Journal of chemical technology and biotechnology最新文献

{"title":"Effect of non-ionic frothers on bubble characteristics in flotation: a review","authors":"Gaochao Pan,&nbsp;Zhonglin Gao,&nbsp;Hongzheng Zhu,&nbsp;Jianqiang Yin,&nbsp;Qinhui Shi,&nbsp;Yong Zhang","doi":"10.1002/jctb.7777","DOIUrl":"https://doi.org/10.1002/jctb.7777","url":null,"abstract":"<p>The properties and synthesis of frothers have been the subject of scientific research for over a century owing to their extensive use in various industries. Given that the characteristics of bubbles are dependent on the nature of frother, such as in flotation slime, it is crucial to control the dosage of frother to achieve optimal effects. Excessive dosage leads to reagent waste whereas insufficient dosage results in resource waste, both hindering carbon emission reduction efforts. This paper provides a comprehensive review of existing literature regarding the impact of frothers on bubble behavior. The available literature demonstrates that the bubble size and velocity decrease as frother concentration increases. The underlying reasons for this phenomenon are discussed extensively. Furthermore, the relationship between bubble characteristics and hydrophile–lipophile balance (HLB) of frothers is examined. Finally, a correlation between bubble energy at critical coalescence concentration and HLB is established. These valuable insights for further investigation into frother properties. © 2024 Society of Chemical Industry (SCI).</p>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 3","pages":"493-507"},"PeriodicalIF":2.8,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143396862","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":"Fabrication of an antifouling and acid/alkali-resistant sulfonated polyethersulfone (S-PES)/polysulfate (PSE) composite ultrafiltration membrane and its application in the desalination of ulinastatin","authors":"Wei Wang,&nbsp;Peipei Li,&nbsp;Jiaqi Wang,&nbsp;Baiyu Xu","doi":"10.1002/jctb.7782","DOIUrl":"https://doi.org/10.1002/jctb.7782","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>An antifouling and acid/alkali-resistant sulfonated polyethersulfone (S-PES)/polysulfate (PSE) composite ultrafiltration (UF) membrane prepared via a nonsolvent-induced phase separation (NIPS) method was used for the purification of ulinastatin (UTI) as an examplar protein-based drug.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULT</h3>\u0000 \u0000 <p>The effect of the content of S-PES on the structure and UF performance of the S-PES/PSE composite UF membrane was investigated. The acid/alkaline resistance of the S-PES/PSE membranes was evaluated in the pH range 5–10 suitable for a UTI solution. UF desalination experiments were carried out on UTI elution collection solution, and the antifouling performance and long-term stability of S-PES/PSE composite UF membrane were evaluated. The results indicate that, for the optimal content of 4% S-PES, pure water flux increased from 120 to 726 L m⁻² h⁻¹, WCA decreased from 79.3° to 51.0°, and the rejection of UTI was 95.90% ± 1.1% compared to PSE. Compared with PES and PSF membranes, the flux recovery rate of the S-PES/PSE composite UF membrane was 80.63% (an increase of 32.48%), and the UTI adsorption was only 75.00 μg cm⁻² (a decrease of 88.00%) after simulated antifouling experiments.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>The S-PES/PSE composite UF membrane has excellent long-term stability, suggesting significant potential for application in the purification of protein-based drugs and in large-scale UTI purification. © 2024 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 2","pages":"400-415"},"PeriodicalIF":2.8,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143115012","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":"From coffee waste to nutritional gold: bioreactor cultivation of single-cell protein from Candida sorboxylosa","authors":"Omar Santiago Pillaca-Pullo,&nbsp;André Moreni Lopes,&nbsp;Nelson Bautista-Cruz,&nbsp;Waldir Estela-Escalante","doi":"10.1002/jctb.7778","DOIUrl":"https://doi.org/10.1002/jctb.7778","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Industrial effluents are continuously discharged into the environment. These wastewaters contain valuable compounds that can be reused for biotechnological applications. Coffee wastewater (CWW) is a powerful effluent that can be used for single-cell protein (SCP) production reaching important content (up to 80%). Several yeast species can be used for SCP production, but <i>Candida</i> species are commonly applied for this purpose (17 species reported including the novel <i>C. sorboxylosa</i>). In addition, SCP can be produced in bioreactors under controlled conditions under three operation modes. Thus, batch mode is frequently used but continuous mode presents interesting advantages in economic terms, although it has been poorly applied in SCP production.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>The initial evaluation under batch operation mode showed that volumetric oxygen transfer coefficient (<i>k</i>_L<i>a</i> of 101 h⁻¹) improved biomass production (1.39 g L⁻¹) and SCP yield (59.9%) in <i>C. sorboxylosa</i>. Thus, continuous mode was established at selected <i>k</i>_L<i>a</i> and feeding with optimized medium composed of 87.5% (v/v) CWW, 1.38 g L⁻¹ yeast extract, and 7.24 g L⁻¹ (NH₄)₂SO₄, in order to provided necessary nutrients. In this sense, the process presented higher values in dry cell weight and SCP productivity (0.57 and 0.29 g L⁻¹·h, respectively), achieving a 3.35- and 2.90-fold increase in biomass and protein productivity, respectively, compared to batch mode. The SCP from <i>C. sorboxylosa</i> exhibited an interesting essential amino acid profile under continuous mode (33.704%).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>The bioprocess highlights several advantages during bioreactor cultivation, including: (i) reduced energy consumption for temperature control; (ii) successful establishment of an initial continuous operation mode with promising performance; and (iii) SCP from <i>C. sorboxylosa</i> exhibited a notable composition of essential amino acids, which could be beneficial for potential use in animal feed. © 2024 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 2","pages":"360-368"},"PeriodicalIF":2.8,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143114309","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":"Electrochemical studies of ytterbium doped Cu/Co nanoparticles synthesized by green fabrication using Callistemon viminalis leaves extract","authors":"Zilla Zahra,&nbsp;Sadia Iram,&nbsp;Khuram Shahzad Ahmad,&nbsp;Sofia Khalid,&nbsp;Ghulam Abbas Ashraf,&nbsp;Mohammad Abul Farah","doi":"10.1002/jctb.7781","DOIUrl":"https://doi.org/10.1002/jctb.7781","url":null,"abstract":"&lt;div&gt;\u0000 \u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;h3&gt; BACKGROUND&lt;/h3&gt;\u0000 \u0000 &lt;p&gt;Utilization of phytochemicals for the preparation of metal oxides nanocomposites has been proven to be a best alternate of chemical synthesis methods. Here, we have extracted, isolated and characterized the phytochemicals of &lt;i&gt;Callistemon viminalis&lt;/i&gt; plant extract and utilized them as biofuel in the synthesis of Cu/Co and doped Cu/Co nanoparticles. &lt;i&gt;Callistemon viminalis&lt;/i&gt; has been shown to have reducing and stabilizing properties. The plant extracts contain a variety of bioactive substances, including tannins, vitamins, amino acids, saponins, inositol, alkaloids, flavonoids, and terpenes. The use of plant extracts in the synthesis of NPs is a quick, dependable, nontoxic, benign, environmentally friendly, and cost-effective method. Thus, in the present work, the &lt;i&gt;Callistemon viminalis&lt;/i&gt; leaves extract a synthesis of Cu/Co nanoparticles and ytterbium doped Cu/Co nanoparticles, and these nanoparticles were characterized by optical properties (UV), Fourier transform infrared (FTIR), scanning electron microscopy (SEM), X-rays diffraction (XRD), and electrochemical application.&lt;/p&gt;\u0000 &lt;/section&gt;\u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;h3&gt; RESULTS&lt;/h3&gt;\u0000 \u0000 &lt;p&gt;Synthesis of Cu/Co nanoparticles and ytterbium doped Cu/Co nanoparticles at room temperature have been successfully done using &lt;i&gt;Callistemon viminalis&lt;/i&gt; aqueous leaf extract. Products were confirmed by conducting UV- visible spectrophotometry, FTIR, SEM, and XRD confirming the formation of cubic shaped Cu/Co nanoparticles of average diameter of 14 nm. The aqueous leaf extract acted as a capping agent and the existence of organic functional groups were confirmed by FTIR. Upon varying the Yb content in Cu/Co, the particle's size obtained from SEM showed a decrease in size. The band gap energies were also reduced with Yb doping. The stability of the produced NPs was investigated using linear sweep voltammetry LSV on this special and innovative metal oxide electrode. The LSV analysis has shown an elevation in the scan rate detection with an increase in voltage. 55.6 μA current was detected at 10 V for Cu/Co NPs. Ytterbium doped nanoparticles have shown 471.3 μ current voltage value at scan rate of 10 V. Observed value of current of synthesized Cu/Co NPs was 5.7 μA and the observed current of doped Yb(Cu/Co) was 12.5 μA. The increase in current values of dopant Cu/Co nanoparticles is due to the higher pore volume and surface area of copper, which promotes the transfer of electrons, so the current density is greater of the doped material than the composite NPs. The electrical resistivity of Cu/Co nanoparticles has shown a decline with elevation in current indicating its semiconducting nature.&lt;/p&gt;\u0000 &lt;/section&gt;\u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;h3&gt; CONCLUSION&lt;/h3&gt;\u0000 \u0000 &lt;p&gt;In summa","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 2","pages":"393-399"},"PeriodicalIF":2.8,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143113420","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":"Light–dark cycles improve the 3HV molar fraction in PHBV produced by photoheterotrophic bacteria from odd-chain fatty acids and cheese whey","authors":"Virginia Montiel-Corona,&nbsp;Daniel Puyol,&nbsp;Germán Buitrón","doi":"10.1002/jctb.7779","DOIUrl":"https://doi.org/10.1002/jctb.7779","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) is the most promising biopolymer for replacing petroleum-derived plastics from polyhydroxyalkanoates (PHA) copolymers. The mechanical properties of PHBV improve as the content of the 3-hydroxyvalerate monomer (3HV) increases. However, there is no information about the effect of light/dark cycles on PHA composition produced by phototrophic purple bacteria. This work aimed to improve the molar fraction of 3HV in the PHBV copolymer formed by a mixed phototrophic culture enriched in <i>Rhodopseudomonas palustris</i>, combining the effect of the illumination regime and using odd-chain fatty acids and cheese whey as carbon sources.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>Under continuous lighting, the PHBV concentration (mg L⁻¹) and 3HV molar fraction (%) were 508 ± 25 mg L⁻¹ (1%), 193 ± 10 mg L⁻¹ (22%), 252 ± 10 mg L⁻¹ (1%), and 286 ± 10 mg L⁻¹ (3%) for valerate, propionate, lactate, and fermented cheese whey, respectively. Interestingly, under light/dark cycles, the 3HV molar fraction increased 23-fold when using valerate (light/dark cycle of 30 min), 12-fold with lactate, and 1.5-fold with fermented cheese whey. The PHBV content (% w/w) reached was 20–25%, 14–16%, 12–15%, and 8–12% for valerate, propionate, lactate, and fermented cheese whey, respectively.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>Combining odd-chain fatty acids and light–dark cycles was an excellent strategy to improve the 3HV molar fraction in PHBV. This study shows for the first time that the 3HV molar fraction production is positively affected by light/dark cycles using odd-chain fatty acids. Using light/dark cycles brings a double benefit: improving the molar fraction of 3HV in the polymer and decreasing the illumination-associated cost. © 2024 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 2","pages":"369-378"},"PeriodicalIF":2.8,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143112961","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":"Phytoremediation of soil co-contaminated with uranium and chromium by sunflower (Helianthus annuus L.) enhanced with slow-release composite chelating agent (EDTA/ammonium citrate)","authors":"Zixin Lin,&nbsp;Guanghui Wang,&nbsp;Zhongkui Zhou,&nbsp;Nansheng Deng,&nbsp;Xuewen Zhang","doi":"10.1002/jctb.7780","DOIUrl":"https://doi.org/10.1002/jctb.7780","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Soil in uranium mining areas is contaminated by uranium and associated heavy metals, posing a significant threat to human health and ecological security. Chelating agent assisted phytoremediation is a cost-effective and ecologically friendly remediation approach for uranium and associated heavy metals contaminated soil. In this work, a novel slow-release composite chelating agent (SR_CMC-g-CMCD-EDTA/AC) was fabricated using carboxymethyl chitosan-graft-carboxymethyl-β-cyclodextrin (CMC-g-CMCD) as a slow-release carrier and EDTA/ammonium citrate (AC) as a composite chelating agent through the spray drying method, which was used for phytoremediation of soil co-contaminated with uranium and chromium.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>CMC-g-CMCD exhibited superior slow-release performance for both EDTA and AC in comparison with CMC and CMCD. When applied to soil contaminated with uranium (U) and chromium (Cr), SR_CMC-g-CMCD-EDTA/AC effectively regulated the release of U and Cr. Sunflowers (<i>Helianthus annuus</i> L.) grown in treated soil showed a significant increase in U and Cr uptake by 70.55% and 35.55%, respectively, and reduced leaching losses by 34.88% and 37.42%.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>SR_CMC-g-CMCD-EDTA/AC not only assists in the phytoremediation of soil co-contaminated with U and Cr but also reduces the risk of leaching into groundwater during the soil phytoremediation process. SR_CMC-g-CMCD-EDTA/AC-assisted phytoremediation technology was an effective and environmentally friendly remediation means for the removal of U and heavy metals from contaminated soils in uranium mining areas. © 2024 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 2","pages":"379-392"},"PeriodicalIF":2.8,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143112990","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":"In Focus: Materials and the Environment Symposium (XXXI IMRC México)","authors":"Eddie Lopez Honorato,&nbsp;Rosendo Lopez Gonzalez,&nbsp;Leticia Velasco,&nbsp;Claudia Palacio","doi":"10.1002/jctb.7730","DOIUrl":"https://doi.org/10.1002/jctb.7730","url":null,"abstract":"","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"99 12","pages":"2487"},"PeriodicalIF":2.8,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142664634","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":"The efficacy of nano-cellulose-based composites in heavy metal removal from wastewater: a comprehensive review","authors":"Humberto Garcia Castellanos,&nbsp;Yashar Aryanfar,&nbsp;Soheil Mohtaram,&nbsp;Ali Keçebaş,&nbsp;Gülşah Karaca-Dolgun,&nbsp;Shabbir Ahmad,&nbsp;Abdullah Naser M. Asiri,&nbsp;Saiful Islam","doi":"10.1002/jctb.7775","DOIUrl":"https://doi.org/10.1002/jctb.7775","url":null,"abstract":"<p>This comprehensive study delves into the innovative application of nano-cellulose-based composites for addressing the multifaceted challenges of wastewater treatment. This review introduces the innovative use of nano-cellulose composites, particularly highlighting the novel synthesis routes that enhance their pollutant adsorption capabilities beyond conventional materials. These materials stand out for their regenerative properties and integration with functionalized matrix materials, marking significant advancements in sustainable wastewater treatment technologies. As the environmental and public health risks associated with untreated wastewater escalate, the development of efficient and sustainable treatment technologies has become crucial. Nano-cellulose composites, derived from natural and renewable sources, offer significant advantages, including high surface area, superior mechanical strength, and notable biodegradability. This review explores various synthesis methods—mechanical, chemical, and enzymatic—that enhance the adaptability of nano-cellulose composites to meet specific treatment needs. Main findings demonstrate these composites' effectiveness in removing a wide array of pollutants, including heavy metals, organic compounds, dyes, and microbial contaminants, with detailed removal capacities provided for each pollutant category in comparative tables. The potential for regeneration and reuse highlights their practical sustainability and economic viability. Future research should focus on improving production scalability and cost-effectiveness, assessing environmental impacts and ensuring regulatory compliance to advance the application of nano-cellulose composites in wastewater treatment. This study paves the way for these materials to become central to innovative, efficient, and eco-friendly wastewater management strategies. © 2024 Society of Chemical Industry (SCI).</p>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 2","pages":"291-312"},"PeriodicalIF":2.8,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143112362","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":"Enhancing sustainability and power generation from sewage-driven air-cathode microbial fuel cells through innovative anti-biofouling spacer and biomass-derived anode","authors":"Radwan A. Almasri,&nbsp;Nasser AM Barakat,&nbsp;Osama M Irfan","doi":"10.1002/jctb.7776","DOIUrl":"https://doi.org/10.1002/jctb.7776","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Recently, the concept of the membrane-less microbial fuel cell (MFC) has gained traction to avoid the high internal resistance that is created upon utilizing conventional membranes. Nevertheless, an overlooked problem arises from the ingress of oxygen from the cathode side into the anolyte solution, fostering the formation of biofilms by aerobic microorganisms on the cathode surface. This biofilm layer poses a formidable impediment, leading to cell disconnection. Moreover, low surface area of conventional anodes is another important issue behind the low power density generation. In this research, a novel approach to circumvent biofilm formation and achieve stable and high-power-density output from MFCs by harnessing a commercial antibacterial spacer is introduced.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Air-cathode, sewage-driven MFCs showed continuous power generation without the need for external microorganisms. Conversely, the absence of the innovative membrane resulted in a catastrophic power breakdown after 125 h of operation due to the formation of a dense biofilm layer on the cathode. Through the utilization of the proposed membrane strategy, stable power density output of 100 ± 8, 135 ± 11 and 142 ± 10 mW m⁻² with carbon cloth, carbon paper and carbon felt anodes, respectively, was achieved. Moreover, a novel anode is introduced from graphitization of grape tree branches. The proposed anode could increase the generated power to 516 ± 17 mW m⁻² from the sewage-driven air-cathode MFC, more than three times compared to the best conventional anode, carbon felt.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>This study provides significant solutions for sustainability, low-performance and high-cost problems of microbial fuel cells. © 2024 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 2","pages":"344-359"},"PeriodicalIF":2.8,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143121182","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":"Dual-functional UiO-66/g-C3N4 composites for photocatalytic pesticide removal and in situ adsorption of phosphate byproducts in water","authors":"Jinyun Song,&nbsp;Runying Bai,&nbsp;Bo Wu,&nbsp;Ruzhuang Zhang,&nbsp;Yuchao Yang,&nbsp;Yi Ding,&nbsp;Hexin Zhu,&nbsp;Haoxiang Yang,&nbsp;Siyu Zhao","doi":"10.1002/jctb.7773","DOIUrl":"https://doi.org/10.1002/jctb.7773","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>With the increasing global demand for food, a significant amount of organophosphorus pesticides is applied to farmland, leading to pollution as they are discharged into natural water bodies with agricultural runoff. This study employed a coupling approach, utilizing a 6:4 mass ratio of zirconium-based metal–organic framework UiO-66 and g-C₃N₄ through a grinding and annealing method to construct a Z-type heterojunction composite material named UG 6:4.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>This material is employed for photocatalytic removal of the representative organophosphorus pesticide, dichlorvos (DDVP), from water and simultaneous <i>in situ</i> adsorption of its inorganic phosphorus byproducts. Results demonstrate that for initial DDVP concentrations below 5 mg L⁻¹ (calculated as total phosphorus), both the mineralization rate under ultraviolet light irradiation with a wavelength of 365 nm and a power of 125 W and the adsorption rate of phosphorus were 100% when the pH was 6 and the UG 6:4 dosage was 0.2 g L⁻¹. The sheet-like g-C₃N₄ tightly envelops the surface of UiO-66, forming a Z-scheme heterojunction. This structure imparts UG 6:4 with enhanced light absorption, faster generation and separation of photogenerated electron–hole pairs compared to individual UiO-66 or g-C₃N₄, and the establishment of an internal electric field suppresses the recombination of photogenerated charge carriers.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>Consequently, UG 6:4 exhibits outstanding photocatalytic pesticide removal capabilities. Furthermore, UG 6:4 demonstrates specific adsorption of inorganic phosphorus through electrostatic attraction and ligand exchange. This study indicates that UG 6:4 is a promising dual-functional photocatalytic adsorbent with excellent application prospects. © 2024 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"100 2","pages":"313-326"},"PeriodicalIF":2.8,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143121073","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}