Biomass Conversion and Biorefinery最新文献_第5页

New insights on microbial extracellular polysaccharides: production, biological activity, and applications 微生物胞外多糖的新见解：生产，生物活性和应用

IF 4.1 4区工程技术

Biomass Conversion and Biorefinery Pub Date : 2025-04-02 DOI: 10.1007/s13399-025-06802-3

Suparna Sen, Onkar Nath Tiwari, Raj Kumar Arya, Tridib Kumar Bhowmick, Kalyan Gayen

{"title":"New insights on microbial extracellular polysaccharides: production, biological activity, and applications","authors":"Suparna Sen, Onkar Nath Tiwari, Raj Kumar Arya, Tridib Kumar Bhowmick, Kalyan Gayen","doi":"10.1007/s13399-025-06802-3","DOIUrl":"10.1007/s13399-025-06802-3","url":null,"abstract":"<div><p>Extracellular polysaccharides (EPSs) are known as unique polymeric macromolecules, synthesized by diverse ranges of microorganisms (e.g., bacteria, fungi and microalgae) with different biological activities. These EPSs are primarily located as an enveloped layer around the microbial cells or released in the external environment for various reasons such as host defence, preventing external stress, attachment with the solid surfaces, and cell signalling purposes. EPSs are predominantly composed of hetero or homo polysaccharides of different monomeric sugar molecules (e.g., d-glucopyranose, Glucose, Mannose, Galactose, Fructose, Raffinose, Galactosamine, etc.). These EPSs have been attracted the attention of the researchers because of their vast applicational opportunities in the food, pharmaceutical, and fiber industries. EPSs have the potential to be an alternative to synthetic polymeric substances for their non-toxic, biocompatible, and biodegradable properties. This review critically focus on (i) physicochemical characteristics and functionality of prominent extracellular polysaccharides; (ii) different biological sources of EPSs from bacteria, fungi, microalgae, and cyanobacteria; (iii) strategies for the enhancement of yield and productivity of EPSs by manipulating physicochemical and chemicals factors; (iv) application of EPSs as antibacterial, antifungal, and antiviral agent with emphasis on biomedical application; (v) published patents on EPSs for biomedical application; and (vi) conclusion with future perspectives. The difficulties in determining the structure and optimizing the process for the large-scale manufacture of EPSs are highlighted along with suggestions for future research directions.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":488,"journal":{"name":"Biomass Conversion and Biorefinery","volume":"15 18","pages":"24793 - 24822"},"PeriodicalIF":4.1,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145190263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","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 sorption parameters on the removal of malachite green with modified Juniperus Excelsa cone biochar 吸附参数对改性刺柏生物炭去除孔雀石绿的影响

IF 4.1 4区工程技术

Biomass Conversion and Biorefinery Pub Date : 2025-04-02 DOI: 10.1007/s13399-025-06797-x

Uğur Özkan, Okan Bayram, Halil Turgut Şahin

{"title":"Effect of sorption parameters on the removal of malachite green with modified Juniperus Excelsa cone biochar","authors":"Uğur Özkan, Okan Bayram, Halil Turgut Şahin","doi":"10.1007/s13399-025-06797-x","DOIUrl":"10.1007/s13399-025-06797-x","url":null,"abstract":"<div><p>The use of biochar, which is a carbon-rich material obtained by pyrolysis of various organic raw materials for dye pollution in wastewater, is promising for the removal of dyes from wastewater. Modified biochars whose structures are changed are currently being investigated with many studies. In this study, <i>Juniperus Excelsa</i> (JE) cone, which is an economical and accessible tree species, was converted into biochar (JEB) and modified with iron (mJEB) and given magnetic properties. mJEB was characterized and its structure was investigated by Brunauer–Emmett–Teller (BET), X-Ray diffraction method (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and point of zero charge (pH<sub>PZC</sub>). Afterwards, the removal of malachite green (MG) dye by batch adsorption method was investigated in adsorption parameters such as pH, temperature, time, dosage, initial MG concentration. The results showed that MG adsorption with mJEB proceeded via pseudo-second-order (PSO), was an endothermic process and complied with the Langmuir isotherm model. The maximum adsorption capacity (q<sub>max</sub>) in MG removal with mJEB was calculated as 38.023 mg/g. Our study will be an important step in dye removal studies with mJEB.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":488,"journal":{"name":"Biomass Conversion and Biorefinery","volume":"15 18","pages":"25093 - 25106"},"PeriodicalIF":4.1,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s13399-025-06797-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145190278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Green polymer-based harvesting of microalgae cultivated using nanourea as a nitrogen source and its subsequent usage for bioethanol production 利用纳米脲作为氮源培养的微藻的绿色聚合物收获及其随后用于生物乙醇生产

IF 4.1 4区工程技术

Biomass Conversion and Biorefinery Pub Date : 2025-04-02 DOI: 10.1007/s13399-025-06801-4

Sayan Roy, Supratim Ghosh, Shantonu Roy

{"title":"Green polymer-based harvesting of microalgae cultivated using nanourea as a nitrogen source and its subsequent usage for bioethanol production","authors":"Sayan Roy, Supratim Ghosh, Shantonu Roy","doi":"10.1007/s13399-025-06801-4","DOIUrl":"10.1007/s13399-025-06801-4","url":null,"abstract":"<div><p>Third-generation biofuel using algal biomass as feedstock has gained importance in recent years. The present study explores an integrated approach for bioethanol production from <i>Micractinium</i> sp., biomass cultivated using nanourea (NU) as a nitrogen source. Moreover, a novel L-arginine-tagged guar gum (AGG) polymer was developed for the eco-friendly harvesting of microalgal cells. A maximum biomass yield of 5.94 ± 0.07 g L⁻<sup>1</sup>, productivity of 0.38 ± 0.02 g L⁻<sup>1</sup> d⁻<sup>1</sup>, and a carbohydrate content of 44.78 ± 2.09% (w/w) was observed on supplementing 2.66 mM nanourea in a 2-L bubble column reactor. The flocculant AGG polymer showed 97.75 ± 1.12% flocculation efficiency at 100 ppm, further improving to 99.46% with an augmentation FeCl<sub>3</sub> dosage (60 ppm). The harvested microalgal biomass was subjected to microwave-assisted mixed organic acid (acetic acid and formic acid) pretreatment and subsequent enzymatic saccharification with a cocktail of cellulase and amylase (1%, w/w), giving 43.12 ± 1.05% (w/v) reducing sugars yield. These sugars were then converted into bioethanol with a yield of 0.48 ± 0.01 g g<sup>−1</sup> of reducing sugars using a 250-mL conical flask. This study presents a novel and eco-friendly strategy for microalgal cultivation, harvesting, and bioethanol production, offering a significant step forward in sustainable biofuel technologies and contributing to resource efficiency.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":488,"journal":{"name":"Biomass Conversion and Biorefinery","volume":"15 16","pages":"23389 - 23410"},"PeriodicalIF":4.1,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanisms of surfactant JFC-M-assisted dilute phosphoric acid plus steam explosion of poplar wood 表面活性剂jfc - m辅助稀释磷酸加杨木蒸汽爆炸机理

IF 4.1 4区工程技术

Biomass Conversion and Biorefinery Pub Date : 2025-04-01 DOI: 10.1007/s13399-025-06793-1

Yayu Liang, Denghui Tong, Kaiwen Hou, Zhen Li, Lin Zhang, Lishu Shao, Zhiping Wu, Yilei Huang, Peng Zhan

{"title":"Mechanisms of surfactant JFC-M-assisted dilute phosphoric acid plus steam explosion of poplar wood","authors":"Yayu Liang, Denghui Tong, Kaiwen Hou, Zhen Li, Lin Zhang, Lishu Shao, Zhiping Wu, Yilei Huang, Peng Zhan","doi":"10.1007/s13399-025-06793-1","DOIUrl":"10.1007/s13399-025-06793-1","url":null,"abstract":"<div><p>In this paper, mechanisms of a surfactant namely JFC-M assisting the dilute phosphoric acid plus steam explosion poplar were studied. During the impregnation process, the employment of JFC-M boosted the weight gains and impregnation degrees of poplar using dilute phosphoric acid as an impregnating solution, which was beneficial for the subsequent steam explosion. Besides assisting in altering the structure, porosity, and surface of pores in poplar, the addition of JFC-M reduced the block effect on feedstock, increasing the connectivity of aperture channels, which was identified by a mercury intrusion porosimetry method. The FTIR results revealed that JFC-M improved the removal of hemicellulose and acetyl groups. In addition, the crystallinity of feedstock was also changed and determined by an X-ray diffractometer. The <i>CrI</i> value increased from 44.2% (untreated) to 62.1% (2.0% H<sub>3</sub>PO<sub>4</sub> + 2.0% JFC-M DPASE). The 2D-HSQC NMR analysis confirmed that JFC-M promoted lignin removal as well as structural changes. All of these findings were designed to establish a foundation for subsequent investigative efforts within the discipline.</p></div>","PeriodicalId":488,"journal":{"name":"Biomass Conversion and Biorefinery","volume":"15 16","pages":"22675 - 22686"},"PeriodicalIF":4.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sustainable synthesis of reusable nitrogen-doped hydrochar from cassava pulp for simultaneous dye removal in environmental water 木薯浆可持续合成可重复使用的掺氮氢炭在环境水中同时脱色

IF 4.1 4区工程技术

Biomass Conversion and Biorefinery Pub Date : 2025-04-01 DOI: 10.1007/s13399-025-06803-2

Suranan Anantachaisilp, Rawisara Chokdeepanich, Nirinthana Ungudonpakdee, Napat Losathitmonton, Kristpong Trangkanont, Somlak Ittisanronnachai, Kanokorn Wechakorn

{"title":"Sustainable synthesis of reusable nitrogen-doped hydrochar from cassava pulp for simultaneous dye removal in environmental water","authors":"Suranan Anantachaisilp, Rawisara Chokdeepanich, Nirinthana Ungudonpakdee, Napat Losathitmonton, Kristpong Trangkanont, Somlak Ittisanronnachai, Kanokorn Wechakorn","doi":"10.1007/s13399-025-06803-2","DOIUrl":"10.1007/s13399-025-06803-2","url":null,"abstract":"<div><p>Cassava is an agricultural plant produced for the consumption of its roots. Leftovers from the processing step result in excessive amounts of agricultural waste, most of which is made up of cassava pulp. Advantageously, over 55% of dried cassava pulp is starch, making it rich in carbon and a suitable precursor for synthesizing carbon-based materials. In this work, cassava pulp was utilized as a precursor for synthesizing nitrogen-doped hydrochar (HC) <i>via</i> a hydrothermal carbonization method. The synthesized HC was studied as an adsorbent for removing organic dyes from aqueous solutions. HC showed great adsorption abilities towards methylene blue, methyl violet, and crystal violet, with the maximum adsorption capacities being 96.5%, 99.7%, and 99.8%, respectively, obtaining equilibrium within 10 min. The HC showed was reusable exceeding 90% after 4 cycles of adsorption/desorption, being able to maintain an adsorption capacity of greater than 50% for up to 9 rounds of reuse. Furthermore, HC was demonstrated as an adsorbent for commercial textile dyes.</p></div>","PeriodicalId":488,"journal":{"name":"Biomass Conversion and Biorefinery","volume":"15 16","pages":"22877 - 22888"},"PeriodicalIF":4.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Keratin nanofiber: sustainable innovation in the nonwoven textile sector to mitigate the generation of microplastic 角蛋白纳米纤维：在非织造纺织领域的可持续创新，以减轻微塑料的产生

IF 4.1 4区工程技术

Biomass Conversion and Biorefinery Pub Date : 2025-04-01 DOI: 10.1007/s13399-025-06812-1

Fabiane Gomes de Oliveira, Adriano Alves Passos, Michelle Gonçalves Mothé

{"title":"Keratin nanofiber: sustainable innovation in the nonwoven textile sector to mitigate the generation of microplastic","authors":"Fabiane Gomes de Oliveira, Adriano Alves Passos, Michelle Gonçalves Mothé","doi":"10.1007/s13399-025-06812-1","DOIUrl":"10.1007/s13399-025-06812-1","url":null,"abstract":"<div><p>This work briefly reviews the potential of chicken feathers, a waste material widely generated by the growing poultry industry, as a source of β-keratin. It highlights its use as a raw material in the electrospinning process. This innovative process allows the transformation of keratin into nanofibers to be applied in the textile industry as a nonwoven material, substituting synthetic polymers and consequently avoiding the generation of microplastics. These keratin nanofibers exhibit high surface area and optimized functional properties, significantly expanding the application of this material. Primarily intended for animal feed or compost production, chicken feathers are valuable for developing advanced materials. Keratin nanofibers, in particular, have shown great potential for applications in biomedicine, such as tissue engineering and cell regeneration, due to their biocompatibility, biodegradability, and versatility. The present study also analyzed different keratin extraction methods and adjuvant polymers’ role in improving nanofibers’ properties, highlighting the importance of sustainable and innovative processes to add value to agro-industrial waste. The bibliographic research covers the last 50 years, from 1974 to 2023, offering a comprehensive overview of the most recent approaches and trends in the field.\u0000</p></div>","PeriodicalId":488,"journal":{"name":"Biomass Conversion and Biorefinery","volume":"15 16","pages":"22687 - 22705"},"PeriodicalIF":4.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on kinetics of lactose isomerization producing lactulose and comparison of performance of two reactor models via simulation with Aspen Plus 用Aspen Plus模拟研究乳糖异构化生成乳果糖的动力学及两种反应器模型的性能比较

IF 4.1 4区工程技术

Biomass Conversion and Biorefinery Pub Date : 2025-04-01 DOI: 10.1007/s13399-025-06788-y

Jun Wang, Luya Zhang, Yunfeng Cui, Qiuxi Li, Lu Huang, Zewan Bao

{"title":"Study on kinetics of lactose isomerization producing lactulose and comparison of performance of two reactor models via simulation with Aspen Plus","authors":"Jun Wang, Luya Zhang, Yunfeng Cui, Qiuxi Li, Lu Huang, Zewan Bao","doi":"10.1007/s13399-025-06788-y","DOIUrl":"10.1007/s13399-025-06788-y","url":null,"abstract":"<div><p>Lactulose is a non-digestible oligosaccharide with unique functional properties. It could be produced via lactose isomerization catalyzed either by alkaline or enzyme. In this study, kinetics of lactose isomerization to prepare lactulose is investigated assuming the first order reaction. Kinetic parameters are figured out based on Arrhenius equation. The activation energy values are 107.513 (pH = 10), 103.934 (pH = 10.5), and 101.067 kJ/mol (pH = 11), respectively. The activation energy is inversely proportional to pH. Performances of CSTR model and PLUG model are investigated via simulation using Aspen Plus based on the kinetics. The simulation shows that the conversion percentage of lactose in PLUG reactor is greater than that in the CSTR reactor with the same reactor volume and reaction condition. The difference of the conversion percentage becomes larger as the reaction condition becomes severer with the smallest increase of 1.02% and the largest increase of 29.8% among the nine operating conditions. </p></div>","PeriodicalId":488,"journal":{"name":"Biomass Conversion and Biorefinery","volume":"15 16","pages":"23127 - 23133"},"PeriodicalIF":4.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploring algae-based biochar strategies for adsorptive removal of antibiotics: a green leap towards environmental sustainability 探索以藻类为基础的生物炭吸附去除抗生素的策略：迈向环境可持续性的绿色飞跃

IF 4.1 4区工程技术

Biomass Conversion and Biorefinery Pub Date : 2025-04-01 DOI: 10.1007/s13399-025-06750-y

Huy Hoang Phan Quang, Nga Thi Dinh, Phan Khanh Thinh Nguyen, Van-Huy Nguyen

{"title":"Exploring algae-based biochar strategies for adsorptive removal of antibiotics: a green leap towards environmental sustainability","authors":"Huy Hoang Phan Quang, Nga Thi Dinh, Phan Khanh Thinh Nguyen, Van-Huy Nguyen","doi":"10.1007/s13399-025-06750-y","DOIUrl":"10.1007/s13399-025-06750-y","url":null,"abstract":"<div><p>Antibiotics pose potential risks to human health and soil ecosystems due to their widespread use in treating bacterial infections. Algae-based biochar, a type of pyrogenic black carbon derived from abundant and low-cost resources, has emerged as a promising alternative material for removing antibiotics. This paper critically evaluates the effectiveness of algae-based biochar in removing antibiotics from wastewater and water, focusing on activation and modification methods that significantly enhance its performance compared to pristine biochar. This work also systematically explores various types of algal biomass with strong potential for antibiotic adsorption in aqueous media. Furthermore, this review summarizes key aspects of adsorption kinetics, isotherms, thermodynamics, and the underlying mechanisms involved. The primary mechanisms for antibiotic adsorption onto surfaces of algae-based biochar include π-π interactions, pore filling, electrostatic interaction, and H-bonding. In most cases, the pseudo-second-order and Langmuir models accurately describe the adsorption data. Thermodynamic studies indicate that the adsorption of most antibiotics onto algae-based biochar is a spontaneous and endothermic process. This review offers a comprehensive understanding of algae-based biochar as sustainable and practical materials for antibiotic adsorption, considering their economic, social, and environmental perspectives. It also highlights their potential for renewable and low-cost production to remediate contaminated aqueous solutions.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":488,"journal":{"name":"Biomass Conversion and Biorefinery","volume":"15 18","pages":"24715 - 24754"},"PeriodicalIF":4.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145190320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparative study of raw Pinus sylvestris sawdust and its activated carbon for chemical oxygen demand and polyphenols removal from Olive Mill Wastewater 生松木屑及其活性炭去除橄榄厂废水中化学需氧量和多酚的比较研究

IF 4.1 4区工程技术

Biomass Conversion and Biorefinery Pub Date : 2025-03-31 DOI: 10.1007/s13399-025-06814-z

Sabah Elamraoui, Nouhaila Asdiou, Wafaa Boumya, Rachid Elkaim Billah, Mounir El Achaby, Noureddine Barka, Edvina Lamy, Fatima Ezzahrae Alaoui, Younes Chhiti, Rachid Benhida, Mounia Achak

{"title":"Comparative study of raw Pinus sylvestris sawdust and its activated carbon for chemical oxygen demand and polyphenols removal from Olive Mill Wastewater","authors":"Sabah Elamraoui, Nouhaila Asdiou, Wafaa Boumya, Rachid Elkaim Billah, Mounir El Achaby, Noureddine Barka, Edvina Lamy, Fatima Ezzahrae Alaoui, Younes Chhiti, Rachid Benhida, Mounia Achak","doi":"10.1007/s13399-025-06814-z","DOIUrl":"10.1007/s13399-025-06814-z","url":null,"abstract":"<div><p>This study investigates the treatment of Olive Mill Wastewater through adsorption using Raw Sawdust and Activated Carbon derived from Pinus sylvestris sawdust. Adsorption efficiency was evaluated by adjusting key parameters such as pH, adsorbent dose, contact time, temperature, particle size, and stirring speed. Adsorption experiments were performed using One-Factor-At-a-Time and Box-Behnken design to determine the optimal conditions for chemical oxygen demand (COD) and polyphenols removal. The experimental results revealed COD and polyphenols removal efficiencies of 47% and 74% under different conditions. RS was impregnated with H<sub>3</sub>PO<sub>4</sub> (72%) and carbonized at 600 °C to produce AC, which resulted in 83.74% polyphenol and 61.15% COD removal under optimal conditions: pH 12, 0.62 g adsorbent, and 4 h contact time. The activation process greatly improved the adsorptive performance of raw sawdust, leading to a significant enhancement in adsorption capacities (Q<sub>e</sub>). For chemical oxygen demand, the capacity increased from 400 mg/g with RS to 3145 mg/g with activated carbon, while for polyphenols, it improved from 38 mg/g to 250 mg/g. Desorption experiments yielded competitive recovery rates of 92% for COD and 24% for polyphenols. The adsorption mechanism was validated through isothermal and kinetic evaluation, showing that COD removal followed a pseudo-second-order model with monolayer adsorption described by the Langmuir isotherm. In contrast, polyphenol adsorption adhered to a pseudo-first-order model with multilayer adsorption described by the Freundlich isotherm. These findings highlight the superior efficiency of AC compared to RS, offering a sustainable and cost-effective solution for olive mill wastewater treatment.</p></div>","PeriodicalId":488,"journal":{"name":"Biomass Conversion and Biorefinery","volume":"15 18","pages":"25141 - 25169"},"PeriodicalIF":4.1,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145190317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pyrolytic performance and kinetic analysis of non-catalytic and catalytic pyrolysis of bamboo powder and red algae 竹粉和红藻非催化和催化热解性能及动力学分析

IF 4.1 4区工程技术

Biomass Conversion and Biorefinery Pub Date : 2025-03-31 DOI: 10.1007/s13399-025-06810-3

Shri Ram, Xiaoke Ku, Vikul Vasudev, Zishuo Wang

{"title":"Pyrolytic performance and kinetic analysis of non-catalytic and catalytic pyrolysis of bamboo powder and red algae","authors":"Shri Ram, Xiaoke Ku, Vikul Vasudev, Zishuo Wang","doi":"10.1007/s13399-025-06810-3","DOIUrl":"10.1007/s13399-025-06810-3","url":null,"abstract":"<div><p>This study explored the impact of ZSM, KOH, and biochar catalysts on the pyrolysis behaviour and reaction kinetics of bamboo powder (BP) and red algae (RA). Thermogravimetric analysis (TGA) was conducted across catalyst concentrations of 6–12% to assess the pyrolysis process. The physicochemical characteristics of BP and RA were analysed, and three key pyrolysis performance indicators (i.e., the comprehensive pyrolysis index, devolatilization index, and pyrolysis stability index) were evaluated. The kinetic triplet was evaluated using the Friedman method combined with master plot analysis. The synergistic effect was also examined. Thermal degradation characteristics, including maximum degradation temperature and rates, varied with catalyst addition. Compared to non-catalytic pyrolysis, catalytic pyrolysis exhibited lower pyrolysis performance indicator values, although increasing the heating rate improved these values. The average activation energy for non-catalytic pyrolysis was 123.70 kJ/mol for BP and 152.18 kJ/mol for RA, but catalyst addition caused notable variations. For BP, average activation energy ranged from 110.97 to 141.90 kJ/mol with KOH, 114.82 to 125.29 kJ/mol with ZSM, and 108.13 to 125.97 kJ/mol with biochar. For RA, it ranged from 116.85 to 154.78 kJ/mol with KOH, 152.27 to 205.39 kJ/mol with ZSM, 148.70 to 174.88 kJ/mol with biochar. These findings offer valuable insights into the effects of catalysts on lignocellulosic and algal biomass feedstocks, shedding light on the underlying mechanisms and process efficiencies of pyrolysis.</p></div>","PeriodicalId":488,"journal":{"name":"Biomass Conversion and Biorefinery","volume":"15 18","pages":"25117 - 25129"},"PeriodicalIF":4.1,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145190196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0