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Ing. Anna Brunerová, Ph.D. (17301)

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ROUBÍK, H. – MAZANCOVÁ, J. – BRUNEROVÁ, A. – HERÁK, D.; idPublikace = 76517; Název: Factors influencing use of fuelwood and its environmental impacts in Tapanuli Utara regency, North Sumatra-- Neexistuje podtyp publikace --

BRUNEROVÁ, A. – ROUBÍK, H. – BROŽEK, M. – VELEBIL, J. Agricultural residues in Indonesia and Vietnam and their potential for direct combustion: with a focus on fruit processing and plantation crops. Agronomy Research, 2018, roč. 16, č. 3, s. 656-668. ISSN: 1406-894X.

CHITECULO, V. – BRUNEROVÁ, A. – SUROVÝ, P. – BROŽEK, M. Management of Brazilian hardwood species (Jatoba and Garapa) wood waste biomass utilization for energy production purposes. Agronomy Research, 2018, roč. 16, č. 2, s. 365-376. ISSN: 1406-894X.

BRUNEROVÁ, A. – ROUBÍK, H. – BROŽEK, M. Bamboo Fiber and Sugarcane Skin as a Bio-Briquette Fuel. Energies, 2018, roč. 11, č. 9, s. 1-20. ISSN: 1996-1073.

BRUNEROVÁ, A. – BROŽEK, M. – ŠLEGER, V. – NOVÁKOVÁ, A. Energy Balance of Briquette Production from Various Waste Biomass. Scientia Agriculturae Bohemica, 2018, roč. 49, č. 3, s. 236-243. ISSN: 1211-3174.

BRUNEROVÁ, A. – MÜLLER, M. – ŠLEGER, V. – **HIMSAR, A. – VALÁŠEK, P. Bio-Pellet Fuel from Oil Palm Empty Fruit Bunches (EFB): Using European Standards for Quality Testing . Sustainability, 2018, roč. 10, č. 12, s. 0-0. ISSN: 2071-1050.

BRUNEROVÁ, A. – BROŽEK, M. – MÜLLER, M. Utilization of waste biomass from post–harvest lines in the form of briquettes for energy production. Agronomy Research, 2017, roč. 15, č. 2, s. 344-358. ISSN: 1406-894X.

BRUNEROVÁ, A. – MALAŤÁK, J. – MÜLLER, M. – VALÁŠEK, P. – ROUBÍK, H. Tropical waste biomass potential for solid biofuels production. Agronomy Research, 2017, roč. 15, č. 2, s. 359-368. ISSN: 1406-894X.

ROUBÍK, H. – MAZANCOVÁ, J. – **SITUMEANG, R. – BRUNEROVÁ, A. – **SIMATUPANG, T. Livestock manure management practices in rural households in Tapanuli Utara regency of North Sumatra. Agronomy Research, 2017, roč. , č. , s. 0-0. ISSN: 1406-894X.

BRUNEROVÁ, A. – BROŽEK, M. Is it advantageous to reuse fruit waste biomass from processing of grapevine (Vitis vinifera L.) for briquette production?. In Engineering for Rural Development 24.05.2017, Jelgava, Latvia. Jelgava, Latvia: Latvia University of Agriculture, 2017. s. 555-560.

BRUNEROVÁ, A. – MÜLLER, M. – BROŽEK, M. Potential of wild growing Japanese knotweed (Reynoutria japonica) for briquette production. In Engineering for Rural Development 24.05.2017, Jelgava, Latvia. Jelgava, Latvia: Latvia University of Agriculture, 2017. s. 561-568.

BRUNEROVÁ, A. – ROUBÍK, H. – HERÁK, D. Suitability of aquatic biomass from Lake Toba (North Sumatra, Indonesia) for energy generation by combustion process. In 1st Nommensen International Conference on Technology and Engineering 11.07.2017, Medan, Indonésie. Medan: IOP Conference Series: Materials Science and Engineering, 2017. s. 1-7.

BRUNEROVÁ, A. – ROUBÍK, H. – BROŽEK, M. – HERÁK, D. – ŠLEGER, V. – MAZANCOVÁ, J. Potential of Tropical Fruit Waste Biomass for Production of Bio-Briquette Fuel: Using Indonesia as an Example . Energies, 2017, roč. 10, č. 12, s. 1-22. ISSN: 1996-1073.

BRUNEROVÁ, A. – PECEN, J. – BROŽEK, M. – IVANOVA, T. Mechanical durability of briquettes from digestate in different storage conditions. Agronomy Research, 2016, roč. 14, č. 2, s. 327-336. ISSN: 1406-894X.

BRUNEROVÁ, A. – IVANOVA, T. – BROŽEK, M. Mechanical durability of digestate briquettes mixed with mineral additives. In 15th International Scientific Conference on Engineering for Rural Development 25.05.2016, Jelgava. Jelgava, Latvia: Latvia University of Agriculture Faculty of Engineering , 2016. s. 971-976.

ROUBÍK, H. – MAZANCOVÁ, J. – HELLER, T. – BRUNEROVÁ, A. – HERÁK, D. Biogas as a promising energy source for Sumatra (review). In Proceeding of 6th International Conference on Trends in Agricultural Engineering 2016 07.09.2016, Praha. Praha: Czech University of Life Sciences Prague - Faculty of Engineering, 2016. s. 537-544.

BRUNEROVÁ, A. – BROŽEK, M. Optimal feedstock particle size and its influence on final briquette quality. In 6th International Conference on Trends in Agricultural Engineering (TAE) 07.09.2016, Praha. Praha: Czech University of Life Sciences Prague, 2016. s. 95-101.

BRUNEROVÁ, A. – ROUBÍK, H. Podtyp: Příspěvek ve sborníku (mimo kategorie RIV); Manual low-pressure briquetting press and its use in rural areas of North Sumatra. 2016, The existing burden on biomass resources, negative impacts on environment and problems of energy lowering resources could be alleviated by undertaking comprehensive alternative energy technologies for decentralized application. Utilization of biomass for combustion purposes ensures energy consumption requirements for heating and cooking in developing countries (DCs). However, using of raw biomass is characterized by low energetic efficiency and harmful air pollution, but densification technology (briquetting) can effectively reduce mentioned undesirable impacts. However, implementation of briquetting technology in DCs encountered limitations related to background facilities; heavy machinery as high-pressure briquetting press is used for briquette production, which means high initial expenditures and energy consumption. Therefore, manual low-pressure briquetting technology (operation pressure <5 MPa) represents alternative for biomass densification in DCs. In present research a manual low-pressure briquetting press was constructed and tested in rural areas of North Sumatra. Partially disassembled construction was manufactured from wood components. System of piston and single lever powered by man power was used for biomass compaction; with square shaped briquettes. Feedstock materials originated from local production, i.e. plantation trees (coffee, cacao, coconut, oil palm), rice, sawdust, fruit skins, water plants or bamboo. Materials were crushed and mixed with water and binding agent (waste paper) in different ratios (biomass:paper – 1:1, 2:1, 5:1). After the feedstock compaction the briquettes were sundried. The results exhibited that amount and type of binding agents are major factors influencing briquettes quality, thus, low-pressure press efficiency. It was also proved that present design can be useful for small briquette manufacturers in rural areas..

BRUNEROVÁ, A. – BROŽEK, M. Podtyp: Příspěvek ve sborníku (mimo kategorie RIV); Influence of feedstock particle size on physical properties of solid biofuel from pine bark . 2016, Konference BioPhys Spring 2016 Particle size is considered as an important feedstock property because it influences briquette moisture content, rupture force and mechanical durability, which is main indicator of physical quality of briquettes. Despite this fact there is no defined range for optimal particle size. Tree bark which is commonly used as a mulching bark, however there is a potential to use it as a feedstock for briquette production. The aim of this paper was analyse the potential of waste pine bark as a feedstock for briquette production and stated the influence of different particle size on physical properties of bark briquettes. Raw feedstock was crushed by laboratory grinder to three types of particle sizes which were used for the production of three different kinds of briquette samples. All briquette samples were produced under the same manufacturing conditions into cylindrical shape with diameter equal to 50 mm by hydraulic piston press. Whole research was performed in accordance to mandatory technical standards EN ISO 17225–1:2015, EN 14918:2010, EN 18134-2:2016 and EN 15210–2:2011. Mechanical durability and rupture force tests were chosen as an indicators of briquette quality. All tested groups showed great level of mechanical durability which corresponds to second highest level (>90.0%); admittedly best results exhibited smallest particle size group. Rupture force best results were achieved by group with middle particle size. In conclusion, overall physical properties evaluation of pine bark briquettes exhibited satisfactory levels. In general in two cases from three exhibited best results group with smallest particle size and in one case of rupture force best results showed middle particle size group. It can be concluded that results differ in low level but still decreasing of particle size improves specific physical properties of briquettes..

BRUNEROVÁ, A. – BROŽEK, M. Podtyp: Příspěvek ve sborníku (mimo kategorie RIV); Advantages of densification process utilization in proper waste paper management. 2016, Konference ELLS Briquetting is suitable technology of proper waste management which uses process of densification. Briquettes, one type of solid biofuels, are considered as an environmental friendly renewable resource of energy. Waste paper is one of the most often recycled material nowadays but fact that paper recycling technology may not always be accessible together with paper degradation, it can cause that waste paper is not suitable for recycling. Briquettes degradation which influences briquette mechanical quality is caused by inappropriate handling, storage and transportation. In present research a briquette samples produced from waste paper were subjected to direct destructive testing to simulated briquette degradation in reality. Whole experimental part was performed according to mandatory technical standards (EN 643:2014, EN 15234–1:2011, EN 15210–2:2011, EN ISO 17225-1:2015). Primarily a waste paper of coloured magazines was shredded by cross cut shredder to 4×50 mm stripes and subsequently a briquette samples were produced by hydraulic piston press. Briquette samples density was stated equal to 1126 kg/m3 in average. Mechanical durability (DU) and rupture force (RF) were chosen as a quality indicators of samples. DU test was performed in special rotating dustproof drum where samples were subjected to simulated impacts. During the RF determination were samples tested by hydraulic universal tensile compression testing machine to determined maximal force which could samples tolerate before disintegration. Result values proved extremely high mechanical durability which corresponded to the highest grade (DU?95%) and outstanding level of rupture force which was equal to 95.41 N/mm in average. In general, it can be concluded that briquettes produced from waste paper exhibited very high level of mechanical strength and are also suitable to conditions where is not possible to observe ideal form of handling, storage and transportation..

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