Water Science & Technology最新文献_第9页

Ascorbic acid enhanced the circulation between Fe(II) and Fe(III) in peroxymonosulfate system for fluoranthene degradation 抗坏血酸增强了过一硫酸盐体系中铁(II)和铁(III)之间的循环以降解荧蒽

Water Science & Technology Pub Date : 2024-03-26 DOI: 10.2166/wst.2024.098

Longbin Zhang, Jianxiong Gao, Yulong Liu, Zhengyuan Zhou, Xianxian Sheng, Dexiao Li, Yuantian Chen, Shuguang Lyu

{"title":"Ascorbic acid enhanced the circulation between Fe(II) and Fe(III) in peroxymonosulfate system for fluoranthene degradation","authors":"Longbin Zhang, Jianxiong Gao, Yulong Liu, Zhengyuan Zhou, Xianxian Sheng, Dexiao Li, Yuantian Chen, Shuguang Lyu","doi":"10.2166/wst.2024.098","DOIUrl":"https://doi.org/10.2166/wst.2024.098","url":null,"abstract":"\u0000 \u0000 In this research, ascorbic acid (AA) was used to enhance Fe(II)/Fe(III)-activated permonosulfate (PMS) systems for the degradation of fluoranthene (FLT). AA enhanced the production of ROS in both PMS/Fe(II) and PMS/Fe(III) systems through chelation and reduction and thus improved the degradation performance of FLT. The results of the effect of chemical dosages on FLT removal showed that the optimal molar ratio in PMS/Fe(II)/AA/FLT and PMS/Fe(III)/AA/FLT processes were 2/2/4/1 and 5/10/5/1, respectively. In addition, the experimental results on the effect of FLT degradation under different groundwater matrixes indicated that PMS/Fe(III)/AA system was more adaptable to different water quality conditions than PMS/Fe(II)/AA system. SO4•− was the major reactive oxygen species (ROS) responsible for FLT removal through the probe and scavenging tests in both systems. Furthermore, the degradation intermediates of FLT were analyzed using gas chromatograph–mass spectrometry (GC–MS), and the probable degradation pathways of FLT degradation were proposed. In addition, the removal of FLT was also tested in actual groundwater and the results showed that by increasing the dose and pre-adjusting the solution pH, 88.8 and 100% of the FLT were removed for PMS/Fe(II)/AA and PMS/Fe(III)/AA systems.","PeriodicalId":298320,"journal":{"name":"Water Science & Technology","volume":"118 51","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140381072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimizing neural network algorithms for submerged membrane bioreactor: A comparative study of OVAT and RSM hyperparameter optimization techniques 优化浸没式膜生物反应器的神经网络算法：OVAT 和 RSM 超参数优化技术的比较研究

Water Science & Technology Pub Date : 2024-03-26 DOI: 10.2166/wst.2024.099

Syahira Ibrahim, Norhaliza Abdul Wahab

{"title":"Optimizing neural network algorithms for submerged membrane bioreactor: A comparative study of OVAT and RSM hyperparameter optimization techniques","authors":"Syahira Ibrahim, Norhaliza Abdul Wahab","doi":"10.2166/wst.2024.099","DOIUrl":"https://doi.org/10.2166/wst.2024.099","url":null,"abstract":"\u0000 Hyperparameter tuning is an important process to maximize the performance of any neural network model. This present study proposed the factorial design of experiment for screening and response surface methodology to optimize the hyperparameter of two artificial neural network algorithms. Feed-forward neural network (FFNN) and radial basis function neural network (RBFNN) are applied to predict the permeate flux of palm oil mill effluent. Permeate pump and transmembrane pressure of the submerge membrane bioreactor system are the input variables. Six hyperparameters of the FFNN model including four numerical factors (neuron numbers, learning rate, momentum, and epoch numbers) and two categorical factors (training and activation function) are used in hyperparameter optimization. RBFNN includes two numerical factors such as a number of neurons and spreads. The conventional method (one-variable-at-a-time) is compared in terms of optimization processing time and the accuracy of the model. The result indicates that the optimal hyperparameters obtained by the proposed approach produce good accuracy with a smaller generalization error. The simulation results show an improvement of more than 65% of training performance, with less repetition and processing time. This proposed methodology can be utilized for any type of neural network application to find the optimum levels of different parameters.","PeriodicalId":298320,"journal":{"name":"Water Science & Technology","volume":"10 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140378705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modification of bentonite with black cotton soil and carboxyl methyl cellulose for the enhancement of hydraulic performance of geosynthetic clay liners 用黑棉土和羧甲基纤维素改性膨润土以提高土工合成粘土衬里的水力性能

Water Science & Technology Pub Date : 2024-03-25 DOI: 10.2166/wst.2024.093

S. Syed Masoodhu, N. Natarajan, M. Vasudevan

{"title":"Modification of bentonite with black cotton soil and carboxyl methyl cellulose for the enhancement of hydraulic performance of geosynthetic clay liners","authors":"S. Syed Masoodhu, N. Natarajan, M. Vasudevan","doi":"10.2166/wst.2024.093","DOIUrl":"https://doi.org/10.2166/wst.2024.093","url":null,"abstract":"\u0000 \u0000 Geosynthetic clay liners (GCLs) are mostly used as flow barriers in landfills and waste containments due to their low hydraulic conductivity to prevent the leachate from reaching the environment. The self-healing and swell-shrink properties of soft clays (expansive soils) such as bentonite enable them as promising materials for the GCL core layers. However, it is important to modify their physico-chemical properties in order to overcome the functional limitations of GCL under different hydraulic conditions. In the present study, locally available black cotton soil (BCS) is introduced in the presence of an anionic polymer named carboxymethyl cellulose (CMC) as an alternative to bentonite to enhance the hydraulic properties of GCL under different compositions. The modified GCL is prepared by stitching the liner with an optimum percentage of CMC along with various percentages of BCS mixed with bentonite. Hydraulic conductivity tests were performed on the modified GCL using the flexi-wall permeameter. The results suggest that the lowest hydraulic conductivity of 4.58 × 10−10 m/s is obtained when 25% of BCS is blended with bentonite and an optimum 8% CMC and further addition of BCS results in the reduction of the hydraulic conductivity.","PeriodicalId":298320,"journal":{"name":"Water Science & Technology","volume":" 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140384082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Particle separator with vortex claw: an efficient and new technology 带涡流爪的颗粒分离器：一种高效的新技术

Water Science & Technology Pub Date : 2024-03-06 DOI: 10.2166/wst.2024.072

Cheng He, Padala Chittibabu, David Nguyen, Quintin J. Rochfort

{"title":"Particle separator with vortex claw: an efficient and new technology","authors":"Cheng He, Padala Chittibabu, David Nguyen, Quintin J. Rochfort","doi":"10.2166/wst.2024.072","DOIUrl":"https://doi.org/10.2166/wst.2024.072","url":null,"abstract":"\u0000 \u0000 Despite facing many challenges, the exploration of using natural forces and mechanisms besides gravity to enhance particle settling has never ceased. A novel particle separator design, which utilizes multiple vortexes to enhance particle settling, was proposed in this study. The basic principle is using the fluid's energy to generate small swirling currents in a specially designed vortex claw generator. These currents bring suspended particles from the rapid and turbulent inflow to relatively quiet water regions, separating them from the main flows and reducing their travel distance to the wall. To verify the new separator design's performance, comparison studies were carried out in the laboratory using physical models. The results showed that the new design had much higher particle capture rates for the same inflow rates and tested particle sizes. Most importantly, it was able to effectively remove small particles, and particle capture rates were much less affected by fluctuations in inflow rates. Since most existing particle separators failed to perform well under large inflow rates, these characteristics make the new design stand out from other separators. Due to its special structure, its treatment capacity can also be easily increased without changing its horizontal separator size.","PeriodicalId":298320,"journal":{"name":"Water Science & Technology","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140078008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impact of climate change on the water resources of the Atbara River using novel hydrological models 利用新型水文模型分析气候变化对阿特巴拉河水资源的影响

Water Science & Technology Pub Date : 2024-03-05 DOI: 10.2166/wst.2024.070

Mohamed El-Sayed El-Mahdy, Mohamed Abdel-Monsef, Salwa Abo-Elella, Mohamed Shahba

{"title":"Impact of climate change on the water resources of the Atbara River using novel hydrological models","authors":"Mohamed El-Sayed El-Mahdy, Mohamed Abdel-Monsef, Salwa Abo-Elella, Mohamed Shahba","doi":"10.2166/wst.2024.070","DOIUrl":"https://doi.org/10.2166/wst.2024.070","url":null,"abstract":"\u0000 \u0000 Rivers respond directly to climate change, as well as incorporating the effects of climate-driven changes occurring within their watersheds. In this research, climate change's impact on the Atbara River, one of the main tributaries of the Nile River, was studied. Various statistical methods of analysis were applied to study the basic characteristics of the climatic parameters that affect the discharge of the Atbara River. The three hydrological gauging stations on the Atbara River, namely, the Upper Atbara and Setit reservoirs, Khashm el-Girba reservoir, and Atbara Kilo 3 station, were included in the study. The correlation between the meteorological parameters and the hydrology of the Atbara River and the prediction of the future hydrology of the Atbara River Basin was determined. Many hydrological models were developed and tested to predict the hydrology of the river. Finally, forecasting for river hydrology was built. No significant trend was found in the precipitation in the study area. The developed model simulates the observed data with a high coefficient of determination ranging from 0.7 to 0.91 for the three hydrological gauging stations studied. Results predicted a slight decrease in river discharge in future year.","PeriodicalId":298320,"journal":{"name":"Water Science & Technology","volume":"127 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140078663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of floating treatment wetland coverage ratio and operating parameters on nitrogen removal: toward design optimization 浮动处理湿地覆盖率和运行参数对脱氮的影响：优化设计

Water Science & Technology Pub Date : 2024-03-01 DOI: 10.2166/wst.2024.064

R. Abi Hanna, K. Borne, Y. Andrès, C. Gerente

{"title":"Effect of floating treatment wetland coverage ratio and operating parameters on nitrogen removal: toward design optimization","authors":"R. Abi Hanna, K. Borne, Y. Andrès, C. Gerente","doi":"10.2166/wst.2024.064","DOIUrl":"https://doi.org/10.2166/wst.2024.064","url":null,"abstract":"\u0000 Floating treatment wetlands (FTWs) have the potential to improve the quality of wastewater discharges, yet design basics are unavailable to size these systems. This study investigates the effect of FTWs' coverage ratio and hydraulic retention time on agri-food wastewater treatment. This was studied in a pilot-scale experiment comprising four lagoons (6.5 m3 each) fed with real effluent from an existing tertiary treatment lagoon. An evaluation of FTW of different sizes (L24, L48, and L72 representing 24, 48, and 72% of pilot lagoons surface areas) and a control, L0 (without FTW), was performed over 16 months. Overall, L72 and L48 moderately improved total nitrogen (TN) mass removal compared to L0 (p < 0.05), while L24 exhibited similar TN mass removal (p = 0.196). The highest improvement was observed for L72, exhibiting up to 55% (mean of 13%) greater N mass removal than the control. The net increase in TN removal by FTWs was mainly related to denitrification promoted by decreasing dissolved oxygen to increase the FTW coverage ratio. Residence time, temperature, and dissolved oxygen were the main parameters driving TN removal by FTWs. Retrofitting existing lagoons with FTW can facilitate N retrieval through plant harvesting, thereby reducing N remobilization from sediment (common in conventional lagoons).","PeriodicalId":298320,"journal":{"name":"Water Science & Technology","volume":"116 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140089769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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 CuFeLDH–NCNT in ultrasound-assisted-Fenton-like process for removing ciprofloxacin from aqueous solutions 将 CuFeLDH-NCNT 应用于超声辅助类芬顿工艺以去除水溶液中的环丙沙星

Water Science & Technology Pub Date : 2024-03-01 DOI: 10.2166/wst.2024.066

Xiaoning Jia, Tong Wu, Xia Zhao, Jing Huang, Haixin He, Chunxiang Wang

{"title":"Application of CuFeLDH–NCNT in ultrasound-assisted-Fenton-like process for removing ciprofloxacin from aqueous solutions","authors":"Xiaoning Jia, Tong Wu, Xia Zhao, Jing Huang, Haixin He, Chunxiang Wang","doi":"10.2166/wst.2024.066","DOIUrl":"https://doi.org/10.2166/wst.2024.066","url":null,"abstract":"\u0000 In this study, the mesoporous material NCNT was prepared by treating carbon nanotubes (CNTs) with hydrazine and subsequently loaded with Cu–Fe-layered double hydroxide (CuFeLDH) to create a multiphase catalyst (CuFeLDH–NCNT). Its application as a multiphase catalyst was investigated in an ultrasound-assisted Fenton process for ciprofloxacin (CIP) degradation in aqueous solutions. In addition, the impacts of catalyst dosage, ultrasonic power, H2O2 dosage, and beginning pH on CIP removal efficiency were carefully evaluated to maximize the removal efficiency of CIP. The findings indicated that the elimination rate of the initial CIP concentration of 20 mg/L surpassed 94.66% after a mere 100 min, while the TOC degradation rate was 70.4%. The high breakdown rate was due to the synergistic action between the nanoparticles, H2O2, and ultrasonography. The degradation intermediates of CIP were examined, and putative degradation pathways and mechanisms were postulated. NCNT can effectively load and disseminate CuFeLDH while also providing reaction regions and catalytic active sites, accelerating the redox cycle of Fe2+/Fe3+, Cu+/Cu2+, and ensuring the proper operation of Fenton-like reactions. Furthermore, ultrasonography can expedite the transition of H2O2 to •OH, enhancing the reaction rate. The degradation intermediates of CIP were examined, and putative degradation pathways and mechanisms were postulated.","PeriodicalId":298320,"journal":{"name":"Water Science & Technology","volume":" February","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140092717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tetracycline removal using NaIO4 activated by MnSO4: design and optimization via response surface methodology 利用 MnSO4 活化 NaIO4 去除四环素：通过响应面方法进行设计和优化

Water Science & Technology Pub Date : 2024-02-14 DOI: 10.2166/wst.2024.047

Jingyi Yang, Yanjiao Gao, Tiehong Song, Jian Ye, Lihong Zhao, Rui Su

{"title":"Tetracycline removal using NaIO4 activated by MnSO4: design and optimization via response surface methodology","authors":"Jingyi Yang, Yanjiao Gao, Tiehong Song, Jian Ye, Lihong Zhao, Rui Su","doi":"10.2166/wst.2024.047","DOIUrl":"https://doi.org/10.2166/wst.2024.047","url":null,"abstract":"\u0000 \u0000 The appearance of recalcitrant organic pollutants such as antibiotics in water bodies has gained a lot of attention owing to their adverse effects on organisms and humans. The current study aims to develop a novel approach to eliminate antibiotic tetracycline (TC) from a synthetic aqueous solution based on the advanced oxidation process triggered by MnSO4-catalyzed NaIO4. Single-factor experiment was performed to observe the impact of pH, NaIO4 concentration, and MnSO4 dosage on TC decomposition, and a three-factor, three-level response surface experiment with TC removal rate as the dependent variable was designed based on the range of factors determined from the single-factor experiment. The single-factor experiment revealed that the ranges of pH, NaIO4 concentration, and MnSO4 dosage need to be further optimized. ANOVA (analysis of variance) results showed that the data from the response surface experiment were consistent with the quadratic model with high R2 (0.9909), and the predicted values were very close to the actual values. After optimization by response surface methodology, the optimal condition obtained was pH = 6.7, [NaIO4] = 0.39 mM, and [MnSO4] = 0.12 mM, corresponding to a TC removal of 96.56%. This optimization condition was fully considered to save the dosage of the high-priced chemical NaIO4.","PeriodicalId":298320,"journal":{"name":"Water Science & Technology","volume":"91 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139836507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tetracycline removal using NaIO4 activated by MnSO4: design and optimization via response surface methodology 利用 MnSO4 活化 NaIO4 去除四环素：通过响应面方法进行设计和优化

Water Science & Technology Pub Date : 2024-02-14 DOI: 10.2166/wst.2024.047

Jingyi Yang, Yanjiao Gao, Tiehong Song, Jian Ye, Lihong Zhao, Rui Su

{"title":"Tetracycline removal using NaIO4 activated by MnSO4: design and optimization via response surface methodology","authors":"Jingyi Yang, Yanjiao Gao, Tiehong Song, Jian Ye, Lihong Zhao, Rui Su","doi":"10.2166/wst.2024.047","DOIUrl":"https://doi.org/10.2166/wst.2024.047","url":null,"abstract":"\u0000 \u0000 The appearance of recalcitrant organic pollutants such as antibiotics in water bodies has gained a lot of attention owing to their adverse effects on organisms and humans. The current study aims to develop a novel approach to eliminate antibiotic tetracycline (TC) from a synthetic aqueous solution based on the advanced oxidation process triggered by MnSO4-catalyzed NaIO4. Single-factor experiment was performed to observe the impact of pH, NaIO4 concentration, and MnSO4 dosage on TC decomposition, and a three-factor, three-level response surface experiment with TC removal rate as the dependent variable was designed based on the range of factors determined from the single-factor experiment. The single-factor experiment revealed that the ranges of pH, NaIO4 concentration, and MnSO4 dosage need to be further optimized. ANOVA (analysis of variance) results showed that the data from the response surface experiment were consistent with the quadratic model with high R2 (0.9909), and the predicted values were very close to the actual values. After optimization by response surface methodology, the optimal condition obtained was pH = 6.7, [NaIO4] = 0.39 mM, and [MnSO4] = 0.12 mM, corresponding to a TC removal of 96.56%. This optimization condition was fully considered to save the dosage of the high-priced chemical NaIO4.","PeriodicalId":298320,"journal":{"name":"Water Science & Technology","volume":"28 20","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139777042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Iron-based autotrophic denitrification driven by sponge iron for nitrite removal in an anaerobic bioreactor: effect of iron and carbon source 厌氧生物反应器中由海绵铁驱动的铁基自养反硝化作用去除亚硝酸盐：铁和碳源的影响

Water Science & Technology Pub Date : 2024-02-10 DOI: 10.2166/wst.2024.041

Shuang Ren, Peng Wang, Wenxuan Li, Hongjuan Zhu, Kaiyao Hu, Hao Mu, Xiaoyi Gao

{"title":"Iron-based autotrophic denitrification driven by sponge iron for nitrite removal in an anaerobic bioreactor: effect of iron and carbon source","authors":"Shuang Ren, Peng Wang, Wenxuan Li, Hongjuan Zhu, Kaiyao Hu, Hao Mu, Xiaoyi Gao","doi":"10.2166/wst.2024.041","DOIUrl":"https://doi.org/10.2166/wst.2024.041","url":null,"abstract":"\u0000 \u0000 The study investigated the denitrification effect of the iron autotrophic denitrification process for removing nitrite under anaerobic conditions, utilizing sponge iron as the electron donor. When the C/N ratio equaled 1, defined as the ratio of chemical oxygen demand to total nitrogen (TN), and the influent nitrite nitrogen (NO2−-N) was at 80 mg/L, the average steady-state TN effluent concentration of this system was 41.94 mg/L during the 79-day experiment. The TN value exhibited a significant decrease compared to both the sponge iron system (68.69 mg/L) and the carbon source system (56.50 mg/L). Sponge iron is beneficial for providing an electron donor and ensuring an anaerobic system, fostering an environment that promotes microorganism growth while effectively inhibiting the conversion of nitrite to nitrate. In addition, carbon sources play a vital role in ensuring microorganism growth and reproduction, thereby aiding in TN removal. The optimal parameters based on the effectiveness of TN removal in the iron autotrophic denitrification system were determined to be s-Fe0 dosage of 30 g/L and C/N = 1.5. These results suggest that the iron autotrophic denitrification process, driven by sponge iron, can effectively remove nitrite under anaerobic conditions.","PeriodicalId":298320,"journal":{"name":"Water Science & Technology","volume":" 833","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139787011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Water Science &amp; Technology最新文献

Water Science & Technology最新文献