{"title":"Biohydrogen production through the biological water gas shift reaction for sustainable energy: Prediction of the effect of key parameters","authors":"Amel Bouciouf , Hanane Ameur , Lemnouer Chibane","doi":"10.1016/j.biteb.2025.102320","DOIUrl":"10.1016/j.biteb.2025.102320","url":null,"abstract":"<div><div>Developing sustainable hydrogen production technologies is essential to meet the global energy transition. In this context, the present study focusses on exploring an alternative which is, the biological water-gas-shift reaction using <em>Rhodospirillum rubrum</em> under anaerobic conditions as a potential route for biohydrogen generation. The study consists to concretizing the effect of key parameters on the performances of the bioprocess, especially in terms of hydrogen productivity. The main results show that the highest hydrogen productivity could be achieved when using a smaller working volume, a smaller orifice diameter of the bioreactor, and a moderate inlet carbon monoxide pressure and agitation speed. Noteworthy, it was found that there was a gain of 20 % in hydrogen production when using an industrial system compared to the lab-scale fermenter. Therefore, the results obtained by the predictive model could highlight the relevance of the bioprocess as a valuable route and as veritable guidelines for industrial biohydrogen production design.</div></div>","PeriodicalId":8947,"journal":{"name":"Bioresource Technology Reports","volume":"32 ","pages":"Article 102320"},"PeriodicalIF":0.0,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145218333","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":"Preparation and characterisation of water dispersible cellulose nanocrystals (CNC) dry powder from potato waste pulp of the potato starch industry: effect of drying method","authors":"Fahimeh Mohammadpanah , Rabi Behrooz , Roohollah Roohzadeh","doi":"10.1016/j.biteb.2025.102311","DOIUrl":"10.1016/j.biteb.2025.102311","url":null,"abstract":"<div><div>This study introduces a novel and efficient dialysis-free methodology for isolating cellulose nanocrystal (CNC) powder from potato processing byproducts, employing sodium acetate (NaOAc) as a neutralising electrolyte. The NaOAc approach yielded 72.3 ± 2.1 % CNCs, a value competitive with the traditional sulfuric acid hydrolysis yield of 68.5 ± 3.4 %. This method significantly enhanced process efficiency, reducing the purification time by 48 h and decreasing total water consumption by approximately 60 % by eliminating the dialysis step. Sodium acetate effectively screened the negative surface charges of the CNCs, facilitating rapid precipitation governed by DLVO theory. The influence of downstream drying was critically evaluated: spray drying produced CNCs with superior water dispersibility, characterised by a mean redispersed particle size of 68 nm and a uniform morphology, while freeze drying provided CNCs with enhanced thermal stability (onset degradation temperature of 298 °C; peak at 353 °C). Structural analysis confirmed the preservation of cellulose Iβ crystallinity across all samples, with crystallinity indices inversely related to the drying intensity, ranging from 72.8 % (spray-dried) to 78.5 % (oven-dried). The NaOAc-assisted technique presents a scalable and economically viable solution for valorising potato waste into high-value CNCs, with the selection of drying method (spray vs. freeze) being guided by application-specific requirements for either colloidal dispersibility or thermal performance.</div></div>","PeriodicalId":8947,"journal":{"name":"Bioresource Technology Reports","volume":"32 ","pages":"Article 102311"},"PeriodicalIF":0.0,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145218292","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":"Green functionalization of Arachis hypogaea shells via Aspergillus-mediated SSF for efficient Pb(II) removal: Kinetics, mechanism and economic evaluation","authors":"Abhishek Das, Sudip Kumar Das","doi":"10.1016/j.biteb.2025.102315","DOIUrl":"10.1016/j.biteb.2025.102315","url":null,"abstract":"<div><div>A novel eco-friendly adsorbent was developed by modifying <em>Arachis hypogaea</em> (groundnut) shells using <em>Aspergillus niger</em> mediated solid-state fermentation (SSF). The SSF technique is a unique, cost-effective, and environmentally friendly method to improve the structural properties of the adsorbent. This green functionalization enhanced the adsorptive performance without chemical treatment. Characterization through FTIR and SEM revealed the introduction of active functional groups and increased porosity. The maximum Pb(II) removal capacity of fermented groundnut shell (FGS) reached 36.82 mg/g at pH 5.0, outperforming the raw shell (3.53 mg/g). Adsorption followed the Langmuir isotherm and pseudo-second-order kinetics, with film diffusion as the primary mechanism. Thermodynamic analysis indicated spontaneous and endothermic adsorption, while regeneration studies showed over 30% efficiency retention after two cycles. The process reduced treatment cost by over tenfold. Furthermore, the treatment of raw industrial effluent also shows significant decreases during the batch adsorption process. This study offers a sustainable alternative for heavy metal remediation using agro-waste and fungal biotechnology.</div></div>","PeriodicalId":8947,"journal":{"name":"Bioresource Technology Reports","volume":"32 ","pages":"Article 102315"},"PeriodicalIF":0.0,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145218293","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}
Sundaram Deepika Bharathi , Anshu Baldia , Emel Aktas , Debshika Dutta Roy , Kashyap Kumar Dubey , Vijay Kumar Garlapati , Vinod Kumar , Debajyoti Kundu , Samuel Jacob
{"title":"Systematic valorisation and circular bioeconomy prospects from potato wastes: A review","authors":"Sundaram Deepika Bharathi , Anshu Baldia , Emel Aktas , Debshika Dutta Roy , Kashyap Kumar Dubey , Vijay Kumar Garlapati , Vinod Kumar , Debajyoti Kundu , Samuel Jacob","doi":"10.1016/j.biteb.2025.102327","DOIUrl":"10.1016/j.biteb.2025.102327","url":null,"abstract":"<div><div>Potato is among the most widely cultivated and consumed food crops worldwide, with production steadily rising to meet global food demands. Alongside this growth, industrial processing of potato-based products generates substantial amounts of waste streams, including peels, mash, pulp, and process water, that are often discarded without commercial utilization. These residues are rich in carbohydrates, proteins, and bioactive compounds, making them attractive substrates for extraction and bioconversion into a wide range of value-added products. Emerging studies demonstrate their potential for producing biofuels, organic acids, enzymes, carotenoids, lipids, nutraceuticals, fertilizers and bioenergy-related products. Valorization of potato residues not only enhances resource efficiency but also supports circular economy principles and reduces environmental burden. This review synthesizes current advances through a bibliometric and systematic analysis of SCOPUS-indexed publications (2015–2025), complemented by keyword co-occurrence mapping using VOSviewer to capture research hotspots, technological pathways, and sustainability linkages. The findings highlight that potato waste valorization contributes significantly to Sustainable Development Goals (SDGs), particularly by promoting responsible production and consumption (SDG12), enabling clean and renewable energy generation (SDG7), and mitigating negative environmental impacts (SDGs 6, 11, 13, 14, and 15). Furthermore, integrating potato residue valorization into industrial symbiosis strengthens innovation, infrastructure, and economic growth (SDGs 8 and 9). Overall, potato waste represents a versatile feedstock for biorefinery applications, offering a holistic model that integrates circular economy strategies with sustainable development objectives.</div></div>","PeriodicalId":8947,"journal":{"name":"Bioresource Technology Reports","volume":"32 ","pages":"Article 102327"},"PeriodicalIF":0.0,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145218331","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":"Integrating plant microbial fuel cells into green infrastructure: Tackling heat islands and powering sensors","authors":"M. Azizul Moqsud, Futa Akamatsu","doi":"10.1016/j.biteb.2025.102316","DOIUrl":"10.1016/j.biteb.2025.102316","url":null,"abstract":"<div><div>Green Infrastructure (GI) contributes to urban heat island mitigation and aesthetics, yet water supply monitoring remains labor-intensive. This study investigates bioelectricity generation using plant microbial fuel cells (PMFCs) integrated into a GI system constructed with recycled materials. Two GI models (120 × 50 × 60 cm) comprising three 20 cm layers of organic soil, recycled foamed glass (FWG), and decomposed granite were developed. Three PMFCs connecting in series with bamboo charcoal electrodes were embedded in the FWG layer beneath planted vegetation. Voltage was recorded every minute over 20 days and correlated with weather data. Results showed increased bioelectricity during summer driven by solar radiation, while precipitation and temperature had limited influence. In winter, voltage declined after one week. Peak voltage and power densities reached 1800 mV and 23 mW/m<sup>2</sup> (winter), and 1400 mV and 11 mW/m<sup>2</sup> (summer). Thermographic imaging revealed temperature differences exceeding 20 °C between the GI surface and adjacent concrete, highlighting GI's thermal regulation potential.</div></div>","PeriodicalId":8947,"journal":{"name":"Bioresource Technology Reports","volume":"32 ","pages":"Article 102316"},"PeriodicalIF":0.0,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145218295","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}
A.J. Toribio , R. Lerma-Moliz , F. Suárez-Estrella , M.J. Estrella-González , M.R. Martínez-Gallardo , M.M. Jurado , J.A. López-González , J.A. Sáez , F. Barba , M.J. López
{"title":"Application of microbial cocktails from olive oil mill sludge to promote plant health and welfare","authors":"A.J. Toribio , R. Lerma-Moliz , F. Suárez-Estrella , M.J. Estrella-González , M.R. Martínez-Gallardo , M.M. Jurado , J.A. López-González , J.A. Sáez , F. Barba , M.J. López","doi":"10.1016/j.biteb.2025.102319","DOIUrl":"10.1016/j.biteb.2025.102319","url":null,"abstract":"<div><div>The main objective of this work was the physicochemical and microbiological characterization of Olive Mill Waste sludge (OMWs) to develop strategies aimed at increasing plant well-being and phytoprotection. Eighteen strains were tested <em>in vitro</em> for their ability to suppress pathogens such as <em>Botrytis cinerea</em>, <em>Fusarium oxysporum</em> f. <em>sp. melonis</em>, <em>Xanthomonas campestris</em> and <em>Clavibacter michiganensis</em> subsp. <em>michiganensis</em>. Among them, three microbial strains with promising antagonistic activity were selected for further analysis. These strains also improved seedling germination and increased root weight through biopriming<em>.</em> The selected strains were identified as <em>Bacillus wiedmannii</em> (OR-BS-1), <em>Aspergillus terreus</em> (OR-HS-2) and <em>Penicillium paneum</em> (OR-HS-6) and were tested <em>in vivo</em> as a microbial <em>cocktail</em>. The microbial cocktail caused phytostimulant activity in seedlings and a notable protective effect against fungal phytopathogens, though results varied depending on the pathosystem. These findings highlight the importance of revaluing OMWs as a source of beneficial microorganisms, contributing to a more sustainable agriculture.</div></div>","PeriodicalId":8947,"journal":{"name":"Bioresource Technology Reports","volume":"32 ","pages":"Article 102319"},"PeriodicalIF":0.0,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145218299","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}
Zike Xue , Guohuan Xiong , Chao He , Haoyu Yue , Huajun Chen , Hongxu Zhu , Weiwei Liu
{"title":"Application prospects of dark septate endophytes and humic acid in the remediation of heavy metal contaminated soil","authors":"Zike Xue , Guohuan Xiong , Chao He , Haoyu Yue , Huajun Chen , Hongxu Zhu , Weiwei Liu","doi":"10.1016/j.biteb.2025.102302","DOIUrl":"10.1016/j.biteb.2025.102302","url":null,"abstract":"<div><div>Soil heavy metal contamination has posed a severe threat to the agriculture and ecological environments globally, and jeopardized human health through the food chain. Currently, green and sustainable bioremediation technologies have received extensive attention in the treatment of soil heavy metal pollution, including phytoremediation, microbial remediation, and organic amendment remediation. Among them, dark septate endophytic fungi (DSE) and humic acid (HA) have demonstrated notable efficacy. In this study, relevant literature was retrieved from databases, including Web of Science and PubMed. The research focuses on the mechanisms and applications of DSE and HA in the remediation of heavy metal pollution within agricultural and mining-affected regions. The principles of their individual actions, technical limitations, and potential synergistic strategies for combined application were systematically reviewed. However, the synergistic mechanism of their integrated application in the remediation of heavy metal-contaminated soils requires further in-depth investigation. This study presents novel insights and methods in the field of soil remediation, thereby providing more robust support for addressing global heavy metal contamination challenges.</div></div>","PeriodicalId":8947,"journal":{"name":"Bioresource Technology Reports","volume":"32 ","pages":"Article 102302"},"PeriodicalIF":0.0,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145218332","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":"Comparative paddy straw degradation potential of Psychrotrophic Fungal Consortia and Pusa Decomposer at low temperatures","authors":"S.T.M. Aravindharajan , Livleen Shukla , D. Vijaysri , Sandeep Kumar Singh , Reetesh Kumar , Rajesh Kumar , Shalini Gaur Rudra , Gautam Chawla , Ajay Kumar","doi":"10.1016/j.biteb.2025.102314","DOIUrl":"10.1016/j.biteb.2025.102314","url":null,"abstract":"<div><div>Low temperatures impose a major limitation on microbial activity, restricting nutrient utilization and slowing the decomposition of crop residues in cold regions. This study investigated the degradation potential of psychrotrophic fungal consortia in comparison with Pusa Decomposer (PD) at 10, 15, and 20 °C. Among the tested consortia, MC 1 comprising <em>Penicillium aethiopicum</em> LTF 1, <em>Penicillium echinulatum</em> LTF 13, and <em>Penicillium chrysogenum</em> LTF 21 proved the maximum degradation efficiency. MC 1 attained a Relative Degradation Rate (RDR) of 43.63 ± 4.61 % and a C:N ratio of 46.33 ± 1.52 on finely chopped straw (2–3 cm) after 42 days which outperforms PD and other consortia. Significant reductions in straw Cutting Strength, Total Cellulose (TC), Total Lignin (TL), and Total Hemicellulose (THC) contents were recorded, alongside the highest mineralizable carbon and decay rates as indicated by cumulative CO₂ evolution assays. Temperature quotient (Q<sub>5</sub>) values confirmed optimum degradation efficiency at 15–20 °C. Scanning electron microscopy revealed clear structural modifications in MC 1 treated straw, consistent with advanced degradation. Collectively, the results highlight MC 1 as a promising psychrotrophic consortium for efficient paddy straw decomposition under low temperature conditions, with potential applications in sustainable residue management and nutrient recycling in cold agroecosystems.</div></div>","PeriodicalId":8947,"journal":{"name":"Bioresource Technology Reports","volume":"32 ","pages":"Article 102314"},"PeriodicalIF":0.0,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145218289","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}
Md Hadiuzzaman , Sonkorson Talukder Sabuj , Jia Liu
{"title":"Phytoremediation of low-concentration Cr(VI)-contaminated soil from a superfund site using sunflower (Helianthus annuus L.) with concurrent biodiesel production from harvested seeds","authors":"Md Hadiuzzaman , Sonkorson Talukder Sabuj , Jia Liu","doi":"10.1016/j.biteb.2025.102308","DOIUrl":"10.1016/j.biteb.2025.102308","url":null,"abstract":"<div><div>The purpose of this study was to evaluate the feasibility of using sunflower (<em>Helianthus annuus</em> L.) for simultaneous phytoremediation of low-level hexavalent chromium [Cr(VI)]-contaminated soil and biodiesel production. Soil was collected from a remediated superfund site where the residual Cr(VI) concentration was low (0.16 ± 0.04 mg/kg) due to prior cleanup, and controlled pot experiments were conducted under two amendment conditions—low-nitrogen chemical fertilizer and biosolids—to assess plant growth, Cr(VI) uptake, biodiesel quality, and microbial responses. In addition, bioaccumulation factor and translocation factor were assessed to evaluate the efficiency of chromium uptake and movement within the plant. Results showed that Cr(VI) was absorbed by the roots and translocated to shoots, leaves, and seeds, with both amendments achieving comparable phytoextraction efficiencies. Biosolids amendment significantly enhanced plant biomass compared to chemical fertilizer, while no visible phytotoxicity symptoms were observed, indicating that sunflower tolerated the low-level Cr(VI) contamination. Biodiesel extracted from the seeds met the American Society for Testing and Materials (ASTM) standards for acid value and density, confirming its potential as a renewable fuel. Moreover, microbial biomass carbon and nitrogen in the rhizosphere increased after phytoremediation, suggesting a beneficial role of soil microbes in supporting plant growth and remediation. Overall, this study demonstrates that integrating sunflower-based phytoremediation of low-level Cr(VI) with biodiesel production provides a sustainable and cost-effective strategy for addressing residual contamination while contributing to renewable energy generation.</div><div><sup>⁎</sup>Corresponding author at: School of Civil, Environmental and Infrastructure Engineering, Mail Code 6603, Southern Illinois University, 1230 Lincoln Dr., Carbondale, Illinois 62901, USA.</div></div>","PeriodicalId":8947,"journal":{"name":"Bioresource Technology Reports","volume":"32 ","pages":"Article 102308"},"PeriodicalIF":0.0,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145218291","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}
Joanna Rosik , Katarzyna E. Kosiorowska , Klaudiusz Tomczyk , Marzena Domińska , Kamila Hamal , Sylwia Stegenta-Dąbrowska
{"title":"Compost's biochar as a practical odor mitigation strategy for the composting industry","authors":"Joanna Rosik , Katarzyna E. Kosiorowska , Klaudiusz Tomczyk , Marzena Domińska , Kamila Hamal , Sylwia Stegenta-Dąbrowska","doi":"10.1016/j.biteb.2025.102312","DOIUrl":"10.1016/j.biteb.2025.102312","url":null,"abstract":"<div><div>Composting is a widely adopted method for the treatment of organic waste globally. It is relatively easy to implement and offers the added benefit of producing fertilizer. However, a significant drawback is the emission of odorous compounds. This study investigates the potential of using biochar derived from compost as an odor mitigation strategy during semi-technical scale composting of green waste. Experiments were conducted using 15 Mg compost piles over a six-week period, with compost's biochar added at rates of 0 %, 3 %, 6 %, and 9 % (dry matter basis). The compost's biochar was produced via pyrolysis at 550 °C. The results indicate that the addition of 6–9 % compost's biochar enhanced pile temperature and oxygen availability. These improvements contributed to an overall reduction in volatile organic compound (VOC) emissions by 28–32 %, with reductions of up to 50 % observed during the first week of composting – when VOC emissions are typically at their highest. The most pronounced mitigation effects were observed for two major VOC families: (1) terpenes and terpenoids and (2) ketones and aldehydes. Given the common challenge of odor emissions and low compost quality in many composting facilities, this study highlights a promising strategy for simultaneously improving process performance and product quality through the reuse of compost's biochar.</div></div>","PeriodicalId":8947,"journal":{"name":"Bioresource Technology Reports","volume":"32 ","pages":"Article 102312"},"PeriodicalIF":0.0,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145218290","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}