Journal of water process engineering最新文献

{"title":"Photocatalytic hydrogen production and sulfamerazine degradation via a novel dual S-scheme photocatalyst: Nanocomposite synthesis, characterization and mechanism insights","authors":"Zaina Algarni ,&nbsp;Hakim S. Sultan Aljibori ,&nbsp;Abdelfattah Amari ,&nbsp;Dheyaa J. Jasim ,&nbsp;M.A. Diab ,&nbsp;Heba A. El-Sabban ,&nbsp;Noureddine Elboughdiri ,&nbsp;Farruh Atamurotov","doi":"10.1016/j.jwpe.2024.106402","DOIUrl":"10.1016/j.jwpe.2024.106402","url":null,"abstract":"<div><div>Creating highly effective photocatalysts is crucial for harnessing solar energy to degrade pollutants and produce hydrogen (H₂). In this study, we successfully synthesized a novel dual S-scheme iron oxide (Fe₂O₃)/bismuth oxide (Bi₂O₃)/titanium dioxide (TiO₂) ternary photocatalyst using a straightforward method. This photocatalyst was employed for efficient photocatalytic water splitting and the degradation of the antibiotic sulfamerazine (SMZ) under visible light. Various characterization and photoelectrochemical techniques, including scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), Brunauer–Emmett–Teller surface area analysis (BET), photocurrent measurements, Mott-Schottky analysis, photoluminescence (PL), electrochemical impedance spectroscopy (EIS), and electron spin resonance (ESR), were utilized to analyze the synthesized materials. Among the synthesized nanocomposites, the 15 wt% Fe₂O₃/Bi₂O₃/TiO₂ (15FeBi/TiO₂) composite demonstrated exceptional photocatalytic efficiency, achieving 98 % SMZ degradation and a hydrogen production rate of 590.36 μmol/g·h. Experimental results, including scavenging tests and ESR findings, highlighted the crucial role of hydroxyl radicals (•OH) and superoxide radicals (•O₂⁻) in the photocatalytic process. Moreover, liquid chromatography-mass spectrometry (LC-MS) results proposed three degradation pathways, and quantitative structure-activity relationship (QSAR) analysis showed that the toxicity of intermediates was effectively reduced. The 15FeBi/TiO₂ photocatalyst also exhibited excellent reusability, retaining about 85 % of its initial activity after five cycles, and proved effective against various pollutants and in real water matrices. This research contributes to the design and development of high-activity heterojunction photocatalysts for superior clean energy generation and pollutant degradation under visible light.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"68 ","pages":"Article 106402"},"PeriodicalIF":6.3,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bi-functional activity of modified porous polysulfone membrane with Cu2O-GO nanostructures for ultrafiltration and organic pollutant degradation","authors":"Yeong Min Im ,&nbsp;Gowthami Palanisamy ,&nbsp;Sadhasivam Thangarasu ,&nbsp;Chaitany Jayprakash Raorane ,&nbsp;Seong Cheol Kim ,&nbsp;Tae Hwan Oh","doi":"10.1016/j.jwpe.2024.106339","DOIUrl":"10.1016/j.jwpe.2024.106339","url":null,"abstract":"<div><div>Water filtration and organic pollutant degradation are the emerging and reliable approaches used to address the issue of clean water scarcity by treating industrial and household wastewaters. In this study, we delved into the multi-functioning properties (pollutant separation, dye degradation, and anti-microbial activity) of hybrid membranes for water treatment applications. Highly uniform porosity of polysulfone (PSF) based composite membrane fabricated via quaternization process (mPSF) and efficient interconnection with Cu₂O nanocubes anchored graphene oxide (GO) nanofillers as hybrid mPSF-G:C membrane. The excellent interaction between nanofiller and polymer causes interfacial tensions, which may drive changes in the organic phase, resulting in effective porosity in the mPSF-G:C membrane. In the mPSF-G:C membrane, two distinct layers have been observed: the upper skin layer (a thin layer with numerous smaller diameters of pores) and the sup-layer (a sponge-like structure with numerous finger-like macro-voids with pores in its wall). In comparison to PSF, the mPSF-G:C membrane offers many improvements in water filtration, including enhanced mechanical strength, greater porosity (64.4 %), a lower water contact angle (57.4°), and higher water flux (1845 L/m²h). The hybrid membrane performs well in sonocatalytic RhB degradation, with PSF and mPSF-G:C membranes degrading 34 % and 76 %, respectively. Furthermore, the hybrid mPSF-G:C membrane has proven its antibacterial action against two distinct microorganisms, namely <em>S. aureus and E. coli</em>. Therefore, the hybrid mPSF-G:C membrane has the potential to be recognized as one of the most effective membranes for applications involving water filtration application and the degradation of organic pollutants in water.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"68 ","pages":"Article 106339"},"PeriodicalIF":6.3,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Removal of odorous and nitrogen chemicals by submerged nanofiltration","authors":"Ying Shi Chang,&nbsp;Sandrine Boivin,&nbsp;Takahiro Fujioka","doi":"10.1016/j.jwpe.2024.106377","DOIUrl":"10.1016/j.jwpe.2024.106377","url":null,"abstract":"<div><div>Odorous compounds such as geosmin and 2-methylisoborneol (2-MIB), and nitrogen ions such as ammonium (NH₄⁺), nitrite (NO₂⁻), and nitrate (NO₃⁻) are challenging chemicals for drinking water treatment. This study aimed at identifying the potential of submerged nanofiltration (NF) membrane treatment for removing these chemicals. In this work, tight NF membranes (p-ESNA and NF90) achieved high removal of odorous compounds (89–98 %) under varying feed temperatures (13–30 °C) and additional salt concentrations (NaCl = 10–20 mM), while a loose NF membrane (NF270) exhibited lower rejection (61–86 %). Conversely, the rejection of nitrogen ions by the two tight NF membranes was low in the submerged configuration (7–39 %), and their rejection significantly decreased with increasing feed salinity (−5–29 %). The loose NF membrane (NF270) even exhibited negative rejections (−4–6 %), likely due to a membrane charge imbalance induced by the Donnan effect, which was exacerbated by competitive divalent sulfate anions. The unsaturated electromigration of NO₂⁻ and NO₃⁻ anions, driven by the electric field of diffusion potential, can lead to negative rejection at low transmembrane flux. This study identified the capacity and limitations of submerged NF treatment for removing the problematic odorous and nitrogen chemicals.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"68 ","pages":"Article 106377"},"PeriodicalIF":6.3,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Chemical modification of Pinus walliichiana sawdust: Application in membrane system for efficient purification of groundwater containing Cd(II) and Ni(II)","authors":"Muhammad Imran Irfan ,&nbsp;Mahnoor Sadiq ,&nbsp;Lubna Zohra ,&nbsp;Abu Bakar Siddique ,&nbsp;Muhammad Yousaf ,&nbsp;Madiha Rubab ,&nbsp;Kishwar Urooj ,&nbsp;Ambreen Aziz ,&nbsp;Hira Ali ,&nbsp;Mehreen Fatima ,&nbsp;Hatem M.A. Amin ,&nbsp;Hassan A. Alhazmi ,&nbsp;Azhar Abbas","doi":"10.1016/j.jwpe.2024.106337","DOIUrl":"10.1016/j.jwpe.2024.106337","url":null,"abstract":"<div><div>In the Sargodha region of Pakistan, the concentrations of Cd(II) and Ni(II) ions are very high as compared to WHO and US EPA standards and may be one of the leading reasons for water-borne diseases in the population of this area. In the current research work, an eco-friendly, low-cost, effective, and reusable filter membrane system is developed. The cellulose sawdust of <em>Pinus walliichiana</em> (PWC) was treated with succinic anhydride to form <em>Pinus walliichiana</em> cellulose succinate (PWCS) and finally converted to sodic form (PWCS-Na) by treating with saturated sodium bicarbonate. The PWCS and PWCS-Na as obtained were characterized using FTIR, pH_ZPC, SEM, PXRD, and Brunauer–Emmett–Teller (BET) analysis. The BET surface area of the PWCS-Na was found to be 579.5 m²/g. Maximum sorption capacity values in the batch study for Cd(II) (235.2 ± 10.3 mg g⁻¹) and Ni(II) (195.6 ± 15.2 mg g⁻¹) were observed at 298 K, pH 6, sorbent dosage of 30 mg, and metal ion concentration of 70 mg/L. The filter membrane system was designed and employed for the purification of the flowing water system. Theoretical calculations show that 1 L of filter membrane containing 138.0 g of the adsorbent PWCS-Na can purify 532.8 L solution with Cd(II) concentration 70 mg/L and 278.2 L solution of Ni(II) with concentration 70 mg/L. The regeneration study proved the efficient reusability of sorbent after five cycles with a slight change in sorption capacity.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"68 ","pages":"Article 106337"},"PeriodicalIF":6.3,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Application of pyrite to water pollutant removal: A review","authors":"Zhihong Tu ,&nbsp;Yujian Liang ,&nbsp;Shu Zhou ,&nbsp;Xuezhen Zhang ,&nbsp;Xiaomei Tan ,&nbsp;Guo Yu ,&nbsp;Xuehong Zhang ,&nbsp;John R. Reinfelder","doi":"10.1016/j.jwpe.2024.106375","DOIUrl":"10.1016/j.jwpe.2024.106375","url":null,"abstract":"<div><div>Pyrite (FeS₂), a prevalent metal sulfide mineral on Earth, has garnered substantial attention for its resource utilization amidst environmental concerns stemming from its conventional disposal as low-value tailings and the associated acid mine drainage (AMD) issues. Leveraging its exceptional adsorption capacity, formidable reducing strength, and heightened surface catalytic activity, pyrite has emerged as a versatile material in water pollution control and remediation. This paper presents a comprehensive review of pyrite's utilization in water pollutant treatment, elucidating the unique characteristics that underpin its effectiveness. Specifically, the release of Fe²⁺ ions and sulfide species, functioning as electron-rich donors, imparts pyrite with robust reducing capabilities, rendering it an ideal candidate as a reducing agent. Furthermore, the positively charged surface of pyrite, coupled with the formation of complexes during redox reactions, synergistically enhances its capacity to adsorb and sequester pollutants, thereby acting as a potent adsorbent. Notably, pyrite's self-regulating pH mechanism and its sustained, controlled release of Fe²⁺ ions confer distinct advantages in advanced oxidation processes, broadening its application horizon. This review meticulously summarizes the research advancements in harnessing pyrite's adsorption, reduction, and catalytic properties for the removal of heavy metals, inorganic contaminants, and organic pollutants from aqueous environments. It critically examines the underlying mechanisms that govern pyrite's pollutant removal capabilities and appraises the environmental factors that modulate its removal efficiency. By offering a holistic perspective, this comprehensive overview not only deepens our understanding of pyrite's role in water remediation but also serves as a valuable resource for researchers seeking to explore and optimize the application of this multifaceted mineral in addressing water pollution challenges.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"68 ","pages":"Article 106375"},"PeriodicalIF":6.3,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Construction of engineered heterojunction based on CdS and MgO material co-integrated into a flat plane-like graphene for tetracycline decontamination: Ecological hazard assessment and toxicity alleviation","authors":"Kasra Nateq ,&nbsp;Mohamadamin Amarzadeh ,&nbsp;Mohammad Shohani Zadeh ,&nbsp;Mohammad Rostami ,&nbsp;Iman Danaee ,&nbsp;Sebastian P. Schwaminger ,&nbsp;Mohammad Reza Khosravi-Nikou ,&nbsp;Aboulfazl Mirzapoor ,&nbsp;Ghazal Goli","doi":"10.1016/j.jwpe.2024.106361","DOIUrl":"10.1016/j.jwpe.2024.106361","url":null,"abstract":"<div><div>This study encompasses the photocatalytic decomposition activity of an appreciable ternary CdS/MgO/graphene heterostructured composite (denoted as CMG) for the decontamination of recalcitrant tetracycline (TTC) from aqueous environment under LED light illumination. The physicochemical characteristics of the as-prepared catalysts were elucidated utilizing a series of advanced analytical methods including XRD, FTIR, DRS, BET, EIS, TEM, and FESEM. The CMG architectures reveal vigorous photocatalytic performance towards the decontamination of TTC upon exposure to the LED light, the decontamination rate is approximately 5.5, 4 and 3 times higher than neat graphene, MgO and CdS, respectively. Under the optimized conditions (i.e., pH: 7, CMG dosage: 0.5 g. L⁻¹, light intensity: 75 W and TTC content: 30 mg. L⁻¹), the remarkable degradation rate of TTC (98 % in 120 min) was achieved by the CMG/LED system. An inhibitory impact of anions during the photocatalyst process was recorded as follows: Cl⁻ &gt; NO³⁻ &gt; SO₄²⁻ &gt; PO₄³⁻. To provide a comprehensive understanding of the photocatalyst's behavior and shed light on its mechanism, various analytical techniques were utilized including band structure evaluation, EIS, and capture experiments. The active agents trapping experiments evidenced that OH<img> radicals are the predominant decomposing agents participated in the TTC decontamination. Furthermore, the CMG composite exhibited a noticeable performance during six cycling treatment experiments, inducing its remarkable capability for practical applications. The photocatalytic mechanism of the TTC degradation route over the CMG/LED system was unraveled on the basis of the LC-MS analysis. The ECOSAR software calculations forecasted that CMG/LED system could be regarded as an ecologically benign technology to eliminate antibiotic-related hazards to the living individuals and the environment. In extension, the ecological risk assessment of TTC and its intermediates was scrutinized over CMG/LED system for the first time ever, revealing the excellent performance of the target system in diminishing the actual potential ecological risk.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"68 ","pages":"Article 106361"},"PeriodicalIF":6.3,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Understanding the potential of coal gangue as photocatalyst for antibiotic degradation: The role of abundant oxygen vacancies and electron-hole pairs","authors":"Jihong Dong ,&nbsp;Jiabang Li ,&nbsp;Shuyue Zheng ,&nbsp;Quan Chen ,&nbsp;Min Wu ,&nbsp;Peng Yi ,&nbsp;Yu Huang ,&nbsp;Bo Pan","doi":"10.1016/j.jwpe.2024.106382","DOIUrl":"10.1016/j.jwpe.2024.106382","url":null,"abstract":"<div><div>Coal gangue (CG) offers promising potential as a cost-effective photocatalyst for antibiotic degradation. However, current approaches do not emphasize the origin of its photocatalytic activity. This study investigates the photocatalytic activity of CG through a comparative analysis with one-pot aerobic/anaerobic calcinated CG. The potential application of CG as a photocatalyst for tetracycline (TC) decontamination in water was evaluated under dark and light. Characterization results identified anatase and kaolinite as the critical photosensitive minerals in CG. Batch removal experiments indicated that CG achieved up to 98 % TC removal at 1 g/L dosage, with most biotoxic intermediates reduced to below 0.9 mg L⁻¹ Lethal Concentration 50 (LC50) of Fathead minnow (<em>Pimephales promelas</em>). Degradation pathways identified by density functional theory (DFT) and quantitative structure-activity relationship (QSAR) indicated that superoxide anion (^⁎O₂⁻) and electron-hole (<em>e</em>^<em>−</em><em>-h</em>^<em>+</em>) pairs were predominant contributors to TC photodegradation. Theoretical calculations suggest that the oxygen vacancies on the CG surface can accelerate the production of ^⁎O₂⁻, while fast electron transport channels within surface hydroxyl groups facilitate <em>e</em>^<em>−</em> and <em>h</em>^<em>+</em> separation. The findings of this research elucidate the origin of CG's photocatalytic activity and highlight the potential to serve as a photocatalyst for low-cost antibiotic removal, offering a promising solution for coal waste management and utilization.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"68 ","pages":"Article 106382"},"PeriodicalIF":6.3,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Novel Venturi injector reactor design and application in ammonia nitrogen wastewater treatment","authors":"Weiwen Wang ,&nbsp;Litong Zhou ,&nbsp;Chaojie Li ,&nbsp;Guiyong Li ,&nbsp;Yekui Chen ,&nbsp;Qingpeng Pan ,&nbsp;Zhixin Yu ,&nbsp;Yangshuo Dong ,&nbsp;Jihai Duan","doi":"10.1016/j.jwpe.2024.106352","DOIUrl":"10.1016/j.jwpe.2024.106352","url":null,"abstract":"<div><div>The Venturi injector reactor has a robust and durable design and is highly efficient and reliable. The flow field control in the Venturi reactor is an effective way to enhance gas−liquid mass transfer. In this study, a novel Venturi injector reactor with an expandable self-priming air inlet and a second water inlet in the diffusion section was designed by combining particle image velocimetry (PIV) experiments with a computational fluid dynamics simulation. This novel design increased the gas holdup, generated smaller and more uniform bubbles, and enhanced mass transfer. Furthermore, we applied the novel Venturi device to the biological degradation of ammonia nitrogen wastewater. The total gas holdup in the novel Venturi was higher than in the conventional Venturi injector reactor by 0.0056 on average. The minimum bubble diameter was approximately 0.71 mm. Moreover, the ammonia nitrogen removal efficiency of the novel Venturi equipment with the second inlet was 2 and 1.1 times higher than that of conventional aeration and conventional Venturi device, respectively. This study provides a theoretical basis and practical significance for improving the performance and efficient degradation of the ammonia nitrogen concentration in Venturi injector reactors.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"68 ","pages":"Article 106352"},"PeriodicalIF":6.3,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The effect of leaf leachates addition on denitrification in subsurface flow constructed wetlands is shaped by the bed substrate type","authors":"Mercedes Guerrero-Brotons ,&nbsp;Rosa Gómez ,&nbsp;José Álvarez-Rogel ,&nbsp;Miguel Ángel Sánchez-Monedero ,&nbsp;María Isabel Arce","doi":"10.1016/j.jwpe.2024.106360","DOIUrl":"10.1016/j.jwpe.2024.106360","url":null,"abstract":"<div><div>In constructed wetlands (CWs), bed substrate and leaf leachates from vegetation may correct the low C/N ratio that constrains heterotrophic denitrification and nitrate removal from irrigated agricultural drainage water. However, the interactive effects of bed substrate type and leaf leachates on denitrification are still unknown. By focusing on a CWs pilot plant, we designed a laboratory experiment to evaluate i) wether denitrification potential rates varied among bed substrates: calcareous gravel (a conventional substrate), gravel+soil from a natural wetland (silty loam Solonchak, 1.5 % of organic C) and gravel+biochar from pyrolyzed ornamental plants (75 % of organic C); and ii) the response of denitrification within each bed substrate to the addition of their respective leaf leachates. We found that denitrification potential rates were lower in gravel beds (0.011 ± 0.006 μgN₂O-N gDM⁻¹ h⁻¹) than those observed with the addition of biochar (0.06 ± 0.03) and especially soil (0.78 ± 0.04), with soil being the most advantageous option. Besides, leaf leachates addition boosted denitrification rates in all cases. Nevertheless, the effect of leachates was relatively higher in gravel beds than in the other substrates (15 times higher vs. 2 and 4 times with soil and biochar, respectively). Our outcomes highlight limited denitrification when using gravel substrate not only by low C but also due to essential macro- and micro-elements, and support the role of plant leaves as internal and self-sustainable source of nutrients.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"68 ","pages":"Article 106360"},"PeriodicalIF":6.3,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Simultaneous degradation of pharmaceuticals and personal care products in hospital wastewater using ozone under ultraviolet irradiation","authors":"Junyoung Kim ,&nbsp;Imtiaz Afzal Khan ,&nbsp;Jae Won Lee ,&nbsp;Youngnoh Kim ,&nbsp;Seokhwan Jeon ,&nbsp;Soryong Chae ,&nbsp;Jong-Oh Kim","doi":"10.1016/j.jwpe.2024.106366","DOIUrl":"10.1016/j.jwpe.2024.106366","url":null,"abstract":"<div><div>The discharge of Pharmaceuticals and personal care products (PPCPs) from industries and hospitals are responsible for the contamination of water body with slow or non-degradable toxic compounds. The removal of these contaminants required advanced treatment process because of unable to treat by conventional wastewater treatment process. In this study, the degradation of PPCP compounds, including caffeine (CAF), atenolol (ATL), carbamazepine (CBZ), sulfamethoxazole (SMX), trimethoprim (TMP), and acetaminophen (ACT) was evaluated under exposure to 1.0 and 1.5 mg/L dissolved ozone (O₃), both with and without ultraviolet (UV) irradiation (254 nm). Using liquid chromatography with tandem mass spectrometry, we determined that the removal efficiency for the targeted contaminants exceeded 95 % within just 20 min of exposure to both 1.0 and 1.5 mg/L O₃. However, when treated with UV light alone, the removal efficiency was limited at 3 %–11 %. A combination treatment involving dissolved 1.5 mg/L O₃ and UV light led to over 97 % removal within 7 min. This outcome was attributed to hydroxylation reactions, aromatic ring opening, oxidation, and mineralization facilitated by the HO<img> and peroxide generated through the photolysis of O₃. The degradation rate of PPCP compounds followed pseudo-first-order kinetics and showed a decrease in the presence of humic acid and hospital wastewater further decreased it. Moreover, O₃/UV treatment generated lower-weight degradation products. The toxicity analysis revealed that these transformation products exhibited environmental benignity and minimal health risks which O₃/UV treatment potentially minimizes the presence of harmful byproducts. These findings provide a foundation for developing combined hybrid systems for PPCP containing wastewater, containing membrane filtration with ozonation system.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"68 ","pages":"Article 106366"},"PeriodicalIF":6.3,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}