Bioresource Technology Reports最新文献

{"title":"Influence of macrophytes, aeration, and seasons on dewatering mechanisms in sludge treatment wetlands: A first study in humid subtropical climate of India","authors":"Jaydip Jadav,&nbsp;Saswati Chakraborty","doi":"10.1016/j.biteb.2026.103019","DOIUrl":"10.1016/j.biteb.2026.103019","url":null,"abstract":"<div><div>The current study assessed the effectiveness of five lab-scale sludge treatment wetland (STW) reactors operated for 407 days. The inoculation, operation, and resting phases lasted 91, 238, and 78 days, respectively. Sludge was applied at a loading rate of 127.6 kg TS/m²/year over 13 cycles, each comprising a 7-day feeding period followed by a 7-day operational rest. In five STW reactors, one was an unplanted (R1), and four were planted with <em>Typha angustifolia</em> (with and without aeration), <em>Canna indica</em> (R3) and <em>Pontederia crassipes</em>. All macrophytes remained healthy, except <em>P. crassipes</em>, which wilted during winter. The sludge quality improved across all reactors: total solids increased from 9% to 48–90%, while volatile solids decreased from 31% TS to 18–23% TS. All planted reactors achieved &gt;98% water loss (WL), compared to 94% in R1. In the WL mechanisms, evapotranspiration (8–13 mm/d) and leachate drainage (11 mm/d) were found dominant in planted reactors and R1, respectively. Overall, all planted reactors outperformed R1, with R3 showing the best results. The passively aerated reactor performed better only in summer compared to the non-aerated reactor. VS reduction slowed down in winter compared to summer; however, WL remained unaffected. Multiple linear regression analysis revealed that vapour pressure deficit and leaf count positively influenced WL, whereas wind speed remained non-significant. Classification and regression tree model linked &gt;98% WL in R3 to temperature &gt; 15.4 °C, wind speed &gt; 0.4 m/s, and relative humidity &lt; 86.5%. Overall, the current study demonstrated superior sludge dewatering compared to previously reported climates.</div></div>","PeriodicalId":8947,"journal":{"name":"Bioresource Technology Reports","volume":"35 ","pages":"Article 103019"},"PeriodicalIF":5.0,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148934778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Host-associated taxonomic and functional diversity of plant growth-promoting bacteria in three duckweed species: Spirodela polyrhiza, Lemna minor, and Wolffia globosa","authors":"Karnjana Ruenpham,&nbsp;Kazuhiro Mori,&nbsp;Yasuhiro Tanaka,&nbsp;Arinthip Thamchaipenet,&nbsp;Masaaki Morikawa,&nbsp;Tadashi Toyama","doi":"10.1016/j.biteb.2026.102989","DOIUrl":"10.1016/j.biteb.2026.102989","url":null,"abstract":"<div><div>Duckweed is an aquatic plant that simultaneously enables biomass production and wastewater treatment. Associated bacteria substantially influence duckweed growth, highlighting the importance of understanding host-associated bacterial interactions for optimizing duckweed-based systems. However, how bacterial taxa and plant growth-promoting (PGP) traits vary among duckweed species remains insufficiently characterized, and culture-based evidence of host-associated taxonomic and functional differentiation among duckweed-associated bacteria remains limited. This study investigated the taxonomic and functional diversity of bacteria associated with three phylogenetically and morphologically distinct duckweeds—<em>Spirodela polyrhiza</em>, <em>Lemna minor</em>, and <em>Wolffia globosa</em>. A total of 54 strains were isolated from axenic duckweeds following controlled co-cultivation with environmental water samples containing indigenous bacterial communities; of these, 47 strains were taxonomically identified, spanning 26 genera across four phyla. Genus-level bacterial community composition exhibited host-associated patterns, whereas phylum-level patterns were similar among duckweed species. These 54 isolates were assessed for PGP traits; specifically, 74.1%, 51.9%, and 61.1% of isolates produced indole-3-acetic acid (IAA) and siderophores, and exhibited potential nitrogen-fixing activity, respectively. Furthermore, 72.2% of isolates promoted duckweed growth, whereas 14.8% inhibited it. Plant growth-promoting bacteria were prevalent among isolates from <em>S. polyrhiza</em> and <em>L. minor</em>, while isolates from <em>W. globosa</em> included a relatively high proportion of plant growth-inhibiting bacteria. Notably, IAA production was the only trait significantly associated with growth promotion. These findings provide culture-based evidence of host-associated taxonomic and functional differentiation among duckweed-associated bacteria. The results advance our understanding of duckweed–microbe interactions and may contribute to the future development of microbial inoculants for biomass production and phytoremediation.</div></div>","PeriodicalId":8947,"journal":{"name":"Bioresource Technology Reports","volume":"35 ","pages":"Article 102989"},"PeriodicalIF":5.0,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148934785","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Regulation mechanisms of substrate macronutrient balance on energy allocation and metabolic homeostasis in black soldier fly larvae","authors":"Feng Luo,&nbsp;Tao Xu,&nbsp;Kuang Sheng,&nbsp;Jun Ni,&nbsp;Hengfeng Miao,&nbsp;Kunlun Yang,&nbsp;Peng Gu,&nbsp;Xueli Ren,&nbsp;Zengshuai Zhang","doi":"10.1016/j.biteb.2026.102993","DOIUrl":"10.1016/j.biteb.2026.102993","url":null,"abstract":"<div><div>Substrate composition is a key factor affecting black soldier fly larvae (BSFL) growth, and protein-rich substrates are generally considered beneficial. However, the underlying mechanisms remain poorly understood, especially regarding how macronutrient balance governs energy allocation and metabolic homeostasis. The present study aimed to investigate the macronutrient (i.e., carbohydrate and protein) ratio on BSFL growth performance and the underlying mechanisms by analyzing gut microbiota succession and BSFL metabolism changes. Results showed that a C/P ratio of 4:1 (B41) yielded the highest larval weight (108.50 mg) and dry matter reduction rate (39.09%). Compared with B41, the high-protein diet (B05) reduced larval weight by 48.39% but produced the highest larval protein content (47.46%). Growth was significantly inhibited in the carbohydrate-only group (B50), with the lowest survival rate (78.50%) and no pupation. The gut microbiota of B05 and B41 was largely similar, suggesting relative stability of the core microbiota under high-protein conditions. Metabolomic analysis indicated that excessive protein intake may suppress lipid synthesis and antioxidant capacity, as reflected by retinol metabolism and glutathione metabolism. In contrast, protein-deficient substrate of group B50 inhibited ATP synthesis (e.g., oxidative phosphorylation) and enzyme biosynthesis (e.g., cofactors biosynthesis), leading to BSFL death or no pupation. Enrichment of <em>unclassified_f__Lachnospiraceae</em> and <em>Lachnoclostridium</em> suggested intestinal inflammation and dysbiosis under protein deficiency. The results obtained provided a simple method for mixing different types of organic waste to achieve the optimal substrate composition for BSFL growth.</div></div>","PeriodicalId":8947,"journal":{"name":"Bioresource Technology Reports","volume":"35 ","pages":"Article 102993"},"PeriodicalIF":5.0,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148951372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design and characterization of neem oil-based photopolymer resins for DLP 3D printing","authors":"Rahul Saraswat,&nbsp;Abhimanew Dhir,&nbsp;Mrityunjay Doddamani","doi":"10.1016/j.biteb.2026.102796","DOIUrl":"10.1016/j.biteb.2026.102796","url":null,"abstract":"<div><div>The environmental issues associated with petroleum-based acrylates in vat photopolymerization have led to exploring sustainable alternatives, such as vegetable oil (VO)-based acrylates. Many VO-based acrylates have been developed, but their low mechanical strength and printability often necessitate modification with suitable comonomers. In this work, a neem oil-based acrylate (AENO) was synthesized through epoxidation and acrylation, forming resin formulations by blending with 1,6-hexanediol diacrylate (HDDA) as a cross-linker, Ethylene Glycol Phenyl Ether Acrylate (EGA) as a reactive diluent, and Bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide as a photoinitiator. Five resin formulations (F1 – F5) with varying amounts of HDDA (0–40 wt%) and 10 wt% EGA were prepared and cured using UV light with Digital Light Processing (DLP). FTIR and ¹H NMR investigations confirmed the structure, whereas DSC and TGA revealed that the glass transition temperature and thermal stability changed systematically as the HDDA level increased. Studies on gel content and swelling showed that the density of crosslinks increased over time, and mechanical characterization revealed that the material transitioned from being flexible in F1 to being comparatively stiffer and more brittle in F5. FESEM (field emission scanning electron microscopy) confirmed the transition of fracture surfaces from a layered structure to dense river patterns with increasing HDDA. This work highlights the tunable partially bio-derived resin formulations, having synthetic acrylate and diluents increasing printing efficiency, density of crosslinking, and mechanical properties, thereby developing a VO-based resin formulation system suitable for vat photopolymerization.</div></div>","PeriodicalId":8947,"journal":{"name":"Bioresource Technology Reports","volume":"34 ","pages":"Article 102796"},"PeriodicalIF":5.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148499291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biomimetic CO2 sequestration using carbonic anhydrase for sustainable management of hazardous asbestos containing wastes","authors":"Stepan Denisov,&nbsp;Ilya Kolyadenko,&nbsp;Georgii Selikhanov,&nbsp;Sergey Volynkin,&nbsp;Matvey Trutnev,&nbsp;Dmitry Goryajnov,&nbsp;Sergey Tsvetkov,&nbsp;Anton Kasprzhitskii,&nbsp;Georgy Lazorenko","doi":"10.1016/j.biteb.2026.102770","DOIUrl":"10.1016/j.biteb.2026.102770","url":null,"abstract":"<div><div>The carbonation of ultramafic mine tailings is a recognized mechanism for geologically stable carbon sequestration. While alkaline mine tailings, such as chrysotile mining residues (CMR), offer significant potential for permanent CO₂ storage, their carbonation is limited by the sluggish hydration of CO₂ at the solid-water interface. This study investigates the efficacy of carbonic anhydrase (CA) as a biomimetic catalyst for enhancing the carbonation of hazardous CMR. A comprehensive experimental approach combining quantitative CO₂ uptake measurements with structural characterization (XRD, FTIR, TGA, BET, SEM), was employed. The addition of carbonic anhydrase (CA) at 0.2 mg/mL accelerated the initial carbonation kinetics and increased the total CO₂ uptake of CMR under ambient conditions (1 atm) and under accelerated carbonation (22 ± 2 °C, 70 ± 5% RH, 4 atm pCO₂, water-to-solid ratio 0.50, 48 h exposure). Mineralogical analyses indicate carbonate formation mainly associated with the consumption of reactive brucite under the tested conditions, while most chrysotile/lizardite remained largely unchanged. These findings suggest that CA can enhance early-stage carbonation and carbonate formation under mild conditions, but full asbestos stabilization was not directly demonstrated. However, further research is needed to assess the scalability of this approach under field conditions, specifically regarding enzyme stability and activity over extended periods, process performance under real-world environmental fluctuations, and it is techno-economic viability.</div></div>","PeriodicalId":8947,"journal":{"name":"Bioresource Technology Reports","volume":"34 ","pages":"Article 102770"},"PeriodicalIF":5.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148499341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Indigenous microalgae for sustainable wastewater sanitation and biorefinery integration: A translational path to resilient resource recovery","authors":"B.R. Sreelekshmy,&nbsp;Sabeela Beevi Ummalyma","doi":"10.1016/j.biteb.2026.102799","DOIUrl":"10.1016/j.biteb.2026.102799","url":null,"abstract":"<div><div>The improper wastewater management and overdependence on fossil fuels pose significant challenges to ecosystem stability and lead to water scarcity. In this context, the objective of the study is the strategic utilization and cultivation of indigenous microalgae as a potent resource for integrated water sanitation and bioenergy production. Correspondingly contributing to the achievement of Sustainable Development Goals (SDGs), particularly SDG 6 and SDG 7. Strategic cultivation of microalgae in wastewater improved water quality by significantly reducing nitrates (99%), phosphates (100%), heavy metals (92–98%), and pathogenic loads (100%), rendering it suitable for both potable and non-potable applications. Utilization of indigenous microalgae enables effective adaptation to stress environmental conditions by reducing their cell size, as evidenced by phase contrast microscopy, and an enhancement in metabolites. This facilitated enhanced nutrient uptake, accelerated cell division, and boosted biomass productivity to 93.750 ± 0.002 mg L⁻¹/day and 90.925 ± 0.004 mg L⁻¹/day for <em>Chlorella sp.,</em> (RCSS-1) and <em>Desmodesmus sp.,</em> (RCSS-2), respectively. Furthermore, the diminished cell size optimizes light absorption by minimizing internal shading and thereby increasing photosynthetic efficiency and carbon fixation rates (4.50 and 6.03%), approximately 50%. In addition, the dominance of fatty acids, hydrocarbons, and other active metabolites reveals its potential as biofuels feed additives, antimicrobials, and surfactants. Thus, low-cost cultivation strategy integrated with existing wastewater treatment systems demonstrates strong economic feasibility and scalability potential. Moreover, this study offers a translational approach for generating low-cost biomass for carbon-neutral bioproducts along with clean water for a circular bioeconomy and sustainable environment.</div></div>","PeriodicalId":8947,"journal":{"name":"Bioresource Technology Reports","volume":"34 ","pages":"Article 102799"},"PeriodicalIF":5.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148477083","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Valorisation of acid casein whey via Chlorella sp. BB-32 cultivation: Growth optimisation and biochemical characterisation","authors":"C.R. Surana,&nbsp;P. Varshney,&nbsp;S.K. Saha,&nbsp;M. Callanan,&nbsp;O. McAuliffe","doi":"10.1016/j.biteb.2026.102814","DOIUrl":"10.1016/j.biteb.2026.102814","url":null,"abstract":"<div><div>Acid casein whey (ACW) is a nutrient-rich by-product of the dairy industry, with low pH, high lactose and mineral content, but its low pH represents a challenge with limited valorisation options. This study investigated the potential of ACW as a feedstock for the growth of <em>Chlorella</em> sp. BB-32, a marine microalga isolated from the Irish coast. Growth experiments were conducted at different heat-treatment and pH-adjustment conditions to optimise biomass production, while simultaneously monitoring the chemical oxygen demand (COD). The ACW substrate, initially at pH 4.69 with high amounts of lactose (31.68 ± 0.05 g/L) and citric acid (41.91 ± 0.16 g/L), was subjected to six pre-treatment protocols, including pH neutralisation and heat treatments ranging from 65 °C to 121 °C. Among these, ACW adjusted to pH 7.5 and heat-treated at 89 °C for 10 min supported the highest microalgal growth, resulting in significant pigment accumulation and biomass productivity. In scale-up experiments, the same pre-treatment conditions resulted in a biomass yield of 1.62 ± 0.08 g/L after 14 days, with total protein, carbohydrate, and lipid amounts reaching 34.77%, 24.2%, and 18.9% of dry weight biomass, respectively. Lipid analysis revealed valuable fatty acids, including oleic, stearic, and linolenic (α + γ) acids, suggesting potential for nutraceutical applications. A COD reduction of 24.5% was achieved, highlighting the bioremediation potential of the microalga. These results demonstrate the feasibility of using <em>Chlorella</em> sp. BB-32 for simultaneous valorisation and remediation of ACW, offering a sustainable route for integrating microalgal biotechnology into dairy waste management and circular bioeconomy frameworks.</div></div>","PeriodicalId":8947,"journal":{"name":"Bioresource Technology Reports","volume":"34 ","pages":"Article 102814"},"PeriodicalIF":5.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148477084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Valorization of turmeric leaf waste for the management of banana burrowing nematode (Radopholus similis)","authors":"Seenivasan Nagachandrabose,&nbsp;Narmadha Kamaraj","doi":"10.1016/j.biteb.2026.102767","DOIUrl":"10.1016/j.biteb.2026.102767","url":null,"abstract":"<div><div>Turmeric (<em>Curcuma longa</em> L.) foliage, typically discarded before rhizome harvest, was evaluated as a soil amendment for managing the banana burrowing nematode <em>Radopholus similis</em>. Ground turmeric leaf powder (GTLP) was assessed through in vitro toxicity assays, GC–MS profiling with molecular docking, pure-compound validation, glasshouse evaluation, and field trials. GTLP caused significant dose and time-dependent nematode mortality. GC–MS identified labda-8(17),12-diene-15,16-dial, curcumenol, 2-carene, isopulegol, and eucalyptol as major constituents. Docking suggested strong to moderate binding of key compounds to FAR-1, suggesting their possible involvement in parasitism-related processes and cuticle-associated functions. Pure-compound assays confirmed the high lethality of labda-8(17),12-diene-15,16-dial and isopulegol. In glasshouse and field studies, GTLP at 50 g plant⁻¹ (three applications) reduced nematode populations by 53–56%, enhanced beneficial nematode communities, improved plant growth, and increased yield by 24%, with a cost–benefit ratio of 1:2.3–2.4. These results demonstrate turmeric leaf waste as a sustainable and cost-effective strategy for managing <em>R. similis</em> in banana.</div></div>","PeriodicalId":8947,"journal":{"name":"Bioresource Technology Reports","volume":"34 ","pages":"Article 102767"},"PeriodicalIF":5.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148477104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pros and cons of nitrogen replenishment in compost, augmented by natural acidity regulators, agri-buffering adjuvants, and grease trap waste","authors":"Kun Chen,&nbsp;Naser Khan,&nbsp;Peter Wadewitz,&nbsp;Pradeep Lamichhane,&nbsp;Mohammad Boshir Ahmed,&nbsp;Philip Kwong,&nbsp;Volker Hessel","doi":"10.1016/j.biteb.2026.102729","DOIUrl":"10.1016/j.biteb.2026.102729","url":null,"abstract":"<div><div>Nitrogen loss via ammonia volatilisation remains a major limitation in industrial composting, particularly under alkaline conditions with insufficient pH control. In this study, a laboratory-scale in-vessel composting system was established to systematically compare multiple nitrogen regulation strategies, including natural acidity regulators, agri-buffering adjuvants, and grease trap waste (GTW), under identical and controlled conditions. The effects of these additives on nitrogen retention and transformation were evaluated through moisture conservation, pH stability, nitrogen conversion history, total nitrogen content, and elemental evolution during composting.</div><div>Compared with the untreated control, organic acid–based and phosphate-buffered additives significantly improved nitrogen conservation and process stability. Total nitrogen loss remained below 20% across treatments, while compost pH was stabilised within a narrower range (8.1–9.1) with reduced variability (SD = 0.22). Germination and seedling vigour tests further indicated enhanced compost maturity in selected treatments, with germination rates reaching 100% and seedling vigour index values up to 1300. In contrast, GTW exhibited distinct nitrogen transformation behaviour, revealing trade-offs between nitrogen retention and overall composting performance.</div><div>This study provides a systematic comparison of nitrogen regulation pathways under identical in-vessel conditions and proposes a holistic framework integrating moisture, pH, nitrogen dynamics, and elemental changes to support informed selection of nitrogen control strategies for industrial composting applications. The industrial Peats Group Ltd. green waste used allowed good composting with all natural additives studied, facilitating the comparative value of this study.</div></div>","PeriodicalId":8947,"journal":{"name":"Bioresource Technology Reports","volume":"34 ","pages":"Article 102729"},"PeriodicalIF":5.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148477105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Valorization of hogla leaves (Typha elephantina) into functional acoustic materials: A high-value utilization pathway for wetland biomass","authors":"Haradhan Kolya,&nbsp;Chun-Won Kang","doi":"10.1016/j.biteb.2026.102820","DOIUrl":"10.1016/j.biteb.2026.102820","url":null,"abstract":"<div><div>Large volumes of wetland biomass remain underutilized despite their potential for value-added applications. Hogla leaves (<em>Typha elephantina</em>) are a fast-growing plant that thrives in wetlands and is commonly found in South Asia. They are usually used in low-value traditional products or discarded after they are picked. This research explores a high-value utilization pathway for hogla leaves by converting them into bio-based sound-absorbing materials for indoor applications. Two-microphone impedance tube testing and noise reduction coefficient (NRC) analysis were employed to evaluate the acoustic performance of samples with varying thicknesses (1–5 cm) and air-backed cavity configurations. The sound absorption coefficient for cross-sectional samples (4 cm thick) was 0.96 at 1000 Hz, 0.86 on average in the 1000–2000 Hz range, and a tube-based NRC estimate of 0.64. Statistical analysis verified significantly higher absorption for cross-sectional samples (<em>p</em> &lt; 0.05). The results indicate that the naturally porous and fibrous structure of hogla leaves enables effective mid-frequency sound absorption without the need for chemical treatment. This study presents an energy-efficient, binder-free valorization approach for transforming underutilized wetland biomass into functional materials, thereby promoting sustainable bioresource utilization and diminishing dependence on synthetic acoustic products.</div></div>","PeriodicalId":8947,"journal":{"name":"Bioresource Technology Reports","volume":"34 ","pages":"Article 102820"},"PeriodicalIF":5.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148477077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}