Article
Water Resources
Nour Al Hadidi, Majeda Al Hadidi
Summary: Decentralized wastewater plants are cost-effective and widely used in small ruler communities. The study evaluated the suitability of reclaimed wastewater for irrigation and found that there are certain restrictions on its use.
APPLIED WATER SCIENCE
(2021)
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
Kangying Guo, Baoyu Gao, Jie Wang, Jingwen Pan, Qinyan Yue, Xing Xu
Summary: In this study, a papermaking sludge-based flocculant (PSBF) was compared to polyaluminium chloride (PAC) and polyacrylamide (PAM) for practical printing and dyeing wastewater (PPDW) treatment. PSBF showed better performance than PAC at a pH higher than 7.0, and when used in combination with PAC, it enhanced removal efficiencies of color, CODCr and turbidity in PPDW treatment.
FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
(2021)
Article
Engineering, Environmental
Arseto Yekti Bagastyo, Anita Dwi Anggrainy, Syaima Gatneh, Ervin Nurhayati, Diah Susanti, Erwin Widodo, Totok Soehartanto
Summary: The study demonstrates that bittern as a coagulant has the potential for efficient removal of pollutants in fish market wastewater treatment, with the optimal operating conditions at pH 10.5 and a dosage of 1.284 mL L-1. Approximately 51% of struvite and 48% of calcite precipitates in the generated sludge can be potentially used as supplementary material in the agrochemical industry after further treatment.
WATER SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Environmental
Chris Agida Uko, Jimoh Oladejo Tijani, Saka Ambali Abdulkareem, Saheed Mustapha, Titus Chinedu Egbosiuba, Edison Muzenda
Summary: The MgO/WO3 nanocomposites were prepared and used as nanoadsorbents for the removal of heavy metals from dyeing wastewater. The nanomaterials exhibited a distinct spherical shape and strong interaction between nanoparticles. The MgO/WO3 nanoadsorbent with a mixing ratio of 4:1 showed higher adsorption efficiency and excellent regeneration potentials. The adsorption mechanism involved electrostatic attraction, ion exchange, and pore diffusion. The thermodynamic study confirmed the endothermic and spontaneous nature of the adsorption process.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Chemistry, Multidisciplinary
Yunlong Zhao, Yajie Zheng, Yinglin Peng, Hanbing He, Zhaoming Sun
Summary: A novel method was reported for synthesizing poly-silicate aluminum sulfate coagulant (PSAS) using a silica-alumina sol. Different basicity PSAS(1.11) and PSAS(3.27) were obtained by controlling the Al molar ratio of the precursor to aluminum sulfate. PSAS(1.11) coagulant prepared with low modulus water glass exhibited low turbidity and good stability.
Article
Biochemistry & Molecular Biology
Ruifeng Wang, Ligao Deng, Xuejing Fan, Kai Li, Haiqin Lu, Wen Li
Summary: The MCC-magnesium hydroxide composite adsorbent prepared by reacting MCC, magnesium sulfate hexahydrate, and trisodium citrate in an ammonia bath can efficiently adsorb and remove Co(II) ions, with optimal process parameters including an MCC-MH dosage of 2.5 mg/mL, a contact reaction equilibrium time of 50 min, a Co(II) solution pH of 6.0-8.0, an initial Co(II) concentration of 300 mg/L, and a temperature of 303 K. The removal rate of Co(II) solution by MCC-MH was as high as 97.67%, and the maximum adsorption capacity reached 153.84 mg/g.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Environmental Sciences
Shuangshuang Li, Mingcan Cai, Qing Wang, Zixi Yuan, Ruixuan Li, Chun Wang, Yingxue Sun
Summary: Strict standards have been implemented worldwide for the treatment and discharge of dyeing wastewater. However, there are still traces of pollutants, especially emerging pollutants, in the effluent of dyeing wastewater treatment plants (DWTPs). This study investigated the chronic compound toxic effects of DWTP effluent on adult zebrafish over a period of three months. The results showed that the treatment group had significantly higher mortality and fatness, and significantly lower body weight and body length. Long-term exposure to DWTP effluent also led to abnormal liver development and changes in the gut microbiota of zebrafish.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Bahareh Tajdini, Hooman Vatankhah, Conner C. Murray, Alexander Liethen, Christopher Bellona
Summary: The occurrence of perfluoroalkyl acids (PFAAs) in wastewater effluent has led to a greater need for effective sorption-based PFAA treatment methods. This study investigated the impact of ozone (O3)-biologically active filtration (BAF) as pretreatment options for nonselective and selective adsorbents. The results showed that O3-BAF in tandem achieved the highest PFAA removal performance improvement. Additionally, the transformation of hydrophobic effluent organic matter (EfOM) to hydrophilic molecules during O3 and biotransformation of EfOM during BAF were the main mechanisms responsible for improving PFAA removal.
Article
Engineering, Environmental
Cindy Weng, Marlena M. Hinkle, William A. Mitch
Summary: In this study, a reductive electrochemical reactor with a stainless-steel cathode was used to degrade chloramine disinfectant residuals in municipal wastewater effluents. High degradation rates and efficiencies were achieved with a 304-grade stainless-steel cathode and a cathode with a high surface area. The electricity cost associated with this method could be comparable to the cost of purchasing sodium bisulfite in areas with low electricity costs.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Environmental Sciences
Minja Bogunovic, Ivana Ivancev-Tumbas, Marjeta Cesen, Tatjana Djakovic Sekulic, Jelena Prodanovic, Aleksandra Tubic, David Heath, Ester Heath
Summary: The presence of 48 emerging micropollutants was tested in influent and effluent from a wastewater treatment plant in Serbia. Different treatments were investigated for the removal of these micropollutants, with some showing high removal efficiencies. Novel natural coagulant showed significant potential compared to conventional coagulant.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Shao-Wei Tsai, Dinh Viet Cuong, Chia -Hung Hou
Summary: This study demonstrates the feasibility of using a nickel hexacyanoferrate (NiHCF) electrode for selective NH4+ capture from wastewater. The NiHCF electrode shows higher selectivity towards NH4+ ions and has a larger salt adsorption capacity. These findings are important for achieving selective nutrient removal and recovery from wastewater using intercalation-type electrodes.
Article
Engineering, Chemical
Priyanshu Ranjan Gupta, Saravana Perumal Shanmukham, Chirag G. Patel, John H. Lienhard, Jaichander Swaminathan
Summary: Reverse osmosis and distillation are commonly used in the textile dyeing industry for water recycling and waste treatment. This study shows that replacing chloride with sulfate anions in the dyeing process can save energy and enable the use of nanofiltration membranes for brine concentration.
Article
Chemistry, Multidisciplinary
Jiaqiang Wu, Yanfang Liu, Xuejing Yang, Jinling Wang, Jie Yang
Summary: An efficient coagulant of lithium borohydride-iron oxychloride (LiBH4_FeOCl) was prepared using an intercalation process, showing good performance in coagulation of various dye pollutants. The mechanism analysis revealed that LiBH4_FeOCl breaks, disperses, and electrostatically adsorbs dye molecules, providing a competitive alternative to traditional coagulants.
CHINESE CHEMICAL LETTERS
(2021)
Article
Engineering, Chemical
Hao Huang, Nitzan Maman, Roy Bernstein
Summary: This research presents a simple method to fabricate a mixed-charged polyelectrolyte complex NF (PECNF) membrane for high-recovery effluent desalination, which exhibits lower scaling propensity and permeate flux reduction rate compared to commercial polyamide NF membrane (NF 270), making it a promising alternative.
Article
Biotechnology & Applied Microbiology
Luana R. Hollanda, Catia A. L. Graca, Lidiane M. Andrade, Maria A. Mendes, Osvaldo Chiavone-Filho, Antonio C. S. C. Teixeira
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2019)
Article
Engineering, Chemical
M. F. Monteiro, M. H. Moura-Neto, G. M. Macedo, G. Silva, D. J. Silva, L. S. Pereira, J. F. Nascimento, O. Chiavone-Filho
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2019)
Article
Engineering, Environmental
Fernando J. Cunha-Filho, Andressa Mota-Lima, Luciana A. Ratkievicius, Danielle J. Silva, Douglas N. Silva, Osvaldo Chiavone-Filho, Claudio A. Oller do Nascimento
JOURNAL OF WATER PROCESS ENGINEERING
(2019)
Article
Environmental Sciences
Celyna K. O. Silva-Rackov, Silvia S. O. Silva, Alessandra R. Souza, Leandro G. Aguiar, Dannielle J. Silva, Marilda M. G. R. Vianna, Claudio A. O. Nascimento, Osvaldo Chiavone-Filho
Summary: The study compared the efficiency of iron-modified diatomite catalyzed persulfate activation method with traditional activation methods, showing that the former was more effective in pollutant removal and could be reused with potential environmental and economic benefits.
ENVIRONMENTAL TECHNOLOGY
(2021)
Article
Environmental Sciences
Gabriela P. Mendes, Vivian M. A. Magalhaes, Lelia C. R. Soares, Rayanne M. Aranha, Claudio A. O. Nascimento, Marilda M. G. R. Vianna, Osvaldo Chiavone-Filho
JOURNAL OF ENVIRONMENTAL SCIENCES
(2020)
Article
Thermodynamics
Mateus F. Monteiro, Mario H. Moura-Neto, Andre L. N. Mota, Camila S. Figueiredo, Joao R. P. Ciambelli, Jailton F. do Nascimento, Leonardo S. Pereira, Osvaldo Chiavone-Filho
Summary: The study investigated the solubility of NaCl in water-MEG mixtures and measured the electrical conductivity. Results showed that temperature has a weak impact on NaCl solubility, but a reverse behavior with increasing temperature was observed for MEG contents higher than 90 wt %.
JOURNAL OF CHEMICAL AND ENGINEERING DATA
(2021)
Article
Thermodynamics
Mario H. Moura-Neto, Mateus F. Monteiro, Fedra A. Ferreira, Dannielle J. Silva, Camila S. Figueiredo, Joao R. P. Ciambelli, Leonardo S. Pereira, Jailton F. do Nascimento, Osvaldo Chiavone-Filho
Summary: Monoethylene glycol (MEG) is commonly used as a gas hydrate inhibitor for natural gas flow assurance. Density and electrical conductivity measurements of water + MEG + NaCl mixtures were conducted over a wide range of temperature and solvent concentrations, with accurate representation achieved through the use of theoretical solutions and semi-empirical correlations. The Matlab environment proved robust in solving the nonlinear system of equations, demonstrating the required accuracy for industrial application.
JOURNAL OF CHEMICAL AND ENGINEERING DATA
(2021)
Article
Engineering, Chemical
Mario H. Moura-Neto, Mateus Fernandes Monteiro, Marcell Santana Deus, Katherine Carrilho de Oliveira Deus, Jose Augusto Furtado Oliveira, Leonardo Santos Pereira, Osvaldo Chiavone-Filho
Summary: This study aimed to develop a calculation methodology using the Pitzer-Lorimer approach for salt solubility in mixed solvents. By analyzing the solubility data of salts in water-MEG mixtures, experimental studies for eight electrolyte species were obtained. The designed computational tool, using Python language, demonstrated the feasibility of accurately describing the salt solubility in mixed solvents.
Article
Engineering, Chemical
M. H. Moura-Neto, M. F. Monteiro, L. S. Pereira, J. F. Do Nascimento, O. Chiavone-Filho
Summary: Monoethylene glycol (MEG) is used to mitigate natural gas hydrate in subsea pipelines, and its recovery and regeneration are important for cost and environmental impact reduction. Different process configurations were evaluated using OLI software, showing varying results in terms of recovery and purity. The successful implementation of MRU in OLI proved its value in process design and analysis.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Engineering, Environmental
Vivian M. A. Magalhaes, Gabriela P. Mendes, Jose Daladie B. Costa-Filho, Renato Cohen, Carmem S. M. Partiti, Marilda M. G. R. Vianna, Osvaldo Chiavone-Filho
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2020)
Article
Engineering, Chemical
Adolfo L. Figueredo, Fabiola C. Carvalho, Jose C. Nascimento, Juan A. C. Ruiz, Osvaldo Chiavone-Filho, Camila G. Pereira
BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING
(2019)
Article
Engineering, Environmental
Talitha de Andrade Borges, Osvaldo Chiavone-Filho, Antonio Carlos Silva Costa Teixeira, Edson Luiz Foletto, Guilherme Luiz Dotto, Claudio Augusto Oller do Nascimento
INTERNATIONAL JOURNAL OF ENVIRONMENTAL TECHNOLOGY AND MANAGEMENT
(2019)
Article
Chemistry, Multidisciplinary
Ingrid A. Goncalves, Jairo Barauna, Fernando J. Cunha-Filho, Osvaldo Chiavone, Fussier O. Vitoriano, Clodomiro Alves Junior, Andressa Mota-Lima
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
(2019)
Meeting Abstract
Chemistry, Multidisciplinary
Celyna Rackov, Silvia Shelly Silva, Dannielle Janainne Silva, Leandro Aguiar, Marilda Vianna, Osvaldo Chiavone-Filho, Claudio Oller do Nascimento
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2018)
Article
Engineering, Chemical
Karina Matugi, Osvaldo Chiavone-Filho, Marcelo Perencin de Arruda Ribeiro, Rafael de Pelegrini Soares, Roberto de Campos Giordano
BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING
(2018)
Article
Engineering, Chemical
Yunfei Yu, Xue Yang, Chenchen Zhang, Jie Chen, Wei Lin, Jianqiang Meng
Summary: This study reports an environmentally friendly and simple approach for preparing double-network (DN) ion gel membranes with high strength and excellent gas separation performance. By optimizing crosslinking density, mass ratio, and the type and content of free ionic liquid, the mechanical and gas separation properties of the DN membrane are improved.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Si-qi Jiang, Qiang Gao, Xi-guang Li, Chao-zhu Deng, Jun Qiu, Xiang-nan Zhu
Summary: A dual-strengthening pretreatment method is proposed to remove PVDF more efficiently and enhance the leaching of LiCoO2. Experimental results show that dual-strengthening pretreatment can effectively remove PVDF and significantly improve the leaching efficiency compared to single pretreatment methods.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Zengchi Hu, Xiaoyu Wang, Xiaohui Zhang, Xue Li, Jiangbin Xia
Summary: The rapid fabrication of high-performance composite membranes based on CMPs using simple and low-cost methods is challenging. In this study, three CMPs-based composite membranes were rapidly fabricated with adjustable size using unidirectional diffusion synthesis. The microstructural design enhanced the rejection rates of the membranes and they showed strong hydrolytic resistance, thermal stability, and acid-base resistance. Electrostatic adsorption and the adjustable microstructures significantly varied the repellence of the membranes to different charged molecules.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Farzaneh Rouhani, Matineh Ayedi, Nasser Safari
Summary: Introducing defects into porous metal-organic frameworks is important for improving their adsorption performance. Quasi-MOFs, an underutilized variant of large-scale, fundamentally deficient MOFs, have been found to have substantial amounts of unsaturated metal sites to offset the drawbacks of MOFs. In this study, a quasi-MOF was produced using a water-stable MOF and demonstrated significantly improved phosphate adsorption capability due to the presence of defect sites.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Valentin Reungoat, Morad Chadni, Louis M. M. Mouterde, Fanny Brunissen, Florent Allais, Helene Ducatel, Irina Ioannou
Summary: This study focuses on the recovery of sinapic acid using liquid-liquid extraction assisted by a hollow fiber membrane contactor from an aqueous feed obtained through the hydrolysis of mustard bran. The screening of solvents of different chemical nature showed that all tested solvents had an extraction efficiency of more than 80% for pH < 5. Four solvents were selected for use in the hollow fiber membrane contactor, and the volatile solvents showed higher mass transfer coefficients compared to non-volatile solvents. The extraction efficiency was intensified by increasing the initial concentration of sinapic acid and the feed-to-solvent ratio. CPME was found to have optimal recovery efficiency at a phase ratio of 8:1, yielding 0.9 g of sinapic acid per liter of CPME used.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Takahiro Sakamoto, Takafumi Hanada, Hayate Sato, Mayu Kamisono, Masahiro Goto
Summary: The emergence of the battery society has led to a high demand for battery metals, resulting in a strain on their supply. This study introduces a novel technique using a hydrophobic deep eutectic solvent (DES) for leaching and recovering battery metals from low-grade nickel laterite ores. The DES enables selective leaching and recovery of the metals, offering a promising pathway for the extraction of critical battery metals.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Rongrong He, Jiarui Chen, Chunyao Zhang, Dan Lu, Lin Zhang, Tao He
Summary: Researcher has developed a method to quantify the charge density in nanofiltration (NF) membrane separation layer and applied it in NF membranes that can separate Mg2+ and Li+. The results showed that overcompensated amine groups played a major role, and there was a linear relationship between charge density and coating bi-layers or PAH layers.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Zhijian Zhang, Min Chen, Zhe Lin, Zhichao Yang, Yafeng Du, Zhihui Chen, Zhenhao Yang, Kongyin Zhao, Ligang Lin
Summary: Membrane technology plays an important role in molecular/ion separation processes, but faces challenges such as membrane fouling. This study introduces a new ion-crosslinking method to fabricate copper alginate hydrogel membranes with improved mechanical strength and antimicrobial capabilities. The membranes exhibit excellent separation performance and enhanced long-term molecule/ion separation through improved anti-swelling properties. Molecular dynamics simulations and life cycle analysis highlight the pore structure and environmental friendliness of the hydrogel membranes. These findings provide valuable insights for developing sustainable hydrogel membranes with stable performance and high separation efficiency.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Dongmei Liu, Aiying Guo, Yanling Qi, Zhixin Ji, Hongjuan Li, Zhiwei Zhang, Xinyue Zhang, Kunze Wu, Aijun Cai
Summary: In this study, a stable magnetic Mg/Mn-layered double oxide-doped biochar composite (MgMnLDO-MBC) was prepared and successfully used for the removal of antibiotics and bacteria from wastewater. The composite exhibited enhanced surface areas, adsorption sites, and free radicals, leading to improved catalytic activity. The effects of different factors on the removal efficiency were evaluated, and the composite showed good reusability.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Feng Wang, Zhaoyong Bian, Yaru Zhang, Wenchao Yu, Qiang Zhang, Hui Wang
Summary: In this study, a nanofibrous layered structure of Ff-Ti3C2Tx-Co3O4 was prepared by self-assembling nanofibrous Co3O4 with lamellar fluorine-free MXene (Ff-Ti3C2Tx). The Ff-Ti3C2Tx-Co3O4 exhibited excellent catalytic activity for degradation, resistant to ionic interference, and maintained high removal efficiency of sulfamethoxazole (SMX) in municipal wastewater. The rapid SMX degradation involved fast electron transfer in redox cycles with PMS and the generation of 1O2 via PMS ->center dot O2 -> 1O2. This work provides new insights into antibiotic degradation mechanisms and electron transfer based on PMS activation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Weipeng He, Jiacheng Luo, Yujie Wu, Tianhao Luo, Chen Tang
Summary: This study comparatively evaluated the role of cationic, anionic, and nonionic polyacrylamides (PAMs) in ballasted flocculation of clay suspensions under different aluminum sulfate (AS) coagulant dosages. The selection of PAMs and AS dosage had a significant influence on the size and shear resistance of ballasted floc aggregates.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Lixian Wang, Lizhi Zhao, Didi Si, Zhixin Li, Huiqin An, Hui Ye, Qingping Xin, Hong Li, Yuzhong Zhang
Summary: Metalloporphyrin-based nanozymes integrated with poly (vinylidene fluoride) membrane show high catalytic activity and reusability for the decolorization of Congo Red dye in continuous flow process.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Yongfei Ma, Chenyu Zeng, Yongzhen Ding, Jiayi Tang, Ondrej Masek, Zhikang Deng, Rui Mu, Zulin Zhang
Summary: In this study, sludge-derived biochar (SBC) was functionalized with various iron salts to enhance its adsorption ability for sulfamethoxazole (SMX) and magnetic collection performance. Ball milling was further employed to treat the optimal iron salt functionalized SBC (MSBC), resulting in ball milled SBC (BMSBC) with improved adsorption performance for SMX. The dominant driving mechanism for SMX adsorption onto BMSBC was confirmed to be multiple physicochemical forces, including 7C-7C conjugation, pore filling, H-bonding, Fe-O complexation, and electrostatic interactions. BMSBC exhibited favorable adsorption ability for SMX in actual waters and could be easily collected within 1 min due to its magnetic sensitivity.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Jinglin Tan, Xiaohui Mao, Wenjihao Hu, Hongbo Zeng
Summary: This study investigates the influence of PDMS chain architectures on surface properties and reveals that PDMS coatings with looped structures exhibit superior hydrophobicity, self-cleaning, and water sliding compared to coatings with linear structures. Additionally, both looped and linear PDMS coated stainless steel mesh/polyester fibers show efficient separation of oil/water mixture.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Wei-Liang Chen, Chih-Chia Cheng, Chien-Hsing Lu, Jem-Kun Chen
Summary: This study designs a novel sandwich-structured capacitor that reduces the absorption time of pollutants using dielectrophoresis force. By coating graphene oxide on polystyrene microspheres as adsorbents and encapsulating them within the capacitor, the adsorption rate is significantly enhanced. Additionally, frequency manipulation allows for the recycling of adsorbents and concentration of dyes, minimizing secondary pollution.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)