Faculty of Chemical Engineering and Technology, Department of General and Inorganic Chemistry

PDF Export

Main research field

Analytical Chemistry, Electrochemistry, Chemical Sensors and Biosensors, Water Treatment

Specific research areas

functional materials for chemical sensors and biosensors bioanalytical application and application in food technology water and waste water treatment

Techniques/methods

thin-film fabrication (spin-coating); UV-vis spectroscopy (absorbance and fluorescence measurements); electrochemical impedance spectroscopy; analytical electrochemical instrumentations; trace metal analysis, organic trace analysis

Equipment

spin-coating facilities, ICP-MS, GC-MS, IC, HPLC, UV-Vis Spectrometers, TOC, pilot plants for water treatment

Technology keywords

  • Sensory/Multisensory Technology, Instrumentation related to construction technology
  • Composite materials
  • Chemical Technology and Engineering
  • Analytical Chemistry
  • Biosensor
  • Sensors/Multisensor Technology, Instrumentation

Services offered

  • Teaching and Training
  • Project documentation and solutions
  • Technical proposals

Market sectors

  • Alternative Energy
  • Commodity Chemicals
  • Specialty Chemicals
  • Electronic & Electrical Equipment
  • Industrial Engineering
  • Support Services
  • Food Producers
  • Pharmaceuticals & Biotechnology
  • Gas, Water & Multiutilities

Short summary (English)

Development of organic, inorganic and hybrid nanostructured polymer thin film materials for use as electronic and optoelectronic interfaces in integrated chemical devices. This work involves creating functional thin-film materials using planar microfabrication techniques (spin-coating) for application in integrated chemical and biosensor systems. Recent activities involve development and design of wireless chemical sensing systems using RFID (Radio Frequency Identification) smart card wireless platform integrated with chemical sensors. Preparation of self-assembeled monolayers on the gold-electrode and study of interaction between self-assembled monolayers and metal cations. Research of interaction between histidine and metal complexes formed on the surface of the electrode. Study the properties of the affinity biosensors for albumin bonding from human serum by quartz microbalance. Application of electrochemical impedance spectroscopy for construction of affinity biosensors. Study of interaction between metal complexes and self-assembled monolayers with albumin marked by histidine. Application of developed biosensors in flow injection analysis system (FIA, SIA) or by use of microfluidics platforme. Application in biomedicine, food and drug technology. The groundwater of northern Croatia usually contains high concentrations of iron, manganese, ammonia and arsenic, and is therefore unsuitable for use as drinking water. Thus, a simple and widely applicable water treatment procedure for the simultaneous removal of iron, manganese, ammonia and arsenic is needed. Pilot plants were employed for the development and evaluation of a single-step packed bed bio-filtration removal process. The filtration rates were as high as 22- 24 m/h and the treatability coefficients k and n, which characterize the processes, were estimated. Moreover, a fast startup procedure of the bio-filters was developed, too. A number of laboratory-scale and pilot-plant field experiments were performed on typical groundwater from numerous locations of northern Croatia. The results of the experiments undoubtedly indicate that the simplest and most efficient arsenic removal process from ground water is the adsorption of arsenic on iron(III) hydroxide. This process is simply implemented on the existing water treatment facilities, ensuring that the arsenic concentrations in the effluent are as low as γ(As) < 10 μg/L.

Short summary (Croatian)

Razvoj organskih, anorganskih i hibridnih nanostrukturiranih polimernih materijala u obliku tankih filmova kao elektronickih ili optoelektronickih sucelja u integriranim kemijskim uredajima. Primjena se uglavnom odnosi na integrirane kemijske senzore i biosenzore, a za pripravu funkcionalnih tankih filmova rabe se tehnike planarne mikroproizvodnje (spin-coating). Osim razvoja novih funkcionalnih materijala bavimo se i razvojem bezicnih kemijskih senzorskih sustava utemeljenim na RFID (Radio Frequency Identification) smart card bezicnoj platformi integriranoj s kemijskim senzorima. Priprema samoformirajućih slojeva na površini zlatne disk elektrode te proučavanje interakcije između samoformirajućih slojeva i metalnih kationa. Posebice je naglašeno istraživanje međudjelovanja histidina i metalnih kompleksa formiranih na površini mjerne elektrode. Proučavanje mogučih izvedbe afinitetnih senzora za vezanje albumina iz krvnog seruma primjenom kvarcne nanovage. Korištenje elektrokemijske impedancijske spektroskopije u konstrukciji afinitetnih senzora. Primjena tako izvedenih senzora u protočnim mjerenjima analizom injektiranja u protok ili uporabom mikrofluidičke platforme.Razvijeni senzori se mogu uporabiti u biomedicinskoj laboratorijskoj dijagnostici te proizvodnji hrane i lijekova. Podzemne vode istočne Hrvatske sadrže povećane koncentracije željeza, mangana amonijaka i arsena, te se moraju pročišćavati pri korištenju za pitku vodu. Postoji stoga potreba za jednostasvnim postupkom za istodobno uklanjanja željeza, mangana amonijaka i arsena iz podzemnih voda. Primjenom pilot postrojenja razvijen je jednostupanjski biološki postupak za obradu podzemnih voda, prikladan za rad pri velikim brzinama filtracije od 22-24 m/h. Nadalje, određeni su kinetički parametric, k i n, procesa, a razrađen je postupak i za brzo uhodavanja bioloških filtara za uklanjanje željeza, mangana i amonijaka iz podzemnih voda. Proveden je niz laboratorijskih i terenskih ispitivanja pilot postrojenjima obrade tipičnih podzemnih voda diljem istočne Hrvatske. Rezultati ispitivanja jednoznačno pokazuju da najednostavniji postpak uklanjanje arsena primjenjuje adsorpciju arsena na željezov(III) hidroksid. Postupak se jednostavno primjenjuje i na postojećim postrojenja za preradu vode osiguravajući koncentracije sve do γ(As) < 10 μg/L u pitkoj vodi.

Last update: 31.10.2014. 11:41:11

Kontaktirajte nas