Article
Engineering, Environmental
J. A. Hurtado, L. F. Valdez, C. J. Escudero
Summary: This study demonstrates the effectiveness of a treatment process for municipal slaughterhouse wastewater, where a sequence of stages including sedimentation, coagulation-flocculation, Fenton process, and solar concentrator in the photo-Fenton process were applied to achieve high removal rates of COD and improvement in effluent quality.
WATER SCIENCE AND TECHNOLOGY
(2021)
Article
Environmental Sciences
Anjali Bhagwat, Rajat Kumar, Chandra Shekhar Prasad Ojha, Mukesh Kumar Sharma, Apourv Pant, Babita Sharma, Jai Vir Tyagi
Summary: The leachates from landfills pose a potential contamination risk to surface and groundwater. As the landfill ages, the leachate's pH changes, affecting treatment methods. Ferric chloride is found to be the most efficient coagulant, surpassing Fenton. Switching to ferric chloride or Fenton treatment can significantly reduce operational costs compared to the current method used.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Joao P. F. Venancio, Sara Ribeirinho-Soares, Luisa C. Lopes, Luis M. Madeira, Olga C. Nunes, Carmen S. D. Rodrigues
Summary: In this study, a combination of coagulation/flocculation and Fenton processes was used for tertiary treatment of urban wastewater. The results showed that the best removals of turbidity and enterobacteria were achieved with a coagulant dosage of 120 mg/L and the natural pH of the effluent. The treated water met the strictest limit for E. coli, but had a high relative abundance of potentially hazardous bacteria, emphasizing the need for microbiological characterization before reuse.
ENVIRONMENTAL RESEARCH
(2023)
Article
Engineering, Environmental
Jinkai Xue, Sigrid Peldszus, Michele I. Van Dyke, Peter M. Huck
Summary: Microplastics are a complex issue in water systems due to their diverse physical and chemical characteristics. This study investigated the removal of carboxylated polystyrene microspheres in real surface waters, finding that higher alum doses generally led to better removal of smaller microspheres, but no substantial improvement in removal of particles between 3 and 25 μm. Smaller PS microspheres were more effectively removed in both river and lake water sources, with the water source significantly affecting the removal efficiency.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Rizwan Khan, Muhammad Ali Inam, Kang-Hoon Lee, Abdul Sami Channa, Mukhtiar Ali Mallah, Young-Min Wie, Mahmood Nabi Abbasi
Summary: The combined use of PAFC and PAM was more effective in removing nano-CuO and turbidity from water compared to using either one individually. Removal efficiency was higher in solutions with higher mass concentrations of nano-CuO, with optimal removal achieved at pH levels between 7-11. The removal mechanism of nano-CuO may involve a combination of neutralization, complexation, and adsorption.
Article
Engineering, Environmental
Cristina Agabo-Garcia, Guillermo Repetto, Mha Albqmi, Gassan Hodaifa
Summary: Different eco-friendly processes were studied to treat olive mill wastewater for the European 2024 zero-waste plan. The application of advanced oxidation processes, flocculation, and filtration proved to be effective in obtaining high-quality regenerated water. However, the increase in total iron content resulted in toxicity, which was resolved through subsequent flocculation and filtration steps. The optimized process achieved regenerated water suitable for irrigation with improved quality parameters.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Chemical
Muhammad Ali Inam, Rizwan Khan, Ick Tae Yeom, Abdul Salam Buller, Muhammad Akram, Muhammad Waleed Inam
Summary: The study utilized Box-Behnken statistical experiment design and response surface methodology to determine the optimal operating conditions for efficient removal of antimony (Sb) species from water using ferric chloride. The results showed that high doses of ferric chloride were effective in achieving maximum removal of both Sb (III) and Sb (V) under optimum pH conditions.
Article
Environmental Sciences
Byung Hun Park, Sehui Kim, A. Young Seo, Tai Gyu Lee
Summary: The study aimed to find the optimal conditions for removing anionic surfactants in wastewater using the coagulant-flocculant method. Through experiments, it was determined that the optimal conditions include a coagulant concentration of 5%, a flocculant concentration of 0.1%, and a pH of 10. Additionally, the study concluded that the coagulant concentration, flocculant concentration, and pH are significant independent variables affecting surfactant removal.
Article
Engineering, Civil
Yeong-Man Kwon, Seok-Jun Kangb, Gye-Chun Choc, Ilhan Chang
Summary: This study investigated the settling behavior of xanthan gum-treated kaolinite suspension in deionized water. Results showed that xanthan gum aggregated the kaolinite particles through electrical interaction and hydrogen bonding, leading to faster settling and denser sediment deposition.
GEOMECHANICS AND ENGINEERING
(2023)
Article
Chemistry, Physical
Franciele Franca Figueiredo, Thabata Karoliny Formicoli de Souza Freitas, Guilherme Goncalves Dias, Henrique Cesar Lopes Geraldino, Ana Paula Jambers Scandelai, Amanda Junkes Vilvert, Juliana Carla Garcia
Summary: In this study, the mucilage of Aloe vera was used as a new auxiliary coagulant for the pre-treatment of textile effluents. The combination of coagulants showed better performance in removing turbidity, COD, DOC, and NOM compared to single inorganic coagulants. After coagulation-flocculation, a photo-Fenton process was used to degrade and mineralize dissolved organic compounds, resulting in the reduction of COD, DOC, and NOM. The toxicity of the treated samples was evaluated using three organisms, and the results showed that the treated samples were non-toxic to two of the organisms.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2022)
Article
Environmental Sciences
Farooq Sher, Kashif Hanif, Abdul Rafey, Ushna Khalid, Ayesha Zafar, Mariam Ameen, Eder C. Lima
Summary: PAC has shown promising potential in purifying water sources, efficiently removing micropollutants without harmful impacts on the environment. By optimizing parameters like PAC dosing, removal efficiency can be significantly improved. Studies on both batch and pilot plant scales have demonstrated that PAC is an effective and feasible solution for micropollutant removal.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Chemistry, Multidisciplinary
Djamel Temim, Saadia Guergazi, Sarah Goudjil, Leila Youcef
Summary: The industrial sector of olive oil production generates large quantities of liquid effluents called oil mill wastewaters (OMW). These effluents, which contain high levels of organic matter and polyphenols, are released into the environment without prior treatment, posing a significant ecological problem. This study tested the performance of the coagulation-flocculation process using aluminium sulphate (AS) in removing certain characteristic parameters of OMW, such as humic acid (HA), chemical oxygen demand (COD), and turbidity. The results showed that the treatment effectively reduced the pollution load of water, with reductions of 67.31% and 71.15% for HA and COD, respectively, and a turbidity reduction of 82.45%.
Article
Engineering, Environmental
Hessam Shabanizadeh, Mohsen Taghavijeloudar
Summary: In this study, pomegranate seed powder was used as a natural alternative to chemical flocculants and coagulants in the flocculation-coagulation process for industrial wastewater treatment. The performance of pomegranate seeds in treating paper recycling wastewater was optimized using response surface methodology. The findings revealed that pomegranate seeds have the potential to be a promising and effective coagulant-flocculant agent for industrial wastewater treatment.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Environmental Sciences
Bolormaa Bayarkhuu, Jeehye Byun
Summary: This study investigates the behavior of nano- and microplastics in coagulation and sedimentation processes using a simple turbidity measurement. The findings suggest that turbidity measurement can provide a rational optimization of water treatment processes for effective removal of nano- and microplastics, offering important practical implications and application value.
Article
Engineering, Environmental
Yutao Zhang, Jianhai Zhao, Zhaoyang Liu, Sufeng Tian, Jingfang Lu, Rong Mu, Hongying Yuan
Summary: In this study, a magnetic magnesium hydroxide coagulant was prepared to effectively remove polyethylene microplastics from wastewater. The highest removal efficiency of microplastics reached 87.1% when the ratio of Mg2+ to OH- was 1:1.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Environmental Sciences
Adelaide Almeida, Krzysztof Jozwiakowski, Alina Kowalczyk-Jusko, Piotr Bugajski, Karolina Kurek, Fatima Carvalho, Anabela Durao, Carlos Ribeiro, Magdalena Gajewska
ENVIRONMENTAL TECHNOLOGY
(2020)
Article
Chemistry, Physical
Zouhour Rajah, Monia Guiza, Rafael R. Solis, F. Javier Rivas, Abdelmottaleb Ouederni
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2019)
Article
Environmental Sciences
Silvana Luz, Javier Rivas, Alexandra Afonso, Fatima Carvalho
Summary: The study analyzed winery wastewater from the Village of Vidigueira in southern Portugal, revealing challenges such as acidic pH, high COD, and turbidity. Adding lime solution can effectively remove pollutants from the wastewater, resulting in a precipitate rich in various elements.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Engineering, Environmental
Rafael R. Solis, F. Javier Rivas, Ana M. Chavez, Dionysios D. Dionysiou
JOURNAL OF HAZARDOUS MATERIALS
(2020)
Article
Engineering, Environmental
Manuel Figueredo, Eva M. Rodriguez, Javier Rivas, Fernando J. Beltran
Summary: Ozonation and photocatalytic oxidation show synergy in water treatment, with potential for photocatalytic ozonation application. pH, alkalinity, and water matrix composition can affect the performance of these systems, especially when dealing with organic pollutants. The study demonstrates the importance of considering water quality factors when applying photocatalytic ozonation for pollutant removal.
Article
Chemistry, Physical
Manuel Checa, Vicente Montes, Javier Rivas, Fernando J. Beltran
Summary: An easily recoverable solid photo-catalyst, FeGOTi, was synthesized and used for catalytic ozonation to degrade primidone. The FeGOTi catalyst exhibited high efficiency with its large surface area, appropriate band gap, and main crystalline forms. Different ozonation processes showed varying performance in terms of removal and mineralization of primidone.
Article
Chemistry, Multidisciplinary
F. J. Beltran, F. J. Rivas
Summary: A theoretical kinetic model of the ozonation process involving direct and free radical reactions in the film and water bulk is developed in this study. The results show that the direct reaction in the film plays an important role in the removal rate of compounds, especially in the fast-moderate kinetic regimes of ozone absorption. The study also reveals that the formation of hydrogen peroxide and its reaction with ozone leads to the formation of free radicals.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Chemistry, Physical
Fernando J. Beltran, Manuel Checa, Javier Rivas, Juan F. Garcia-Araya
Article
Engineering, Environmental
M. Checa, F. J. Beltran, F. J. Rivas, E. Cordero
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2020)
Article
Engineering, Environmental
Luis Madeira, Adelaide Almeida, Margarida Ribau Teixeira, Ana Prazeres, Humberto Chaves, Fatima Carvalho
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2020)
Article
Engineering, Environmental
Tania Correia, Mariana Regato, Adelaide Almeida, Teresa Santos, Leonor Amaral, Fatima Carvalho
JOURNAL OF ECOLOGICAL ENGINEERING
(2020)
Article
Engineering, Environmental
Manuel Figueredo, Eva M. Rodriguez, Javier Rivas, Fernando J. Beltran
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2020)
Article
Engineering, Environmental
J. P. Garcia-Cambero, F. J. Beltran, A. Encinas, F. J. Rivas, A. L. Oropesa
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2019)
Proceedings Paper
Engineering, Industrial
Zouhour Rajah, Monia Guiza, Francisco Javier Rivas Toledo, Abdelmottaleb Ouederni
3RD INTERNATIONAL CONFERENCE ON POWER, ENERGY AND MECHANICAL ENGINEERING (ICPEME 2019)
(2019)
Article
Environmental Sciences
Elizabeth Alvarez-Chavez, Stephane Godbout, Mylene Genereux, Caroline Cote, Alain N. Rousseau, Sebastien Fournel
Summary: This study evaluated the effect of alternative filtering materials and bed aeration on the retention of nutrients and fecal bacteria in woodchip bedded stand-off pads for cows. The results showed that the alternative biofilters were more efficient in removing COD, SS, TN, and NO3-N, while conventional biofilters were more efficient for PO4-P removal. Aeration did not have a significant effect under the tested temperature conditions.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Yike Zhang, Zengyi Ma, Zhuoting Fang, Yuandong Qian, Zhiping Huang, Yilong Ye, Jianhua Yan
Summary: This study investigates the application of oxygen enrichment melting technology in the melting of municipal solid waste incineration fly ash. The results demonstrate that oxygen enrichment technology can reduce energy consumption and operating costs, as well as decrease pollution emissions.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Liangang Xiao, Mingkai Leng, Philip Greenwood, Rongqin Zhao, Zhixiang Xie, Zengtao You, Junguo Liu
Summary: This study investigates the effects of grazing exclusion on soil organic carbon (SOC) accumulation and vegetation recovery. It finds that grazing exclusion can increase the potential for SOC accumulation, and higher annual precipitation is positively correlated with SOC accumulation.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Beatrice Cantoni, Jessica Ianes, Beatrice Bertolo, Selena Ziccardi, Francesco Maffini, Manuela Antonelli
Summary: This study evaluates the performance of ozonation and adsorption as in-series processes compared to standalone processes for the removal of Contaminants of Emerging Concern (CECs) in drinking water. The combination of both processes proves to be more effective than adsorption and ozonation alone. Ozonation improves the adsorption performance of poorly-oxidizable CECs but worsens that of well-oxidizable compounds. This research highlights the importance of considering both processes in the removal of CECs in drinking water treatment plants.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Dan Li, Bingjun Liu, Yang Lu, Jianyu Fu
Summary: A new Standardized compound Drought and Saltwater intrusion Index (SDSI) was developed to detect changes in the severity of CDSEs in six estuaries. The study found that saltwater intrusion plays a dominant role in influencing SDSI severity, and CDSEs vary in frequency, duration and severity among different estuaries.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Yong-Qiang Li, Rui Sun, Chong-Miao Zhang, Zi-Xuan Liu, Rui-tao Chen, Jian Zhao, Hua-dong Gu, Huan-Cai Yin
Summary: In this study, an electron beam excitation multi-wavelength ultraviolet (EBE-MW-UV) system was established and found to have significantly higher microbial inactivation effects compared to single-wavelength UV-LEDs in water. Mechanism analysis revealed that EBE-MW-UV damaged microbial DNA and proteins, and generated additional reactive oxygen species, leading to microbial inactivation.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Kaili Ma, Xinxin Han, Qiujuan Li, Yu Kong, Qiaoli Liu, Xu Yan, Yahong Luo, Xiaopin Li, Huiyang Wen, Zhiguo Cao
Summary: This study reveals that the use of a tryptophan-degrading microbial consortium (TDC) can enhance the hydrolysis efficiency of waste activated sludge (WAS), increasing the yield and quality of short chain fatty acids (SCFAs) and improving the solubilization and release of organic substances from WAS.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Ling Xiong, Rui Li
Summary: Incorporating Ecosystem Service Value (ESV) into land use planning can provide informed land management decisions. This study evaluates the ESV of Guizhou Province in China's karst region. The results show an increase in total ESV over the past two decades due to ecological restoration projects.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
M. Geetha Jenifel
Summary: This article discusses the importance of water and the pollution of freshwater resources, and introduces the use of machine learning models and blockchain technology to predict and protect water quality.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Stanslaus Terengia Materu, Taotao Chen, Chang Liu, Daocai Chi, Meng Jun
Summary: The study showed that H2SO4-modified biochar can reduce P leaching, increase soil available P, and enhance plant P uptake in alternate wetting and drying irrigation systems. Biochar additions B20A and IAWDB20A-M were effective in improving yield, reducing P leaching, and increasing APB.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Amir Nouri, Ali Akbar Zinatizadeh, Sirus Zinadini, Mark Van Loosdrecht
Summary: This study focuses on the development of an air-lift bio-electrochemical reactor (ALBER) with a continuous feeding regime to enhance nitrogen removal from synthetic wastewater. The effect of temperature, hydraulic retention time (HRT), N -NH+4 /TN ratio, and current density on the reactor performance was investigated, and the ALBER achieved a maximum TN removal of 73%. The results suggest that the ALBER has potential for treating industrial wastewater at low temperatures.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Peifang Wang, Guoxiang You, Yang Gao, Juan Chen, Xun Wang, Chao Wang
Summary: This study investigated the ecological processes of microbial communities and N- and P-transformation processes in multistage agricultural drainage ditches. The results showed that the microbial communities were co-shaped by agricultural practices and ditch size, which further governed the N and P removal performance.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Xiaofeng Niu, Huan Wang, Tao Wang, Peiyu Zhang, Huan Zhang, Hongxia Wang, Xianghong Kong, Songguang Xie, Jun Xu
Summary: Microorganisms play a critical role in maintaining ecosystem balance, and environmental stressors can affect the assembly processes of microbial communities. The study found that different stressors have opposite effects on microbial community assembly in water and sediment, and warming has different influences compared to herbicides and nutrients.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Yuqing Tan, Qiming Cheng, Fengwei Lyu, Fei Liu, Linhao Liu, Yihong Su, Shaochun Yuan, Wenyu Xiao, Zhen Liu, Yao Chen
Summary: The exacerbation of global warming, extreme weather events, and rapid urbanization have led to increased flooding in urban areas. China has adopted sponge city as an efficient means of preventing and controlling urban floods. Using a SWMM-FVCOM model, the hydrological reduction and control effect of sponge city construction (SPCC) within a university campus were evaluated. The study found that implementing SPCC effectively mitigates surface runoff and reduces the severity of urban flooding. However, the efficacy of runoff control decreases with longer rainfall return periods.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Zhonghan Chen, Qiuyan Li, Shibo Yan, Juan Xu, Qiaoyun Lin, Zhuangming Zhao, Ziying He
Summary: Tidal rivers are important biochemical reaction channels, receiving carbon from wastewater and agricultural drains, affecting CO2 emissions. Through modeling and data analysis, researchers explored carbon distribution, emissions, and greenhouse effects, emphasizing the potential of river management to change global CO2 emissions under climate change.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
