Article
Engineering, Environmental
Aaronn Avit Ajeng, Rosazlin Abdullah, Tau Chuan Ling, Salmah Ismail
Summary: Biochar has been found to be an effective carrier for microorganisms due to its physicochemical properties and microenvironment. In this study, the adhesion behavior of Bacillus salmalaya 139SI and Bacillus amyloliquefaciens NBRC 15535 on oil palm kernel shell (OPKS) biochar was investigated. The pseudo-second-order kinetics model accurately described the adhesion process, and the adhesion equilibrium was reached after 80 minutes with a cell concentration of 10^8 CFU/g. Field Emission Scanning Electron Microscopy images revealed the formation of microcolonies and a biofilm structure on the biochar surface, and electron dispersive spectroscopy analysis suggested that bacteria attached to mineral-rich regions on the biochar surface, which may enhance their survival.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
Jesus Rodriguez-Iglesias, Lara Alcala, Laura Megido, Leonor Castrillon
Summary: In this study, ion exchange technology was used to reduce the fluoride content in effluent from a coke wastewater treatment plant, with Al-doped TP260 resin showing better removal efficiency compared to Al-doped TP207 resin. Kinetic and isotherm studies confirmed the optimal conditions for the ion exchange process, indicating higher sorption capacity for the Al-doped TP260 resin.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Engineering, Chemical
Dmitriy Berillo, Aknazar Arysbek
Summary: This study demonstrates the effective removal of silver nanoparticles (AgNPs) using a chitosan-based cryogel, which has potential applications in agriculture, water treatment, and industrial plants. The adsorbent is economically viable, has high affinity toward metal nanoparticles, is biodegradable and biocompatible, and displays good removal efficiency of nanoparticles.
Article
Energy & Fuels
Mohd Hardyianto Vai Bahrun, Awang Bono, Muhammad Abbas Ahmad Zaini, Norasikin Othman, Agus Saptoro
Summary: The dynamic performances of various adsorbents in removing lead ion, Pb(II), from aqueous solution in an industrial-sized packed bed column were investigated through numerical simulation. Among the different adsorbents, apricot stone activated carbon showed the highest adsorptive performance, suggesting a cheaper and environmental-friendly alternative. A simple analysis method was formulated for comparing the adsorptive performance using information from batch experiments.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Chemistry, Inorganic & Nuclear
G. Bharath Balji, A. Surya, P. Govindaraj, G. Monisha Ponsakthi
Summary: This study examines the adsorption capacity of a novel adsorbent BSBFA in removing synthetic dyes from polluted water, demonstrating its effectiveness and cost-efficiency.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
G. Bharath Balji, A. Surya, P. Govindaraj, G. Monisha Ponsakthi
Summary: A novel adsorbent, Brick Sand Blended Fly Ash (BSBFA), was developed for efficient removal of synthetic dyes. The adsorption performance and mechanism of BSBFA were investigated through characterization studies. The results showed that BSBFA had high adsorption capacities for both Malachite Green (MG) and Methyl Violet (MV), with MG exhibiting higher adsorption capacity than MV, indicating the sustainability of BSBFA as a dye removing agent.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Environmental Sciences
Jayaprakash Madhu, Venkatraman Madurai Ramakrishnan, Agilan Santhanam, Muthukumarasamy Natarajan, Balraju Palanisamy, Dhayalan Velauthapillai, Nguyen Thuy Lan Chi, Arivalagan Pugazhendhi
Summary: In this study, zeolite sodalite SOD, LTA, and FAU of different structures were successfully synthesized. The morphological analysis showed that the samples exhibited different shapes. The N2 adsorption-desorption studies indicated that the synthesized samples corresponded to adsorption types IV and I. CO2 adsorption experiments revealed that the zeolite FAU had the highest adsorption capacity. The synthesized zeolites were found to have a large electric field gradient, allowing them to strongly adsorb CO2 molecules.
ENVIRONMENTAL RESEARCH
(2022)
Article
Engineering, Chemical
C. Nirmala Rani
Summary: This study investigates the adsorption of caffeine from aqueous solutions using sawdust as a natural, eco-friendly, and low-cost adsorbent. The effects of various operating parameters on the adsorption process were examined in detail. The results indicate that the maximum removal efficiency of caffeine can reach 94.5% under optimized conditions. The suitability of different adsorption isotherm models was also analyzed, and the Freundlich model showed better fit to the experimental data. Additionally, response surface methodology was employed to analyze the experimental data, demonstrating a good agreement between the experimental and predicted results.
DESALINATION AND WATER TREATMENT
(2022)
Article
Water Resources
Sharon K. K. Pereira, Srinivas Kini, Balakrishna Prabhu, Gautham P. P. Jeppu
Summary: Analytical isotherm models are commonly used for modeling adsorption studies, but most of them do not consider the pH-dependent adsorption. The modified Langmuir-Freundlich (MLF) isotherm model developed by us can simulate pH-dependent adsorption. In this study, the MLF model was extended to other metal ions by considering chromium adsorption datasets on different adsorbents.
APPLIED WATER SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Rahmi, Muhammad Iqhrammullah, Ulfa Audina, Husni Husin, Haya Fathana
Summary: A film adsorbent OC/Chi-EDTA was prepared from OPEFB-based charcoal through a simple phase inversion technique, showing advantageous properties for Cd (II) adsorptive removal. The material exhibited high tensile strength, adsorption capacity, and thermal stability, with successful adsorption mechanisms of electrostatic attraction and complexation for Cd (II) uptake.
SUSTAINABLE CHEMISTRY AND PHARMACY
(2021)
Article
Chemistry, Medicinal
Syed Najmul Hejaz Azmi, Wafa Mustafa Al Lawati, Umaima Hamed Abdullah Al Hoqani, Ekhlas Al Aufi, Khalsa Al Hatmi, Jumana Salim Al Zadjali, Nafisur Rahman, Mohd Nasir, Habibur Rahman, Shah A. Khan
Summary: A citric-acid-modified Moringa peregrina leaf substrate was prepared and studied as an effective adsorbent for the adsorptive removal of citalopram HBr. Under optimized conditions, 82.59% of CTM was removed successfully, and various models explained the adsorption data well.
Article
Energy & Fuels
M. Lenin Sundar, A. Aravindan, S. Sujatha, S. Mahendran, G. Kalyani, D. Zunaithur Rahman, A. Vijayakumar, M. Senthil Kumar
Summary: This study investigated the potential of biochar synthesized from Caulerpa scalpelliofrmis, a marine seaweed, in the decolorization of Reactive Yellow 81. The results of batch experiments and continuous packed bed column experiments showed that biochar could effectively adsorb Reactive Yellow 81 under optimum conditions. Further studies revealed the adsorption mechanism and kinetics behavior.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Environmental Sciences
Mahmuda Akter, Noriko Hirase, Md. Tajuddin Sikder, Md. Mostafizur Rahman, Toshiyoki Hosokawa, Takeshi Saito, Masaaki Kurasaki
Summary: Lead (Pb) is a highly toxic heavy metal that can enter the biological system through the food chain, and lead ion (Pb (II)) can be released into the environment from natural and anthropogenic sources. Among various remediation techniques, adsorption is considered effective for its economic and versatile properties. The study showed that the CS-AC-PVA composite beads have better adsorption capacity for Pb (II) compared to lone CS, AC, and CS-AC beads, with a 44% increase compared to CA-AC beads. The adsorption capacity of CS-AC-PVA beads for Pb (II) was highest at 25 degrees C, following the Freundlich isotherm model with increasing concentrations and decreasing temperatures. This demonstrates the potential of CS-AC-PVA composite beads as an adsorbent for environmental remediation of Pb (II) from aqueous solutions.
WATER AIR AND SOIL POLLUTION
(2021)
Article
Physics, Multidisciplinary
Aaronn Avit Ajeng, Rosazlin Abdullah, Anggra Junia, Beng Fye Lau, Tau Chuan Ling, Salmah Ismail
Summary: The study found that PKS biochar is a suitable carrier for B. cereus inoculation, with high adsorption capacity and rate, achieving 90% maximum adsorption within 60 minutes. It is suitable for two isotherm models and shows conformity to Elovich model in kinetic study.
Article
Environmental Sciences
Wyllerson Evaristo Gomes, Amanda Arthuzo Correa, Thaina Godoy Beatto, Augusto Etchegaray, Alessandra Borin Nogueira, Renata Kelly Mendes
Summary: This study demonstrates the efficiency of using wash waters from lipopeptide production as a remediation strategy for treating urban water contaminated with p-cresol. The method was monitored using a biosensor and showed successful removal of p-cresol using the surfactin-rich wash waters.
ENVIRONMENTAL TECHNOLOGY
(2023)
Article
Environmental Sciences
Lorenzo Rambaldo, Hector Avila, Monica Escola Casas, Miriam Guivernau, Marc Vinas, Rosa Trobajo, Javier Perez-Burillo, David G. Mann, Belen Fernandez, Carme Biel, Luigi Rizzo, Josep M. Bayona, Victor Matamoros
Summary: Groundwater pollution has increased due to intensified agricultural and livestock activities, leading to a reduction in freshwater resources. This study investigated a green technology using a photobioreactor and cork filter to remove pollutants from groundwater. The results showed that the technology was moderately effective in removing nitrates, antibiotics, and pesticides, but its efficiency decreased with shorter hydraulic retention time, with pesticides being the most affected compounds.
Article
Engineering, Environmental
Gulnara Maniakova, Maria Inmaculada Polo-Lopez, Isabel Oller, Maria Jesus Abeledo-Lameiro, Sixto Malato, Luigi Rizzo
Summary: The effect of different dosing times of Fe:EDDS and H2O2, as well as different concentrations of Fe:EDDS in the sequential treatment of sunlight/H2O2 followed by sunlight/H2O2/Fe:EDDS at circumneutral pH, was investigated for the first time. The study focused on the removal of contaminants of emerging concern (CECs) and bacteria in urban wastewater treatment plant effluents. The results showed that the sequential treatment was able to remove 60% of the target CECs and inactivate bacteria below the detection limit.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Chemical
Antonio Faggiano, Maria Ricciardi, Antonino Fiorentino, Raffaele Cucciniello, Oriana Motta, Luigi Rizzo, Antonio Proto
Summary: The study developed a compact unit for greywater treatment by combining physical foam fractionation and photo-driven advanced oxidation. Evaluation of different parameters showed that the combination of foam fractionation with H2O2/Fe-IDS/UV-C was effective in COD removal and using sunlight as a light source for sustainability.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Antonio Faggiano, Marco De Carluccio, Antonino Fiorentino, Maria Ricciardi, Raffaele Cucciniello, Antonio Proto, Luigi Rizzo
Summary: This study investigated the use of UVC or sunlight assisted photo-Fenton like process (PFI) using iron(III) iminodisuccinate (Fe-IDS) as catalyst as a post-treatment method for olive mill wastewater (OMW) in a Moving Bed Biofilm Reactor (MBBR). The MBBR effectively reduced BOD5 and COD by 97% and 91% respectively, but was less effective (57%) in total phenols (TPHs) removal. PFI was optimized for TPHs removal, with UVC driven PFI achieving higher removal compared to sunlight driven PFI. Under optimized conditions, the UVC driven process achieved a TPHs removal of 99% with a final concentration of 0.07±0.01 mg/L.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Environmental Sciences
Marco De Carluccio, Raffaella Sabatino, Ester M. Eckert, Andrea Di Cesare, Gianluca Corno, Luigi Rizzo
Summary: The impact of Fenton oxidation (FO) and Air stripping (AS) pre-treatments on the bacterial community of a biological activated sludge (B-AS) process for the co-treatment of mature landfill leachate (MLL) and urban wastewater (UWW) was assessed. The combination of FO and AS allowed for successful operation of the B-AS and effective treatment of MLL, by improving biodegradability and reducing ammonia concentration. For bacterial community shifting, BOD5/COD was found to be the key factor. The results suggest that a suitable combination of pre-treatments can reduce the negative effect of MLL on the B-AS process and shorten the acclimatization time for autochthonous bacteria.
Article
Environmental Sciences
Ivano Spiniello, Marco De Carluccio, Stefano Castiglione, Enzhe Amineva, Natalia Kostryukova, Angela Cicatelli, Luigi Rizzo, Francesco Guarino
Summary: The sustainable treatment of landfill leachate poses a significant challenge. This study investigates a green solution by combining a hybrid constructed wetland with a solar photo-Fenton process. A multi-layered wetland pilot plant was designed, incorporating different substrates and plant species. The wetland was functionalized with compost tea solution to provide nutrients for plants and enhance microbial biodiversity. The efficiency of the process was evaluated using real landfill leachate, with removal rates of 75-95% observed for various parameters. Further polishing of the effluent was achieved through the solar photo-Fenton process, resulting in an additional 49% COD removal. The combined system allows for meeting the required limits by adjusting the process parameters according to the final use of the effluent.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Environmental
Pellegrino La Manna, Marco De Carluccio, Patrizia Iannece, Giovanni Vigliotta, Antonio Proto, Luigi Rizzo
Summary: This study investigated the application of Fe3+-iminodisuccinic acid (Fe:IDS) based solar photo Fenton (SPF) in quaternary treatment of real urban wastewater and compared it with Fe3+-ethylenediamine-N,N'-disuccinic acid (Fe:EDDS) for the first time. Fe:EDDS was more effective in pharmaceuticals removal, while Fe:IDS was more effective in pathogens inactivation. Fe:IDS SPF alone is an attractive option for urban wastewater reuse.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Chemistry, Physical
Sirine Ben Ayed, Lamjed Mansour, Vincenzo Vaiano, Abdel Halim Harrath, Fadhila Ayari, Luigi Rizzo
Summary: In this study, magnetic nanocomposite beads were prepared by incorporating magnetic Fe3O4 nanoparticles and natural iron ore (NIO) into sodium calcium alginate material, and were investigated as catalysts for the degradation of Nova-cron blue (NB) dye using Fenton and photo-Fenton processes. The as-prepared catalyst showed great photocatalytic behavior, and was successfully reused in six consecutive photo-Fenton tests. This catalyst has the advantages of low cost, environmental friendliness, non-toxicity, magnetic separability, and stability, making it a potential candidate for wastewater treatment applications.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Article
Green & Sustainable Science & Technology
Gulnara Maniakova, Maria Inmaculada Polo Lopez, Isabel Oller, Sixto Malato, Luigi Rizzo
Summary: Solar driven advanced oxidation processes (S-AOPs) have been successfully studied as tertiary and quaternary treatment of urban wastewater. However, their application has been hindered by the lack of comparison data with consolidated technologies and evaluation of environmental impact. This study compared the environmental impact of a new S-AOP called sequential treatment (ST) with sunlight/H2O2 and solar photo-Fenton (SPF) to pilot scale ozonation (O-3) treatment through Life Cycle Assessment (LCA). The results showed that ST had a better overall environmental performance compared to O-3, making it a more sustainable solution for small urban wastewater treatment plants.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Environmental Sciences
Antonio Faggiano, Marco De Carluccio, Francesco Cerrato, Carlos Augusto Garcia Junior, Antonio Proto, Antonino Fiorentino, Luigi Rizzo
Summary: This study used response surface methodology (RSM) to determine the optimal operating conditions of the Fenton process as a pre-treatment for landfill leachate (LL). The aim was to reduce the organic content and optimize the BOD5:TN:TP ratio. The variables Fe2+ and H2O2 concentrations significantly affected the responses, with oxidation mechanisms dominating over coagulation. The optimal conditions were Fe2+ concentration of 4262 mg/L, H2O2 concentration of 5104 mg/L (H2O2/Fe2+ molar ratio = 2), with COD, BOD5, TN, and TP removals of 70%, 67%, 84%, and 96% respectively, and improved BOD5:TN:TP ratio of 100:6:1. Furthermore, this approach minimized sludge formation and provided a useful tool for LL pre-treatment.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Environmental
Gulnara Maniakova, Luigi Rizzo
Summary: In this study, different advanced oxidation processes were compared for the degradation of pharmaceuticals and inactivation of pathogens in municipal wastewater. The results showed that UVC/H2O2 process was more efficient in degrading the pharmaceuticals and killing the pathogens in a shorter time compared to O3 and photo-Fenton process.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Antonino Fiorentino, Paula Soriano-Molina, Maria Jesus Abeledo-Lameiro, Irene de la Obra, Antonio Proto, Maria Inmaculada Polo-Lopez, Jose Antonio Sanchez Perez, Luigi Rizzo
Summary: The solar photo-Fenton process was investigated for inactivation of E. coli, removal of antibiotic trimethoprim (TMP), and antibiotic resistance genes (ARGs) from urban wastewater. The results showed that acidic conditions were effective for bacteria inactivation, but less effective for TMP removal. Neutral pH conditions were better for TMP removal, but slower for bacteria inactivation. Both acidic and neutral pH conditions resulted in only slight removal of ARGs.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Review
Engineering, Environmental
Luigi Rizzo
Summary: This review discusses the challenges in the tertiary treatment of urban wastewater and the advancements of homogeneous photodriven advanced oxidation processes (HP-AOPs) in addressing these challenges. It analyzes and discusses the differences between solar- and UV-driven HP-AOPs, acidic vs. neutral pH photo-Fenton, as well as homogeneous and heterogeneous photodriven AOPs. The review also provides recommendations for selecting model pollutants and validating results under realistic conditions.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2022)
Article
Engineering, Environmental
Antonietta Mancuso, Nicola Morante, Marco De Carluccio, Olga Sacco, Luigi Rizzo, Marco Fontana, Serena Esposito, Vincenzo Vaiano, Diana Sannino
Summary: TiO2-based photocatalysts doped with Fe and/or Cr were evaluated as a possible solution for the treatment of real olive oil mill wastewater. The simultaneous doping of TiO2 lattice with Fe and Cr improves the optical absorption into the visible region. Fe-Cr-TiO2 showed the best photocatalytic performance when H2O2 was added. Fe-TiO2 showed the best activity when used as a post-treatment method.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Gulnara Maniakova, Irene Salmeron, Marina Aliste, Maria Inmaculada Polo-Lopez, Isabel Oller, Sixto Malato, Luigi Rizzo
Summary: Solar photo-Fenton (SPF) and ozonation were compared for the degradation of emerging contaminants in urban wastewater. Ozonation had a faster degradation rate, while SPF had lower toxicity levels. Chronic toxicity was observed even after 80% removal of the contaminants by both methods.
CHEMICAL ENGINEERING JOURNAL
(2022)