Journal of chemical technology and biotechnology最新文献

{"title":"Reliable and efficient membrane processes for clean and sustainable production of fresh water from saline waste","authors":"Rachid Ouchn,&nbsp;Youssef Chaouqi,&nbsp;Ahmet Halil Avci,&nbsp;Said Gmouh,&nbsp;Efrem Curcio,&nbsp;Omar Cherkaoui,&nbsp;Miloudi Hlaibi","doi":"10.1002/jctb.7651","DOIUrl":"10.1002/jctb.7651","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Increasing water scarcity as a result of growing demand highlights the urgency for innovative solutions. Seawater desalination is emerging as a crucial answer, with direct contact membrane distillation (DCMD) emerging as a promising technology in this context. In particular, membranes produced from ionic liquids constitute a well-established avenue for the preparation of membranes by nonsolvent phase inversion (NIPS) in the field of desalination.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>Tests carried out as part of the DCMD, using PVDF membranes modified with the ionic liquid (IL) MPF₆ and TBAPF₆ synthesized during this study, in particular those containing 50% TBAFP₆, demonstrate a notable improvement in hydrophobicity (121.48°) and porosity(79%). The results suggest that the flux of the PVDF-TBAPF₆ membrane shows a clear improvement of 300% compared to the support alone. Various parameters such as salinity, temperature and flow rate were examined, highlighting their impact on membrane performance. The low energy parameters (<i>E</i>_a = 43.36 kJ mol⁻¹, ΔH^≠ = 40.86 kJ mol⁻¹) indicate a diffusion mechanism of vapor molecules, occurring by successive jumps through the IL interaction sites.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>Extensive experimental investigations have carefully anticipated the permeate flow in DCMD, aiming to efficiently extract pure water. DCMD is positioned as a promising technology for desalination and treatment of BRINE solutions. Therefore, this study can make a significant contribution to the expansion of DCMD by facilitating the prediction and optimization of operational parameters, thereby paving the way for expanded application of this technology. © 2024 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140594011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hybrid behaviors of CO2 absorption into blended DEEA-based solution for the improvement of capture performance","authors":"Dawei Wu,&nbsp;Yihan Yin,&nbsp;Yongchun Fan,&nbsp;Haizhou Lin,&nbsp;Hongxia Gao,&nbsp;Zhiwu Liang","doi":"10.1002/jctb.7650","DOIUrl":"10.1002/jctb.7650","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>At present, the chemical absorption method of CO₂ capture is considered to be an effective means to reduce carbon emissions. The development of blended amine systems with excellent CO₂ capture performance is the focus of research.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULT</h3>\u0000 \u0000 <p>The hybrid behaviors of <i>N</i>,<i>N</i>-diethylethanolamine (DEEA) with addition of monoethanolamine (MEA), 2-(methylamino)ethanol(MAE) and 2-((2-aminoethyl)amino)-ethanol(AEEA) as absorbents were investigated and developed to reduce the energy consumption for solvent regeneration in the CO₂ capture process. The equilibrium solubility of CO₂ for blended DEEA/MEA, DEEA/MAE and DEEA/AEEA with a series of molar ratios (0.0:2.0, 0.5:1.5, 1.0:1.0, 1.5:0.5 and 2.0:0.0) was examined. The experimental results showed that the values of CO₂ equilibrium solubility of amine blends exhibited a compromise behavior between each individual amine solution. Additionally, the effects of molar ratios on the relative CO₂ absorption rate, regeneration rate and CO₂ cyclic capacity for the tested amine blends were studied using an improved rapid absorbent screening method.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>The experimental data showed that the blended DEEA/MAE solution exhibits much higher CO₂ cyclic capacity than that of DEEA/AEEA under the nitrogen atomic conservation. However, the mixing DEEA and AEEA could obviously reduce the CO₂ equilibrium solubility and CO₂ cyclic capacity compared with that of individual AEEA solution, indicating the DEEA had an inhibiting effect on AEEA. Furthermore, the mass transfer performances of DEEA, DEEA/MAE and DEEA/AEEA were tested in order to validate the accuracy of the improved rapid absorbent screening method. © 2024 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140570173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Absorption performance and mechanism of volatile organic compounds by phosphonium ionic liquids with different anions","authors":"Jie Kang,&nbsp;Shijian Lu,&nbsp;Jiamei Zhu,&nbsp;Lin Shi,&nbsp;Bingqian Liu","doi":"10.1002/jctb.7648","DOIUrl":"10.1002/jctb.7648","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>The emission of volatile organic compounds (VOCs) seriously harms the environment and human health. The prevention and control of VOC pollution is a major challenge in the research field. Aiming at VOC pollution treatment using green solvents, the absorption of trichloromethane by synthesized tributyl(propyl)phosphonium bis(trifluoromethylsulfonyl)imide ([P₄₄₄₃] [Tf₂N]), tributyl(propyl)phosphonium tetrafluoroborate ([P₄₄₄₃] [BF₄]), tributyl(propyl)phosphonium trifluoroacetic acid ([P₄₄₄₃] [CF₃COO]) and xylene by trioctyl(propyl)phosphonium bis(trifluoromethylsulfonyl)imide ([P₈₈₈₃] [Tf₂N]) and trioctyl(propyl)phosphonium tetrafluoroborate ([P₈₈₈₃] [BF₄]) were experimentally measured. The mechanism of trichloromethane and xylene absorption by phosphonium-based ionic liquids (PILs) with different anions was further discussed through simulation calculation.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>PILs process excellent absorption capacity, such as [P₄₄₄₃] [CF₃COO], with static saturation absorbing capacity up to 2.843 g g⁻¹ for trichloromethane. PILs have a certain selective absorption ability for xylene, which has the highest absorption for <i>o</i>-xylene, reaching 1.462 g g⁻¹. The absorption energy data also prove that [CF₃COO]⁻ anion preferentially interacts with trichloromethane. Combined with the most stable structures of VOCs absorbed by PILs, the results of the Mulliken charge and frontier molecular orbitals indicate that PIL anions play a major role in chlorinated alkanes, and form hydrogen bonds with them. In addition, the cation can form C<span></span>H···π bond interaction with xylene.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>The experimental and calculated results showed that PILs are a promising adsorbent for trichloromethane and xylene. The study provides a reference for PILs designed to deal with VOCs in the future. © 2024 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140570537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Extraction and separation of potassium, zinc and manganese issued from spent alkaline batteries by a three-unit hydrometallurgical process","authors":"Noelia Muñoz García,&nbsp;Beatriz Delgado Cano,&nbsp;José Luis Valverde,&nbsp;Michèle Heitz,&nbsp;Antonio Avalos Ramirez","doi":"10.1002/jctb.7649","DOIUrl":"10.1002/jctb.7649","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Batteries play a vital role in meeting global energy needs. When their life cycle concludes, improperly discarded spent batteries can pose environmental risks primarily due to their metal content. In this sense, the recycling of metals contained in spent batteries could mean a huge advantage if they are extracted and purified using environmentally friendly processes.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>In this study, the recovery of potassium (K), zinc (Zn) and manganese (Mn) from alkaline batteries was performed using a hydrometallurgical process consisting of neutral, acid and acid reductive leaching steps at room temperature and atmospheric pressure to extract K, Zn and Mn. In the neutral leaching step, 76.8 ± 3.4 (wt. %) of the K present in the spent batteries was extracted. Thus, in the acid leaching step, 90.9 ± 0.1 (wt. %) of the initial Zn and 36.7 ± 0.4 (wt. %) of the initial Mn was extracted using sulfuric acid (H₂SO₄) 2 M. In a subsequent acid reductive leaching step using H₂SO₄ 2 M and oxygen peroxide (H₂O₂) 0.8 M as reducing agent, 8.7 ± 0.1 (wt. %) of the initial Zn and up to 49.4 ± 0.2 (wt. %) of the initial Mn were extracted.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>The three-unit process led to an overall extraction of 99.6 ± 0.3 (wt. %) of Zn and 86.1 ± 0.1 (wt. %) of Mn. Regarding the latter step, the extraction was not 100% because Mn complexes which are nearly insoluble were generated. This shows that extraction of valuable minerals from industrial residues is possible by hydrometallurgical processes. © 2024 The Authors. <i>Journal of Chemical Technology and Biotechnology</i> published by John Wiley &amp; Sons Ltd on behalf of Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jctb.7649","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140570335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Selective extraction of 1,3-propanediol by phenylboronic acid-based ternary extraction system","authors":"Lusheng Huang,&nbsp;Xu Zhou,&nbsp;Nasha Wu,&nbsp;Yaqin Sun,&nbsp;Zhilong Xiu","doi":"10.1002/jctb.7647","DOIUrl":"10.1002/jctb.7647","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Conventional methods for the separation of 1,3-propanediol (1,3-PDO) are problematic in many ways. The study of a simple and efficient separation process was the key to solving the bottlenecks that have restricted the large-scale development of 1,3-PDO. In order to solve the difficulty of separating 1,3-PDO from fermentation broths, a ternary selective extraction system was constructed to separate 1,3-PDO from a simulated solution and fermentation broth.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>In this study, quantum chemistry calculation and wave function analysis showed that the reaction between phenylboronic acid and 1,3-PDO is thermodynamically feasible, stable and covalently reversible. The ternary extraction system was composed of 1-naphthylboric acid, dichloromethane and Aliquat 336. After optimization of the extraction conditions, a high extraction efficiency of 82.6% could be achieved for 1,3-PDO. Meanwhile, the stripping recovery of 1,3-PDO was over 90%, with a high purity (98.6%), from a simulated solution using 0.4 mol L⁻¹ hydrochloric acid as stripping solution. The extraction selectivity of 1,3-PDO to glycerol, acetic acid and butyric acid in the fermentation broth reached 12.9, 230.6 and 233.7, respectively, implying a high selective performance compared with the aldehyde-based traditional reactive extraction.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>The ternary extraction system exhibited good extraction performance, highlighting the potential for selective extraction of diol biochemicals from fermentation broths. © 2024 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140570171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ion-imprinted thiosalicylichydrazide-based sorbents for selective recognition of mercury(II) ions","authors":"Duna AK Alenazi,&nbsp;Nasser A Alamrani,&nbsp;Fahad M Almutairi,&nbsp;Fatimah A Alotaibi,&nbsp;Moustafa M Foud,&nbsp;Hanan MA Al-Sayed,&nbsp;Nadia H Elsayed","doi":"10.1002/jctb.7646","DOIUrl":"10.1002/jctb.7646","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>The study of removing heavy metals from water through the use of chelating adsorbents is an emerging and critical area of research. However, the challenge lies in the lack of specificity that these adsorbents often exhibit towards individual metals.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>In addressing this challenge, we have synthesized a novel chelating polymer, thiosalicylichydrazidine-modified poly(acrylonitrile-<i>co</i>-divinylbenzene) copolymer (TSH-P), demonstrating a high affinity for Hg²⁺ ions. The crosslinking of the Hg²⁺/TSH-P complex with a glyoxal crosslinking agent effectively encapsulates Hg²⁺ ions, stabilizing the functional chelating groups within the coordination geometry of Hg²⁺. The ions were subsequently removed with EDTA/HNO₃, producing a sorbent imprinted with Hg²⁺ ions (Hg-IIP). Analytical techniques were employed for a detailed examination of each synthesis step, confirming the successful chelation of Hg²⁺. Notably, the synthesized Hg-IIP showed significant selectivity for Hg²⁺ over other metal cations, with an optimal adsorption pH of 5 and a maximum capacity of 350 mg g⁻¹. The adsorption process was found to closely follow the Langmuir isotherm model, with kinetics that adhered to the pseudo-second-order model.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>This study introduces a highly selective chelating polymer for the removal of Hg²⁺ ions from water, highlighting its effectiveness and potential for specificity in heavy metal remediation. The use of analytical techniques to confirm the successful synthesis and chelation process, alongside the demonstrated selectivity and high capacity of the sorbent, underscores the polymer's utility in addressing the challenge of removing heavy metals from aqueous solutions. © 2024 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140570159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on the influence mechanism of carbothermal reduction and selective leaching of valuable metals in spent lithium batteries","authors":"Shiteng Qin,&nbsp;He Yang,&nbsp;Yuhuan Li,&nbsp;Bern Klein,&nbsp;Shenghua Yin,&nbsp;Pengyun Xu,&nbsp;Hongyu Zhao","doi":"10.1002/jctb.7645","DOIUrl":"10.1002/jctb.7645","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Exploring an innovative method for precious metal recovery from spent batteries, our study combines hydrometallurgy and pyrometallurgy, focusing on pivotal carbothermal reduction. This crucial phase enhances the leachability of metals by significantly reducing their valence. To evaluate the effect of novel carbon (C) materials on this reduction process, our study synthesized two types of nanoporous Cs, Al-PCP-800 and ZIF-8-800, found in electrode materials. Their carbothermal reduction efficacy was compared to activated (A)C using thermogravimetric analysis.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>The experimental findings revealed that ZIF-8-800 exhibits superior reducibility, initiating and reaching peak weight loss rate at a lower temperature of 692.01 °C with a peak of 32.27%/°C. Under the optimized conditions (roasting temperature 750 °C, time 3 h, C content 20%, 2.75 mol L⁻¹ H₃PO₄ concentration, 40 °C leaching temperature, liquid-to-solid ratio of 6 mL g⁻¹, leaching time 10 min) the leaching efficiency of lithium (Li) and manganese (Mn) reached 100%, indicating complete extraction with ZIF-8-800. However, cobalt (Co) and nickel (Ni) leaching with ZIF-8-800 was low (3.22%, 2.06%). Al-PCP-800 showed slightly less leaching efficiency for Li and Mn, but higher efficiency for Co and Ni. Activated C led to incomplete Li and Mn extraction, with higher Co and Ni leaching, diminishing the process's selectivity.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>The study confirms that the C material in carbothermal reduction significantly impacts metal leaching efficiency and selectivity. ZIF-8-800 was the most effective for Li and Mn leaching, outperforming Al-PCP-800 and AC in selectivity. This underscores ZIF-8-800's potential to improve metal recovery from spent batteries. © 2024 The Authors. <i>Journal of Chemical Technology and Biotechnology</i> published by John Wiley &amp; Sons Ltd on behalf of Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jctb.7645","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140323711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Catalase-functionalized ZnO and graphene oxide used as electrocatalyst for the selective detection of hydrogen peroxide","authors":"Swati Sharma,&nbsp;Utkarsh Jain,&nbsp;Warren Rosario,&nbsp;Varshika Singh,&nbsp;Vinita Hooda,&nbsp;Nidhi Chauhan","doi":"10.1002/jctb.7644","DOIUrl":"10.1002/jctb.7644","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>This study focuses on the fabrication of a biosensor for the electrocatalytic and selective hydrogen peroxide (H₂O₂) recognition with bovine liver catalase (CAT) immobilized over a cysteine (c) modified zinc oxide nanoparticles/graphene oxide (c-ZnO/GO) interface. The selectivity and sensitivity of the biosensor were augmented by the use of CAT and GO, respectively. The problem of CAT activity inhibition by GO was specifically solved by the incorporation of ZnO. Also, the cystine functionalization helped in better immobilization of CAT.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>This unique approach was first validated with <i>in silico</i> computations that calculated the binding affinities to study the interactions between different components of the biosensor. The electrochemical studies confirmed the step-by-step modification of the sensor, where along with GO, c-ZnO nanoparticles also showed excellent electro-conductivity by fundamentally improving the peak currents towards H₂O₂. The proposed bio-nano interface exhibited superb electrocatalytic performance and specific detection capability for H₂O₂ across a broad linear range (0.1 to 40 μmol L⁻¹), featuring a low detection limit (0.1 μmol L⁻¹), as well as commendable reproducibility and storage durability. Furthermore, the biosensor yielded satisfactory outcomes for H₂O₂ detection in milk samples.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>Sensing performance of nano-bio interfaces can be augmented by using the appropriate nano-composites and their efficacy confirmed through computational techniques such as molecular docking. The biosensor can be further repurposed into a wearable device by integration with lab-on-a-chip platforms. © 2024 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140323720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High level of 1,3-propanediol production from crude glycerol by Clostridium strain BOH3: critical roles of inoculum and substrate concentration","authors":"Gobinath Rajagopalan,&nbsp;Akanksha Jain,&nbsp;Venkata Giridhar Poosarla,&nbsp;Chandraraj Krishnan,&nbsp;Kun Lin Yang","doi":"10.1002/jctb.7643","DOIUrl":"10.1002/jctb.7643","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>1,3-Propanediol (PDO) is a raw material/specialty chemical/additive in several industrial applications. A new wild-type <i>Clostridium</i> strain BOH3 can utilize crude glycerol (CG) and produce PDO. This investigation reveals its potential for PDO production from CG.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>Initially, inoculum of strain BOH3 was cultured from reinforced clostridial medium (RCM) with glucose (medium-A), and modified-RCM with glycerol (medium-B). While fermenting 20 g L⁻¹ glycerol, the cells cultivated from medium-A produced 5.75 g L⁻¹ PDO (as major product) with 3.10 g L⁻¹ butanol (byproduct), whereas the cells cultivated from medium-B produced 11.01 g L⁻¹ PDO with 2.50 g L⁻¹ butyric acid and 1.01 g L⁻¹ acetic acid, with no butanol produced. To enhance PDO production from the batch-process, various parameters including pure glycerol/CG concentration (80 g L⁻¹), inoculum age (15 h) and size (12.50%v/v) of cells from medium-B, initial medium-pH (pH 6.4) and incubation temperature (39 °C) were studied; the optimal values obtained are given in their respective parenthesis. Under optimal conditions, PDO production was 42.58–47.15 g L⁻¹ (0.65–0.79 mol-_PDO/mol-_glycerol) from CG-based rich/mineral media. Furthermore, fed-batch fermentation with 50–80 g L⁻¹ initial CG-concentration was tested to enhance the PDO production. Among these, 60 g L⁻¹ initial CG-concentration assisted strain BOH3 in utilizing a high level of CG (~174 g L⁻¹); it supported a higher-titer of PDO production (103.55–116.45 g L⁻¹), with the highest yield (0.72–0.81 mol_−PDO/mol_−glycerol) ever reported.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p><i>Clostridium</i> strain BOH3 shows the potential to support a high titer (&gt;116 g L⁻¹) with the highest yield (&gt;0.80 mol mol⁻¹) of PDO production from CG (a waste). It can be considered for industrial-scale PDO production. © 2024 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140302057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Catalytic role of biogenic gold nanoparticles in improving Cr(VI) removal efficiency of biocathode microbial fuel cells","authors":"Shien Tang,&nbsp;Xinglei Zhuang,&nbsp;Wanqi Zhao,&nbsp;Jinhua Liang,&nbsp;Yang Zeng,&nbsp;Fengxue Xin,&nbsp;Weiliang Dong,&nbsp;Honghua Jia,&nbsp;Xiayuan Wu","doi":"10.1002/jctb.7635","DOIUrl":"10.1002/jctb.7635","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Biogenic metal nanoparticle-modified electrodes have a promising prospect for improving the efficiency of microbial fuel cells (MFCs) for hexavalent chromium (Cr(VI))-containing wastewater treatment. In this study, a graphene (GO) electrode was modified with chemical gold nanoparticles (ChemAu) and biogenic gold nanoparticles (BioAu), respectively, and the two modified electrodes were then used as MFC biocathode electrodes to treat Cr(VI)-containing wastewater.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>The results demonstrated that the BioAu/GO biocathode-based MFC obtained the highest power density (95.78 ± 1.11 mW m⁻²) and Cr(VI) removal rate (2.17 ± 0.51 mg L⁻¹ h), which were 13.19 and 1.03 times higher than those of the graphite paper biocathode-based MFC, respectively. The Cr(VI) removal efficiency of the BioAu/GO biocathode-based MFC under close-circuit condition reached 87.61 ± 0.19%, which was 3.74 times higher than that recorded under open-circuit conditions, indicating the critical role of the bioelectrochemical reduction reaction mediated by the BioAu/GO biocathode on Cr(VI) removal.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>The BioAu/GO electrode first confirmed its superior performance to the ChemAu/GO electrode in Cr(VI)-reducing MFCs due to its excellent material properties. This study provides a technical reference for the exploration of efficient bioelectrode materials based on biogenic metal nanoparticles for MFCs to treat recalcitrant pollutant-containing wastewater. © 2024 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140302054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}