Article
Multidisciplinary Sciences
Ankita Srivastava, Lalit Kumar Dangi, Sushil Kumar, Radha Rani
Summary: This study isolated and identified a bacterial strain with the potential to decolorize and degrade Reactive Black 5 (RB5). The strain, identified as Bacillus albus DD1, showed a 98% removal of RB5 within 38 hours under optimum conditions. Kinetic and thermodynamic analyses revealed that the decolorization reaction was a first order non-spontaneous reaction, and the degradation of RB5 occurred through the cleavage of the azo bond.
Article
Energy & Fuels
D. Vijay Kirubakar Raj, M. Renuka Devi, B. Venkatesh, S. Kubera Sampath Kumar, C. Prakash
Summary: This study utilized cellulose nanocrystals extracted from sugarcane bagasse as an effective adsorbent for methylene blue dye in textile wastewater. The adsorption performance and influencing factors were investigated through characterization and dye adsorption experiments.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Chemistry, Physical
Manel BenYahia, Lotfi Sellaoui
Summary: This study investigated the adsorption process of methylene blue on Piacava fibers through physical modeling analysis, revealing the excellent adsorption performance of this adsorbent compared to others in the literature. The results indicated that physical interactions were responsible for the removal of methylene blue dye.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Environmental Sciences
Jacqueline R. Nascimento, Katia C. H. Bezerra, Tiago D. Martins, Elma N. V. M. Carrilho, Christiane de A. Rodrigues, Georgia Labuto
Summary: Fabric dyeing wastewater containing reactive dyes can be effectively removed using various adsorbents, with yeast waste showing the best sorption capacity for the dyes studied. Different adsorbate:adsorbent systems exhibited varying kinetic models and isotherm models to explain the experimental phenomena.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Agricultural Engineering
Muhammad Bilal, Javed Ali, Kinza Bibi, Sher Bahadar Khan, Muhammad Saqib, Rabia Saeed, Rida Javeria, Hizbullah Khan, Kalsoom Akhtar, Esraa M. Bakhsh
Summary: This study utilized activated carbon prepared from Buxus Wallichiana stem by pyrolysis method to remove commonly found pollutants Eriochrome Black T (EBT) and Methylene Blue (MB) from textile and other industries effluents. The prepared activated carbon showed high adsorption capacity for MB and EBT, particularly at low temperatures, and exhibited good reusability.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Microbiology
Sheela Thangaraj, Paul Olusegun Bankole, Senthil Kumar Sadasivam
Summary: This study investigated the azo dye degradation efficiency of adapted Enterobacter hormaechei SKB 16 strain from textile effluent polluted soil, and identified the major roles of azo reductase and laccase enzymes in decolourization. The metabolites were characterized using FT-IR, HPLC, and GC-MS, showing promising potentials for eco-friendly removal of textile azo dyes.
MICROBIOLOGICAL RESEARCH
(2021)
Article
Environmental Sciences
Abarna Krishna Moorthy, Bhuvaneswari Govindarajan Rathi, Satya Prakash Shukla, Kundan Kumar, Vidya Shree Bharti
Summary: The study reveals that Spirulina platensis is more susceptible to the dye compared to Chlorella vulgaris, with the latter showing more tolerance even at higher concentrations. The protein content decreases with the increase in dye concentration.
ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY
(2021)
Article
Materials Science, Textiles
Cosmas Fednand, Pendo Bigambo, Quintino Mgani
Summary: This study investigated potential chemical methods to modify sisal fibers for clothing applications, demonstrating improved mechanical properties and moisture content comparable to other cellulosic fibers. The results suggest a possibility of developing sisal fibers for clothing applications.
JOURNAL OF NATURAL FIBERS
(2022)
Article
Green & Sustainable Science & Technology
N. Vasiraja, R. Saravana Sathiya Prabhahar, A. Joshua
Summary: This study focuses on the adsorption removal of Methylene Blue (MB) dye and Heavy Metals (HM) from textile industry effluent using ZnCl2-activated carbon. The activated carbon was prepared using the Prosopis Juliflora plant and showed excellent adsorption performance. The study also analyzed and evaluated the adsorbent through various experimental and characterization methods. The results demonstrate that the activated carbon has high adsorption capacity for MB dye and heavy metals.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Multidisciplinary Sciences
Yago Neco Teixeira, Francisco Jose de Paula Filho, Vinicius Pereira Bacurau, Jorge Marcell Coelho Menezes, Anderson Zhong Fan, Ricardo Paulo Fonseca Melo
Summary: This study assesses the efficiency of ionic flocculation for the removal of MB from synthetic effluent. The results demonstrate that ionic flocculation is a fast and effective method for MB removal.
Article
Engineering, Environmental
Jyoti Katiyar, Virendra Kumar Saharan
Summary: This research synthesized SmFeO3 and SmFeO3-rGO photocatalysts using an ultrasound-assisted sol-gel technique, and evaluated their photocatalytic degradation efficiency for a degradable dye. The study found that the combined ultrasonication and photocatalytic oxidation strategy achieved high degradation efficiency within a short period of time, and effectively treated textile dyeing effluents.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Engineering, Environmental
Jyoti Katiyar, Virendra Kumar Saharan
Summary: This research synthesized SmFeO3 and SmFeO3-rGO photocatalysts using an ultrasound-assisted sol-gel technique and characterized them through various analytical techniques. The study evaluated the photocatalytic degradation efficiency of Reactive Blue 21 using these synthesized photocatalysts and investigated the influence of operating factors. The results showed that the sonophotocatalytic approach had a good performance for treating dyeing effluents.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Engineering, Environmental
R. P. F. Melo, S. K. S. Carmo, E. L. B. Barros, A. G. Camara, S. K. S. Nunes, E. L. Neto
Summary: The study aimed to remove Disperse Blue 56 dye from synthetic textile effluent using ionic flocculation with surfactant flocs produced from animal/vegetable fat. The results showed that the Elovich model described the kinetics better, indicating that chemical adsorption occurred during the process. This method proved to be efficient with a dye removal efficiency of 87% after 360 minutes of contact.
WATER SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Inorganic & Nuclear
Arun S. Chopade, Laxman S. Walekar, Nagesh D. Kolhe, Abhijit N. Kadam, Harichandra A. Parbat, Vaishali Patil, Mrinmoy Misra, Dattakumar S. Mhamane, Mukund G. Mali
Summary: This study demonstrates the synthesis of morphology guided copper oxide nanostructures based on the concept of Hard Acid and Soft Base (HSAB) and investigates their influence on photocatalytic activity under visible light. Different morphologies of CuO nanomaterials were synthesized using a simple chemical bath approach with various precursors of copper. Characterization of the synthesized samples was conducted using various analytical techniques. The results showed that the morphology of CuO depends on the precursor used, and the CuO synthesized using copper nitrate as a precursor exhibited excellent dye degradation performance under visible light illumination. This study provides a new approach for the synthesis of metal oxides with distinct morphologies for potential photocatalytic applications.
INORGANIC CHEMISTRY COMMUNICATIONS
(2024)
Article
Chemistry, Physical
P. Gnanamozhi, A. Monamary, S. David Jereil, J. Evangeline Pauline, J. Andrew Oswin Ratnam, A. Ganeshkumar, V. Pandiyan, Asma A. Alothman, Razan A. Alshgari, Mani Govindasamy
Summary: The study aims to eliminate toxic dyes in industrial wastewater by using aluminum-substituted zinc oxide nanoparticles before they enter water bodies. The substitution of aluminum modifies the crystal structure and enhances the optical absorption, thereby improving the photocatalytic activity of zinc oxide nanoparticles.
SURFACES AND INTERFACES
(2023)
Article
Engineering, Chemical
Giovanna O. Moreira, Guilherme L. Dotto, Marcos F. P. Moreira
Summary: Thermal diffusivity, an important parameter in heat transfer studies, was determined using a new algorithm based on Talbot's method. The algorithm utilized a one-dimensional Fourier heat conduction equation and a free and open-source program was developed for the calculations. Experimental data showed that the results were strongly influenced by the values of n and omega.
CHEMICAL ENGINEERING COMMUNICATIONS
(2023)
Article
Environmental Sciences
Hercules A. Pereira, Katia da Boit Martinello, Yasmin Vieira, Julia C. Diel, Matias S. Netto, Gabriel D. Reske, Ezequiel Lorenzett, Luis F. O. Silva, Thiago A. L. Burgo, Guilherme Luiz Dotto
Summary: The present study synthesized two new materials, MWCNT-OH-Mag and MWCNT-COOH-Mag, by functionalizing multi-walled carbon nanotubes (MWCNT) with magnetite (Fe3O4) using solution precipitation methodology. These materials were characterized using various techniques and showed effective impregnation and regular distribution of nanoparticles on the surface. Batch studies indicated that MWCNT-OH-Mag exhibited superior adsorption performance for 2,4-D and Atrazine pollutants, with optimal pH conditions of 2 and 6, respectively. The adsorption kinetics reached equilibrium within 30 minutes, and the Sips model accurately described the adsorption isotherms. The synthesized materials demonstrated high stability in aqueous solutions and showed promising potential for water purification through adsorptive separation.
Article
Green & Sustainable Science & Technology
Henrique Gasparetto, Fernanda de Castilhos, Nina Paula Goncalves Salau
Summary: This study evaluated the technical feasibility of replacing n-hexane with p-cymene as a green solvent for soybean oil extraction. Insights into solvent selection were gained through Hansen solubility parameters and COSMO-SAC theory. The equilibrium extraction yields were assessed using response surface methodology, and the kinetics and thermodynamics of the oil extraction were obtained. The results showed that p-cymene is a technically feasible alternative for soybean oil extraction, achieving better yields than n-hexane without affecting the oil quality.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Chemistry, Physical
Henrique Gasparetto, Eder Claudio Lima, Fernando Machado Machado, Guilherme Luiz Dotto, Nina Paula Goncalves Salau
Summary: The removal of reactive red M-2BE dye from aqueous solution using multi-walled carbon nanotubes and powdered activated carbon was studied. Machine learning algorithms were used to model the kinetic adsorption, and the SHapley Additive exPlanations (SHAP) were employed to interpret the effect of each feature on the adsorption capacity. The results showed that the ANFIS model had the best statistical metrics, and temperature had the least contribution in describing the adsorption capacity. This novel application provides important insights for adsorption research.
ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY
(2023)
Article
Engineering, Environmental
Lotfi Sellaoui, Guilherme L. Dotto, Yasmin Vieira, Glaydson S. dos Reis, Marcos L. S. Oliveira, Luis F. O. Silva, Mohammad Rizwan Khan, Salim Manoharadas, Marcelo Godinho, Lucas A. Fantinel, Cesar Aguzzoli, Ronald K. S. Santos
Summary: In this study, the adsorptive properties of pesticides on pinus-based biochar were examined using conventional and statistical physics approaches. The results showed that pinus-based biochar is a highly adsorbent material capable of efficiently removing pesticides from water sources.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Raphael F. Pinheiro, Alejandro Grimm, Marcos L. S. Oliveira, Julien Vieillard, Luis F. O. Silva, Irineu A. S. De Brum, Mu. Naushad, Lotfi Sellaoui, Guilherme L. Dotto, Glaydson S. dos Reis
Summary: This study aimed to develop a sustainable and efficient powdered activated carbon (SP-AC) for the adsorption and recovery of rare earth elements (REEs) from synthetic solutions and real leachate from phosphogypsum. The SP-AC exhibited a highly negatively charged surface which efficiently attracted the positively charged REEs. The kinetic and thermodynamic data suggested favorable, spontaneous, and exothermic adsorption. Pore filling, ion exchange, and surface complexation were proposed as the main mechanisms.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Thermodynamics
Jean Lucca Souza Fagundez, Thompson Diordinis Metzka Lanzanova, Mario Eduardo Santos Martins, Nina Paula Goncalves Salau
Summary: The study evaluated an ethanol-fueled Atkinson cycle PFI SI engine with exhaust rebreathing under 110 different operating conditions. The engine showed higher thermal efficiency and lower combustion temperatures compared to conventional throttled valve strategies. Artificial neural networks were used to train and predict combustion and performance parameters, and the best model accurately predicted outputs with easy-to-measure operating conditions.
INTERNATIONAL JOURNAL OF ENGINE RESEARCH
(2023)
Article
Polymer Science
Joana B. Lourenco, Daniel A. Bertuol, Nina P. G. Salau
Summary: This study assessed the thermal degradation of polymers in health-care waste and proposed fitted models for designing pyrolysis reactors to convert these polymers into energy, mitigating environmental pollution.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Henrique Gasparetto, Ana Carolina Ferreira Piazzi Fuhr, Nina Paula Goncalves Salau
Summary: This study presents a thermo-statistical assessment using soft computing models to describe green soy-bean oil extraction by cyclopentyl methyl ether (CPME). The results suggest higher yields for higher temperatures and lower solvent-to-solid mass ratios. The extraction temperature can be significantly reduced with CPME to achieve the same yield as n-hexane.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Environmental Sciences
Victoria X. Nascimento, Diana Pinto, Sabrina F. Lutke, Maria C. F. da Silva, Fernando. M. Machado, Eder. C. Lima, Luis F. O. Silva, Guilherme L. Dotto
Summary: Sapelli wood sawdust-derived magnetic activated carbon (SWSMAC) was produced through single-step pyrolysis using KOH and NiCl2 as activating and magnetization agents. The obtained SWSMAC was a mesoporous material with good textural properties and exhibited ferromagnetic properties. It effectively adsorbed brilliant blue FCF dye through various interactions.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Maria C. F. da Silva, Sabrina F. F. Lutke, Victoria X. Nascimento, Eder. C. Lima, Luis F. O. Silva, Marcos L. S. Oliveira, Guilherme L. Dotto
Summary: The Brazil nut shell was used as a precursor material for producing activated carbon, which showed excellent adsorption properties for phenol. The activated carbon had a specific surface area of 332 m(2) g(-1) and demonstrated effective phenol removal at an adsorbent dosage of 0.75 g L-1 and pH 6.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Ravi Moreno Araujo Pinheiro Lima, Glaydson Simoes dos Reis, Ulla Lassi, Eder Claudio Lima, Guilherme Luiz Dotto, Helinando Pequeno de Oliveira
Summary: In this study, activated biochar was prepared as the active electrode material for supercapacitors, and its capacitive performance was improved by doping with polypyrrole (PPy). Physicochemical characterization data showed that PPy doping affected the morphology, specific surface area, pore structure, and surface functionalities of the biochar. The biochar-PPy composite exhibited a lower surface area compared to pristine biochar.
C-JOURNAL OF CARBON RESEARCH
(2023)
Article
Environmental Sciences
Angelica F. M. Streit, Patricia Grassi, Fernanda C. Drumm, Luis F. O. Silva, Marcos L. S. Oliveira, Gabriela C. Collazzo, Marcelo Godinho, Daniele Perondi, Guilherme L. Dotto
Summary: In this study, carbonaceous materials were synthesized from floated sludge obtained from a poultry industry wastewater treatment plant. The materials were characterized and studied for methylene blue dye adsorption. The adsorption experiments evaluated the impacts of initial pH solution, adsorbent dosage, kinetics, equilibrium, and thermodynamics. The results showed that the addition of ZnCl2 + lime, followed by pyrolysis and acid leaching, significantly improved the properties of the materials, resulting in increased porosity and surface area. Optimal conditions for MB removal were found to be a natural pH of the solution (8.0) and an AC-II dosage of 0.75 g L-1. Elovich and Sips' models were found to best fit the experimental kinetic and equilibrium data, respectively. The adsorption process was determined to be spontaneous and endothermic based on thermodynamic parameters. The simulated effluent achieved a discoloration efficiency of 67.8%.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Mariadhas Jarvin, Daniel Rani Rosaline, Thamizharasan Gopalakrishnan, Maniveldoss Beaula Ruby Kamalam, Edson Luiz Foletto, Guilherme Luiz Dotto, Savariroyan Stephen Rajkumar Inbanathan
Summary: In this work, TiO2-based nanocomposites containing PANI, PNA, and PIN were synthesized and used as photocatalysts and supercapacitors. The structural, morphological, and optical properties of the materials were investigated using various characterization techniques. The nanocomposites exhibited efficient photocatalytic properties for the degradation of malachite green dye, with TiO2/PNA showing the highest efficiency. TiO2/PNA also showed superior supercapacitor behavior due to its higher electrical conductivity and redox potential.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Physical
Inez A. Barbieri, Marcos L. S. Oliveira, Franciele S. Bruckmann, Theodoro R. Salles, Leonardo Zancanaro, Luis F. O. Silva, Guilherme L. Dotto, Eder C. Lima, Mu. Naushad, Cristiano R. Bohn Rhoden
Summary: This study evaluated the adsorption of zolpidem on magnetic graphene oxide and synthesized magnetic graphene oxide adsorbents for zolpidem removal. The best magnetic nanoadsorbent was found to have a removal percentage of 87.07% at specific pH and temperature conditions. The results suggest that the removal of zolpidem is related to the surface chemistry of the adsorbent rather than the surface area of graphene oxide. The adsorbent showed excellent adsorption efficiency and magnetic behavior, making it a promising material for removing zolpidem from aqueous solutions.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
