Article
Environmental Sciences
Nuno Jorge, Ana R. Teixeira, Marco S. Lucas, Jose A. Peres
Summary: Due to the consumers' demand for quality wines, the production of winery wastewater with a high organic content poses potential environmental impacts. This study introduces the production of natural organic coagulants and their application in the coagulation-flocculation-decantation process, accompanied by a photo-Fenton process using hydrogen peroxide and potassium persulfate. The results demonstrate effective removal of turbidity, total suspended solids, and dissolved organic carbon from the wastewater. Furthermore, the combination of the two processes reduces operational costs and ensures compliance with wastewater discharge standards.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Nuno Jorge, Ana R. Teixeira, Marco S. Lucas, Jose A. Peres
Summary: In this study, a physical-chemical process combining plant-based coagulants (PBCs) with advanced oxidation processes (AOPs) was investigated for efficient remediation of winery wastewater (WW) to meet Portuguese legal limits. The combination of Platanus acerif 'olia (P.a.) seeds with polyvinylpolypyrrolidone (PVPP) achieved high turbidity (97.3%) and chemical oxygen demand (COD = 48.2%) removals. Different AOPs were studied, and the photo-Fenton process showed the highest COD removal efficiency (88.0%). Pre-treatment of WW by PBCs followed by EDDS/photo-Fenton further increased COD removal, reaching 95.7% COD removal and improving biodegradability.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
David Vlotman, David Key, Bradley Cerff, Bernard Jan Bladergroen
Summary: This study investigated the potential application of a wastewater treatment technology called shear enhanced flotation separation (SEFS) in treating winery wastewater. By subjecting the winery effluent to coagulation and flocculation processes in a high shear environment, significant reductions in turbidity, total suspended solids, and COD were achieved.
Article
Environmental Sciences
Nuno Jorge, Ana R. Teixeira, Carlos C. Matos, Marco S. Lucas, Jose A. Peres
Summary: This research evaluated a novel treatment process for winery wastewater, utilizing a chemical-based approach to reduce the high organic carbon content and improve treatment efficiency. The combination of CFD process and UV-C/ferrous iron/ozone system proved to be effective in treating winery wastewater.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2021)
Article
Environmental Sciences
Zehao Wang, Hongwei Song, Lei Song, Zhenzhou Yin, Kai Hui, Wenjian Gao, Lili Xuan
Summary: The combination of electro-coagulation (EC) process and added free nitrous acid (FNA) improves sludge dewaterability and the removal of heavy metals. The EC process disrupts the sludge structure and adding FNA causes sludge cells to lyse, facilitating the removal of tightly bound extracellular polymeric substances (TB-EPS) and releasing bound water.
Article
Engineering, Chemical
Teresa Zayas, Alejandra de Gante, Maria Guadalupe Tenorio Arvide, Miriam Vega Hernandez, Guillermo Soriano-Moro, Leonardo Salgado
Summary: Nejayote, a byproduct of traditional corn tortilla flour production, was treated using coagulation/flocculation and electrocoagulation processes. The exclusive application of electrocoagulation was found to be the most effective method in removing color, turbidity, and chemical oxygen demand (COD). The combination of coagulation/flocculation-electrocoagulation also showed promising results in removing these pollutants from nejayote wastewater.
DESALINATION AND WATER TREATMENT
(2022)
Article
Polymer Science
Courtney Moore, Weijue Gao, Pedram Fatehi
Summary: The study aimed to produce lignin-based flocculants for simulated wastewater by attempting radical polymerization of METAC with acid-washed and unwashed softwood kraft lignin. Results showed that lignin-METAC polymers improved water solubility and cationic charge density, and exhibited significant removal effects on COD and TOC in wastewater treatment. The use of METAC-modified lignin as a flocculant led to enhanced organic content reduction in wastewater treatment processes.
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
Green & Sustainable Science & Technology
Radhakrishnan Naresh Kumar, Somya Sadaf, Mohini Verma, Shubhrasekhar Chakraborty, Shweta Kumari, Veerababu Polisetti, Parashuram Kallem, Jawed Iqbal, Fawzi Banat
Summary: The use of novel flocculants in combination with a sequencing batch reactor (SBR) has proven effective in reducing polluted effluents from landfill leachate and municipal wastewater. Co-treatment of landfill leachate with municipal wastewater in SBR, followed by coagulation-flocculation, achieved significant removal of COD, ammonia, nitrate, phosphate, turbidity, and TSS. The combined treatment with the new flocculants successfully met international standards for discharges to inland surface water.
Article
Green & Sustainable Science & Technology
Wan-Chen Lee, Chih-Cheng Chang
Summary: This study investigated the use of a non-ionic polyacrylamide (NPAM) flocculant for treating swine wastewater. The optimal pH value for NPAM coagulation-flocculation was found to be 11 or higher. After adjusting the pH value and applying NPAM, high removal rates for copper ions, zinc ions, NH4+-N, total phosphate (TP), and total nitrogen (TN) were achieved. The study suggests that combining organic fertilizer production and power generation can enhance the strategy for swine wastewater treatment and contribute to the sustainable development of the pig industry.
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
Engineering, Environmental
Seyyedeh Cobra Azimi, Farhad Shirini, Alireza Pendashteh
Summary: The present study evaluated the efficiency of turbidity and COD reduction from wood industry wastewater using a combined coagulation-flocculation-decantation (CFD) - Fenton process. Polyaluminum chloride was found to be an effective coagulant, leading to high removal rates of COD and turbidity in the CFD process. Optimization of the Fenton process using response surface methodology resulted in further improvements, achieving high removal rates under optimal conditions. The combination of CFD and Fenton process showed promising results for the treatment of wood industry wastewater.
WATER ENVIRONMENT RESEARCH
(2021)
Article
Materials Science, Paper & Wood
Alejandro Barrero-Fernandez, Roberto Aguado, Ana Moral, Celeste Brindley, Menta Ballesteros
Summary: Cellulose-based agents for wastewater treatment, particularly for coagulation-flocculation processes, are gaining increasing interest due to their high availability, functionality, renewability, and biodegradability. Studies in this field show a multidisciplinary approach with significant contributions from various institutions and journals. Keyword analysis categorizes works into three major clusters based on cellulose, coagulation, flocculation, cellulose derivatives, polysaccharides, and wastewater treatment.
Article
Environmental Sciences
Saeed Ghanbari Azad Pashaki, Mehdi Khojastehpour, Mohammadali Ebrahimi-Nik, Silvia Tedesco
Summary: This study aimed to investigate the potential reuse of recovered Fe-based coagulant for the treatment of municipal waste landfill leachate. The results showed that sulfuric acid was more effective than hydrochloric acid in leaching Fe from the sludge. The highest rate of Fe recovery was achieved without ultrasound treatment. Comparative experiments revealed that the recovered coagulant led to a significant removal of COD and total suspended solid, outperforming the virgin FeCl3 under optimal conditions. This study demonstrated the feasibility and effectiveness of using recovered Fe as an eco-friendly coagulant for landfill leachate treatment.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Chemical
Haobo He, Yongjun Liu, Aining Zhang, Zhuangzhuang Yang, Xingshe Liu, Rushuo Yang, Hui Tang, Zhihua Li
Summary: This study designed a swirl flocculation-enhanced reactor (SFR) to address the issues of high dosage and poor pollutant removal in the pretreatment process of coal chemical wastewater (CCW). Through experimentation and computational fluid dynamics (CFD) simulation, the optimal parameters and operating conditions of the SFR were determined, and its feasibility and effectiveness in CCW treatment were validated.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Environmental Sciences
Rita Beltrao Martins, Nuno Jorge, Marco S. Lucas, Anabela Raymundo, Ana I. R. N. A. Barros, Jose A. Peres
Summary: This study investigates the use of plant by-products as coagulants for treating elderberry wastewater, with promising results obtained after optimization. The combination of plant-based coagulants and the photo-Fenton process provides a potential strategy for effective wastewater treatment.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Article
Green & Sustainable Science & Technology
Cristina Matos, Antonio Pirra
Summary: This paper discusses the use of water and energy in wine production and its associated environmental issues. Through the implementation of a water use monitoring plan, the study found a correlation between high water consumption and high energy consumption and CO2 emissions. These research findings are of great significance for environmental improvement in wine production regions.
Article
Chemistry, Applied
Ana R. Teixeira, Nuno Jorge, Jose R. Fernandes, Marco S. Lucas, Jose A. Peres
Summary: This study investigated the decolourization of a textile dye and the control of an invasive plant species using a combination of pollen adsorption and UV-A-Fenton process. The results showed that the combination of biosorption and NTA-UV-A-Fenton was the most efficient system, achieving a high decolourization rate and organic carbon removal.
TOPICS IN CATALYSIS
(2022)
Article
Environmental Sciences
Nuno Jorge, Ana R. Teixeira, Marco S. Lucas, Jose A. Peres
Summary: Due to the consumers' demand for quality wines, the production of winery wastewater with a high organic content poses potential environmental impacts. This study introduces the production of natural organic coagulants and their application in the coagulation-flocculation-decantation process, accompanied by a photo-Fenton process using hydrogen peroxide and potassium persulfate. The results demonstrate effective removal of turbidity, total suspended solids, and dissolved organic carbon from the wastewater. Furthermore, the combination of the two processes reduces operational costs and ensures compliance with wastewater discharge standards.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Nuno Jorge, Ana R. Teixeira, Jose R. Fernandes, Ivo Oliveira, Marco S. Lucas, Jose A. Peres
Summary: The degradation of caffeic acid in model agro-industrial wastewater was studied using a UV-A-Fenton system. Batch experiments showed that pH 3.0 achieved higher generation of HO center dot and thus higher caffeic acid degradation (>99.5%). The effects of H2O2 and Fe2+ concentrations were evaluated, and a pseudo first-order kinetic model was found to fit the results. Continuous mode experiments were performed at different flow rates, showing that increasing the flow rate resulted in significantly higher removal rates of caffeic acid and dissolved organic carbon (DOC). It is concluded that continuous modes are advantageous for treating real agro-industrial wastewaters.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2023)
Article
Environmental Sciences
Nuno Jorge, Ana R. Teixeira, Marco S. Lucas, Jose A. Peres
Summary: In this study, a physical-chemical process combining plant-based coagulants (PBCs) with advanced oxidation processes (AOPs) was investigated for efficient remediation of winery wastewater (WW) to meet Portuguese legal limits. The combination of Platanus acerif 'olia (P.a.) seeds with polyvinylpolypyrrolidone (PVPP) achieved high turbidity (97.3%) and chemical oxygen demand (COD = 48.2%) removals. Different AOPs were studied, and the photo-Fenton process showed the highest COD removal efficiency (88.0%). Pre-treatment of WW by PBCs followed by EDDS/photo-Fenton further increased COD removal, reaching 95.7% COD removal and improving biodegradability.
ENVIRONMENTAL RESEARCH
(2023)
Editorial Material
Environmental Sciences
Gassan Hodaifa, Antonio Zuorro, Joaquin R. Dominguez, Juan Garcia Rodriguez, Jose A. Peres, Zacharias Frontistis, Mha Albqmi
Review
Chemistry, Physical
Ana Gomes, Amadeu Borges, Jose A. Peres, Marco S. Lucas
Summary: Agro-industrial activities generate large volumes of wastewater, which can cause serious environmental problems if discharged without proper treatment. Advanced oxidation processes (AOPs) have been increasingly used as a pre-treatment in bioenergy production to enhance the biodegradability of wastewater and increase the production of biogas, biodiesel, and bioethanol. Different AOPs, such as wet air oxidation, sonolysis, and ozonation, have shown promise in the pre-treatment of agro-industrial wastewater. However, obstacles such as high energy requirements and chemical reagents costs need to be addressed for the cost-effective application of AOPs in bioenergy production.
Article
Environmental Sciences
Ana R. Teixeira, Nuno Jorge, Marco S. Lucas, Jose A. Peres
Summary: In this study, the treatment of red and white winery wastewaters and olive mill wastewater using Fenton-based processes was investigated. The results showed that UV-C/Fenton was the most effective process, and operational conditions such as pH, H2O2 and Fe2+ concentrations played a significant role in dissolved organic carbon (DOC) removal and the energy consumption of the reactor. Addition of nitrilotriacetic acid (NTA) was tested to prevent iron precipitation. Comparative experiments in a semi-continuous reactor demonstrated the potential application of this process on a large scale, with low reagents consumption and reduced energy requirements.
ENVIRONMENTAL RESEARCH
(2024)
Article
Green & Sustainable Science & Technology
Nuno Jorge, Ana R. Teixeira, Marco S. Lucas, Jose A. Peres
Summary: This study evaluated the removal of dissolved organic carbon (DOC) and total polyphenols (TPh) from agro-industrial wastewater using coagulation-flocculation-decantation (CFD) and Fenton-based processes. The results showed that both CFD and Fenton-based processes achieved high removal efficiencies. The combination of both processes achieved near complete removal of TPh and DOC with high energy efficiency.
Article
Engineering, Chemical
Arvin Sohrabi, Mousa Meratizaman, Shuli Liu
Summary: This paper simulates and discusses possible solutions to improve the economic and technical performances of a battery-less renewable energy-powered BWRO system under real climate conditions. The study finds that the photovoltaic-based system performs better in terms of specific energy consumption and unused energy ratio.
Article
Engineering, Chemical
Chunlan Pan, Xiaoyin Hu, Vishal Goyal, Theyab R. Alsenani, Salem Alkhalaf, Tamim Alkhalifah, Fahad Alturise, Hamad Almujibah, H. Elhosiny Ali
Summary: This paper introduces a novel waste heat recovery method using the hot flue gas from a ship's engine to produce liquefied hydrogen while meeting the ship's air-conditioning requirement. A comprehensive feasibility assessment is conducted and an artificial neural network with a multiobjective grey wolf optimization method is used for optimization. The findings indicate the highest mean sensitivity index of the flash temperature and the best optimization scenario for exergy efficiency, CO2 emission reduction, and liquefied hydrogen cost.
Article
Engineering, Chemical
Daniele Chinello, Jan Post, Louis C. P. M. de Smet
Summary: In this study, PVDF-based anion-exchange membranes were designed to selectively separate nitrate from chloride. Experimental data showed that increasing the concentration of PVDF enhanced nitrate transport but also increased the membrane electrical resistance. The selectivity of nitrate was found to be independent of the membrane thickness and mainly driven by the increased affinity between the anion and the membrane.
Article
Engineering, Chemical
Umar Noor, Muhammad Fayyaz Farid, Ammara Sharif, Amna Saleem, Zubair Nabi, Muhammad Furqan Mughal, Kiran Abbas, Toheed Ahmed
Summary: Global water scarcity is increasing, and water desalination is an important solution. Multifunctional advanced materials, such as membrane materials and solar-driven desalination, play a crucial role in water desalination. Additionally, these materials can be used for water purification, wastewater treatment, and pollutant elimination.
Article
Engineering, Chemical
Emrah Gumus
Summary: With growing global concerns about climate change and environmental impacts, the use of nuclear energy in naval vessels offers a cleaner and more efficient solution to reduce emissions and address water and energy supply challenges. This study explores a novel system that combines a nuclear-driven supercritical carbon dioxide power cycle with reverse osmosis cogeneration to meet the water and electricity demands in maritime operations, enhancing the sustainability, efficiency, and self-sufficiency of naval vessels. The results indicate that the system has the potential to be a viable and effective solution for naval operations.
Article
Engineering, Chemical
Dao Thi Thanh Huyen, Saikat Sinha Ray, Young -Nam Kwon
Summary: This study focuses on the modification of a commercially available polyamide thin-film composite membrane with a zwitterionic material to enhance its fouling resistance. The modified membrane shows improved salt rejection and reduced permeability compared to the pristine membrane. Fouling tests demonstrate that the modified membrane has a lower fouling ratio and higher recovery ratio. The enhanced antifouling characteristics are attributed to the improved hydrophilicity resulting from the zwitterionic brushes and the salting-in effect.
Article
Engineering, Chemical
Niklas Koeller, Lukas Mankertz, Selina Finger, Christian J. Linnartz, Matthias Wessling
Summary: This study presents a methodology to scale up Flow-electrode Capacitive Deionization (FCDI) technology from lab-scale to pilot-scale systems. By increasing membrane area and using a stacking approach, the FCDI modules were successfully scaled up and achieved a salt transfer rate comparable to lab-scale systems. This provides a foundation for future assessments of energy demand and economics.
Article
Engineering, Chemical
Mona Gulied, Sifani Zavahir, Tasneem Elmakki, Hyunwoong Park, Guillermo Hijos Gago, Ho Kyong Shon, Dong Suk Han
Summary: This study introduces a novel hybrid system that combines direct contact membrane distillation (DCMD) and electrically switched ion exchange (ESIX) to facilitate seawater reverse osmosis (SWRO) brine enrichment and selective lithium recovery.
Article
Engineering, Chemical
Zhiqiang Zhang, Ruifeng Deng, Jiao Zhang, Lu She, Guangfeng Wei, Renyong Jia, Pengyu Xiang, Siqing Xia
Summary: A transmembrane electro-chemisorption system with authigenic acid and base was developed for enhancing ammonia recovery from strong ammonia wastewater. The system efficiently transformed ammonium into free ammonia, which was then adsorbed and recovered through transmembrane chemisorption. This system yielded pure (NH4)2SO4 product and produced valuable byproducts of pure hydrogen and oxygen. Higher applied voltage resulted in better ammonia recovery.
Article
Engineering, Chemical
Alena Popova, Sandrine Boivin, Takuji Shintani, Takahiro Fujioka
Summary: This study aimed to produce a high-integrity RO membrane by forming a polyamide skin layer on a TE support layer, in order to enhance the integrity of the membrane and improve the microbiological safety of potable water reuse.
Article
Engineering, Chemical
Sanjana Yagnambhatt, Saber Khanmohammadi, Jonathan Maisonneuve
Summary: This study investigates the concept of using heat to enhance reverse osmosis (RO) desalination. The effect of temperature on water permeate flux, specific energy, permeate quality, and applied operating pressures is evaluated using an analytical model. The results suggest that under specific conditions, the tradeoff between savings in mechanical pump work and thermal energy input in thermally-enhanced RO can be favorable, leading to overall energy savings.
Article
Engineering, Chemical
Jiangju Si, Chenrui Xue, Shun Li, Linchao Yang, Weiwei Li, Jie Yang, Jihong Lan, Ningbo Sun
Summary: To meet the huge demand for lithium resources, there is an urgent need to develop a new efficient technology for lithium recovery from salt-lake brines. In this study, a selective membrane capacitive deionization system is reported, which achieves high lithium recovery capacity and rate through the use of materials with efficient intercalated pseudo-capacitance and a high specific area porous carbon. The use of a modified thin-coated membrane allows for selective Li+ recovery, and adjusting the concentrations of Li+ and Mg2+ in the feed solution enables higher Li+/Mg2+ selectivity.
Article
Engineering, Chemical
Mohamed R. Salem, R. Y. Sakr, Ghazy M. R. Assassa, Omar A. Aly
Summary: This research proposes a new method of using wasted thermal energies as an additional heating source for solar still distillation units (SSDUs) to increase productivity and reduce pollution and global warming. By testing two SSDUs, the study shows that heating airflow can raise temperatures, enhance freshwater production, and improve system thermal efficiency.
Article
Engineering, Chemical
Qimeng Sun, Miao Sun, Linyan Yang, Yuan Gao, Xinghai Zhou, Lihua Lyu, Chunyan Wei
Summary: This study presents an innovative design and fabrication of a fabric-based conical roll (FCR) evaporator, which enables low-temperature evaporation and achieves high evaporation efficiency with excellent thermal management ability. The evaporator has demonstrated advanced light-harvesting capability and can produce freshwater that meets drinking water standards, showing great potential for applications in desalination and sewage treatment.
Article
Engineering, Chemical
Yidong Zhang, Wangfang Deng, Meiyan Wu, Chao Liu, Guang Yu, Qiu Cui, Pedram Fatehi, Chunlin Xu, Bin Li
Summary: In this study, a novel polydopamine-functionalized lignin-containing pulp foam evaporator with high-efficiency desalination and multi-contaminant adsorption capabilities was designed. The foam evaporator showed excellent light absorption, water absorption, thermal conductivity, and chelation abilities, allowing for solar evaporation and contaminant adsorption synergistically. It also exhibited potential applications in metal ion concentration and contaminated seawater treatments, and demonstrated superior biodegradability compared to poly-styrene foam. This foam material holds promise for developing multifunctional photo-thermal systems for solar-driven water purification.
