Water Resources and Industry最新文献

Bio-waste to environmental purifier: Application of potato peel for acid red 73 adsorption from leather dyeing effluent

IF 4.5 3区工程技术 Q1 WATER RESOURCES

Water Resources and Industry

Pub Date : 2025-01-28 DOI: 10.1016/j.wri.2025.100281

Fatema-Tuj Zohra , Sobur Ahmed , Md Zahangir Alam , Md Nurnabi , Nazia Rahman

Potato peel powder (PP) was prepared from kitchen wastes and explored in removal of Acid Red 73 (AR 73) dye from leather dyeing effluent. PP was characterized through FTIR, BET, SEM, XRD and EDX analysis. SEM micrographs illustrated rough and porous structure of PP that support the adsorption process. FTIR spectrum exhibited the changes caused by formation of hydrogen bonding, complex bonding, or other electrostatic interaction after dye adsorption. Wide and frail peaks in the XRD image indicated existence of amorphous carbon. BET analysis exhibited mesoporous structure of PP with average pore diameter of 85.98 Å. The impact of various influences viz. pH, dosages, concentration, time and temperature were explored through batch investigation. The maximum AR73 dye adsorption capacity of PP was 258.39 mg/g. The dye adsorption on PP complied both the Langmuir (R² = 0.989) and Freundlich (R² = 0.993) isotherm, preferably Freundlich model. The pseudo-second-order kinetic model (R² = 0.999) was fitted better, i.e. chemisorption. The equilibrium adsorption capacity was 135.34 ± 1.59 mg/g at 298 K, which was decreased to 125.34 ± 1.81, 114.27 ± 1.43, and 104.08 ± 1.53 mg/g at 308, 318 and 328 K, respectively. Negative Gibbs free energy (ΔG) revealed that adsorption of AR 73 dye on PP was spontaneous. In real sample analysis, about 98.17 ± 0.58 % dye removal was obtained with 137.39 ± 2.46 mg/g capacity. This research revealed that PP has a good prospect for the application of AR 73 dye removal from leather dyeing effluent.

{"title":"Bio-waste to environmental purifier: Application of potato peel for acid red 73 adsorption from leather dyeing effluent","authors":"Fatema-Tuj Zohra , Sobur Ahmed , Md Zahangir Alam , Md Nurnabi , Nazia Rahman","doi":"10.1016/j.wri.2025.100281","DOIUrl":"10.1016/j.wri.2025.100281","url":null,"abstract":"<div><div>Potato peel powder (PP) was prepared from kitchen wastes and explored in removal of Acid Red 73 (AR 73) dye from leather dyeing effluent. PP was characterized through FTIR, BET, SEM, XRD and EDX analysis. SEM micrographs illustrated rough and porous structure of PP that support the adsorption process. FTIR spectrum exhibited the changes caused by formation of hydrogen bonding, complex bonding, or other electrostatic interaction after dye adsorption. Wide and frail peaks in the XRD image indicated existence of amorphous carbon. BET analysis exhibited mesoporous structure of PP with average pore diameter of 85.98 Å. The impact of various influences viz. pH, dosages, concentration, time and temperature were explored through batch investigation. The maximum AR73 dye adsorption capacity of PP was 258.39 mg/g. The dye adsorption on PP complied both the Langmuir (R<sup>2</sup> = 0.989) and Freundlich (R<sup>2</sup> = 0.993) isotherm, preferably Freundlich model. The pseudo-second-order kinetic model (R<sup>2</sup> = 0.999) was fitted better, i.e. chemisorption. The equilibrium adsorption capacity was 135.34 ± 1.59 mg/g at 298 K, which was decreased to 125.34 ± 1.81, 114.27 ± 1.43, and 104.08 ± 1.53 mg/g at 308, 318 and 328 K, respectively. Negative Gibbs free energy (ΔG) revealed that adsorption of AR 73 dye on PP was spontaneous. In real sample analysis, about 98.17 ± 0.58 % dye removal was obtained with 137.39 ± 2.46 mg/g capacity. This research revealed that PP has a good prospect for the application of AR 73 dye removal from leather dyeing effluent.</div></div>","PeriodicalId":23714,"journal":{"name":"Water Resources and Industry","volume":"33 ","pages":"Article 100281"},"PeriodicalIF":4.5,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143161303","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Assessment of changes occurring in biochar/zeolite substrates used in the vegetation-activated sludge process in the treatment of leachate from landfills

IF 4.5 3区工程技术 Q1 WATER RESOURCES

Water Resources and Industry

Pub Date : 2025-01-17 DOI: 10.1016/j.wri.2025.100280

Aleksandra Wdowczyk , Agata Szymańska-Pulikowska , Jacek Chęcmanowski , Krzysztof Kierzek , Paweł Wiercik

Leachate management remains one of the key technological challenges in landfill operations. There is a growing need for methods that can effectively treat leachate directly at its source. One promising approach is the vegetation-activated sludge process (V-ASP), which integrates constructed wetlands with conventional activated sludge treatment. Given the limited research on V-ASP systems, this study explored the potential of low-cost adsorbent materials—zeolite and sunflower husk biochar—to enhance leachate treatment. The absorption properties of these materials in various V-ASP configurations were analysed using Fourier Transform Infrared Spectroscopy (FTIR) and scanning electron microscope (SEM) to better understand the mechanisms involved in pollutant removal. For most of the parameters analysed (Chemical Oxygen Demand, total nitrogen, organic nitrogen, total phosphorus, nitrites, sulfates, chlorides, Zn, Cu, Ni), the best reductions were achieved with zeolite substrates at a hydraulic retention time (HRT) of 14 days. Ammonium nitrogen removal was highly efficient, maintaining rates between 99 % and 99.8 % throughout the entire experimental period. Total nitrogen removal varied, with a minimum reduction of 13.1 % and a maximum of over 74 %. FTIR spectra confirmed alterations in the functional groups and surface characteristics of zeolite and biochar, evidenced by shifts in the bands of functional groups due to absorption. These findings could help improve leachate management strategies and aid in designing treatment systems that can be deployed directly at landfill sites.

{"title":"Assessment of changes occurring in biochar/zeolite substrates used in the vegetation-activated sludge process in the treatment of leachate from landfills","authors":"Aleksandra Wdowczyk , Agata Szymańska-Pulikowska , Jacek Chęcmanowski , Krzysztof Kierzek , Paweł Wiercik","doi":"10.1016/j.wri.2025.100280","DOIUrl":"10.1016/j.wri.2025.100280","url":null,"abstract":"<div><div>Leachate management remains one of the key technological challenges in landfill operations. There is a growing need for methods that can effectively treat leachate directly at its source. One promising approach is the vegetation-activated sludge process (V-ASP), which integrates constructed wetlands with conventional activated sludge treatment. Given the limited research on V-ASP systems, this study explored the potential of low-cost adsorbent materials—zeolite and sunflower husk biochar—to enhance leachate treatment. The absorption properties of these materials in various V-ASP configurations were analysed using Fourier Transform Infrared Spectroscopy (FTIR) and scanning electron microscope (SEM) to better understand the mechanisms involved in pollutant removal. For most of the parameters analysed (Chemical Oxygen Demand, total nitrogen, organic nitrogen, total phosphorus, nitrites, sulfates, chlorides, Zn, Cu, Ni), the best reductions were achieved with zeolite substrates at a hydraulic retention time (HRT) of 14 days. Ammonium nitrogen removal was highly efficient, maintaining rates between 99 % and 99.8 % throughout the entire experimental period. Total nitrogen removal varied, with a minimum reduction of 13.1 % and a maximum of over 74 %. FTIR spectra confirmed alterations in the functional groups and surface characteristics of zeolite and biochar, evidenced by shifts in the bands of functional groups due to absorption. These findings could help improve leachate management strategies and aid in designing treatment systems that can be deployed directly at landfill sites.</div></div>","PeriodicalId":23714,"journal":{"name":"Water Resources and Industry","volume":"33 ","pages":"Article 100280"},"PeriodicalIF":4.5,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143161302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Arsenic leakage crisis in supply chain of battery storage materials: Water quality footprint of cobalt mining demands action

IF 4.5 3区工程技术 Q1 WATER RESOURCES

Water Resources and Industry

Pub Date : 2025-01-17 DOI: 10.1016/j.wri.2025.100277

Anna C. Schomberg , Wolf von Tümpling , Ellen Kynast

Uncontrolled mine site leakage poses massive indirect environmental pollution, particularly when harmful substances, like arsenic, infiltrate water bodies, affecting humans. Arsenic contamination, recognized as a severe environmental catastrophe, exemplifies the water quality footprint from a Moroccan cobalt mine supplying electric car construction. Applying the water quality footprint method, we determined that 30–615 m³ of virtual dilution water per electric car would be needed to reduce arsenic pollution below natural background levels in a scenario that assumes that 49 % of the cobalt from the respective mine enters the production of battery materials aligning with recent global cobalt demand and use figures. In such a scenario, this single mine's water quality footprint would constitute up to 0.15 % of Morocco's annual water availability, concerning all electric cars produced annually with cobalt from this mine, and would take up half the annual capacity of one seawater desalination plant. While the databasis ouf our analysis is limited and uncertainties are high, our findings underscore the need to avoid problem shifting so that climate-friendly technologies can develop their potential, prompt reflection on due diligence in supply chains under German and upcoming European legislation and highlight the shared responsibility of industry, society and politics.

{"title":"Arsenic leakage crisis in supply chain of battery storage materials: Water quality footprint of cobalt mining demands action","authors":"Anna C. Schomberg , Wolf von Tümpling , Ellen Kynast","doi":"10.1016/j.wri.2025.100277","DOIUrl":"10.1016/j.wri.2025.100277","url":null,"abstract":"<div><div>Uncontrolled mine site leakage poses massive indirect environmental pollution, particularly when harmful substances, like arsenic, infiltrate water bodies, affecting humans. Arsenic contamination, recognized as a severe environmental catastrophe, exemplifies the water quality footprint from a Moroccan cobalt mine supplying electric car construction. Applying the water quality footprint method, we determined that 30–615 m<sup>3</sup> of virtual dilution water per electric car would be needed to reduce arsenic pollution below natural background levels in a scenario that assumes that 49 % of the cobalt from the respective mine enters the production of battery materials aligning with recent global cobalt demand and use figures. In such a scenario, this single mine's water quality footprint would constitute up to 0.15 % of Morocco's annual water availability, concerning all electric cars produced annually with cobalt from this mine, and would take up half the annual capacity of one seawater desalination plant. While the databasis ouf our analysis is limited and uncertainties are high, our findings underscore the need to avoid problem shifting so that climate-friendly technologies can develop their potential, prompt reflection on due diligence in supply chains under German and upcoming European legislation and highlight the shared responsibility of industry, society and politics.</div></div>","PeriodicalId":23714,"journal":{"name":"Water Resources and Industry","volume":"33 ","pages":"Article 100277"},"PeriodicalIF":4.5,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143161301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Assessing water dependencies and risks in Dutch industries: Distribution, consumption and future challenges

IF 4.5 3区工程技术 Q1 WATER RESOURCES

Water Resources and Industry

Pub Date : 2025-01-08 DOI: 10.1016/j.wri.2025.100279

C.J. Teo , J. Poinapen , J.A.M.H. Hofman , T. Wintgens

This research examined the water dependencies and associated risks in Dutch industries by focusing on three main aspects: the geographical distribution of industrial clusters relative to water sources, water consumption and its economic value across different sectors, and future water stress scenarios with their regional implications. The study uncovered a complex relationship between industrial facility location and water use. It revealed a strong correlation between facilities and nearby water sources, with a tendency for industries to cluster around water sources, peaking at a proximity of about 0–5 km for both surface water and groundwater sources. However, it also pointed out that this relationship is influenced by several other factors including water quality, extraction rights, historical development, and competition for water resources. Additionally, the analysis underlined the importance of considering both water consumption and proximity to water sources to accurately assess dependency. It advocated a more sophisticated approach that moves beyond mere water usage per unit of output to encompass the production complexities that significantly affect water dependency in particular industries. The future projection showed baseline water stress impacts the security of water supply of industries at different magnitude. Particularly, North Brabant and Limburg stood out as particularly vulnerable. These regions hold a significant portion of the studied industrial facilities (21.7 %) and dominate the nation's mineral industry (75 %). The study acknowledged the drawbacks of depending solely on average sectoral data and stresses the urgency for proactive water management strategies. These insights laid a solid groundwork for further research and the implementation of targeted water conservation and sustainable production measures within the Dutch manufacturing sector and beyond as water management issues have global relevance. This study suggested areas for further exploration such as exploring different circular water strategies, industrial symbiosis, leveraging digital technology for optimising water management, and utilising alternative water sources.

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引用次数: 0

Application of response surface methodology in optimizing MOF5@Fe3O4 catalyst for activating peroxymonosulfate in the degradation of reactive black 5 dye

IF 4.5 3区工程技术 Q1 WATER RESOURCES

Water Resources and Industry

Pub Date : 2025-01-07 DOI: 10.1016/j.wri.2025.100278

Nezamaddin Mengelizadeh , Najmeh Ahmadi , Davoud Balarak

Magnetic nanoparticles (Fe₃O₄) were loaded onto metal-organic framework (MOF-5) as an activator for peroxymonosulfate (PMS) in the decomposition of the dye reactive black 5 (RB5). Modeling and optimization of operational parameters were performed using response surface methodology coupled with central composite design (RSM-CCD). The maximum removal efficiency of RB5 was predicted under laboratory conditions, including pH of 11, catalyst dosage of 1 g/L, RB5 concentration of 10 mg/L, temperature of 50 °C, and reaction time of 60 min. High values of confidence coefficient (R²) and F-value indicated that the present model could explain most of the data and could also be used to predict efficiency within a design space. Also, the adsorption capacity was equal to 99.2 mg/g. The efficiency of the MOF-5@Fe₃O₄/PMS system in removing RB5 was higher than that of standalone systems such as adsorption and PMS. Stability tests revealed that the synthesized catalyst could be reused for six consecutive reaction cycles with a negligible decline in dye removal efficiency (<4.3 %) and total organic carbon (TOC) removal (<5.50 %). Trapping experiments using ethanol and tert-butyl alcohol scavengers confirmed the presence of sulfate (SO₄^•-) and hydroxyl (^•OH) radicals in dye decomposition. The removal efficiency of COD and the BOD₅/COD ratio improved with increasing catalytic time, reaching 87.93 % and 0.84, respectively, at 120 min. The LC₅₀ value of untreated and treated RB5 solutions was examined using Daphnia magna, and findings showed an increase in the LC₅₀ value of the treated solution.

{"title":"Application of response surface methodology in optimizing MOF5@Fe3O4 catalyst for activating peroxymonosulfate in the degradation of reactive black 5 dye","authors":"Nezamaddin Mengelizadeh , Najmeh Ahmadi , Davoud Balarak","doi":"10.1016/j.wri.2025.100278","DOIUrl":"10.1016/j.wri.2025.100278","url":null,"abstract":"<div><div>Magnetic nanoparticles (Fe<sub>3</sub>O<sub>4</sub>) were loaded onto metal-organic framework (MOF-5) as an activator for peroxymonosulfate (PMS) in the decomposition of the dye reactive black 5 (RB5). Modeling and optimization of operational parameters were performed using response surface methodology coupled with central composite design (RSM-CCD). The maximum removal efficiency of RB5 was predicted under laboratory conditions, including pH of 11, catalyst dosage of 1 g/L, RB5 concentration of 10 mg/L, temperature of 50 °C, and reaction time of 60 min. High values of confidence coefficient (R<sup>2</sup>) and F-value indicated that the present model could explain most of the data and could also be used to predict efficiency within a design space. Also, the adsorption capacity was equal to 99.2 mg/g. The efficiency of the MOF-5@Fe<sub>3</sub>O<sub>4</sub>/PMS system in removing RB5 was higher than that of standalone systems such as adsorption and PMS. Stability tests revealed that the synthesized catalyst could be reused for six consecutive reaction cycles with a negligible decline in dye removal efficiency (<4.3 %) and total organic carbon (TOC) removal (<5.50 %). Trapping experiments using ethanol and tert-butyl alcohol scavengers confirmed the presence of sulfate (SO<sub>4</sub><sup>•-</sup>) and hydroxyl (<sup>•</sup>OH) radicals in dye decomposition. The removal efficiency of COD and the BOD<sub>5</sub>/COD ratio improved with increasing catalytic time, reaching 87.93 % and 0.84, respectively, at 120 min. The LC<sub>50</sub> value of untreated and treated RB5 solutions was examined using <em>Daphnia magna</em>, and findings showed an increase in the LC<sub>50</sub> value of the treated solution.</div></div>","PeriodicalId":23714,"journal":{"name":"Water Resources and Industry","volume":"33 ","pages":"Article 100278"},"PeriodicalIF":4.5,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143161299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Experimental and computational investigation of cold atmospheric plasma/visible-light/N-TiO2 in treatment of synthetic and real wastewaters

IF 4.5 3区工程技术 Q1 WATER RESOURCES

Water Resources and Industry

Pub Date : 2024-12-24 DOI: 10.1016/j.wri.2024.100276

Mohsen Sheydaei, Parisa Moharramkhani, Baharak Ayoubi-Feiz, Farhad Khodabandeloo

Cold atmospheric plasma and visible-light photocatalysis (CAPVP) is considered as an effective advanced oxidation process. Experimental and computational investigation of CAPVP application for treatment of synthetic and industrial wastewaters was conducted for the first time in this work. N-TiO₂ as a visible-light photocatalyst was synthesized and characterized. The CAPVP reactor was developed and its performance in synthetic (cefixime) and real wastewater (Eshtehard Industrial Zone, Iran) was investigated. The effect of catalyst dosage, discharge voltage, inlet gas, visible-light power, and electrode distance from water surface was investigated on the cefixime degradation efficiency. The combined CAPVP with catalyst dosage = 1 g L⁻¹, air flow rate = 5 L min^-1 under visible-light power of 36 W with discharge voltage = 35 kV and the electrode-water surface distance of 5 mm caused about 95 % cefixime degradation after 20 min. A three-layered feed forward back propagation artificial neural network was developed for analysis of different variables influence on the CAPVP process. Findings showed that the catalyst dosage and discharge voltage had the highest effect on the degradation among the investigated variables. Also, the comparative experiments showed that the efficiency of the CAPVP was higher than that of one stage photocatalysis and plasma processes and showed a synergistic coefficient of 3.06. Furthermore, the CAPVP was used to treat the effluent of the real industrial wastewater and the effect of the catalyst dosage and discharge voltage was investigated on treatment efficiency. The results indicated that the combined process for 240 min reduced the COD of the effluent of Eshtehard Industrial Zone up to 95 %.

{"title":"Experimental and computational investigation of cold atmospheric plasma/visible-light/N-TiO2 in treatment of synthetic and real wastewaters","authors":"Mohsen Sheydaei, Parisa Moharramkhani, Baharak Ayoubi-Feiz, Farhad Khodabandeloo","doi":"10.1016/j.wri.2024.100276","DOIUrl":"10.1016/j.wri.2024.100276","url":null,"abstract":"<div><div>Cold atmospheric plasma and visible-light photocatalysis (CAPVP) is considered as an effective advanced oxidation process. Experimental and computational investigation of CAPVP application for treatment of synthetic and industrial wastewaters was conducted for the first time in this work. N-TiO<sub>2</sub> as a visible-light photocatalyst was synthesized and characterized. The CAPVP reactor was developed and its performance in synthetic (cefixime) and real wastewater (Eshtehard Industrial Zone, Iran) was investigated. The effect of catalyst dosage, discharge voltage, inlet gas, visible-light power, and electrode distance from water surface was investigated on the cefixime degradation efficiency. The combined CAPVP with catalyst dosage = 1 g L<sup>−1</sup>, air flow rate = 5 L min<sup>-1</sup> under visible-light power of 36 W with discharge voltage = 35 kV and the electrode-water surface distance of 5 mm caused about 95 % cefixime degradation after 20 min. A three-layered feed forward back propagation artificial neural network was developed for analysis of different variables influence on the CAPVP process. Findings showed that the catalyst dosage and discharge voltage had the highest effect on the degradation among the investigated variables. Also, the comparative experiments showed that the efficiency of the CAPVP was higher than that of one stage photocatalysis and plasma processes and showed a synergistic coefficient of 3.06. Furthermore, the CAPVP was used to treat the effluent of the real industrial wastewater and the effect of the catalyst dosage and discharge voltage was investigated on treatment efficiency. The results indicated that the combined process for 240 min reduced the COD of the effluent of Eshtehard Industrial Zone up to 95 %.</div></div>","PeriodicalId":23714,"journal":{"name":"Water Resources and Industry","volume":"33 ","pages":"Article 100276"},"PeriodicalIF":4.5,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143160872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

The hydrological hazard in artificially-drained mining and post-mining areas–A significant environmental aspect requiring systemic management

IF 4.5 3区工程技术 Q1 WATER RESOURCES

Water Resources and Industry

Pub Date : 2024-12-17 DOI: 10.1016/j.wri.2024.100275

Dariusz Ignacy

This paper describes a case study of a highly urbanized artificially-drained mine subsidence area massively impacted by mining. Within this area, the surface has subsided over 40 m and the area threatened by flooding is 18 times larger than the observable inundation today. This surface relief disturbance and hydrological hazard is shown using the author's innovative concepts in the form of relative elevation models and four hydrological hazard frameworks. This paper contains analyses supporting the main thesis that in highly transformed and artificially-drained mining and post-mining areas, the hydrological hazard should be classified as a significant environmental aspect requiring systemic management. It outlines in detail the above premise by describing the inter-related mining and non-mining processes causing changes to the hydrological hazard leading to the subsequent complexity of mitigation measures. The introduction of relative elevation models and newly-defined hydrological hazard frameworks are projected onto a site-specific hydromorphologic map. This map forms the hydrological basis for identifying and dimensioning existing flood-related geohazards. The innovative contribution is the ability to incorporate time-related data to assess past and future hydrological hazards. This knowledge makes it possible to simplify flood-related geohazard mitigation. Additionally, it affords policy-makers a range of options regarding future spatial planning to optimize land-use according to societal will. To date, environmental management systems do not sufficiently take into account the mining-induced hydrological hazard in mine subsidence areas. The main goal of this paper is to show that the existing gap in management capability of the hydrological hazard and flood-related geohazards and risks can be resolved by the author's novel site-specific decision support tools.

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引用次数: 0

Si-N doped eucalyptus biochar supported TiO2-ZnO (Si-N@EBC/3TiZn) as novel solar light responsive photocatalyst for enhanced degradation of cationic dye in aqueous solution

IF 4.5 3区工程技术 Q1 WATER RESOURCES

Water Resources and Industry

Pub Date : 2024-12-16 DOI: 10.1016/j.wri.2024.100274

Adeyinka S. Yusuff , Lukman S. Mustapha , Khairia M. Al-Ahmary , Elham A. Alzahrani , Jamelah S. Al-Otaibi , Mazen R. Alrahili

A novel Si-N@EBC/3TiZn composite was developed, analyzed and utilized as a photocatalyst for methylene blue (MB) degradation. The Si-N@EBC/3TiZn at various compositions of Si-N@EBC was investigated and exhibited excellent photoactivity for degradation reaction when the Si-N@EBC composition in the photocatalyst was 30%. Textural analysis showed that 30%Si–N@EBC/3TiZn was a mesoporous material with 80.3 m²/g specific surface area and 19.3 nm pore diameter, while optical analysis showed a remarkable reduction in the band gap of the sample, making it a solar light responsive photocatalyst. The percent MB removal from the photodegradation process was 98.61

\pm

0.21% at optimal initial MB concentration of 24.7 mg/L, pH of 9.84, 30%Si–N@EBC/3TiZn dosage of 1.16 g/L and irradiation period of 51.7 min. The pseudo-first-order L-H model provided a good fit to the MB photocatalytic degradation data with high

R^{2}

values. 30%Si–N@EBC/3TiZn was recycled eight times, with 90.78% degradation occurring at the 8th run.

{"title":"Si-N doped eucalyptus biochar supported TiO2-ZnO (Si-N@EBC/3TiZn) as novel solar light responsive photocatalyst for enhanced degradation of cationic dye in aqueous solution","authors":"Adeyinka S. Yusuff , Lukman S. Mustapha , Khairia M. Al-Ahmary , Elham A. Alzahrani , Jamelah S. Al-Otaibi , Mazen R. Alrahili","doi":"10.1016/j.wri.2024.100274","DOIUrl":"10.1016/j.wri.2024.100274","url":null,"abstract":"<div><div>A novel Si-N@EBC/3TiZn composite was developed, analyzed and utilized as a photocatalyst for methylene blue (MB) degradation. The Si-N@EBC/3TiZn at various compositions of Si-N@EBC was investigated and exhibited excellent photoactivity for degradation reaction when the Si-N@EBC composition in the photocatalyst was 30%. Textural analysis showed that 30%Si–N@EBC/3TiZn was a mesoporous material with 80.3 m<sup>2</sup>/g specific surface area and 19.3 nm pore diameter, while optical analysis showed a remarkable reduction in the band gap of the sample, making it a solar light responsive photocatalyst. The percent MB removal from the photodegradation process was 98.61 <span><math><mrow><mo>±</mo></mrow></math></span> 0.21% at optimal initial MB concentration of 24.7 mg/L, pH of 9.84, 30%Si–N@EBC/3TiZn dosage of 1.16 g/L and irradiation period of 51.7 min. The pseudo-first-order L-H model provided a good fit to the MB photocatalytic degradation data with high <span><math><mrow><msup><mi>R</mi><mn>2</mn></msup></mrow></math></span> values. 30%Si–N@EBC/3TiZn was recycled eight times, with 90.78% degradation occurring at the 8th run.</div></div>","PeriodicalId":23714,"journal":{"name":"Water Resources and Industry","volume":"33 ","pages":"Article 100274"},"PeriodicalIF":4.5,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143160689","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Numerical simulations of solid suspensions in a gravity thickener

IF 4.5 3区工程技术 Q1 WATER RESOURCES

Water Resources and Industry

Pub Date : 2024-12-12 DOI: 10.1016/j.wri.2024.100273

Mahmoud Alzoubi , Antoine Monot , David Rancourt , Sébastien Poncet

Reducing the overall water and energy consumptions in deep mines is a necessity in moving toward a more sustainable mining industry. Underground water treatment is a key requirement to achieve this goal. This study numerically investigates the dynamics of a continuous decantation process as a technique to recycle and reuse wastewater in deep mines without pumping it to the surface. A three-dimensional mathematical model that considers the conservation of mass and momentum has been derived, validated, and implemented to simulate the turbulent two-phase flow inside a decantation tank. The validation is achieved by comparing the numerical simulations to experimental data from the literature for two reference cases: (i) turbulent slurry flows (water and glass particles) in a horizontal pipe; (ii) turbulent swirling flow of limestone ore - water in a hydrocyclone. The framework of the validated model has been extended to examine the effect of various design parameters on the efficiency of a full-scale conical-shaped decantation tank (diameter of 1 [m] and total height of 0.97 [m]). The inlet values of flowrate and particle volume concentration are fixed to 50 [GPM] and 4.5 [%], respectively. The diameter and density of the solid particles are equal to 150 [μm] and 1.15, respectively. The results compare the efficiency of 20 different designs of the decantation tank (with/without inner cylinder, scrapers, feedwell, …) in terms of the overflow water quality. The results indicate that the efficiency of the decantation tank increases with inner surface area at fixed volume. Also the plain decanter with scrapers exhibits the highest efficiency, whereas the design with the center extract performs the worst.

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引用次数: 0

Groundwater potential in mining regions for drinking water supply: A case study of the Żelatowa intake (Chrzanów, Poland) 矿区地下水用于饮用水供应的潜力：Żelatowa取水口（波兰Chrzanów）案例研究

IF 4.5 3区工程技术 Q1 WATER RESOURCES

Water Resources and Industry

Pub Date : 2024-11-20 DOI: 10.1016/j.wri.2024.100272

Katarzyna Wawrzonek , Katarzyna Wątor , Mateusz Topolewski , Agata Kasprzak , Ewa Kmiecik

Sustainable development of groundwater resources in regions affected by mining activity requires a comprehensive view of the problem from both a hydrogeological and hydrogeochemical perspective. As groundwater serves as a main source of drinking water in many regions of the world, it is necessary to recognise the potential of mine waters and their real influence on its quality. This study analyses the long-term dynamics of changes in drinking water quality from deep wells S1, S2, and S3 comprising the Żelatowa intake (Chrzanów, Poland), which is located in an area of intensive mining activity. Analysis of the data showed that mining operations are affecting water quality, as observed by upward trends for electrical conductivity, total hardness, and concentrations of certain ions between 2016 and 2021, and downward trends from 2022 onwards. The greatest adverse changes in water quality were observed in well S2 (Fe²⁺, Mn²⁺, SO₄²⁻ concentrations and total hardness do not meet the requirements of Directive 2020/2184), the water requiring mixing with water from other wells to ensure that it is of suitable quality for drinking purposes. The PHREEQC software was successfully used to predict the chemical composition of the final mixture, which meets the requirements of appropriate regulations. The water from the Żelatowa intake can have an adverse effect on the water supply system, which has been proven by several scaling and corrosion indices. Continuous monitoring of the physicochemical parameters of these waters is essential to ensure the safety of the drinking water supply for the surrounding population.

要实现受采矿活动影响地区地下水资源的可持续发展，就必须从水文地质和水文地质化学的角度全面看待这一问题。由于地下水是世界许多地区的主要饮用水源，因此有必要认识到矿井水的潜力及其对水质的实际影响。本研究分析了Żelatowa 取水口（波兰 Chrzanów）深井 S1、S2 和 S3 饮用水水质的长期动态变化，该取水口位于采矿活动密集的地区。数据分析显示，采矿作业正在影响水质，2016 年至 2021 年期间，电导率、总硬度和某些离子的浓度呈上升趋势，2022 年以后呈下降趋势。S2 井的水质变化最大（Fe2+、Mn2+、SO42- 浓度和总硬度不符合 2020/2184 号指令的要求），需要与其他水井的水混合，以确保水质适合饮用。PHREEQC 软件成功地预测了最终混合物的化学成分，符合相关法规的要求。泽拉托瓦（Żelatowa）取水口的水可能会对供水系统产生不利影响，这一点已被多个结垢和腐蚀指数所证实。对这些水的理化参数进行持续监测对于确保周围居民的饮用水供应安全至关重要。

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引用次数: 0