Desalination and Water Treatment最新文献_第4页

Mechanism of ozone catalysis by transition metal hydroxyl oxides: From reactive oxygen species to surface structural hydroxyl 过渡金属羟基氧化物催化臭氧的机理：从活性氧到表面结构羟基

4区工程技术

Desalination and Water Treatment Pub Date : 2024-10-01 DOI: 10.1016/j.dwt.2024.100823

Yuan Ziwei, Zhe Wang, Wang Shaopo, Jingjie Yu, Chen Li, Chang Jing

{"title":"Mechanism of ozone catalysis by transition metal hydroxyl oxides: From reactive oxygen species to surface structural hydroxyl","authors":"Yuan Ziwei, Zhe Wang, Wang Shaopo, Jingjie Yu, Chen Li, Chang Jing","doi":"10.1016/j.dwt.2024.100823","DOIUrl":"https://doi.org/10.1016/j.dwt.2024.100823","url":null,"abstract":"Transition metal hydroxyl oxides have been used widely as ozone catalysts for water purification. However, the fabrication methods selected and the pollutants treated vary, making it difficult to compare their performance. In this study, ZnOOH, FeOOH, CoOOH, and MnOOH were synthesized by the same method to remove multiple structurally similar targets. Results showed that the ZnOOH performed the best, removing over 90% of all targets within 40 min, and presenting the highest ozone utilization rate of 0.081 min -1 . Multiple ROS quantification and contribution experiments jointly demonstrated that ZnOOH had an advantage over the other catalysts only in ·OH generation, but the ·OH contributed 93% of target removal in the ZnOOH/O 3 process. Structure analysis of ZnOOH suggested that its ·OH generation had little connection with the contents of surface metal and adsorbed water, but was dependent on the surface structural hydroxyl that would undergo loss at 100-300℃. This concentration of ZnOOH was 10.1 mM/g, which was 1.7, 5.3, and 6.3 times higher than that of FeOOH, CoOOH, and MnOOH, respectively. Heat treatment further revealed that these surface hydroxyl mainly originated from the hydroxyl ions from water dissociation and could regenerate timely during reuse. Finally, a possible catalysis pathway was proposed. • The dominant catalytic ozonation mechanism of a series of TMHOs was explored. • All the target removal followed the same sequence of ZnOOH > FeOOH > CoOOH > MnOOH. • ·OH was the main contributor to the target removal in all catalytic systems. • The yield of ·OH was dependent on the surface hydroxyl content of each catalyst. • The surface hydroxyl of TMHOs could regenerate timely from water dissociation.","PeriodicalId":11260,"journal":{"name":"Desalination and Water Treatment","volume":"320 1","pages":"100823-100823"},"PeriodicalIF":0.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147892369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 4

Phosphate adsorption from phosphorus-polluted wastewater by peanut hull-derived biochar functionalized with eggshell-based calcium chloride: preparation, adsorption performance and mechanism 蛋壳基氯化钙功能化花生壳生物炭对磷污染废水中磷酸盐的吸附：制备、吸附性能及机理

4区工程技术

Desalination and Water Treatment Pub Date : 2024-10-01 DOI: 10.1016/j.dwt.2024.100880

Xiaoqi Liu, Yanjun Yue

{"title":"Phosphate adsorption from phosphorus-polluted wastewater by peanut hull-derived biochar functionalized with eggshell-based calcium chloride: preparation, adsorption performance and mechanism","authors":"Xiaoqi Liu, Yanjun Yue","doi":"10.1016/j.dwt.2024.100880","DOIUrl":"https://doi.org/10.1016/j.dwt.2024.100880","url":null,"abstract":"Phosphorus (P) recovery from wastewater, which contain large amounts of P by biochar can not only purify sewage, but promotes the reuse of P resources. The traditional enhancement of biochar's adsorption capacity through metal ion modification, such as with Ca 2+ , has shown promising results but is often hindered by high preparation costs. In this innovative work, we present a novel approach to prepare Ca-laden biochar (label as Ca-PSB) using egg-shells as a sustainable and low-cost calcium source. The biochar was prepared by peanut shell through anaerobic pyrolysis for 2 h at 400 °C under N 2 atmosphere. Three kinds of Ca-PSB were prepared according to the content of modifier (CaCl 2 ). The physiochemical properties of the Ca-PSBs were more conducive to adsorption of P. The economic cost of preparing was evaluated. The pore parameters were changed after the Ca modification. Especially, specific surface area of Ca-PSBs were increased by 4.82 %−12.05 % than raw biochar. The P adsorption capacity of Ca-PSB was 111.34 %−114.34 % higher than that of raw biochar. Ca-laden biochar showed excellent P adsorption, due to the Ca and CaO x on the Ca-PSB surface reacted with PO 4 3- through hydrogen bonds or through stable inorganic precipitation. This work provides an inexpensive strategy for preparing biochar with high efficiency for phosphorus adsorption.","PeriodicalId":11260,"journal":{"name":"Desalination and Water Treatment","volume":"320 1","pages":"100880-100880"},"PeriodicalIF":0.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147894520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 10

Preparation of composites of lithium-aluminum layered double hydroxides and biochar and their performance in lithium extraction from aqueous media 锂铝层状双氢氧化物与生物炭复合材料的制备及其在水萃取锂中的性能

4区工程技术

Desalination and Water Treatment Pub Date : 2024-10-01 DOI: 10.1016/j.dwt.2024.100843

Bing Mu, Xiaochuan Deng, Chaoliang Zhu, Ruirui Wang, Guowang Xu, Yongjie Zhu, Xiaoxiang He, Wenhua Ma, Jie Fan, Shutong Luo, Binju Qing

{"title":"Preparation of composites of lithium-aluminum layered double hydroxides and biochar and their performance in lithium extraction from aqueous media","authors":"Bing Mu, Xiaochuan Deng, Chaoliang Zhu, Ruirui Wang, Guowang Xu, Yongjie Zhu, Xiaoxiang He, Wenhua Ma, Jie Fan, Shutong Luo, Binju Qing","doi":"10.1016/j.dwt.2024.100843","DOIUrl":"https://doi.org/10.1016/j.dwt.2024.100843","url":null,"abstract":"Layered lithium aluminum double hydroxides (LiAl-LDH) have significant potential for industrial applications, particularly as adsorbents for lithium extraction from salt lakes. However, their development is constrained by a relatively low adsorption capacity. To address this limitation, a composite material comprising biochar (BC) and lithium aluminum layered double hydroxide (LiAl-LDH@BC) was synthesized via a hydrothermal reaction, using Al(NO 3 ) 3 ·9H 2 O, LiNO 3 , urea, and varying amounts of BC as raw materials. This composite demonstrates excellent Li + adsorption capacity (19.6 mg/g). LiAl-LDH@BC 2.5 was characterized using SEM, XRD, XPS, and other analytical methods. The effects of various adsorption conditions—including adsorption temperature, initial Li + concentration, time, pH, ion interference, and the number of cycles—on the Li + adsorption performance of LiAl-LDH@BC were investigated. The increased specific surface area and the electrostatic adsorption of surface functional groups after composite formation are the primary reasons for the high adsorption capacity. The mechanism of Li + adsorption follows pseudo-first-order kinetics and the Langmuir model, involving both physical and chemical adsorption. This study offers a promising adsorbent for the extraction of Li + from aqueous media. • LiAl-LDH@BC prepared via the hydrothermal method demonstrates excellent lithium ion adsorption capacity. • The doping amount of BC affects the specific surface area and surface charge of LiAl-LDH@BC. • The electrostatic attraction from the surface charge of BC, combined with adsorption by the vacancies in the LDH structure, work together to enhance the adsorption performance.","PeriodicalId":11260,"journal":{"name":"Desalination and Water Treatment","volume":"320 1","pages":"100843-100843"},"PeriodicalIF":0.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147887915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 5

Green treatment of turbid traditional Chinese medicine (TCM) wastewater: Optimization of UF-MD coupling process 浑浊中药废水的绿色处理：UF-MD耦合工艺的优化

4区工程技术

Desalination and Water Treatment Pub Date : 2024-09-30 DOI: 10.1016/j.dwt.2024.100810

Shuang Wu, Yansong Zhang, Shengnan Kong, Haiyang Yan, Chuanrun Li, Huchuan Wang

{"title":"Green treatment of turbid traditional Chinese medicine (TCM) wastewater: Optimization of UF-MD coupling process","authors":"Shuang Wu, Yansong Zhang, Shengnan Kong, Haiyang Yan, Chuanrun Li, Huchuan Wang","doi":"10.1016/j.dwt.2024.100810","DOIUrl":"https://doi.org/10.1016/j.dwt.2024.100810","url":null,"abstract":"In this paper, a hybrid system of ultrafiltration and membrane distillation was used to study the resourceful reuse of active compounds and water resources in traditional Chinese medicine wastewater. Pre-treatment of turbid wastewater by ultrafiltration (UF) was found to maximise the retention of macromolecular organic matter in the wastewater using a 10 kDa ultrafiltration membrane at a trans-membrane pressure of 0.15 MPa. The UF filtrate was subjected to vacuum membrane distillation (VMD) at 60 °C, 95 kPa, 36 L·h −1 , and pH = 3, which ultimately recovered about 85 % of chlorogenic acid as well as about 74 % of baicalin. The UF-MD system can effectively separate the large organic molecules, small molecules of active compounds and water in the turbid wastewater of traditional Chinese medicine, so as to realise the recovery and reuse of valuable resources in the turbid wastewater of traditional Chinese medicine. • Conventional processes focus only on the treatment of wastewater. This study not only enabled the wastewater to meet the discharge standard, but also further recovered the active substances in the wastewater of traditional Chinese medicine. • The UF process can significantly reduce the COD concentration of wastewater without affecting the concentration of active compounds. • The effects of temperature and pH on VMD flux and active compounds are more pronounced.","PeriodicalId":11260,"journal":{"name":"Desalination and Water Treatment","volume":"320 1","pages":"100810-100810"},"PeriodicalIF":0.0,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147910338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Efficient removal of Congo red by BiOCl/TiO2/montmorillonite photocatalytic material BiOCl/TiO2/蒙脱土光催化材料对刚果红的高效去除

4区工程技术

Desalination and Water Treatment Pub Date : 2024-09-30 DOI: 10.1016/j.dwt.2024.100808

Jianli Wang, Biyang Tuo, Xiulong Shi, Jinwang Tian

{"title":"Efficient removal of Congo red by BiOCl/TiO2/montmorillonite photocatalytic material","authors":"Jianli Wang, Biyang Tuo, Xiulong Shi, Jinwang Tian","doi":"10.1016/j.dwt.2024.100808","DOIUrl":"https://doi.org/10.1016/j.dwt.2024.100808","url":null,"abstract":"A series of BiOCl/TiO 2 /montmorillonite photocatalytic material (BTM) were prepared by sol-gel method combined with calcination process, and were used for the degradation of Congo red. The phase composition, morphology, and optical properties of the as-prepared materials were characterized by XRD, SEM, BET and UV–vis DRS. Compared with BiOCl and TiO 2 , BTM has a better removal effect on Congo red, in which BTM-20 has the highest photocatalytic activity. After 120 min of illumination, the degradation rate of Congo red by BTM-20 reached 94.04 %. The photocatalytic degradation process of Congo red by BTM-20 conformed to the pseudo-first-order kinetic model with a reaction constant of 0.00803 min −1 . The type-Ⅱ heterojunction between BiOCl and TiO 2 promotes the separation of photogenerated electron-hole pairs of BTM-20 and enhances the absorption for visible light. The experiment of the free radical capture indicated that superoxide radical played a leading role in photocatalytic degradation of Congo red, followed by hydroxyl radical. This study provides a new treatment ideas for environmental remediation, and provides an efficient photocatalytic material for the degradation of pollutant.","PeriodicalId":11260,"journal":{"name":"Desalination and Water Treatment","volume":"320 1","pages":"100808-100808"},"PeriodicalIF":0.0,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147919235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 5

Efficient removal of Cr(VI) containing tunnel wastewater by sludge biochar loaded with ferrous sulfate 负载硫酸亚铁的污泥生物炭高效去除含Cr（VI）隧道废水

4区工程技术

Desalination and Water Treatment Pub Date : 2024-09-17 DOI: 10.1016/j.dwt.2024.100786

Zhihui Zhao

{"title":"Efficient removal of Cr(VI) containing tunnel wastewater by sludge biochar loaded with ferrous sulfate","authors":"Zhihui Zhao","doi":"10.1016/j.dwt.2024.100786","DOIUrl":"https://doi.org/10.1016/j.dwt.2024.100786","url":null,"abstract":"The ease of agglomeration reduced the removal of pollutants by FeS particles. Hence, sludge biochar was employed as a support to produce FeS-loaded biochar composites (FeS@BC) using a solvothermal method, for removing Cr(VI) from wastewater. The performance and mechanism of Cr(VI) removal on FeS@BC were investigated through adsorption experiments and characterization techniques. The adsorption tests revealed that under optimal conditions of solution pH of 3 and dosage of 40 mg, FeS@BC achieved a removal efficiency of over 97 % for 50 mg/L Cr(VI). The presence of Cl - and NO - 3 did not affect Cr(VI) removal, whereas sulfate, phosphate, and carbonate inhibited the removal process. Low concentrations of humic acid (1–5 mg/L) held a negligible influence on removing, but elevated concentrations of humic acid inhibited Cr(VI) removal. The behavior of FeS@BC in removing Cr(VI) complied with to the pseudo-second-order and the Langmuir model. At 308.15 K, the largest removal capability of FeS@BC for Cr(VI) reached 185.874 mg/g. Thermodynamic studies confirmed that the Cr(VI) removing processes on FeS@BC were a spontaneous, entropy-driven, endothermic chemical adsorption. The primary mechanism for removing Cr(VI) on FeS@BC included reduction, electrostatic adsorption, complexation, and precipitation, with the reduction process playing a crucial role. This indicated that sludge biochar loaded with FeS was an ideal material for removing Cr(VI) from wastewater. ● FeS-loaded sludge biochar was prepared by the thermal dissolution method. ● The maximum removal capacity of FeS@BC for Cr(VI) reached 185.874 mg/g. ● The removal mechanism involved complexation, reduction, electrostatic interactions, and precipitation.","PeriodicalId":11260,"journal":{"name":"Desalination and Water Treatment","volume":"320 1","pages":"100786-100786"},"PeriodicalIF":0.0,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147906463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 4

Lignin-supported (Bi,Ti)2(O,S)3 bimetal oxysulfide catalysts for efficient catalytic reduction of organic dyes and Cr(VI) in the dark 木质素负载的（Bi,Ti）2(O，S)3双金属氧硫化物催化剂在黑暗中高效催化还原有机染料和Cr（VI）

4区工程技术

Desalination and Water Treatment Pub Date : 2024-09-12 DOI: 10.1016/j.dwt.2024.100770

Xiaoxia Chen, Xiaoxia Chen, Yu Ma, Zhengjie Su, Xinxin Zhang, Jinguo Lin, Xiaoyun Chen, Xiaoyun Chen

{"title":"Lignin-supported (Bi,Ti)2(O,S)3 bimetal oxysulfide catalysts for efficient catalytic reduction of organic dyes and Cr(VI) in the dark","authors":"Xiaoxia Chen, Xiaoxia Chen, Yu Ma, Zhengjie Su, Xinxin Zhang, Jinguo Lin, Xiaoyun Chen, Xiaoyun Chen","doi":"10.1016/j.dwt.2024.100770","DOIUrl":"https://doi.org/10.1016/j.dwt.2024.100770","url":null,"abstract":"Herrin, the lignin extracted from Rice hull , Phyllostachys edulis , Cunninghamia lanceolata, and Populus tomentosa Carrière were used as a soft support to grow Ti-doped Bi 2 (O,S) 3 bimetal oxysulfide catalysts, labeled BT-Rh, BT-Pe, BT-Cl, and BT-Ptc, respectively. The catalytic reduction activity was investigated through the decolorization of methyl orange (MO), methylene blue (MB), and reduction of Cr(VI) solutions under dark. The lignin-supported BiTiOS improved crystallinity, decreased aggregate size, increased specific surface area, and enhanced electrochemical active sites, leading to improve electron transfer and accelerated reduction rates. The catalytic reduction activity of organic dyes and Cr(VI) was significantly improved with lignin-supported BiTiOS. The 5 mg BT-Pe catalyst completely reduced 100 mL of 50 ppm MO, MB, and Cr(VI) solutions in 6, 6, and 18 min, respectively, with the reaction kinetic rate of 0.6782, 1.090, and 0.1189 min −1 , and demonstrated good durability, maintaining a reduction rate of 95 % after six cycles. This work provides a feasible approach combining biomass/inorganic materials to treat industrial wastewater. • First time reported lignin-supporting (Bi,Ti) 2 (O,S) 3 bimetal oxysulfide via a facile method. • Lignin-supporting BiTiOS has excellent catalytic reduction activity and high stability. • Lignin-template increased the electrochemical active site and improve the electron transfer. • A reaction mechanism for the rapid catalytic reduction of pollutants in the dark is proposed.","PeriodicalId":11260,"journal":{"name":"Desalination and Water Treatment","volume":"320 1","pages":"100770-100770"},"PeriodicalIF":0.0,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147900363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 8

Enhanced heterogeneous electro-Fenton degradation of salicylic acid by different Fe3O4 loaded carriers 不同负载Fe3O4载体增强水杨酸的非均相电fenton降解

4区工程技术

Desalination and Water Treatment Pub Date : 2024-08-23 DOI: 10.1016/j.dwt.2024.100723

Meiyu Zhang, Qiaohan Li, Hui-qiang Li, Ping Yang

{"title":"Enhanced heterogeneous electro-Fenton degradation of salicylic acid by different Fe3O4 loaded carriers","authors":"Meiyu Zhang, Qiaohan Li, Hui-qiang Li, Ping Yang","doi":"10.1016/j.dwt.2024.100723","DOIUrl":"https://doi.org/10.1016/j.dwt.2024.100723","url":null,"abstract":"Different types of materials were used as catalyst carriers to enhance the degradation of salicylic acid in the heterogeneous electro-Fenton system. During the experiments, activated carbon, carbon felt and carbon cloth were selected as carbon based materials, and sodium alginate, chitosan and polyvinyl alcohol were chosen as polymer matrix, and foam metal included zinc foam, iron foam and nickel foam (NF). The changes of surface structure and morphology of the above carriers were studied, and combined with the effects of the carriers on the degradation of salicylic acid in the electro-Fenton system. The NF was the best carrier materials for the heterogeneous electro-Fenton system, and Ni and Fe3O4 had synergistic effect in enhancing redox reactivity. With salicylic acid concentration of 100 mg/L, the temperature of 25 ℃ and the pH of 7, the NF@Fe3O4 achieved the best salicylic acid degradation performance after reaction for 2 h. The NF@Fe3O4 enhanced the performance of the electro-Fenton system, which provided a valuable reference for the application of heterogeneous catalyst carriers in the electro-Fenton system.","PeriodicalId":11260,"journal":{"name":"Desalination and Water Treatment","volume":"320 1","pages":"100723-100723"},"PeriodicalIF":0.0,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147892237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 7

Mechanistic insights into chlorinated hydrocarbons degradation with bromide ion presence in hydrogen peroxide and persulfate-based systems 在过氧化氢和过硫酸盐基体系中溴化物离子存在下氯代烃降解的机理

4区工程技术

Desalination and Water Treatment Pub Date : 2024-07-20 DOI: 10.1016/j.dwt.2024.100620

Xuanran Zhao, Wei Wang, Xin Song, Enwei Cao, Xueqiang Zhu, Shuguang Lyu

{"title":"Mechanistic insights into chlorinated hydrocarbons degradation with bromide ion presence in hydrogen peroxide and persulfate-based systems","authors":"Xuanran Zhao, Wei Wang, Xin Song, Enwei Cao, Xueqiang Zhu, Shuguang Lyu","doi":"10.1016/j.dwt.2024.100620","DOIUrl":"https://doi.org/10.1016/j.dwt.2024.100620","url":null,"abstract":"In this work, the effect of bromide ion (Br–) on 1,2,3-trichloropropane (TCP) and trichloroethylene (TCE) degradation in hydrogen peroxide (H2O2), peroxymonosulfate (PMS), and peroxydisulfate (PDS) oxidation processes was investigated. In ultrapure water, 100 %, 90 %, and 47.2 % TCE could be removed in H2O2/Fe(II), PMS/Fe(II), and PDS/Fe(II) systems within 60 min at selected dosages, respectively, while only H2O2/Fe(II) system was efficient for TCP removal (82.5 %). Compared with TCE, the negative effect of Br– on TCP removal was more obvious due to the poor TCP degradation by reactive halogen species. Besides, hydroxy radical (HO•)-based system (H2O2/Fe(II)) was more sensitive to Br– than sulfate radical (SO4–•)-based systems (PMS/Fe(II) and PDS/Fe(II)), because HO• was prone to react with Br– with a greater reaction rate constant. In the presence of Br–, the addition of citric acid or zero-valent iron (ZVI) promoted TCP and TCE degradation in SO4–•-mediated systems, while TCP and TCE removal in HO•-based system could be slightly enhanced by ZVI. In actual groundwater tests, both pre-adjusting solution pH to acidity for TCE removal in HO•-driven system and increasing chemical dosages in SO4–•-based systems could effectively degrade the target pollutants in the presence of Br–.","PeriodicalId":11260,"journal":{"name":"Desalination and Water Treatment","volume":"320 1","pages":"100620-100620"},"PeriodicalIF":0.0,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147914178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Preparation of layered lithium ion-sieve by solid-phase method and their lithium extraction performance 固相法制备层状锂离子筛及其锂萃取性能

4区工程技术

Desalination and Water Treatment Pub Date : 2024-06-20 DOI: 10.1016/j.dwt.2024.100547

Quanmin Liu, Jianxin Dong, Yueguang Yu

引用次数: 6