Journal of water process engineering最新文献_第5页

Construction of ordered pores and defects in catalyst's carbon skeleton by a “doping-volatilization” template strategy 通过 "掺杂-挥发 "模板策略在催化剂碳骨架中构建有序孔隙和缺陷

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2024-10-23 DOI: 10.1016/j.jwpe.2024.106326

Haozhan Zheng , Yintao Shi , Meng Li , Hao Zhang , Shasha Li , Huiyuan Deng , Dongsheng Xia

{"title":"Construction of ordered pores and defects in catalyst's carbon skeleton by a “doping-volatilization” template strategy","authors":"Haozhan Zheng , Yintao Shi , Meng Li , Hao Zhang , Shasha Li , Huiyuan Deng , Dongsheng Xia","doi":"10.1016/j.jwpe.2024.106326","DOIUrl":"10.1016/j.jwpe.2024.106326","url":null,"abstract":"<div><div>ZnCl<sub>2</sub> is used as a pore-forming agent to increase the specific surface area of carbon materials. However, traditional acid washing methods inevitably damage the surface structure of biochar. Herein, a “doping-volatilization” method of ZnCl<sub>2</sub> was designed. The ZnCl<sub>2</sub> modified <em>Lycium barbarum</em> biochar were investigated on their structure-function relationship. Significant differences were observed in the performance of various ratios of ZnCl<sub>2</sub>-modified biochar in the degradation of bisphenol AF by activated peroxymonosulfate (PMS). The defective structure served as the main active site, and the oxidation of bisphenol AF was dominated by the oxidation of singlet oxygen (<sup>1</sup>O<sub>2</sub>). Meanwhile, it was found that the etching and pore-forming performance of ZnCl<sub>2</sub> on biochar change with the increase in proportion. Therefore, reasonable control of the addition ratio of ZnCl<sub>2</sub> can effectively control its effect and provide a reference for the application of biochar in wastewater treatment.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"68 ","pages":"Article 106326"},"PeriodicalIF":6.3,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527848","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}

引用次数: 0

Application of Photo-Fenton oxidative process followed by adsorption in dairy effluents treatment 光-芬顿氧化工艺和吸附法在奶制品废水处理中的应用

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2024-10-23 DOI: 10.1016/j.jwpe.2024.106365

Layanne Rodrigues da Silva , Thais Jaciane Rodrigues Araujo , Maria Tereza Sarmento da Fonseca , Newton Carlos Santos , Germano Elias Gomes , Josivanda Palmeira Gomes , Gilmar Trindade de Araujo , Ana Paula Trindade Rocha

{"title":"Application of Photo-Fenton oxidative process followed by adsorption in dairy effluents treatment","authors":"Layanne Rodrigues da Silva , Thais Jaciane Rodrigues Araujo , Maria Tereza Sarmento da Fonseca , Newton Carlos Santos , Germano Elias Gomes , Josivanda Palmeira Gomes , Gilmar Trindade de Araujo , Ana Paula Trindade Rocha","doi":"10.1016/j.jwpe.2024.106365","DOIUrl":"10.1016/j.jwpe.2024.106365","url":null,"abstract":"<div><div>Wastewater from milk processing and its derivatives is highly polluting due to its complex composition. Conventional treatments do not allow the treated effluent to be reused, so more effective processes such as advanced oxidation processes (AOPs) are required. This study evaluated the efficiency of the Photo-Fenton AOP followed by adsorption in activated carbon (AC) suspension to reduce the organic load of the effluent. The effluent was characterized for conductivity, pH, chemical oxygen demand (COD), total and soluble solids, and oils and fats. The initial COD of the effluent was 630 mg.O₂/L, and the total solids content was 3703 mg/L. The AC was characterized for mesoporosity, microporosity, zero-charge pH, and Boehm's acidic and basic groups. A central composite rotational design (CCRD) was used to determine different concentrations of H₂O₂ and FeSO₄ to prepare Fenton solutions and the reaction time for the AOP treatment, with COD reduction as the response variable. The Photo-Fenton treatment achieved a maximum COD reduction of 79 % under optimized conditions (0.829 mL/L of H₂O₂, 0.625 g/L of FeSO₄ for 60 min). After photooxidative treatment, the samples were suspended in AC and filtered. Kinetic and equilibrium studies showed that the AC could remove 1666.6 mg.O₂/g per gram of AC, confirming its effectiveness as an adsorbent after the Photo-Fenton process. With the coupled Photo-Fenton/adsorption treatment, the efficiency for organic removal reached 99 %, indicating strong and efficient reduction of organic compounds. These results suggest that the treated effluent could be suitable for reuse in various industrial applications, promoting sustainable water management practices.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"68 ","pages":"Article 106365"},"PeriodicalIF":6.3,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527847","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}

引用次数: 0

Effective purification of Fe/V as spherical phosphosiderite and porous vanadium oxyhydroxide from waste vanadium-bearing slag 从含钒废渣中以球状磷帘石和多孔氧氢氧化钒的形式有效提纯铁/钒

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2024-10-23 DOI: 10.1016/j.jwpe.2024.106369

Zhu Suiyi , Su Ting , Lan Xin , Htet Oo Kaung , Zheng Minglin , Wang Tianzhu , Luo Wenjing , Zhou Rui , Yang Weilu , Chen Yu

{"title":"Effective purification of Fe/V as spherical phosphosiderite and porous vanadium oxyhydroxide from waste vanadium-bearing slag","authors":"Zhu Suiyi , Su Ting , Lan Xin , Htet Oo Kaung , Zheng Minglin , Wang Tianzhu , Luo Wenjing , Zhou Rui , Yang Weilu , Chen Yu","doi":"10.1016/j.jwpe.2024.106369","DOIUrl":"10.1016/j.jwpe.2024.106369","url":null,"abstract":"<div><div>Recovery of valuable vanadium (V) from V-rich waste was of economic and environmental and commonly treated by calcination and/or extraction. Herein, a novel route was developed to stepwise separate Fe and V from grayish slag via a coupled dissolution and hydrothermal route. After dissolving the V-rich slag in acid, the generated leachate was hydrothermally treated with the addition of phosphate and ethanol. 99.1 % Fe was effectively removed, whilst the loss of V and Mg were only 5.2 % and <2 %. The optimal parameters were 160 °C, 20 g/L phosphate and 0.1-ml ethanol. Fe reacted with phosphate and crystallized as phosphosiderite particles at 160 °C. With the Fe removal, free H<sup>+</sup> was released and then consumed in the redox reaction of nitrate and ethanol. The thermodynamic analysis showed that phosphate accelerated the Fe hydrolysis/crystallization, resulting in the removal of Fe prior to V at the pH < 0.5 and the co-removal of Fe/V at the pH > 1. 98.7 % V was recycled as vanadium oxide hydrate particles by adjusting the leachate to pH 0.2 at 90 °C by adding urea. This provided as a promising strategy to separate Fe and V from leachate and posed potential application in the resource utilization of V-rich waste.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"68 ","pages":"Article 106369"},"PeriodicalIF":6.3,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527850","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}

引用次数: 0

Nutrient concentration of blackwater digestate using an air gap membrane distillation process 利用气隙膜蒸馏工艺浓缩黑水沼渣中的营养物质

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2024-10-23 DOI: 10.1016/j.jwpe.2024.106357

Stephanie Rusch Fehrmann , Annelie Hedström , Elisabeth Kvarnström , Juan Antelo , Iemke Bisschops , Inga Herrmann

{"title":"Nutrient concentration of blackwater digestate using an air gap membrane distillation process","authors":"Stephanie Rusch Fehrmann , Annelie Hedström , Elisabeth Kvarnström , Juan Antelo , Iemke Bisschops , Inga Herrmann","doi":"10.1016/j.jwpe.2024.106357","DOIUrl":"10.1016/j.jwpe.2024.106357","url":null,"abstract":"<div><div>Blackwater from vacuum toilets contains significant amounts of nutrients that can be repurposed as fertilizer. This study aimed to evaluate an air gap membrane distillation process to concentrate nutrients in blackwater digestate. In the first experiments, various temperatures (40 °C, 55 °C and 70 °C) and pH levels (2.5, 2.8, 3.0, 4.0 and 6.0) were tested on the feed, resulting in operating conditions of 55 °C and pH 4 for the study's second experiment. Under these conditions, a 15-fold volume reduction was achieved. In this second experiment, the average permeate flux was 1.95 Lm<sup>−2</sup> h<sup>−1</sup> during the first 18 h, decreasing to 0.81 Lm<sup>−2</sup> h<sup>−1</sup> after 150 h of operation. The membrane was cleaned when the flux dropped to 0.39 Lm<sup>−2</sup> h<sup>−1</sup>. The final concentrate had an NPK elemental weight ratio of 1:3:0.3. A chemical model indicated that most ammonium and phosphorus were dissolved in the concentrate, with some phosphate compounds precipitating. The product contained essential micronutrients and low levels of harmful substances like As, Hg, Cd, and Pb, with NaCl at 0.3 % of the weight. The main challenge was membrane wetting, leading to 33 % of nitrogen loss and 13 % of phosphorus loss. Despite the challenges the process successfully produced a nutrient-rich concentrate beneficial for agriculture.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"68 ","pages":"Article 106357"},"PeriodicalIF":6.3,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527849","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}

引用次数: 0

Peroxymonosulfate activation over (Cu+ decorated g-C3N4)/Bi2WO6 composites with S-scheme heterojunction for RhB degradation 在具有 S 型异质结的 (Cu+ decorated g-C3N4)/Bi2WO6 复合材料上活化过一硫酸盐以降解 RhB

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2024-10-23 DOI: 10.1016/j.jwpe.2024.106384

Chuangbin Hong , Jiehang Zhou , Wenguang Wang , Liangpeng Wu , Shimin Long , Wentao Zhou , Yuxi Guo

{"title":"Peroxymonosulfate activation over (Cu+ decorated g-C3N4)/Bi2WO6 composites with S-scheme heterojunction for RhB degradation","authors":"Chuangbin Hong , Jiehang Zhou , Wenguang Wang , Liangpeng Wu , Shimin Long , Wentao Zhou , Yuxi Guo","doi":"10.1016/j.jwpe.2024.106384","DOIUrl":"10.1016/j.jwpe.2024.106384","url":null,"abstract":"<div><div>Catalytic activation of peroxymonosulfate (PMS) is one of the important research areas in the development of advanced oxidation technology for wastewater treatment. At present, the development of high-performance catalysts for PMS activation has become a research hotspot. Herein, (Cu<sup>+</sup> decorated g-C<sub>3</sub>N<sub>4</sub>)/Bi<sub>2</sub>WO<sub>6</sub> ((Cu<sup>+</sup>/g-C<sub>3</sub>N<sub>4</sub>)/Bi<sub>2</sub>WO<sub>6</sub>) composite was prepared successively by calcination and solvothermal method, which was used in visible light-assisted PMS activation for the degradation of rhodamine B (RhB). The construction of S-scheme heterojunctions between Cu<sup>+</sup> decorated g-C<sub>3</sub>N<sub>4</sub> and Bi<sub>2</sub>WO<sub>6</sub> facilitated the activation of PMS, leading to a RhB degradation ratio of 98.46 % within 50 min. The corresponding reaction kinetic was significantly improved by a factor of 2.32 and 7.94 compared with that of CCN and BWO, respectively. The enhanced performance of the (Cu<sup>+</sup>/g-C<sub>3</sub>N<sub>4</sub>)/Bi<sub>2</sub>WO<sub>6</sub> can be attributed to the successful construction of S-scheme heterojunction, which facilitates the separation of photogenerated carriers and accelerates the PMS activation to produce abundant active species. Furthermore, the (Cu<sup>+</sup>/g-C<sub>3</sub>N<sub>4</sub>)/Bi<sub>2</sub>WO<sub>6</sub> composites exhibit strong stability and reusability following three cycles. In addition, the intermediates produced during the RhB degradation process were investigated by liquid chromatograph mass spectrometer (LC-MS). This study provides a new insight into the preparation of S-scheme photocatalysts for the photocatalytic-PMS activation system that will achieve efficient removal of dyes from wastewater.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"68 ","pages":"Article 106384"},"PeriodicalIF":6.3,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527846","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}

引用次数: 0

Advanced hybridization of coagulation–ultrafiltration systems: A critical techno-economic review of integration strategies 混凝-超滤系统的高级混合：对一体化战略的重要技术经济审查

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2024-10-22 DOI: 10.1016/j.jwpe.2024.106297

Shashank Srivastava , Chandan Das

{"title":"Advanced hybridization of coagulation–ultrafiltration systems: A critical techno-economic review of integration strategies","authors":"Shashank Srivastava , Chandan Das","doi":"10.1016/j.jwpe.2024.106297","DOIUrl":"10.1016/j.jwpe.2024.106297","url":null,"abstract":"<div><div>Coagulation pretreatment has become indispensable for low-pressure membrane processes, together forming a cost-effective and efficient water treatment solution, particularly beneficial for developing economies. A critical techno-economic evaluation of advanced hybridization of the traditional coagulation ultrafiltration (CUF) process to overcome its limitations and address emerging challenges in the field is presented in this review. Confusion persists regarding nomenclature, process selection, and categorization of such hybrid treatment processes. This study seeks to critically review and organize recent works shaping the outlook of fifteen key hybrid CUF processes to establish a systematic framework within the seemingly disordered array of recent literature. Key factors influencing the combined C + UF process are analyzed, opportunities are identified, and effective strategies for integration are proposed. Future research may prioritize the investigation of underexplored parameters such as sustainability metrics, toxic by-product formation potential (TBP-FP), pulse dosing strategies, intralayer floc charge distribution, temperature-superparamagnetism, interfacial free energy, specific gas nanobubbles, tailored hybrid flocculants, and scalability. This review highlights the cascading influence of several such factors on hybrid CUF system performance and aims to delineate pathways for advancing system efficiency, sustainability, and adaptability.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"68 ","pages":"Article 106297"},"PeriodicalIF":6.3,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527520","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}

引用次数: 0

Highly efficient and salt resistant solar interface evaporator based on pressed wood flour with multi-level pores 基于多层次孔隙压制木粉的高效耐盐太阳能界面蒸发器

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2024-10-22 DOI: 10.1016/j.jwpe.2024.106368

Xiahui Liu , Mengyang Cong , Yuliang Zhang , Ting Shu , Tao Liu , Cadao Nguyen , Xiaobo Chen

{"title":"Highly efficient and salt resistant solar interface evaporator based on pressed wood flour with multi-level pores","authors":"Xiahui Liu , Mengyang Cong , Yuliang Zhang , Ting Shu , Tao Liu , Cadao Nguyen , Xiaobo Chen","doi":"10.1016/j.jwpe.2024.106368","DOIUrl":"10.1016/j.jwpe.2024.106368","url":null,"abstract":"<div><div>Interfacial solar steam generation has garnered significant attention as an eco-friendly and sustainable technology for desalination and wastewater purification. Nevertheless, in challenging conditions such as strong brine and high-intensity settings, both the evaporation efficiency and the service life of the solar evaporator are inevitably diminished due to salt accumulation on the surface of interfacial solar evaporators. Here, a platelike evaporator that features high water evaporation rate in brine without salt accumulation is developed by rational design of polydopamine-coated wood powder with a hierarchical pore structure. This evaporator not only exhibits high water evaporation rate of 2.299 kg m<sup>−2</sup> h<sup>−1</sup> along with 155.4 % solar-to-steam conversion efficiency under 1 sun illumination, but also deliver exceptional salt accumulation resistance even in 20 wt% brine. With the advantages of a high light absorption rate, easy preparation process, and low cost, this evaporator shows promising potential in the field of solar steam generation and seawater desalination.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"68 ","pages":"Article 106368"},"PeriodicalIF":6.3,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527936","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}

引用次数: 0

Adsorption and recovery of berberine hydrochloride from wastewater by a novel magnesium-modified biochar: Toward resource utilization of waste dander 新型镁改性生物炭对废水中盐酸小檗碱的吸附和回收：实现废弃皮屑的资源化利用

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2024-10-22 DOI: 10.1016/j.jwpe.2024.106341

Yunyu Zhao , Shuyi Yang , Kexin Zhou , Junbo Wang , Cheng Ji , Yuanfei Wang , Liang Chen , Yun Li , Chong Peng , Tao E

{"title":"Adsorption and recovery of berberine hydrochloride from wastewater by a novel magnesium-modified biochar: Toward resource utilization of waste dander","authors":"Yunyu Zhao , Shuyi Yang , Kexin Zhou , Junbo Wang , Cheng Ji , Yuanfei Wang , Liang Chen , Yun Li , Chong Peng , Tao E","doi":"10.1016/j.jwpe.2024.106341","DOIUrl":"10.1016/j.jwpe.2024.106341","url":null,"abstract":"<div><div>At present, China produces 1.4 million tons of waste dander annually, and if they are directly incinerated, about 2.3 million tons of CO<sub>2</sub> will be generated, leading to the aggravation of the greenhouse effect. In order to realize the resource utilization of waste dander, Mg<sup>2+</sup>-modified biochar (MBC) was prepared via Mg<sup>2+</sup> impregnation and pyrolysis. And the generated MgO nanoparticles were in-situ immobilized on its surface, which effectively increased the specific surface area of the biochar and provided more active sites for the adsorption of the macromolecular organic pollutant berberine hydrochloride (BBH). In addition, the introduction of Mg<sup>2+</sup> not only effectively reduced the release of small molecules such as SO<sub>2</sub> and CO<sub>2</sub>, but also generated C-O-Mg bond and more conjugated structures. As a result, MBC is endowed with greater adsorption capacity and stability. Meanwhile, mechanistic analyses indicated that the superior adsorption capacity of MBC for BBH may be related to electrostatic and π-π interactions. Finally, density functional theory (DFT) was employed to confirm the formation of C-O-Mg bonds and verify that BBH was adsorbed on different adsorption sites of MBC. Therefore, the resource utilization of waste dander can be achieved with MBC.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"68 ","pages":"Article 106341"},"PeriodicalIF":6.3,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527938","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}

引用次数: 0

Facile fabrication of green and sustainable gelatin-based aerogels for marine oil spill recovery 简便制备用于海洋溢油回收的绿色可持续明胶基气凝胶

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2024-10-22 DOI: 10.1016/j.jwpe.2024.106383

Juan Sun , Jing Qu , Shuixiang Xie , Tong Zhao , Fang Liu , Chunshuang Liu

{"title":"Facile fabrication of green and sustainable gelatin-based aerogels for marine oil spill recovery","authors":"Juan Sun , Jing Qu , Shuixiang Xie , Tong Zhao , Fang Liu , Chunshuang Liu","doi":"10.1016/j.jwpe.2024.106383","DOIUrl":"10.1016/j.jwpe.2024.106383","url":null,"abstract":"<div><div>Efficient and rapid cleanup of marine oil spills is crucial for environmental protection and resource recovery. Biomass aerogel has a broad application prospect in oil spill treatment, but is often limited by the complex preparation process and the use of toxic cross-linking agents. In this study, the hydrophobic gelatin-based aerogels (HGAs) were simply prepared for marine oil spill recovery based on self-crosslinking of gelatin, bubbles produced by surfactants and high-speed stirring, and chemical vapor deposition using methyl trichlorosilane (MTCS). The results showed that the HGAs exhibited a three-dimensional porous structure with a water contact angle of 131.6°. Their adsorption capacities for various oils and organic solvents ranged from 60.4 to 146.5 g/g, which was linearly related to the oil density and depended on the number of pores within the material. The oil adsorption by the HGAs reached equilibrium within 30 s, following the pseudo-second-order kinetic model and the HGAs were highly stable in different temperature, pH, and salinity conditions. Simple squeezing can recover 80 % of the spilled oil, and retain 86 % of the initial adsorption capacity after 10 adsorption-squeeze cycles. Additionally, the HGAs had an excellent continuous oil-water separation performance, demonstrating significant potential and practicability in marine oil spill recovery.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"68 ","pages":"Article 106383"},"PeriodicalIF":6.3,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527939","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}

引用次数: 0

Degradation of ciprofloxacin by hydrogen peroxide activated with pyrite under simulated sunlight 过氧化氢在模拟阳光下活化黄铁矿降解环丙沙星

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2024-10-22 DOI: 10.1016/j.jwpe.2024.106389

Zhenguo Li, Yaru Zhang, Wenlong Bi, Fenwu Liu

{"title":"Degradation of ciprofloxacin by hydrogen peroxide activated with pyrite under simulated sunlight","authors":"Zhenguo Li, Yaru Zhang, Wenlong Bi, Fenwu Liu","doi":"10.1016/j.jwpe.2024.106389","DOIUrl":"10.1016/j.jwpe.2024.106389","url":null,"abstract":"<div><div>Ciprofloxacin (CIP) residues in the environment pose risks to both human health and ecosystems. In this study, we explored the effect of hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) on CIP degradation, activated by pyrite (FeS<sub>2</sub>) under simulated sunlight. XRD, XRF, EDS, XSP, DRS, and PL tests confirmed the high purity of FeS<sub>2</sub> and its photocatalytic properties. With [CIP] = 30 μM, [FeS<sub>2</sub>] = 0.2 g/L, [H<sub>2</sub>O<sub>2</sub>] = 0.2 mM, CIP removal reached 87.6 %. The removal rate of TOC reached 55.3 % after 60 min of light exposure, and hydroxyl radicals (<img>OH) contributed 72.7 % to the process. H<sub>2</sub>O<sub>2</sub> utilization was 67.5 %, and the system operated effectively across a pH range of 2.00 to 8.00. CIP removal in river water reached 87.9 % after 3 h of light exposure, though the degradation was slower than in ultrapure water. Cl<sup>−</sup>, SO<sub>4</sub><sup>2−</sup>, and NO<sub>3</sub><sup>−</sup> had little effect on degradation, whereas H<sub>2</sub>PO<sub>4</sub><sup>−</sup>, CO<sub>3</sub><sup>2−</sup>, and HCO<sub>3</sub><sup>−</sup> significantly inhibited the process as their concentrations increased. In livestock wastewater, the simulated sunlight-FeS<sub>2</sub>/H<sub>2</sub>O<sub>2</sub> system was less effective, but after diluting the wastewater 100 times, CIP removal reached 87.6 % after 60 min. The degraded solutions showed no significant toxicity. These findings suggest that FeS<sub>2</sub>, combined with simulated sunlight, can effectively catalyze low concentrations of H<sub>2</sub>O<sub>2</sub> to produce <img>OH radicals, removing antibiotics from livestock wastewater.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"68 ","pages":"Article 106389"},"PeriodicalIF":6.3,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527940","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}

引用次数: 0