Article
Chemistry, Physical
Chrysanthi Berberidou, Petros Kokkinos, Ioannis Poulios, Dionissios Mantzavinos
Summary: The research findings suggest that there is an optimal concentration of Fenton reagents for degrading clopyralid, excessive concentrations may have detrimental effects. Catalytic degradation under visible light is as effective as under UV-A, highlighting the potential of using natural sunlight as a renewable energy source. The treatment method shows promising perspectives in upgrading water and liquid waste quality containing pesticides.
Article
Engineering, Chemical
Ana Paula Floriano Santos, Fabio Gozzi, Adriana Evaristo de Carvalho, Keila Roberta Ferreira de Oliveira, Anderson Rodrigues Lima Caires, Rodrigo Pereira Cavalcante, Rebeca Fabbro Cunha, Debora Antonio da Silva, Diego Roberto Vieira Guelfi, Lucas de Melo da Silva, Thalita Ferreira da Silva, Gleison Antonio Casagrande, Silvio Cesar de Oliveira, Amilcar Machulek Junior
Summary: This study investigated the use of solar photo-Fenton-like processes to degrade sanitary landfill leachates. The results showed that using Fe3+ as a coagulant combined with the photo-Fenton-like method effectively removed COD and DOC, improving the biodegradability and reducing the toxicity of the effluent. This method holds promising potential as a treatment method for wastewater.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Review
Environmental Sciences
Santosh D. Ashtaputrey, Pratibha S. Agrawal
Summary: Ionic liquids (ILs) are unique materials that can be used as solvents in industries, but their presence in wastewater can cause pollution. Finding efficient removal methods is crucial, and advanced oxidation process (AOP) is a significant technique. This review paper discusses the application and development of AOPs for the degradation of ILs and presents future perspectives.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Rodrigo Poblete, Carlos Anibal Rodriguez, Claudia Carrasco, Jose Herrera, Ricardo Salazar-Gonzalez
Summary: This study investigated the application of copper as a catalyst in solar photo-Fenton-like processes for landfill leachate treatment. The results showed that a copper sheet with a mass of 2.7 g, a solution pH of 5, and a 10% concentration of landfill leachate achieved the highest removal of organic matter. Photolysis using solar UV had limited removal efficiency for humic acid and COD, while the use of a copper sheet under Fenton-like conditions resulted in significant removal of humic acid and COD. The inhibition rate of biological activated sludge caused by raw landfill leachate decreased from 29.1% to 0.23% after adjustment to pH 7.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Review
Environmental Sciences
Enric Brillas
Summary: Ibuprofen is a widely prescribed drug with potential harmful effects on human health, as it can be found in various types of wastewater and drinking water. Conventional treatments are inefficient in removing IBP, leading to the development of advanced oxidation processes to mitigate its impact.
Article
Environmental Sciences
I Salmeron, I Oller, S. Malato
Summary: In the past two decades, the application of electrochemical processes for wastewater treatment has significantly increased. However, most studies have focused on lab-scale systems testing. This study aims to evaluate the performance of electrochemical treatments in actual matrices, showing higher degradation rates in more complex and saline matrices.
Article
Chemistry, Physical
Norma A. Ramos-Delgado, Diego A. Pino-Sandoval, Khirbet Lopez-Velazquez, Christos Englezos, Minerva Villanueva-Rodriguezc, Miguel A. Gracia-Pinilla, Nicolas D. Boscher, Han J. G. E. Gardeniers, Arturo Susarrey-Arce
Summary: This study demonstrates the degradation of acetaminophen in water using Fe-BiOBr and solar photo-Fenton process. The results show that Fe-BiOBr is capable of efficiently degrading acetaminophen under mild pH conditions and natural sunlight irradiation.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Maryam Behrouzeh, Mohammad Mehdi Parivazh, Elnaz Danesh, Mohammad Javad Dianat, Mohsen Abbasi, Shahriar Osfouri, Amir Rostami, Mika Sillanpaa, Mahdieh Dibaj, Mohammad Akrami
Summary: This study focuses on the treatment of organic compounds DMSO and DMAC in wastewater using advanced oxidation processes (AOPs). By studying various AOPs and analyzing the effects of operating parameters, it was concluded that the Electro-Fenton process is the most suitable method for the efficient removal of DMSO and DMAC.
ARABIAN JOURNAL OF CHEMISTRY
(2022)
Article
Acoustics
Antonis Maroudas, Pavlos K. Pandis, Anastasia Chatzopoulou, Lambros-Roland Davellas, Georgia Sourkouni, Christos Argirusis
Summary: In this study, ultrasound irradiation, photocatalysis with TiO2, Fenton/Photo-Fenton reaction, and their combinations were investigated for the decolorization of industrial dyes to study their synergy. The experiments showed that the combination of different frequencies of ultrasound with the Photo-Fenton reaction can significantly enhance the degradation of azo dyes.
ULTRASONICS SONOCHEMISTRY
(2021)
Article
Chemistry, Applied
Osmin Aviles-Garcia, Jaime Espino-Valencia, Arisbeht Mendoza-Zepeda, Kingsley Donkor, Sharon Brewer, Rubi Romero, Reyna Natividad
Summary: In this study, the degradation of beta-blocker metoprolol was achieved through photocatalysis and photo-Fenton catalyzed by doped TiO2. The addition of Cu/TiO2 showed the highest degradation and mineralization extent, while doping also reduced the energy band gap of TiO2.
Article
Environmental Sciences
Sangeeth John, Sasikaladevi Rathinavelu, Sagayanathan Monica Susai Mary, Indumathi Manivannan Nambi, Sridharan Moorthy Babu, Tiju Thomas, Shubra Singh
Summary: This study proposes an efficient strategy for degrading the persistent antibiotic contaminant, ciprofloxacin (CIP). A hybrid advanced oxidation process (HAOP) is tailored with a synergy effect between photocatalysis and photo-Fenton catalysis on a zinc ferrite-titania heterostructured composite (ZFO-TiO2). The results show that the HAOP system significantly enhances the degradation rate of CIP, outperforming conventional TiO2-based photocatalysis. The study also identifies the intermediates and degradation pathways of CIP, and demonstrates the reduced toxicity of the photodegraded samples.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Inorganic & Nuclear
Huiyuan Chu, Yameng Li, Chaozhan Wang, Ji-Wei Shen, Yinmao Wei
Summary: A MOF-coated upconversion nanoconstruct (UCTSCF) was designed for the treatment of hypoxic tumors. The MOF coating catalyzed the overexpression of H2O2 in cancer cells to generate cytotoxic reactive oxygen species, while the upconversion nanoparticles provided a light source to alleviate the severe treatment conditions. Additionally, the co-doped mesoporous silicon generated elevated oxygen levels, achieving synergetic photochemodynamic therapy/oxygen-elevated photodynamic therapy.
DALTON TRANSACTIONS
(2022)
Article
Environmental Sciences
Christiarani Jegadeesan, Adishkumar Somanathan, Rajesh Banu Jeyakumar, V. Godvin Sharmila
Summary: The combined process of electrocoagulation and solar photo Fenton was used to treat landfill leachate, resulting in effective removal of COD and colour. The electrocoagulation process and solar photo Fenton process improved the biodegradability of the leachate, making it a viable treatment technique.
ENVIRONMENTAL TECHNOLOGY
(2023)
Article
Environmental Sciences
Enric Brillas
Summary: Conventional wastewater treatment plants have a limited ability to remove recalcitrant and toxic organic pollutants. Developing powerful oxidation technologies is crucial for preserving water quality. The solar photoelectro-Fenton (SPEF) process proposed by our laboratory in 2007 has proven to be an effective and cost-efficient method for destroying common organic pollutants. This review summarizes the advances in SPEF technology up to 2022, highlighting its high oxidation power due to the simultaneous action of hydroxyl radicals and sunlight photolysis.
Review
Chemistry, Physical
Miguel A. Sandoval, Jorge Vidal, Wendy Calzadilla, Ricardo Salazar
Summary: This review summarizes recent advances in solar advanced oxidation processes for degrading pesticides and discusses their potential application in wastewater reclamation. It also presents the global occurrence of pesticides and optimal operating parameters for their removal from different water matrices.
CURRENT OPINION IN ELECTROCHEMISTRY
(2022)
Article
Energy & Fuels
S. Shabarish, K. Tamilarasan, J. Rajesh Banu, V. Godvin Sharmila, M. Dinesh Kumar
Summary: The combination of surfactant and sonication disintegration techniques was implemented to generate energy-efficient biohydrogen from seaweed Chaetomorpha antennina. It was found that sonic surfactant disintegration (SSD) could improve the availability of macromolecules in anaerobic fermentation, leading to an improvement in biohydrogen generation from seaweed.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Chemistry, Physical
J. Rajesh Banu, S. Kavitha, R. Yukesh Kannah, J. Jayakodi, Gopalakrishnan Kumar, Vinay Kumar Tyagi, Shashi Kant Bhatia
Summary: The study investigates the possibility of enhancing biomass solubilization and economic output through a combinatorial pretreatment, which combines the use of a surfactant (sodium dodecyl sulfate) with a mechanical pretreatment induced by a disperser. The results show that this combinatorial pretreatment reduces energy input and improves solubilization and methane production, leading to higher net profit compared to the conventional disperser-mediated disintegration process.
SUSTAINABLE ENERGY & FUELS
(2023)
Article
Energy & Fuels
Shabarish Shankaran, Tamilarasan Karuppiah, Rajesh Banu Jeyakumar, Godvin Sharmila Vincent
Summary: A combined pretreatment method of sonication and alkali (KOH) liquefaction (SAL) was used to increase biohydrogen production from macroalgae. The optimal conditions for sonication liquefaction (SL) were determined to be a sonic intensity of 50% and a pretreatment time of 30 min, while pH 11 was found to be the best for effective macroalgal liquefaction in SAL. Compared to SL, SAL consumed less ultrasonic specific energy and produced more volatile fatty acids (VFA), resulting in a 15% increment in biohydrogen production and 44.4% energy savings.
Review
Green & Sustainable Science & Technology
Ginni Gopalakrishnan, Rajesh Banu Jeyakumar, Adishkumar Somanathan
Summary: One of the biggest problems the world is currently facing is wastewater treatment. This paper provides a concise summary of the state of the art in advanced oxidation processes (AOPs), biological treatment, and their efficient application in degrading organic contaminants in wastewater. The use of a photoreactor is essential for most photocatalytic processes, and this review examines the effectiveness of different reactor configurations. The review also discusses the integration of various AOPs and biological approaches, highlighting the benefits of producing non-hazardous by-products, minimizing energy consumption, and complete pollutant degradation. Additionally, the challenges and issues in achieving environmentally and economically feasible wastewater treatment processes are outlined.
Review
Engineering, Chemical
Preethi Muthu, Gunasekaran Muniappan, Rajesh Banu Jeyakumar
Summary: Energy fuels from biomass utilization are considered economically and environmentally friendly. Bioenergy acts as an alternative to traditional fossil fuels, reducing greenhouse gas emissions. The underutilization of potential food waste has led to its wasteful disposal, but bioenergy production through anaerobic digestion offers an effective solution. Pretreatment methods enhance the hydrolysis stage, increasing soluble organics and facilitating bioenergy production. This review focuses on food waste utilization and pretreatment methods, discussing challenges and future recommendations.
Review
Biotechnology & Applied Microbiology
K. N. Yogalakshmi, T. M. Mohamed Usman, S. Kavitha, Saloni Sachdeva, Shivani Thakur, S. Adish Kumar, J. Rajesh Banu
Summary: This review focuses on strategies for developing viable lignocellulosic biomass-based biorefineries to produce biofuels and biochemicals. Sustainable biomass processing is a major challenge that requires cost effectiveness and environmental sustainability. The challenges of biomass availability and bioconversion process are explained in detail. The limitations associated with biomass structural composition can hinder biofuel production, especially in mono-process approaches. Biorefineries and integrated systems can improve biofuel conversion. This review provides a summary of the limitations and advantages of mono and integrated approaches in LCB bioconversion to biofuels and biochemicals.
FERMENTATION-BASEL
(2023)
Review
Environmental Sciences
R. Anu Alias Meena, J. Merrylin, J. Rajesh Banu, Shashi Kant Bhatia, Vinod Kumar, Grzegorz Piechota, Gopalakrishnan Kumar
Summary: The voluminous POME is a threat to the environment, but it can be converted into biorefinery products. The review discusses the risk assessment of POME and proposes using fish species, including invasive ones, for toxicants identification. Various treatments and technologies have been investigated, such as adsorption, anaerobic digestion, and microalgae cultivation, with emphasis on advanced bioreactors. The production of biodiesel from POME shows promise, despite economic challenges.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Sivaraman Chandrasekaran, J. Rajesh Banu, Gopalakrishnan Kumar
Summary: The study aimed to improve the hydrolysis potential of paper mill sludge by a two-phase disintegration process. The removal of extracellular polymeric substance (EPS) was focused on, in order to enhance the efficiency of subsequent disperser disintegration. The efficiency of disintegration was evaluated using soluble chemical oxygen demand (SCOD) and suspended solids (SS) reduction as assessment indices. Deflocculation of sludge at a calcium peroxide dosage of 0.05 g/g suspended solids (SS) and a temperature of 70 degrees C resulted in greater EPS removal. A clear variation was observed between deflocculated and disintegrated sludge (19.2%) compared to disintegrated sludge alone (13.5%), indicating the necessity of deflocculation before disintegration. Additionally, deflocculated and disintegrated sludge achieved higher biomethane production of 0.214 L/g COD than pretreated sludge alone. The efficiency of the proposed disintegration reduced the sludge management cost from 170 USD (Disperser alone (D alone disintegration)) to 51 USD (Thermal calcium peroxide mediated-Disperser (TCaO2-D disintegration)).
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Arulazhagan Pugazhendi, Mamdoh T. Jamal, Rajesh Banu Jeyakumar
Summary: In this study, Pluronic P-123-induced microwave pretreatment was used to disintegrate the marine macroalgae biomass, achieving a maximum COD solubilization of 31.02%. The combination of surfactant with microwave pretreatment significantly improved the solubilization efficiency and reduced the pretreatment time. Moreover, Pluronic P-123-induced microwave pretreatment was considered more energy efficient and cost effective than microwave pretreatment alone.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
V GodvinSharmila, Surya Prakash Shanmugavel, Vinay Kumar Tyagi, J. Rajesh Banu
Summary: A large amount of plastic waste is generated globally, with most of it being dumped in landfills instead of being properly disposed. This practice poses environmental hazards as the plastic waste breaks down into microplastics, and the landfill leachate acts as a source of these microplastics. The presence of microplastics in leachate increases the risk to human and environmental health due to their dangerous pollutants and antibiotic resistance genes. Developing innovative treatment facilities is crucial to address this issue, and further research is needed for complete solutions.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Christiarani Jegadeesan, Adishkumar Somanathan, Rajesh Banu Jeyakumar
Summary: The aerated electrochemical Fenton procedure was investigated as a viable treatment approach for electrolytic degradation and decolourization of sanitary landfill leachate. The optimization effects of initial pH, applied voltage, H2O2 concentration and combination of iron electrodes on detoxification were demonstrated by COD and colour removal from stabilized leachate, respectively. This technology effectively treats stabilized landfill leachate containing toxic refractory recalcitrant organics on a large scale and reduces the number of test cases and trials.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Review
Chemistry, Physical
J. Rajesh Banu, V. Godvin Sharmila
Summary: In order to implement circular production and consumption practices, addressing key societal concerns such as resource depletion, climate change, and environmental pollution is vital. The development of biowaste refineries as an alternative to fossil fuel-based refineries is gaining global popularity. Efforts are being made to promote circular bio-economical approaches that transform food waste and leftover discharge into value-added products. The valorisation of food waste is attracting significant interest due to its affordability and adaptability. This review explores the potential of converting food waste into recyclable bioplastics and discusses various technologies, factors affecting bioplastic generation, as well as the economic viability and future scope of bioplastic production towards a sustainable bio-future.
SUSTAINABLE ENERGY & FUELS
(2023)
Review
Chemistry, Physical
J. Rajesh Banu, V. Godvin Sharmila
Summary: Plastic waste pollution, specifically non-biodegradable plastics in landfills, has had a negative impact on our biosphere. This pollution results in leaching of hazardous chemicals and release of toxic gases into the atmosphere when burned. Conventional methods of recycling plastic waste often result in products of lower value or inefficient thermal energy recovery. Upcycling methods have emerged as a potential solution to turn plastic waste into beneficial goods. This article provides a mini-review on plastic waste generation, recent advancements in upcycling, technical challenges, potential future progress, and new opportunities for a sustainable society.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Vijetha Valsa, S. Geethu Krishnan, Rashmi Gondi, Preethi Muthu, Kavitha Sankarapandian, Gopalakrishnan Kumar, Poornachandar Gugulothu, Rajesh Banu Jeyakumar
Summary: The aim of this study was to enhance the disintegration potential of paper mill sludge through alkyl polyglycoside-coupled disperser disintegration. The maximum solubilization of 6% was achieved at a specific energy input of 4729.24 kJ/kg TS when the sludge biomass was treated with the disperser disintegration method. Further enhancement in solubilization was attained by coupling the optimal disperser condition with varying dosages of alkyl polyglycoside. The alkyl polyglycoside-coupled disperser disintegration showed a higher biogas production of 125.1 mL/gCOD, compared to the disperser-alone disintegration (70.1 mL/gCOD) and control (36.1 mL/gCOD).
FERMENTATION-BASEL
(2023)
Review
Agricultural Engineering
V. Godvin Sharmila, Surya Prakash Shanmugavel, J. Rajesh Banu
Summary: Proper treatment and disposal of biomass waste is crucial to prevent environmental deposition and its negative impacts. Biofuel has emerged as a potential alternative to fossil fuels, reducing carbon emissions and meeting global energy demands. This review examines different biomass waste conversion techniques and explores the production of biofuels with zero carbon emissions. Research on anaerobic treatment, metabolic engineering, and artificial intelligence has been conducted to enhance biofuel production efficiency.
BIOMASS & BIOENERGY
(2024)
