 0.36% for Tl and 74.15 ± 1.43% for NH4+-N, with final effluent concentrations of 0.62 ± 0.54 μg/L Tl and 12.28 ± 0.68 mg/L NH4+-N, complying with discharge standards (5 μg/L Tl, 15 mg/L NH4+-N). X-ray photoelectron spectroscopy (XPS) analysis indicated that Tl removal was primarily mediated by thallium sulphide (Tl2S) precipitation, while ANGS contributed to immobilization via functional group complexation and intracellular adsorption. This synergistic chemical-biological approach demonstrates high efficiency, cost-effectiveness, and operational simplicity, offering a promising solution for tailwater treatment in ionic rare earth mining.","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-9"},"PeriodicalIF":2.2,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144689682","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}

引用次数: 0