Day 2 :
Keynote Forum
Lavinia Balan
Institut de Sciences des Matériaux de Mulhouse, CNRS, France
Keynote: Light-assisted synthesis of metal polymer nanomaterials: An efficient green approach to obtain smart materials
Biography:
Lavinia Balan obtained her PhD degree from the University Henry Poincaré in Nancy, France (2005). Her PhD was devoted to the elaboration of an original material for the anode of Li-ion batteries. After a Post-doctorate in Orleans and then in Mulhouse, she joined the Department of Photochemistry (DPG) of Mulhouse in 2006, as a CNRS Senior Researcher. She opened a new field of research in this laboratory, viz. the photoassisted synthesis of metal nanoparticles and metal-polymer nanocomposite materials. Since December 2009, she joined the Institute of Materials Science of Mulhouse (IS2M) CNRS-UMR 7361. She has published more than 100 papers, four book chapters and five patents. She has been serving as an Editorial Board Member for few scientific journals.
Abstract:
Metal nanoparticles show potential applications in various fields including but not limited to medicine, catalysis, optics or electronics. Combining the intrinsic characteristics of metal nanoparticles with those of polymers opens up new vistas in the quest for materials with very innovative properties. In this context, metal/polymer nanocomposite materials were developed through a simple, rapid and green approach based on the photoreduction of a metal precursor and polymerization of a blend of monomers. Silver nanofilms were directly generated on a variety of substrates through this environmentally friendly approach, which uses a simple UV source does not involve any reducing or stabilizing agent and does not require any thermal activation. Top-coated films of unprotected silver nanoparticles were generated from a hydroalcoholic AgNO3 solution or an acrylate monomer formulation, directly on glass substrates or food packaging plastic wraps. The metal nanoparticles and metal/polymer nanocomposites film obtained in this way were characterized and the influence of several parameters (fluence, exposure, silver ions concentration and nature of the free radicals generator) on their formation was evaluated. This photoinduced synthesis offers substantial advantages since it combines the characteristic features of light activation i.e. versatility and convenience of the process, high spatial resolution and reaction controllability (intensity and wavelength), with the simplicity of the colloidal approach. Moreover, the use of amplitude masks or interferometry devices to shape up the light beam used to induce the photoreduction of silver cations provides a very powerful and versatile means to spatially manipulate metal nanoparticles.
- Industrial and Engineering Chemistry| Environmental Chemistry |Physical and Theoretical Chemistry| Medicinal Chemistry
Location: Vasco de Gama
Chair
Bilge SENER
Gazi University, Turkey
Session Introduction
Mónica Hernández RodrÃguez
Mineral and Metallurgic Institute (ISMM), Cuba
Title: Achieving a sustainable development through wastewater treatment with low cost activated carbons
Biography:
Mónica Hernández Rodríguez is an Assistant Professor at Mining-Metallurgical Institute (ISMM), Moa, Cuba. She is doing a PhD in Chemistry at Hasselt University (in Belgium). She received her Master's in Metallurgic Processes at ISMM and a Major's level in Process Engineering at Oriente University, Santiago de Cuba. After coming to ISMM, she has served in the Metallurgic-Chemistry Departments for over 5 years. She has been the Reviewer of the Revista Colombiana de Química.
Abstract:
Traditionally, the activated carbons (ACs) used in wastewater treatment are obtained from coal, lignite, wood or animal bones but, recently, the agro-wastes have received much more attention as a cheap source for ACs production. The employment of agro-wastes can contribute to the economic development and to reduce the environmental contamination particularly in developing countries. The eastern region of Cuba concentrates more than 90% of coffee and cocoa crops and there is a special interest in increasing productivity and cultivation areas. The cocoa and coffee husks waste could be converted into added-value products as ACs. In this region are also located the main metallurgic factories, dedicated to the extraction of nickel and cobalt from lateritic ores. During the production of nickel and cobalt mixed sulphide, it is produced the acid liquor waste (WL), which is poured with Ni(II) and Co(II) ions concentration much higher than the prescribed limits by industrial activities, thus leading to the health hazards and environmental degradation. The aim of this research is to study the adsorption characteristics of Ni(II) and Co(II) ions present in multi-elemental solutions, which simulates the wastewater from an acid leaching mineral processing technology with low cost activated carbon from cocoa and coffee husks and the conversion of the exhausted AC in others added value products.
Doan Pham Minh
Université de Toulouse(CNRS), France
Title: Dry reforming of methane over hydroxyapatite-based catalysts
Biography:
Doan Pham Minh has completed his PhD from IRCELYON (France) and Post-doctoral studies from IFP (France) and IMT Mines Albi (France). He is now an Assistant Professor at IMT Mines Albi (an engineering school in France). He has published more than 50 papers in peer-reviewed international journals and has been serving as an Editorial Board Member of Waste Biomass Valorization Journal. His keyworks includes: Heterogeneous catalysis, wastewater treatment, gas treatment, gas purification, heavy metal treatment, calcium phosphate-based material, waste and biomass valorization, pyrolysis, gasification and thermal energy storage.
Abstract:
Dry reforming of methane (DRM) consists of the transformation of CO2 and CH4 in to synthetic gas (sygas, mixture of CO and H2) according to the following equation: CH4 + CO2 → 2CO + 2H2. This process allows valorizing biogas, flue gas from incinerator and natural gas into syngas which can be used in various processes such as Fisher-Tropsch synthesis, methanol synthesis, H2 production etc. DRM needs a catalyst because of the highly-chemical stability of CH4 and CO2. The main challenge of DRM relates to the deactivation of the catalyst. In fact, this process works at temperatures higher than 700°C at low pressure (close to atmosphere) to have exploitable kinetic. Under these conditions, metallic catalysts used for this process (i.e. nickel catalysts) are usually deactivated by the presence of side reactions. In this paper, we present our last research on DRM process using hydroxyapatite supported nickel and/or cobalt catalysts. Hydroxyapatite (HAP, Ca10(PO4)6(OH)2) has advantages to be thermally stable up to around 1100°C, to be not water sensitive, to have controlled acido-basicity from the adjustment of Ca/P ratio as well as high specific surface area. The results obtained show that Ni/HAP and Ni-Co/HAP are very active and stable during long reaction time of around 300 hours. The relationship between the catalyst structural properties and their catalytic performance was built. The results are promising for the design of a performing catalyst for DRM process.
Orsolya Gyulai
University of Szeged, Hungary
Title: Following crystal growth with the help of FBRM technique in case of ambroxol hydrochloride spherical agglomerates
Biography:
Gyulai Orsolya has completed her Master’s Degree from the University of Szeged as a Research Chemist in 2015 and now she is pursuing her PhD at the Institute of Pharmaceutical Technology and Regulatory Affairs. She has won several scholarships and presented her research work in Spain, Germany, Sweden, Poland, the Czech Republic and also in Hungary. Her total impact factor is more than four. She has now two more publications under review. She would like to work for a pharmaceutical company, where she could benefit from what she has learned during the years.
Abstract:
Spherical crystallization is usually the last technological step in the production of solid form drugs. Not only purification can be achieved with it, but we can manufacture the optimal morphology of the crystals. Spherical morphology with suitable mean particle size is advantageous when direct tablet making technique is used. This way the amount of the additives can be reduced, and smaller tablets can be produced. In our previous research (DOI: 10.1021/acs.cgd.7b00764), it was found that the spherical crystallization of ambroxol hydrochloride can be achieved by the non-typical methods, such as spherical agglomeration and cooling crystallization. Because of the spherical morphology, flowing and compaction properties of the powder have improved. In the present work, the parameter optimization of the spherical agglomeration method was further investigated with the help of an FBRM probe, continuously observing the crystal growth in the non-typical crystallization systems. With this on-line technique, it was possible to control the mean particle size and the optimal mixing time, and solvent-antisolvent ratio could also be determined. In case of the cooling crystallization, we applied an alternating temperature profile around the metastable zone in order to standardize the particle size. It was a heating-cooling cycle, so the smaller particles could dissolve when heating happened, then crystallize onto the surface of the larger crystals. With the FBRM probe, this process could be investigated, and the exact, optimal length of the heating-cooling periods could be determined.
Oluwafemi Lawrence Adebayo
Federal University of Technology Akure, Nigeria Lunch
Title: Concentration, temperature and kinetic studies of Kola nitida leave extract in corrosion prevention
Biography:
Oluwafemi Lawrence Adebayo has completed his MSc in Chemistry from Adekunle Ajasin University Akungba Akoko (2014), Ondo State, Nigeria. He is currently pursuing his PhD in Chemistry at Federal University of Technology Akure, Ondo State, Nigeria. He is currently working as a Lecturer in the Department of Chemistry, College of Education Ikere, Ekiti State, Nigeria. He has published 16 papers in reputed journals and is a Member of International Academy of Science and Engineering Development (IASED) with membership No: 51050165.
Abstract:
Weight loss test method was used to study the inhibition and adsorption properties of Kola nitida leaves extract addition on corrosion inhibition efficiency of mild steel in 2M HCl solution for various concentration, exposure time and working temperature. The results showed that ethanolic extract of Kola nitida leaves is a potential inhibitor for the corrosion of mild steel in acidic medium. The corrosion rate of mild steel in 2M HCl decreases with increasing in the concentration of the extract. The inhibition efficiency increases progressively as the concentration of the extract increases but decreases with rise in temperature and exposure time. The highest inhibition efficiency observed in the presence of the extract was 88.51%. The kinetics of the reaction in the presence of the extracts revealed that it follows a first order reaction and the half-life increases as the concentration of the extract increases. Adsorption studies revealed that Langmuir adsorption isotherm is the best adsorption model applicable to the adsorption of the extract on mild steel surface.
Bertha Abdu Danja
Federal University, Nigeria
Title: Analysis of drinking water quality in Kashere, Gombe state Nigeria
Biography:
Bertha Abdu Danja has completed her PhD from Brandenburg Technical University, Cottbus Germany, in 2010. Her PhD research was in the field of Environmental Chemistry. She worked as a Professor in the same University in Germany from 2006 until 2010, lecturing students and organizing their laboratory work. She has 15 publications in reputable journals. Currently, she is a Lecturer with the Federal University of Kashere, where she is the Head of Department of Chemical Sciences. She is also a Director in the same University responsible for Students Industrial Work Experience Scheme. She has attended conferences in USA, Europe, and here in Nigeria.
Abstract:
Quality of water is an important criterion for evaluating the suitability of water for drinking that is why this research is fused on the quality of different sources of drinking water in Kashere. Most people in this area do not have portable water as the source of their drinking water, so they utilize every type of water available. The ground water samples were collected and subjected to a comprehensive physico – chemical analysis. The following parameters were tested, i.e. pH, electrical conductivity, alkalinity, total hardness, total dissolved solids, phosphate, sulphate, chloride, nitrate, manganese, iron, nickel, arsenic, copper and fluoride. On comparing the results against drinking water quality standards laid by World Health Organization and Nigerian Standard Organization, it was found that the water quality parameters were within the permissible limit, but some were not. This project has concluded that, based on available laboratory equipment’s most parameters were within given limit but more detailed research is needed to test more parameters than this work did, to ascertain the quality of drinking water.
Prakash Mms.Kinthada
Sri Vidyanikethan Engineering college, India
Title: Transition metal complexes/organometallic compounds as anticancer/anti HIV drugs in pharmaceutical industry
Biography:
Prakash Mms Kinthada is a Professor in the Department of Chemistry at Sri Vidyanikethan Engineering College, Jawaharlal Nehru Technological University, Anantapur, Tirupati, India. Earlier, he was NIH Visiting Fellow at Karmanos Cancer Research Institute, Wayne State University School of Medicine. He was also a Royal Society Visiting Scientist in the Inorganic Chemistry Laboratories at the University of Oxford, UK, working on transition metal complexes as anticancer drugs. He has published 33 international publications and 31 international conference presentations including American Chemical Society conferences.
Abstract:
Cancer is a dreadful disease and any practical solution in combating this disease is of paramount importance to public health. Cancer patients have burdened by drug induced toxic side effects, and no turned to seek help from the complementary and alternative medicine hoping for a better cure. Research on platinum-based drugs and non-platinum-based drugs is a multi-million-dollar industry in USA and there is every need to produce safe drugs for the cure of this monstrous disease. Flavonoids have a long history of use in traditional medicines in many cultures. The phytochemical, curcumin is one of the major dietary flavonoid, belonging to a group of flavonol, Curcumin is a natural polyphenol. It is highly potential molecule capable of preventing and treating various cancers. Various dietary chemo preventive agents, turmeric powder or its extract are broadly used as therapeutic preparations in Indian System of medicine. We provide a summarized synthesis and structural determination of Curcumin Oxime, Curcumin Thiosemicarbazones derivative of Gold (III) complex. The use of these analogs for prevention of cancer tumor progression and treatments of human malignancies. A pharmacologic agent for treating and/or preventing cancer, among other diseases and conditions, and particularly breast, prostate, and pancreatic cancer, in humans and animals. The novel pharmacologic agent is an isoflavonoid or isoflavonoid mimetic covalently attached to a cytotoxic pharmacophore that, preferably has the ability to conjugate with a metal salt to form a more potent metal complex, particularly an Au (III) complex and other complexes of Platinum, Palladium, Ruthenium, Copper etc.