Article
Engineering, Environmental
Linghui Wei, Meng Li, Feng Gao, Yibo Zhang, Chengwei Li, Qian Zhang
Summary: Traditional air flotation devices are not effective in treating emulsified wastewater. This study presents a new integrated sequential air flotation device and uses two different demulsifiers to improve the demulsification effect. Optimal operating conditions were determined through experiments and the demulsification mechanism was investigated. The device showed significant improvement in COD removal efficiency in practical wastewater treatment.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Environmental Sciences
G. Pooja, P. Senthil Kumar, G. Prasannamedha, Sunita Varjani, Dai-Viet N. Vo
Summary: This research successfully removed heavy metals from wastewater produced by an electroplating industry using the Dissolved Air Flotation (DAF) treatment process. Under optimized conditions, about 97.39% of metal ions were removed, demonstrating the potential of the DAF process in wastewater treatment.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Review
Engineering, Environmental
G. Pooja, P. Senthil Kumar
Summary: Treating emerging pollutants from industrial effluent is crucial for protecting human wellness and the environment. The flotation process, using surface-active agents as flotation reagents, is an effective and unique method for separating harmful pollutants. This review article discusses different types of surface-active agents used in flotation treatment and their interaction mechanisms with contaminants. Biosurfactants, with their biodegradability, low toxicity, high selectivity, and biocompatibility, offer advantages over chemical surfactants. By integrating surfactants and selecting the appropriate type, the flotation technology can become greener and more environmentally sustainable, enhancing its effectiveness in contaminant remediation.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2023)
Article
Environmental Sciences
Nathalia Santos Araujo, Nathalia Ferreira Souza, Joao Marcos de Lima-Faria, Andressa Tuane Santana Paz, Paulo Sergio Scalize, Simone Maria Teixeira de Saboia-Morais, Humberto Carlos Ruggeri Junior, Edemilson Cardoso da Conceicao
Summary: The study demonstrated that Moringa oleifera Lam. extract has the potential to reduce turbidity, COD, and oil and grease content in wastewater, with lower toxicity compared to aluminum sulfate. It could serve as a sustainable alternative for the treatment of effluents from the cosmetic industry.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Gustavo Lopes Muniz, Magno dos Santos Pereira, Alisson Carraro Borges
Summary: The optimization of coagulant dosage and pH for synthetic dairy wastewater was studied using full factorial design and full factorial design with center point. The results showed that the optimal conditions for removing turbidity and COD were at pH 5.0 with 50 mg L-1 of coagulant, achieving over 98% turbidity removal with PAM and above 72% COD removal, and over 95% turbidity removal with Tanfloc and above 65% COD removal. The addition of center points in the factorial design helped estimate experimental error with fewer runs and did not affect the estimates of the factorial effects.
Article
Engineering, Environmental
Xiaohang Zhang, Xuewei Zhang, Yanping Liu, Qing Zhang, Shipeng Yang, Xuwen He
Summary: The researchers designed a new release device that achieved better wastewater treatment efficiency by optimizing the relationship between geometric structure and performance. The new release device showed significant advantages in removal efficiency and operating cost compared to other devices reported in the literature, and maintained a stable removal rate even after long-term operation.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2021)
Article
Environmental Sciences
Gustavo Lopes Muniz, Alisson Carraro Borges, Teresa Cristina Fonseca da Silva, Rafael Oliveira Batista, Simone Ramos de Castro
Summary: This study demonstrates that chitosan extracted from shrimp waste can serve as a low-cost and eco-friendly coagulant for the treatment of dairy effluent. The optimized chitosan dosage and pH level effectively remove pollutants from the wastewater, showing high efficiency in the removal of COD, turbidity, and UV(254) from synthetic dairy effluent.
ENVIRONMENTAL TECHNOLOGY
(2022)
Article
Environmental Sciences
Nirmal Kumar Shahi, Minsoo Maeng, Donghyun Kim, Taehoon Lee, Seok Dockko
Summary: The study compared the efficiency of dissolved air flotation (DAF) and low-energy flash-pressurized flotation (FPF) in a pilot plant based on organic precursors, different molecular weight fractions, and disinfection byproduct reduction. Both DAF and FPF showed similar removal of dissolved organic carbon (DOC) and chromatographic DOC, but exhibited differences in the removal tendency of organic fractions with different molecular weights. DAF was found to have higher removal of low molecular weight acids compared to FPF, while FPF had a lower energy consumption of approximately 55% compared to DAF.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Green & Sustainable Science & Technology
Libing Chu, Jianlong Wang
Summary: Electron beam radiation technology was successfully applied to treat polymer-containing produced wastewater in the oilfield. The treatment effectively reduced the viscosity, removed oil, and disinfect the bacteria in the wastewater. Free radicals formed during radiation played a major role in the treatment process.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Multidisciplinary
Chao Chen, Hao Yao, Yunlong Jiao, Chong Jia, Sizhu Wu
Summary: This study reports a controllable underwater gas bubble (UGB) transport method on a surface using a magnetism-actuated robot (MAR) and biomimetic laser-ablated lubricant-impregnated slippery surfaces (LA-LISS). By leveraging the MAR and LA-LISS, UGBs can be moved along arbitrary directions and controlled using a tracing magnetic trigger. Experimental results show that UGBs can achieve ultrafast velocities on optimized LA-LISS, and the MAR can steer UGBs on inclined surfaces. Additionally, the MAR can be used for configuring UGB patterns, achieving on-demand coalescence, repairing cutoff switches, and facilitating programmable light-control-light optical shutters.
Article
Engineering, Environmental
Yonglei Wang, Wentao Sun, Luming Ding, Wei Liu, Liping Tian, Yinhe Zhao, Mengyu Zhang, Xuelin Wang
Summary: Posi-CCDAF is a new air flotation process that combines DAF with microbubble surface modification technology, which can effectively remove organic pollutants. The study found that the addition of chitosan can promote the removal efficiency of bubble flocs and improve the removal effect of air flotation.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Linyan Zhang
Summary: The bench-scale integrated system for oilfield wastewater showed high removal efficiencies for chemical oxygen demand, suspended solids, oil, and polyacrylamide under optimized conditions. The final effluent met the grade I national wastewater discharge standard of China.
SEPARATION SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Environmental
Hanna Virpiranta, Samuel Okyere Abayie, Jarmo Makikangas, Mika Puirava, Kirsi Koivula, Tiina Leiviska
Summary: In this study, a comprehensive treatment process was proposed to improve the quality of fish processing wastewater. Modular dissolved air flotation (DAF) and biochar filtration were used to remove oil, grease, suspended solids, and absorb residual nutrients. The DAF treatment effectively removed oil and grease, while the biochar filtration clarified the wastewater and adsorbed residual nutrients. The spent biochar also showed improved properties as a possible soil conditioner.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Environmental Sciences
Hao Wang, Jialing Song, Mengying Yan, Jun Li, Jianmao Yang, Manhong Huang, Ruiyun Zhang
Summary: Reduced pressure distillation was proposed as an effective method to recover reusable waste lignin from textile degumming black liquor. The structure of the recovered material was determined and recycled lignin-based polymers were synthesized. The synthesized polymers showed stable decolorization performance in anionic dye wastewater.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Gabriela Laila de Oliveira, Ana Paula Erbetta Sueitt, Priscila Ribeiro dos Santos, Luan de Souza Leite, Luiz Antonio Daniel
Summary: The study assessed the efficiency of three microalgae harvesting methods in removing various pathogens from water, with the method of flocculation induced by pH modulation followed by sedimentation showing the best removal performance. The findings demonstrated that this method was highly effective in removing bacteria and protozoa.
Article
Energy & Fuels
Francinaldo Leite da Silva, Emilianny Rafaely Batista Magalhaes, Ana Laura Oliveira de Sa Leitao, Everaldo Silvino dos Santos
Summary: In this study, pretreated carnauba straw was used to induce the production of cellulases and xylanases by Trichoderma reesei CCT-2768, resulting in higher enzyme yields. The crude extract produced was applied in the enzymatic hydrolysis of sugarcane bagasse, achieving an efficiency of 86.96%.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Biochemical Research Methods
Patricia Maria Rocha, Ana Carmen dos Santos Mendes, Sergio Dantas de Oliveira Junior, Carlos Eduardo de Araujo Padilha, Ana Laura Oliveira de Sa Leitao, Cleitiane da Costa Nogueira, Gorete Ribeiro de Macedo, Everaldo Silvino dos Santos
Summary: The study evaluated the production of surfactin by Bacillus subtilis UFPEDA 438 using sugarcane molasses as a substrate. It found that the biosurfactant production and characteristics were significantly influenced by the cultivation conditions, with the kinetics of formation being strongly affected. The results indicated that Bacillus subtilis UFPEDA 438 is a good producer of biosurfactant and sugarcane molasses is a viable substrate for surfactin production.
PREPARATIVE BIOCHEMISTRY & BIOTECHNOLOGY
(2021)
Article
Environmental Sciences
Emilianny R. B. Magalhaes, Jose D. B. Costa Filho, Carlos E. A. Padilha, Francinaldo L. Silva, Magna A. S. B. Sousa, Everaldo S. Santos
Summary: This study investigated the performance of an activated sludge system in treating synthetic produced water under different initial conditions, showing high removal efficiency of oil and grease and salinity. The effluent toxicity on seed germination and plant growth was evaluated, highlighting the potential reuse of treated produced water for plant irrigation.
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART B-PESTICIDES FOOD CONTAMINANTS AND AGRICULTURAL WASTES
(2021)
Article
Biochemical Research Methods
Catherine Teixeira de Carvalho, Wildson Bernardino de Brito Lima, Fabio Goncalves Macedo de Medeiros, Julia Maria de Medeiros Dantas, Carlos Eduardo de Araujo Padilha, Everaldo Silvino dos Santos, Gorete Ribeiro de Macedo, Francisco Caninde de Sousa Junior
Summary: This study aimed to evaluate the conditions for lactose hydrolysis from coalho cheese whey using beta-galactosidase produced by Kluyveromyces lactis immobilized with sodium alginate. Results showed that immobilization with 1% sodium alginate yielded the best results, with high efficiency and stable performance in simulated gastrointestinal conditions. The immobilized enzyme showed promising potential for industrial applications.
PREPARATIVE BIOCHEMISTRY & BIOTECHNOLOGY
(2021)
Article
Engineering, Chemical
Marcelo da Silva Pedro, Luiz Andre Fialho Oliveira, Carlos Eduardo de Araujo Padilha, Everaldo Silvino dos Santos, Jackson Araujo de Oliveira, Domingos Fabiano de Santana Souza
Summary: The study investigated the effects of flow patterns on the partitioning of biomolecules using microdevices in ATPE. Results showed that the droplet flow pattern exhibited better recovery and partition coefficient for BSA, while for ampicillin, the extraction performance was almost independent of the flow patterns.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Food Science & Technology
Raphael Lucas Jacinto Almeida, Newton Carlos Santos, Carlos Eduardo Padilha, Shenia Santos Monteiro, Everaldo Silvino dos Santos
Summary: The study investigates the effects of different hydrothermal pretreatments on red rice starch, showing that autoclave pretreatment can effectively save energy and reduce thermal damage while shortening drying time. The results provide valuable information for designing new equipment for drying processes.
JOURNAL OF FOOD PROCESSING AND PRESERVATION
(2021)
Article
Biochemical Research Methods
Wilza Kimilly Vital de Paiva, Waleska Rayane Dantas Bezerra de Medeiros, Cristiane Fernandes de Assis, Everaldo Silvino dos Santos, Francisco Caninde de Sousa Junior
Summary: Hyaluronic acid (HA) is a biopolymer with various applications in different fields. Microbial HA exhibited activity in antioxidant capacity, while the purification method used in animal products was more effective.
PREPARATIVE BIOCHEMISTRY & BIOTECHNOLOGY
(2022)
Article
Agricultural Engineering
Petrucia Karine Santos de Brito Bezerra, Otavio Lima da Silva, Sergio Dantas de Oliveira Junior, Carlos Eduardo de Araujo Padilha, Everaldo Silvino dos Santos
Summary: The study found that alkaline and two-stage acid-alkaline pretreatments were more suitable for cellulase recycling, achieving higher cellulase desorption recovery rates. Reusing cellulases bound to solid residue and dissolved in the supernatant can reduce enzyme usage and maintain satisfactory sugar yields in subsequent hydrolysis cycles.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Engineering, Chemical
Raphael Lucas Jacinto Almeida, Newton Carlos Santos, Carlos Eduardo Padilha, Mercia Melo de Almeida Mota, Virginia Mirtes de Alcantara Silva, Anastacia Maria Mikaella Campos Nobrega Andre, Everaldo Silvino dos Santos
Summary: The study evaluates the application of pulsed electric field (PEF) on red rice starch and investigates the effects of drying temperature on its thermodynamic and thermal properties. The findings show that PEF can reduce the costs of the drying and gelatinization process, and decrease the environmental impacts generated by high energy consumption.
JOURNAL OF FOOD PROCESS ENGINEERING
(2022)
Article
Engineering, Chemical
Raphael Lucas Jacinto Almeida, Newton Carlos Santos, Tamires dos Santos Pereira, Shenia Santos Monteiro, Lucas Rodolfo Inacio da Silva, Raphael da Silva Eduardo, Israel Luna Alves, Everaldo Silvino dos Santos
Summary: This study evaluated the impact of ultrasound high-intensity low-frequency on the extraction and modification of starch from achachairu seeds. The results showed that ultrasound-assisted extraction achieved higher yield and starch content, and significantly affected the physical-chemical, physical, morphological, thermal properties of the starch.
JOURNAL OF FOOD PROCESS ENGINEERING
(2022)
Article
Energy & Fuels
Vitor Troccoli Ribeiro, Amanda Castro Campolina, Willyan Araujo da Costa, Carlos Eduardo de Araujo Padilha, Jose Daladie Barreto da Costa Filho, Ana Laura Oliveira de Sa Leitao, Juliene da Camara Rocha, Everaldo Silvino dos Santos
Summary: The pretreatment step plays a major role in ethanol production. This study used steam explosion and alkaline pretreatment on green coconut fiber to improve ethanol yield. The sequential SE/alkaline pretreatment was successful in increasing sugar production and ethanol concentration.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Multidisciplinary Sciences
Sueilha F. A. Paula, Bruna M. E. Chagas, Maria I. B. Pereira, Adriano H. N. Rangel, Cristiane F. C. Sassi, Luiz H. F. Borba, Everaldo S. Santos, Estefani A. Asevedo, Fabiana R. A. Camara, Renata M. Araujo
Summary: This study reports the energetic characterization of Spirulina platensis biomasses cultivated under autotrophic and mixotrophic conditions, using cheese whey waste. The results show that it is possible to decrease the formation of nitrogen compounds by manipulating growth conditions and temperature. The biomass produced by S. platensis can be used for the production of high-quality bio-oil and valuable chemicals.
Article
Energy & Fuels
Millena Cristiane de Medeiros Bezerra Jacome, Carlos Eduardo de Araujo Padilha, Murilo Ricardo do Nascimento Arrais, Ana Laura Oliveira de Sa Leitao, Francisco Caninde de Sousa Junior, Everaldo Silvino dos Santos
Summary: This study proposes a valorization scheme for mangaba residue to obtain polygalacturonases, antioxidant compounds, and active chitosan films. The extraction of mangaba residue with an ethanolic solution followed by solid state fermentation (SSF) of Aspergillus niger IOC 4003 resulted in high polygalacturonase productivity and pH-tolerant polygalacturonase. The residue from SSF was used for alkaline lignin extraction, and addition of alkaline lignin to chitosan films led to changes in antioxidant activity and permeability.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Green & Sustainable Science & Technology
Lars odegaard Bentsen, Narada Dilp Warakagoda, Roy Stenbro, Paal Engelstad
Summary: This study investigates uncertainty modeling in wind power forecasting using different parametric and non-parametric methods. Johnson's SU distribution is found to outperform Gaussian distributions in predicting wind power. This research contributes to the literature by introducing Johnson's SU distribution as a candidate for probabilistic wind forecasting.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Xing Liu, Qiuchen Wang, Yunhao Wen, Long Li, Xinfang Zhang, Yi Wang
Summary: This study analyzes the characteristics of process parameters in three lean gas ethane recovery processes and establishes a prediction and multiobjective optimization model for ethane recovery and system energy consumption. A new method for comparing ethane recovery processes for lean gas is proposed, and the addition of extra coolers improves the ethane recovery. The support vector regression model based on grey wolf optimization demonstrates the highest prediction accuracy, and the multiobjective multiverse optimization algorithm shows the best optimization performance and diversity in the solutions.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Cairong Song, Haidong Yang, Xian-Bing Meng, Pan Yang, Jianyang Cai, Hao Bao, Kangkang Xu
Summary: The paper proposes a novel deep learning-based prediction framework, aTCN-LSTM, for accurate cooling load predictions. The framework utilizes a gate-controlled multi-head temporal convolutional network and a sparse probabilistic self-attention mechanism with a bidirectional long short-term memory network to capture both temporal and long-term dependencies in the cooling load sequences. Experimental results demonstrate the effectiveness and superiority of the proposed method, which can serve as an effective guide for HVAC chiller scheduling and demand management initiatives.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Zhe Chen, Xiaojing Li, Xianli Xia, Jizhou Zhang
Summary: This study uses survey data from the Loess Plateau in China to evaluate the impact of social interaction on the adoption of soil and water conservation (SWC) technology by farmers. The study finds that social interaction increases the likelihood of farmers adopting SWC, and internet use moderates this effect. The positive impact of social interaction on SWC adoption is more pronounced for farmers in larger villages and those who join cooperative societies.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Chenghua Zhang, Yunfei Yan, Kaiming Shen, Zongguo Xue, Jingxiang You, Yonghong Wu, Ziqiang He
Summary: This paper reports a novel method that significantly improves combustion performance, including heat transfer enhancement under steady-state conditions and adaptive stable flame regulation under velocity sudden increase.
JOURNAL OF CLEANER PRODUCTION
(2024)
