Biogas plants are installations for converting of biomass to produce biogas, which is a valuable energy source if a proper management of an anaerobic process is kept. In the Czech Republic are mainly agricultural biogas plant. This work is focused on evaluation of data obtained from a specific biogas plant, which is located in the town Úpice. This plant processes biodegradable waste. The aim of this study was to determine which waste processed are beneficial for the production of biogas. The Data were analyzed by statistical program R. The method used was cluster analysis. For comparsion of clusters was used ANOVA method (analysis of variance). The results of data analysis showed a positive effect on the production of biogas by waste from industrial processing of potatoes, grass and corn silage, rumen contents and dairy waste. Key words: Biogas, plant, anaerobic, fermentation, biodegradable, waste, data analysis

Erklärtes Projektziel vorliegender Arbeit ist eine Anleitung zur Prüfung bakterieller Quarantäneerreger – Cms und Rs – in Gärrestproben aus Biogasanlagen im Rahmen der Düngemittelverkehrskontrolle.

The goal of my thesis is to evaluate the importance of maize in biogas plants. The questionnaire was made to determine the parameters of hybrid corn, its harvest, subsequent silage, inclusion in the daily batch of biogas plants, and various technical and economic parameters. Twenty five biogas plants were addressed to participate in the survey. Despite the promise of anonymity, the data were obtained from only six biogas plants. Biogas plants are located in different regions of the Czech Republic, at different altitudes. The sixth and the last biogas plant is located in Austria.

The aim of this thesis was to compare several biogas plants in the South and Central Bohemia in several respects. Overall, it was also beneficial to see how these biogas plants solve or not solve the pretreatment of the substrate, as well as the use of ancillary benefits, such as the use of heat or residual digestate. Part of this thesis is a literature search, mapping the possibilities of increasing the efficiency of agricultural biogas plants.

Biogasplants are installations for converting of biomass to produce biogas, which is a valuable energy source if a proper management of ananaerobic process is kept. In the Czech Republic are mainly agricultural biogas plants. This workis focused on evaluation of data obtained from a specific biogas plant, which islocated in the town Úpice. This plant processes biodegradable waste. Data are evaluated qualitatively, also with use of cluster analysis using statistical program R as well as by a proposed linear regression models in Matlab software. Results were applied for suggestins of several measures for the management of biogas plant and for creation of non-linea rregression model, which can be further developed. . Keywords: Biogas, plant, anaerobic, fermentation, biodegradable, waste, data analysis, differential model

The thesis deals with the assessment of the investment project of the construction and operation of biogas plant Kralovická zemědělská, a.s. The emphasis is placed on the evaluation of the investment project by calculating the net present value and on the assessment of an optimal option for drawing subsidy for electricity generation.

Small-scale anaerobic digesters, known as biogas plants, were applied as an optimal livestock waste treatment as well as biogas supply for cooking and lighting demand for small-scale farmers in Vietnam. Although the biogas technology was introduced for nearly 30 years, the number of the constructed biogas plants is still limited. The current development of biogas plants is far below the real demand on livestock waste treatment that has increased significantly. This paper gives a comprehensive overview on the biogas plant development in Vietnam and attempts to address the challenges and discuss appropriate solutions for the further biogas development. / Mô hình lên men yếm khí quy mô nhỏ (được biết với tên hầm ủ khí sinh học) đã được ứng dụng hiệu quả trong xử lý chất thải chăn nuôi cũng như cung cấp nguồn nhiên liệu phục vụ nhu cầu nấu ăn và thắp sáng cho các hộ chăn nuôi nhỏ ở Việt Nam. Mặc dù đã hiện diện gần 30 năm, nhưng số lượng hầm ủ khí sinh học vẫn còn hạn chế. Sự gia tăng số lượng hầm ủ khí sinh học chưa theo kịp với nhu cầu về xử lý chất thải chăn nuôi đang ngày càng gia tăng. Bài báo trình bày các chặng đường phát triển của hầm ủ khí sinh học tại Việt Nam, ghi nhận các thách thức trong việc nhân rộng hầm ủ khí sinh học trong thực tế và thảo luận một số giải pháp để phát triển công nghệ khí sinh học.

The thesis "Economic Analysis of an Agricultural Company" aims to provide overall evaluation of the financial situation and performance of Zemědělská společnost Kosova Hora, a.s. in the years 2005 2015, applying standard methods of financial analysis. The aim was achieved by applying a ratio analysis, credibility and bankruptcy models, economic value added (EVA), analysis of operational indicators, inter-company comparisons based on selected criteria and evaluation of the project of constructing a biogas station. In all these areas the company was compared with a selection of other agricultural companies. Based on the results summarized in the concluding chapter, the analysed company scored very high both from the financial and operational perspectives.

The diploma thesis is focused on the topic of an important and working of biogas plants. Literature review is focused on working of biogas plants - their kinds, possible inputs and outputs and naturally processes. The aim of practical part is a research, which is concentrated on quantity and quality of inputs for maintain an optimal running of biogas plant, even in crisis periods (like is lack of harvest in poor year). And also it is focused on profitability poor year against average year.

The thesis deals with growing methods of silage corn for subsequent use in a biogas plant in order to increase the efficiency of a biogas plant. There are compared three methods of growing this crop. As a main indicator comparing the different methods of cultivation was a net profit from 1 hectare yield and the profit from green mass in tons from 1 hectare. A classic growing technology was compared with two modern technologies that take into account anti erosion techniques.