Journal of chemical technology and biotechnology最新文献

{"title":"Removal of carbamazepine, sulfamethoxazole and aspirin at municipal wastewater treatment plant of Astana, Kazakhstan: paths to increase the efficiency of the treatment process","authors":"Arailym Kamal,&nbsp;Yerkanat N Kanafin,&nbsp;Aliya Satayeva,&nbsp;Jong Kim,&nbsp;Stavros G Poulopoulos,&nbsp;Elizabeth Arkhangelsky","doi":"10.1002/jctb.7713","DOIUrl":"10.1002/jctb.7713","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Medical substances are utilized around the world, and their accumulation in nature is a global concern. This work aimed to identify three priority pharmaceuticals discharged into the domestic sewage stream of Astana city (Kazakhstan). Samples of municipal wastewater were taken before and after the wastewater treatment plant (WWTP) over a period of 13 months. The performed experiments demonstrated that there are seasonal variations in the priority pharmaceuticals – carbamazepine (CBZ), sulfamethoxazole (SMX) and aspirin (ASP) – identified in the wastewaters.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>The non-conventional WWTP of Astana city, which includes a sequence of treatment processes, showed 2–100% removal of these compounds with the following influent concentrations from the entering stream: 12.5–185.6 ppb (μg L⁻¹) for CBZ, 2.6–51.2 ppb for SMX and 1.9–199.8 ppb for ASP. Laboratory-scale experiments revealed that the application of the membrane separation technique, i.e. ultrafiltration, is able to provide improved removal of these pharmaceuticals. The removal of ASP, CBZ and SMX by phase inversion polyethersulfone and track etch (TE) polycarbonate membranes was investigated. Filtration with TE membrane demonstrated 39–97% removal of the primary pharmaceuticals from the wastewater.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>Filtration with TE membrane was recognized as an affordable and efficient supplementary treatment step. The addition of the TE separation process in the Astana WWTP could potentially improve the removal of the studied pharmaceuticals along with other medical substances. The reported results hold substantial significance, particularly for rapidly expanding urban centers and developing nations. This is especially crucial as there is a scarcity of data regarding the treatment of pharmaceuticals in municipal wastewater for these regions. © 2024 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"99 11","pages":"2248-2258"},"PeriodicalIF":2.8,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141777289","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":"Enhanced CO2 capture and stability of MgO modified with alkali metal nitrates and carbonates at moderate temperature","authors":"Shuaipeng Li,&nbsp;Neng Guo,&nbsp;Dongdong Zhu,&nbsp;Dazhan Jiang,&nbsp;Zhenting Chen,&nbsp;Shengwen Chen,&nbsp;Zhiguo Sun,&nbsp;Jifen Wang","doi":"10.1002/jctb.7717","DOIUrl":"10.1002/jctb.7717","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Magnesium oxide (MgO) is favored for solid-state carbon dioxide (CO2) capture due to its high theoretical adsorption capacity, abundant reserves, low cost, and environmental friendliness. However, its practical application in industry is hindered by low CO2 adsorption capacity under moderate operating conditions. In this work, MgO was modified by a deposition method using LiNO3, NaNO3, KNO3, Na2CO3 and K2CO3 as additives.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>The study determines optimal ratios within the [(Li, Na, K)x − (Na, K)]y/MgO system, specifically identifying x = 0.5 and y = 0.15 as most effective. At 275 °C under pure CO2 conditions, the adsorption capacity peaks at 0.631 g CO₂ g⁻¹ adsorbent. Effective regeneration of the adsorbent occurs at 400 °C under 100% N2 for 15 min. Under Integrated Gasification Combined Cycle (IGCC) conditions, the adsorption capacity stabilizes at 0.462 g g⁻¹ after 20 cycles, representing a 25% decrease from initial capacity.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>Experimental findings demonstrate that the inclusion of alkali metal salts in MgO precursors enhances the adsorbent's microstructure, thereby improving its CO2 capture efficiency and bolstering cycling stability. This research enhances our understanding of the factors influencing CO2 adsorption and cyclic stability in alkali metal salt-promoted MgO, providing valuable insights for further refinement in the formulation and synthesis protocols of MgO-based CO2 adsorbents. © 2024 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"99 11","pages":"2289-2299"},"PeriodicalIF":2.8,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141777290","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 cracking of oleic acid to generate aviation kerosene using platinum–modified ZSM–5 nanosheets","authors":"Haoyu Liu,&nbsp;Jingye Ma,&nbsp;Hong Yuan,&nbsp;Xiang Shi","doi":"10.1002/jctb.7714","DOIUrl":"10.1002/jctb.7714","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>A series of Pt@NZSM–5 and Pt/NZSM–5 nanosheets having different Si/Al ratios were prepared <i>via</i> an <i>in situ</i> synthesis and impregnation method, respectively, using C₂₂H₄₅–N⁺(CH₃)₂–C₆H₁₂–N⁺(CH₃)₂–C₆H₁₃ (C_22–6–6) as the template agent. The oleic acid decarboxylation reaction was carried out using these materials under CO₂ atmosphere and the oleic acid cracking mechanism was inferred from the product distribution of the C8-C17 alkanes.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>The Pt@NZSM–5 and Pt/NZSM–5 was found to comprise thinner nanosheets and exhibited strong metal–substrate interactions. Pt@NZSM–5 nanosheets with a Si/Al molar ratio of 100 had thicknesses of only 8–9 nm along with a mesopore/micropore capacity ratio of 2.7, an acid content of 11 cm³/g STP and a high Pt₀/PtO_x ratio.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>The Pt@NZSM-5 and Pt/NZSM-5 nanosheets had an interconnected hierarchical system and a large number of metal active sites that facilitated the decarboxylation of oleic acid. The Pt@NZSM–5 nanosheets demonstrated excellent catalytic activity during the cracking of oleic acid under a CO₂ atmosphere, giving a yield of C8–C17 alkanes as high as 83.8% after 5 h at 320 °C. These Pt@NZSM–5 nanosheets also showed greater stability than the Pt/NZSM–5 specimens. © 2024 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"99 11","pages":"2259-2269"},"PeriodicalIF":2.8,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141777291","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":"Acetaminophen removal using porous activated carbon derived from corn cob: optimization and mass transfer modelling","authors":"Mohamad Razif Mohd Ramli,&nbsp;Noor Fazliani Shoparwe,&nbsp;Mohd Azmier Ahmad,&nbsp;Mohamad Firdaus Mohamad Yusop","doi":"10.1002/jctb.7712","DOIUrl":"10.1002/jctb.7712","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Acetaminophen, also known as paracetamol, has been notably detected in aquatic environments, including wastewater, surface water and drinking water, causing significant concern within the scientific and environmental research communities. This study focuses on two main objectives: (i) optimizing corn cob-based activated carbon (CCAC) through response surface methodology for the adsorption of acetaminophen and (ii) simulating the acetaminophen adsorption process using the polymath mass transfer (PMT) model.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>The optimized CCAC was prepared via physiochemical activation under microwave radiation (265 W power) for 6 min, with a KOH impregnation ratio of 0.50 g g⁻¹. This process resulted in a high Brunauer–Emmett–Teller surface area of 976.29 m² g⁻¹, accompanied by a corresponding pore volume of 0.39 cm³ g⁻¹ and a pore diameter of 2.38 nm. The adsorption study, employing differential initial concentrations (ranging from 5 to 30 mg L⁻¹) of acetaminophen, revealed a substantial adsorption capacity of 22.43 mg g⁻¹ (74.77%) at 30 °C and 20.74 mg g⁻¹ (69.13%) at pH 6. The PMT model indicated an adsorption capacity (<i>Q</i>_m) of 21.14 mg g⁻¹, with an error of 5.75%, demonstrating high precision compared to the experimental result. Additionally, the calculated <i>R</i>² values equal to or above 0.90 indicated strong agreement between the PMT model and experimental data.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>Thus, applying the PMT model proved to be economical and cost-effective, providing accurate predictions on surface area during adsorption performance compared to the time-consuming and costly process of conducting characterizations. © 2024 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"99 9","pages":"2088-2106"},"PeriodicalIF":2.8,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141648214","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":"Diols production from pyrolysis oil water-soluble fraction","authors":"Dan Luo,&nbsp;Shuqian Xia,&nbsp;Lixiao Guo,&nbsp;Yang Liu,&nbsp;Yuhang Zhang,&nbsp;Zhiting Gao,&nbsp;Yahua Gao","doi":"10.1002/jctb.7711","DOIUrl":"10.1002/jctb.7711","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>The production of value-added chemicals from pyrolysis oil or its fractions is of great significance for the valorization of biomass. Diols, including ethylene glycol (EG) and 1,2-propylene glycol (1,2-PG), are important bulk chemicals with widespread industrial applications. Here we investigated the production of diols from pyrolysis oil water-soluble fraction (WS) using a hybrid catalyst (Ni + H₂WO₄).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>Firstly, levoglucosan, glycolaldehyde and acetol, three main components in WS, were respectively selected as the single model compound, and their respective conversions into diols were investigated at different temperatures for different reaction times. The result showed the optimum reaction temperature and time were 180 °C and 2 h respectively, under which a EG yield of 53.8% and 1,2-PG yield of 5.2% were obtained from levoglucosan conversion, a EG yield of 98.6% was obtained from glycolaldehyde conversion, and a 1,2-PG yield of 98.5% was obtained from acetol conversion. The reaction pathway of levoglucosan conversion was analyzed. Secondly, the model mixture of levoglucosan, glycolaldehyde and acetol was used to simulate the real WS, and their conversion was investigated at different ratios of H₂WO₄ to Ni. The result showed the optimum catalyst composition was 0.15 g H₂WO₄ and 0.3 g Ni, under which a EG yield of 76.4% and 1,2-PG yield of 38.4% were obtained. Thirdly, the real original WS was converted under the optimum reaction conditions and the result only gave a EG yield of 19.1% and 1,2-PG yield of 25.8% (based on the carbon moles of main substrates), which were much less than the two yields of model mixture. That was related to the presences of other types of chemicals in original WS. After the original WS being adsorbed by activated carbon, the yields of EG and 1,2-PG could be increased to 39.2% and 37.9%, respectively.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>The presences of certain other types of chemicals (such as acids, furans, phenolics and cyclopentanones) in original WS inhibited the production of diols. The activated carbon adsorption could efficiently remove most of furans, phenolics and cyclopentanones in original WS and increased significantly the diols yields. © 2024 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"99 9","pages":"1955-1963"},"PeriodicalIF":2.8,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141649426","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 innovative phosphonate Schiff base adsorbent for molybdenum adsorption and its applications for molybdenum adsorption from spent hydrodesulfurization catalyst","authors":"Huda M. Younis","doi":"10.1002/jctb.7702","DOIUrl":"10.1002/jctb.7702","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>To investigate the recovery of molybdate from water and hydrodesulfurization catalysts, a novel synthesized phosphonate Schiff base, 4,4′-(((2,2-dimethylpropane-1,3-diyl) bis(azaneylylidene)) bis(methaneylylidene)) bis(2-methoxyphenol) (HMI) and 4-(((3-((4-(((S)-hydroxyhydrophosphoryl)oxy)-3-methoxybenzylidene) amino)-2,2-dimethylpropyl)imino)methyl)-2-methoxyphenyl hydrogen phosphonate (HIMP), was utilized. This study aimed to assess the structural and property aspects of this synthesized compound using diverse characterizations, including FTIR, Thermogravimetric Analysis (TGA), mass spectrometry (GC–MS), fluorescence transfer spectra, scanning electron microscopy (SEM), and ¹H-NMR, ¹³C-NMR, and ³¹P-NMR.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>The study systematically examined several factors controlling molybdate recovery, including temperature, adsorbent dosage, pH, interaction time, and molybdate concentration using the batch technique. Optimal sorption effectiveness was achieved at pH 2, with an interaction time of 40 min, a 0.06 g adsorbent dose, at ambient temperature. The newly devised adsorbent exhibited an impressive adsorption capacity (Qe) of 372.54 mg of Mo per gram, with empirical data fitting the Langmuir and D-R adsorption models. The kinetics of molybdate uptake followed second-order kinetics. Thermodynamic aspects, including ΔG°, ΔS°, and ΔH°, were also investigated, providing appreciated perceptions into the energetic dynamics of the sorption process. Additionally, molybdate adsorption in the occurrence of other ions was explored, highlighting the selectivity of the modified phosphonate Schiff base for molybdate removal.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>The study underscores the potential of the modified phosphonate Schiff base as a crucial adsorbent for molybdate elimination from both solutions and spent hydrodesulfurization catalysts. The findings offer important insights into the adsorption kinetics, thermodynamics, and selectivity of the adsorbent, enhancing our understanding of molybdate recovery processes and their broader applications. © 2024 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"99 9","pages":"2003-2026"},"PeriodicalIF":2.8,"publicationDate":"2024-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141649563","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":"Persulfate activation enhanced by sulfur-doped cobaltous tetroxide for rapid and efficient degradation of atrazine","authors":"Shanjun Liu,&nbsp;Shan Sun,&nbsp;Yahui Xu,&nbsp;Jianlin Zhang","doi":"10.1002/jctb.7710","DOIUrl":"10.1002/jctb.7710","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Atrazine is present in aquatic systems as a pesticide, and poses a serious threat to ecosystems and human health. The advanced oxidation technology based on persulfate is considered a promising approach for removing trace pesticides from water. The synthesis of a persulfate activator for the rapid and efficient degradation of atrazine was studied.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>A novel rod-like sulfur-doped Co₃O₄ (S-Co₃O₄) was prepared <i>via</i> the hard template method and used as a persulfate activator to degrade atrazine. The removal efficiency of atrazine (10 mM) could be up to 100% in the presence of peroxymonosulfate (1 mM) activated by S-Co₃O₄ (50 mg L⁻¹) within 7 min.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>The nanorod structure of S-Co₃O₄ is conducive to mass transfer and increases the probability of reaction between substances, and sulfur doping increases the interfacial charge transfer capability. The mechanism of atrazine degradation was mainly attributed to the combined effects of •OH and SO₄^•−, with the effect of SO₄^•− being more important. The main degradation pathways of atrazine are dichlorination, hydroxylation and dealkylation, corresponding to the cleavage of Cl1-C9, N5-C10 and N6-C11, respectively. © 2024 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"99 9","pages":"2080-2087"},"PeriodicalIF":2.8,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141613177","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":"Fast in-situ synthesis of mesoporous Prussian blue-silica nanocomposite for superior silver ions recovery performance","authors":"Ayman El-Sawaf,&nbsp;Dina A. Tolan,&nbsp;Maiada S. Abdelrahman,&nbsp;Islam Abd El-Hay,&nbsp;Mohamed Ismael,&nbsp;Abdelaal S. A. Ahmed,&nbsp;Emad A. Elshehy,&nbsp;Mahmoud T. Abdu","doi":"10.1002/jctb.7707","DOIUrl":"10.1002/jctb.7707","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Mesoporous-nanostructured silica-Prussian blue composite is a highly potential material for silver ions removal and recovery from wastewater. Intense interest has been shown in the use of Prussian blue (PB), one of the important coordinated materials and its analogues in removal of toxic and valuable ions.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> METHODS</h3>\u0000 \u0000 <p>The micro-emulsion template method enables the synthesis of Prussian blue (PB) within silica pores, yielding a nanostructured mesoporous silica-PB composite. This rapid synthesis technique allows for the direct fabrication of the composite from mixed precursor solutions within minutes. The resulting material is effective for selectively extracting silver ions from wastewater at a specific pH level.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS AND DISCUSSION</h3>\u0000 \u0000 <p>In summary, the synthesized SiO₂-Prussian blue composite was extensively analyzed using various techniques including XPS, HR-TEM, SEM, STEM-EDX elemental maps, TGA/TDA, and N₂ adsorption/desorption measurements. The composite exhibited a BET surface area of 203 m² g⁻¹ and a total pore volume of approximately 0.283 cm³ g⁻¹with mesopores centered around 20 nm. This mesoporous SiO₂-Prussian blue demonstrated significant effectiveness in removing silver ions, with a maximum adsorption capacity of 107.5 mg g⁻¹. The Langmuir and Sips isotherms showed the best fit among various adsorption isotherm types, with R² values exceeding 0.984. Additionally, kinetic analyses revealed that the pseudo-second-order model accurately described the adsorption of silver ions onto the synthesized adsorbent. The nano-particles exhibit remarkable long-term stability, maintaining good reproducibility even after five regeneration cycles. © 2024 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"99 9","pages":"1941-1954"},"PeriodicalIF":2.8,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141613180","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":"Novel base-catalyzed acylation of benzenediols with vinyl acetate: a Hirshfeld surface study","authors":"Imran Ali,&nbsp;Alexey Yu Isaev,&nbsp;Yana M Chichigina,&nbsp;Daniil D Nakov,&nbsp;Gulnara N Shigabaeva,&nbsp;Evgeny V Galunin,&nbsp;Marcello Locatelli,&nbsp;Zainab M Almarhoon","doi":"10.1002/jctb.7709","DOIUrl":"10.1002/jctb.7709","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>The present work describes the facile, fast and economic base-catalyzed acylation of benzenediols with vinyl acetate. The Hirshfeld surface analysis of benzene-1,4-diol <i>O</i>,<i>O</i>′-diacetate is also described. NaOH, KOH and K₂CO₃ were the bases used for the catalysis of the acylation of benzene-1,<i>x</i>-diols (<i>x</i> = 2, 3, 4) with vinyl acetate to obtain the corresponding <i>O</i>,<i>O</i>′-diacetyl derivatives.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>The yields were quite good, up to 99% under solvent-free conditions. This method represents an alternative ‘green’ process for the preparation of <i>O</i>-acetyl derivatives of hydroxyaryls. The benzene-1,4-diol <i>O</i>,<i>O</i>′-diacetate crystal structure was obtained and described using Hirshfeld surface analysis. A noticeable contribution of the C⋯H contacts is shown (16.7%), despite the insignificant area of the Hirshfeld surface occupied by the carbon atoms (9.4%). By using two-dimensional fingerprint plots, it was proved that C⋯H contacts were due to the presence of <i>π</i>-stacking. The O⋯H contacts (41.4%) were the most numerous ones, relating mainly to typical hydrogen bonds (<i>d</i>_e + <i>d</i>_i ≈ 2.6 Å). The high saturation of the C⋯H and O⋯H contacts (enrichment ratios (<i>E</i>) = 1.30 and 1.36, respectively), despite their smaller contribution to the overall surface as compared to the H⋯H contacts (<i>E</i> = 0.84), is shown.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>The novelty of this work is the development of a method based on an inexpensive, safe and easy-to-use catalyst (K₂CO₃). This method is fast with high yields. Besides, it may be used for acylation at an industrial scale. © 2024 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":"99 9","pages":"2069-2079"},"PeriodicalIF":2.8,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141585702","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":"Methacrylonitrile-based adsorbents for recovery of VFAs from fermentation broth","authors":"Vahideh Elhami,&nbsp;Sylwia Ronka,&nbsp;Boelo Schuur","doi":"10.1002/jctb.7701","DOIUrl":"10.1002/jctb.7701","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Adsorption is a promising affinity separation technique to target a sorbate in extremely dilute solutions. In this work, methacrylonitrile (MAN)-functionalized resins were investigated to recover volatile fatty acids (VFAs) from a mimicked fermentation broth as an alternative for the already known amine-based resins and non-functionalized poly(styrene-divinylbenzene) (PS-DVB), aiming for high VFA capacity and selectivity.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>Next to comparison with commercial PS-DVB resin, also several PS-DVB resins were synthesized as non-functionalized analogues for the new MAN-functionalized resins. For MAN-functionalized resins, the maximum equilibrium VFA loading of about 153 (g acid/kg adsorbent) was found, which is higher than the 125 (g acid/kg adsorbent) for the PS-DVB non-functionalized resins. The water uptake of the PS-DVB resins was with 0.53–0.87 (g water/g adsorbent) significantly lower than for the MAN-DVB resins taking up 0.99–1.85 (g water/g adsorbent).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>Overall, the MAN-functionalized adsorbents retained higher loading capacity for corresponding acid, compared to the PS-DVB resins, while also taking in more water. Acid uptake is due to the hydrogen bonding between the nitrile groups of the resins with carboxyl group of the acids. Moreover, none of the adsorbents displayed an affinity towards the salts present in the fermentation broth. © 2024 The Author(s). <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":"99 9","pages":"1996-2002"},"PeriodicalIF":2.8,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jctb.7701","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141585700","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}