Journal of hazardous materials advances最新文献

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BaTiO3 Nanoparticles for highly efficient piezocatalytic reduction of toxic hexavalent chromium: Synthesis, optimization, and kinetic study 用于高效压电催化还原有毒六价铬的 BaTiO3 纳米粒子:合成、优化和动力学研究
IF 5.4
Journal of hazardous materials advances Pub Date : 2024-09-11 DOI: 10.1016/j.hazadv.2024.100468
{"title":"BaTiO3 Nanoparticles for highly efficient piezocatalytic reduction of toxic hexavalent chromium: Synthesis, optimization, and kinetic study","authors":"","doi":"10.1016/j.hazadv.2024.100468","DOIUrl":"10.1016/j.hazadv.2024.100468","url":null,"abstract":"<div><p>Drinking water contamination with heavy metals from industrial activities is an important issue. In particular, the hexavalent chromium ions Cr (VI) which are classified as group (A) carcinogens. Our research reports an effective removal of hexavalent chromium from water through the use of BaTiO<sub>3</sub> (BTO) as a piezocatalyst. We meticulously prepared pure tetragonal BTO by optimizing the synthesis parameters. The optimized BTO catalyst was utilized for the removal of Cr(VI) under applied mechanical force and removed up to 96 % of Cr(VI) from the solution. Our kinetic study revealed that the reaction follows a pseudo-first order. Thermodynamic studies indicated that the reaction is most spontaneous at temperatures of 20 °C and concentrations of 20 ppm. Our proposed mechanism for removing Cr(VI) by BTO piezocatalysts suggests that only 15 % of chromium was removed by adsorption, while the rest was removed by reduction through the piezocatalytic process.</p></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":null,"pages":null},"PeriodicalIF":5.4,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S277241662400069X/pdfft?md5=524befd91f00627503305dcf89a10e2a&pid=1-s2.0-S277241662400069X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142232818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thermal degradation of waste medical masks to light olefins in a two-stage process 废医用口罩在两阶段工艺中热降解为轻质烯烃
IF 5.4
Journal of hazardous materials advances Pub Date : 2024-09-11 DOI: 10.1016/j.hazadv.2024.100472
{"title":"Thermal degradation of waste medical masks to light olefins in a two-stage process","authors":"","doi":"10.1016/j.hazadv.2024.100472","DOIUrl":"10.1016/j.hazadv.2024.100472","url":null,"abstract":"<div><p>The treatment of waste plastics is currently one of the most urgent environmental issues, and disposable medical masks (DMMs) are becoming increasingly important in the recycling of waste plastics. This study employs thermogravimetric analysis (TGA) combined with infrared spectroscopy (IR) and mass spectrometry (MS), and pyrolysis/gas chromatography/mass spectrometry (PyGC-MS) to investigate the thermal degradation of DMMs, including pyrolysis characteristics, kinetics, and products distribution. DMMs are composed of five layers, i.e., layers 1, 2 and 3 are the mask body, layer 4 is the mask strap, and layer 5 is the nose clip. Except layer 4, all the other layers could be entirely decomposed at 500 °C and have similar pyrolysis properties to PP. Alkanes, olefins, and diolefins with a wide carbon number distribution are produced at low temperature, while light olefins are more likely to be generated at high temperature. Accordingly, a two-stage pyrolysis reactor is applied to decompose DMMs to valuable products. After optimizing the operating conditions, the yield of light olefins reaches a maximum of 70.4 wt% at 800 °C in the second-stage pyrolysis of DMMs, where the yields of ethylene, propylene, and butene are 12.0 wt%, 28.0 wt%, and 29.6 wt%, respectively.</p></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":null,"pages":null},"PeriodicalIF":5.4,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772416624000731/pdfft?md5=6d54aaccbadcc842dc21b2fb208ac363&pid=1-s2.0-S2772416624000731-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142232817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hydrothermal synthesis of BCQD@g-C3N4 nanocomposites supporting environmental sustainability: Organic dye removal and bacterial inactivation 水热合成支持环境可持续性的 BCQD@g-C3N4 纳米复合材料:去除有机染料和灭活细菌
IF 5.4
Journal of hazardous materials advances Pub Date : 2024-09-07 DOI: 10.1016/j.hazadv.2024.100464
{"title":"Hydrothermal synthesis of BCQD@g-C3N4 nanocomposites supporting environmental sustainability: Organic dye removal and bacterial inactivation","authors":"","doi":"10.1016/j.hazadv.2024.100464","DOIUrl":"10.1016/j.hazadv.2024.100464","url":null,"abstract":"<div><p>Various studies are being carried out on the removal of organic dyes and the production of antibacterial agents. In this study, boron-doped carbon quantum dot (BCQD) was synthesized by hydrothermal method, and BCQD@g-C<sub>3</sub>N<sub>4</sub> nanocomposite structure was synthesized using graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) as the support material. The photocatalytic activity of the synthesized nanocomposite against MO, RhB dyes, and <em>Escherichia coli</em> (<em>E. coli</em>) bacteria was investigated. The surface, morphology, molecular, and crystal properties of BCQD@g-C<sub>3</sub>N<sub>4</sub> were investigated using characterization methods such as Transmission electron microscopy (TEM), Fourier Transform Infrared Spectroscopy (FTIR), Fluorescence (FL) spectrophotometer, and X-ray diffraction (XRD). As a result of TEM analysis, it was determined that the average particle size of BCQD was 5.1 ± 1.14 nm and showed a homogeneous distribution on 2D g-C<sub>3</sub>N<sub>4</sub>. In the XRD spectrum for BCQDs, the diffraction peak corresponding to the (002) amorphous carbon phase was observed at 21.65° In the PL spectrum of B-CQD@g-C<sub>3</sub>N<sub>4</sub>s, the emission value was observed at 458 nm. In the study conducted by taking advantage of the photocatalytic feature of BCQD@g-C<sub>3</sub>N<sub>4</sub> nanocomposite, Rhodamine B (RhB) and Methyl orange (MO) were degraded by 65.58 % and 73.56 %, respectively, at the end of 120 min. Additionally, BCQD@g-C<sub>3</sub>N<sub>4</sub> photocatalyst completely inhibited the growth of <em>E. coli</em> bacteria, which are frequently encountered in wastewater, at 90 minutes under sunlight. <em>Escherichia coli</em> (<em>E. coli</em>), which is frequently encountered in wastewater, BCQD@g-C<sub>3</sub>N<sub>4</sub> completely prevented bacterial growth in the 90<sup>th</sup> minute under sunlight.</p></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":null,"pages":null},"PeriodicalIF":5.4,"publicationDate":"2024-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772416624000652/pdfft?md5=04df47d74dcb2e859f8610777d5f4cd7&pid=1-s2.0-S2772416624000652-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142229038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Interactions of per- and polyfluoroalkyl substances with polypropylene plastic and borosilicate glass: Resolving key uncertainties for accurate analysis 全氟和多氟烷基物质与聚丙烯塑料和硼硅玻璃的相互作用:解决准确分析的关键不确定性
IF 5.4
Journal of hazardous materials advances Pub Date : 2024-09-07 DOI: 10.1016/j.hazadv.2024.100463
{"title":"Interactions of per- and polyfluoroalkyl substances with polypropylene plastic and borosilicate glass: Resolving key uncertainties for accurate analysis","authors":"","doi":"10.1016/j.hazadv.2024.100463","DOIUrl":"10.1016/j.hazadv.2024.100463","url":null,"abstract":"<div><p>This study addresses critical uncertainties regarding the interactions of per- and polyfluoroalkyl substances (PFAS) with plastic (e.g., polypropylene, PP) and borosilicate glass materials, which are either recommended or advised against by prevalent analytical methods. Our results indicate that borosilicate glass minimally adsorbs short-chain, moderate-chain, and some long-chain PFAS with &lt;11 perfluorinated carbons, maintaining the integrity of PFAS solutions. The ratios of PFAS concentrations in solutions contained in borosilicate glass compared to those in solutions unaffected by laboratory ware interaction showed minimal deviation, with most compounds displaying values within the established acceptable limits of 87 % to 107 % for C3‒C10 PFAS. Similarly, PP tubes, syringes, and pipette tips also demonstrated minimal or moderate interactions: perfluorooctanoate (PFOA) and perfluorooctanesulfonate (PFOS) showed relatively consistent recoveries in PP syringes and pipette tips, ranging from 96 % to 107 % and minimal adsorption to PP centrifuge tubes during a 105-h contact period. Both materials, however, showed significant adsorption of the longest-chain PFAS in this study (C11), pointing to enhanced adsorption due to their hydrophobic nature. However, microfilters demonstrate significant adsorption of long-chain PFAS, including PFOA and PFOS. We developed a Gradient Flush Syringe Method to mitigate adsorption losses on syringe filters, achieved a significant reduction in C11 PFAS retention on filters from &gt;90 % to nearly 0.01 %. Methanol-induced matrix effects were also studied, showed that increasing methanol concentrations led to artificially increasing the analyzed concentration of short-chain PFAS from the true concentration.</p></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":null,"pages":null},"PeriodicalIF":5.4,"publicationDate":"2024-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772416624000640/pdfft?md5=a804e335b65ff57e0618898c5597a546&pid=1-s2.0-S2772416624000640-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142229039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Recent advancement in microplastic removal process from wastewater - A critical review 废水中微塑料去除工艺的最新进展 - 综述
IF 5.4
Journal of hazardous materials advances Pub Date : 2024-08-31 DOI: 10.1016/j.hazadv.2024.100460
{"title":"Recent advancement in microplastic removal process from wastewater - A critical review","authors":"","doi":"10.1016/j.hazadv.2024.100460","DOIUrl":"10.1016/j.hazadv.2024.100460","url":null,"abstract":"<div><p>Microplastics, small sized plastic particles having size &lt;5 mm are formed through primary process including production of beauty products, microbeads and microfibres as well as secondary process including mechanical weathering, friction, aberration and fragmentation of large plastics. The major sources of microplastics are land-based and ocean-based sources. Microplastic pollution is a serious concern due to the persistent, low biodegradability and bio-accumulative behaviour. Microplastics can bioaccumulate in the food chain and can cause ecological and human health risk. Hence, it is important to remove from the aquatic ecosystems. Microplastics are removed from aquatic systems and wastewater through a series of processes such as physical, chemical and biological treatments. In the present articles, &gt;250 articles are reviewed to collect the information regarding the various physical, chemical and biological methods for the removal of microplastics. Also, the probable control strategies to combat with plastic pollution were assessed. It was concluded that recent water treatment methods are efficient in removing microplastic pollution. The efficiencies to remove microplastic from the water ranged between 74 %-99.2 %, 65 %-99.20 % and 77 %-100 % for physical, chemical and biological treatment methods, respectively. Among the three treatment methods, physical methods especially the filtration of water from biochar is the most efficient way (efficiency up to 100 %) to remove microplastics. It was also concluded that creating public awareness, promoting reusing, recycling and reducing, and application of bioplastics can control the production of microplastics from plastic wastes. This review will be useful to add current knowledge regarding the abatement of microplastic pollution, and finding novel solution to control microplastics. This review will also help the policymakers to implement most effective and cost-efficient method to remove microplastics, and to find out new methods to reduce, reuse and recycle plastic wastes.</p></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":null,"pages":null},"PeriodicalIF":5.4,"publicationDate":"2024-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772416624000615/pdfft?md5=d1fe7e0b600cbcdd37b32b56e2a06905&pid=1-s2.0-S2772416624000615-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142158453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study and characterization of zeolites for the removal of artificial radionuclides in wastewater samples from nuclear power plants 用于去除核电厂废水样本中人工放射性核素的沸石的研究和特性分析
IF 5.4
Journal of hazardous materials advances Pub Date : 2024-08-28 DOI: 10.1016/j.hazadv.2024.100458
{"title":"Study and characterization of zeolites for the removal of artificial radionuclides in wastewater samples from nuclear power plants","authors":"","doi":"10.1016/j.hazadv.2024.100458","DOIUrl":"10.1016/j.hazadv.2024.100458","url":null,"abstract":"<div><p>4A, 13X, phillipsite and chabazite zeolites have been characterized regarding their capacity to remove Cs<sup>+</sup> and Co<sup>2+</sup> ions from aqueous solutions. The aim is to simulate the decontamination process of radioactive wastewater, originating from the former Garigliano nuclear plant in Italy, which is contaminated with <sup>137</sup>Cs and <sup>60</sup>Co. The four zeolites, in powder state, have been tested with solutions containing cesium nitrate and cobalt nitrate hexahydrate, in both individual and combined configurations, at different solid/liquid ratios. The Cs<sup>+</sup> and Co<sup>2+</sup> concentrations have been monitored over time by inductively coupled plasma (ICP) spectrometry. The results demonstrate the high efficacy of 13X zeolite providing almost 100 % of removal of both elements in a relatively short time (20–30 min). These findings are the basis for the kinetic characterization of the zeolite using radioactive solutions and, hence, for the setup of an in-situ pre-pilot plant to carry out tests with contaminated wastewater at the Garigliano facility. 13X zeolite presents a promising alternative for decommissioning radioactive wastewater.</p></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":null,"pages":null},"PeriodicalIF":5.4,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772416624000597/pdfft?md5=2bcd4d960d9e65cfa7cdf1e75b9e2398&pid=1-s2.0-S2772416624000597-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142148575","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Leaching of base metals in PCBs and copper cementation by iron powder 多氯联苯中基本金属的沥滤和铁粉对铜的胶结作用
IF 5.4
Journal of hazardous materials advances Pub Date : 2024-08-01 DOI: 10.1016/j.hazadv.2024.100449
{"title":"Leaching of base metals in PCBs and copper cementation by iron powder","authors":"","doi":"10.1016/j.hazadv.2024.100449","DOIUrl":"10.1016/j.hazadv.2024.100449","url":null,"abstract":"<div><p>When dealing with electronic waste, printed circuit boards (PCBs) are some of the most important materials in terms of recovery possibilities, because of their high content of precious metals and base metals, notably copper (&gt; 20% w/w), in addition to organic resins and ceramic materials. Efficient hydrometallurgical metals recovery from electronic waste is an important on-going research topic, and the present study consisted in the development of a process for the concentration of precious metals by leaching and recovery of major base metals mainly copper.</p><p>A fraction of crushed PCBs concentrated in metals with more than 50 % copper was used for the leaching tests for two types of components: processor cards and mobile phone cards. For the leaching process, two steps were carried out. A first step consisted in leaching the concentrate three times with sulfuric acid and hydrogen peroxide, a second step consisted in lead removal by nitric acid leaching.</p><p>The obtained results exhibit that, for processor cards, the first stage of leaching allowed the extraction of about 98 % of copper. Other base metals, zinc (99.8 %) and nickel (96 %) were also significantly leached. Precious metals were less leached except Ag with 88 % of release. The second stage of leaching with nitric acid allowed significant removal of lead (66 %). For mobile phone cards, the first stage of leaching led to an almost complete extraction of Cu (&gt;98 %) and some other base metals (Fe, Ni, Sn, and Zn &gt; 90 %). Al, Co and Mn were also extracted at 76 %, 78 % and 81 % respectively. Precious metals remained in the residue, except Pd which was leached at 16 %. The second stage of leaching with dilute nitric acid solution was not necessary for mobile phone cards, as it was responsible of an important Ag release from residue (80 %).</p></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":null,"pages":null},"PeriodicalIF":5.4,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772416624000500/pdfft?md5=4f5da475e018c24c2f92dbe3d5a2b188&pid=1-s2.0-S2772416624000500-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141850913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ibuprofen removal from water using the IB-COF covalent organic framework 利用 IB-COF 共价有机框架去除水中的布洛芬
IF 5.4
Journal of hazardous materials advances Pub Date : 2024-08-01 DOI: 10.1016/j.hazadv.2024.100451
{"title":"Ibuprofen removal from water using the IB-COF covalent organic framework","authors":"","doi":"10.1016/j.hazadv.2024.100451","DOIUrl":"10.1016/j.hazadv.2024.100451","url":null,"abstract":"<div><p>The rising presence of ibuprofen (IBP) in natural water bodies, restricting from its widespread pharmaceutical usage, necessitates effective remediation strategies. This study introduces IB-COF, a novel covalent organic framework synthesized via a solvothermal method, specifically engineered for IBP extraction from aqueous solutions. IB-COF showcases remarkable adsorption performance, achieving equilibrium within 60 min with a capacity of 512 mg/g, outperforming conventional adsorbents. Its adsorption kinetics align with pseudo-second-order and Langmuir models, indicating efficient monolayer adsorption. Significantly, IB-COF exhibits robust recyclability over five cycles. Among the prevalence of IBP contamination, IB-COF demonstrates promise in selectively extracting IBP even in the presence of competing pharmaceuticals. Overall, our findings underscore the potential of IB-COF as an advanced adsorbent for mitigating IBP pollution in water sources, contributing significantly to environmental purification efforts and water pollution mitigation strategies.</p></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":null,"pages":null},"PeriodicalIF":5.4,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772416624000524/pdfft?md5=b3f2d0237f6ccd30f8124630e2d1a815&pid=1-s2.0-S2772416624000524-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141953161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Insights on leaching, adsorption–desorption of spirotetramat and its four metabolites on “Third Pole” pollution-free area:Qinghai–Tibet Plateau 对青藏高原 "第三极 "无污染地区螺环酯及其四种代谢物的浸出、吸附和解吸的深入研究
IF 5.4
Journal of hazardous materials advances Pub Date : 2024-08-01 DOI: 10.1016/j.hazadv.2024.100453
{"title":"Insights on leaching, adsorption–desorption of spirotetramat and its four metabolites on “Third Pole” pollution-free area:Qinghai–Tibet Plateau","authors":"","doi":"10.1016/j.hazadv.2024.100453","DOIUrl":"10.1016/j.hazadv.2024.100453","url":null,"abstract":"<div><p>The use of pesticides has led to increased soil and water pollution, which has even affected the world's third pole, the Tibetan Plateau. In this study, the adsorption and desorption experiments of spirotetramat on three typical soils were conducted to investigate the migration and leaching risk of pesticides in the Qinghai-Tibet Plateau ecosystem. We used batch equilibrium technique for adsorption-desorption experiments and evaluated leaching risk by computational simulation experiments under laboratory conditions. The Freundlich adsorption constants K<sub>f</sub> of spirotetramat in the soils of Haidong, Haixi and Haibei were as follows: At 22.26, 15.13 and 6.85, the maximum adsorption capacity C<sub>max</sub> was 434.80, 217.40 and 169.50 mg kg<sup>-1</sup>, the average adsorption rates were 77.92, 54.27 and 39.13 %, and the desorption constants (K<sub>f</sub>) were 43.27, 22.35 and 11.56, respectively. The hysteresis coefficient HI&gt;1.00 in the soil of Haidong and Haixi, and 0.70&lt;HI&lt;1.00 in the soil of Haibei, indicating that with the increase of temperature, the adsorption capacity of the tested soil for spirotetramat decreases, which increases the migration risk of pesticides. The desorption of spirotetramat in the soil of Haidong and Haixi has a lag. The GUS values of spirotetramat in the soils of Haidong, Haixi and Haibei were 1.15, 1.63 and 1.72, respectively, which were all lower than 1.80, indicating that spirotetramat was a non-leaching pesticide, and the leaching risk of spirotetramat in the soils of Qinghai was small, and the potential harm to groundwater was at a low level.</p></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":null,"pages":null},"PeriodicalIF":5.4,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772416624000548/pdfft?md5=5dcc2c8dea4fb4bfe1a38accb845fb86&pid=1-s2.0-S2772416624000548-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142098966","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Removal of contaminants from river Jakara using iron oxide nano particles prepared from Citrullus lanatus fruit waste 利用瓜果废料制备的氧化铁纳米颗粒去除 Jakara 河中的污染物
IF 5.4
Journal of hazardous materials advances Pub Date : 2024-08-01 DOI: 10.1016/j.hazadv.2024.100450
{"title":"Removal of contaminants from river Jakara using iron oxide nano particles prepared from Citrullus lanatus fruit waste","authors":"","doi":"10.1016/j.hazadv.2024.100450","DOIUrl":"10.1016/j.hazadv.2024.100450","url":null,"abstract":"<div><p>Achieving sustainable development requires efficient waste water treatment. Green synthesized iron nanoparticles have attracted much attention as potential catalysts for water remediation in view of their lost cost, high reactivity and good adsorption capacity. This study investigated the applicability of iron oxide nanoparticles synthesized from <em>Citrullus lanatus</em> fruit waste (IONP) in the remediation of contaminated water samples that were collected from River Jakara in Kano State Nigeria. The prepared nanoparticle was characterized using Brunauer–Emmett–Teller (BET) surface area, Scanning Electron Microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy and Thermogravimetric Analysis (TGA). The BET results revealed that IONP have large surface area and are nanometer sized particles. SEM analysis indicated that the adsorbent contain microsphere which might have facilitated the efficient purification of the river water while TGA study revealed that the adsorbent exhibited a three step decomposition process. Data obtained from XRD indicated that the synthesized adsorbent is of high purity and crystalline in nature with an average particle size of 17 nm. Results obtained after treatment of the river water with the adsorbent gave enhanced values of Total Dissolved Solids, Turbidity, Chemical Oxygen Demand, Dissolved Oxygen, phosphate and pH; thus confirming the high adsorption ability of the prepared nanoparticles. The percentage removal of Ni(II) Pb (II) and Cd (II) ions in the river water by IONP was found to depend on adsorbent concentration, agitation time and pH. The adsorption process of these metal ions onto the adsorbent was best described by the Langmuir isotherm model and followed pseudo second order kinetics. The regeneration stability of the adsorbent was adequate when treated with the heavy metals ions at optimum conditions. The nanoparticle synthesized from <em>Citrullus lanatus</em> waste was found to be an efficient and environmentally friendly alternative for treatment of contaminated water.</p></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":null,"pages":null},"PeriodicalIF":5.4,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772416624000512/pdfft?md5=914ade04efe0b491c4749307a0c76f79&pid=1-s2.0-S2772416624000512-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141841527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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