Biogas Production-optimal conditions affecting gas yield ab 58.99 € als Taschenbuch: Biogas Production from Animal and Domestic Waste. Aus dem Bereich: Bücher, English, International, Gebundene Ausgaben,
The Effect on the Yield of Biogas Using Algae as Stimulant ab 35.99 € als Taschenbuch: . Aus dem Bereich: Bücher, Wissenschaft, Technik,
The rice (Oryza sativa L.) - wheat (Triticum aestivum L.) cropping system occupies about 28.8 million hectares mainly spread over Asia s five countries, namely, India, Pakistan, Nepal, Bangladesh and China. Organic farming offers alternative system for sustainable production and natural resource system. The aim of nutrient management in organic systems is to optimize the use of on farm resources and minimize losses. Organic materials such as farmyard manure, compost, vermicompost, biogas slurry, green manures, crop residues, biofertilizers and cover crops are other valuable source of nutrients to improve the growth and yield attributes, yields, nutrient uptake, grain quality and soil fertility. The present book is a part of studies which is conducted to determine the optimum combination organic manures crop residues and biofertilizers for meeting nutritional requierment of rice-wheat and rice-wheat-mungbean cropping systems. It also focuses on studying the impact of organic farming practices on the health of soil, quality of organically grown products in order to find out economics of organic farming of rice-based cropping systems.
Energy is a vital commodity. As the fossil fuel resources are limited and their demand is high, the energy gap can be met with the energy generation from renewable resources. Bio-energy generated from diversified sources provides local and emerging opportunities to reduce the over dependence on fossil fuels. Renewable energy from biomass is one of the most efficient and effective options among various other alternative sources of energy currently available. The anaerobic digestion of biomass requires less capital investment and per unit production cost as compared to other renewable energy sources such as hydro, solar and wind. Further, renewable energy from biomass is available as a domestic resource in the rural areas, which is not subject to world price fluctuations or the supply uncertainties as of imported and conventional fuels. Keeping in view the importance of biomass conversion into biogas, the book reports a methodology for maximising the biogas yield from the anaerobic digestion of organic wastes.
Anaerobic codigestion of municipal wastewater sludge and restaurant grease was investigated in a semi-continuous lab-scale digestion experiment under mesophilic condition (37 °C). Compared to the control digester, COD loading rate for test digester was elevated to 387% (organic loading rate 4.235 kgVS/m3/d) and led to 467% increase in daily biogas production, 25.2% increase in methane yield (based on VS deduction), 29.8% increase in COD reduction rate and 27.2% increase in VS reduction rate, respectively. Methane content ranged from 62% to 67%. There was no negative effect of grease addition on the digester performance in this experiment. The great increases in biogas production and methane yield indicated enhanced digestion performance. In addition, partial alkalinity and pH proved to be good indicators to monitor digestion process and predict overloading. It is still possible to keep increasing organic loading by the addition of more grease, but according to monitoring results, the system was close to overloading.
The main objective of this work is to study the possibility of using dairy manure in Biofert production to eliminate the pollution effect and contribute in solving bio fertilizer sacristy problem. This study was carried out to investigate the most important factors affecting the Biofert production such as temperature, agitation speed and aeration rate to obtain the proper factors for optimum production of the nutrient solution (Bio-fertilizer). Two different systems of aeration were studied. After obtaining the proper nutrient solution for production, field experiment was conducted to study the effect of the properties of different of nutrients solution on the yield and yield parameters of tomato plants. Biogas production under different conditions was also determined.
The book is about findings of the research conducted in the field, which compares two varieties of Okra (Abelmoschus esculentus L.) yield in different combinations of organic and inorganic fertilizers. Use of inorganic fertilizer is increasing day by day to produce more though it deteriorates the soil physical and biological property. Organic and inorganic fertilizers both increases the production, soil property, sustainability and reduces the cost of fertilization in the field. Biogas slurry is a organic fertilizers which is not properly used in our field for producing crops and it is wasted mainly. Thus this research attempts to utilize the organic waste i. e. biogas slurry for vegetable production after its proper recycling which will reduce the environmental pollution also.
The present work is a study of possibilities in producing biogas from sugar beet pulp. The sugar beet pulp is a relative efficient substrate. Biogas yield obtained from it reaches 584 m3/ ton of oDM. Moreover, the methane content in biogas ranges from 50 to 55%. This guideline is based on sugar factory located in Poland. The above mentioned factory plan to use their own by- products, which are sugar beet pulp, beet roots and molasses. The biogas plant is to have capacity of 1.55 MW. Very important factors in present study are economical issues. In order to build a plant it is needed to calculate foundations, materials, miscellaneous and engineering costs. Overall cost of biogas plant is about 5 mln Euros. Annual expenses, outcomes and incomes are calculated in present study. The main reason of biogas plant is producing and selling thermal and electric energy. In case of building such a big undertaking a bank loan can be needed. The bank loan is explained on this example. Total sums of loans and bank interests as well as the investment payback time are presented in this book.
Pharmaceutical industries discharge a variety of highly toxic and persistent organics in their wastewater. presence of antibiotics in pharmaceutical wastewater is affecting on treatment processes. Chapter one is an overview about the wastewater treatment processes . Chapter two gives a description of Samarra Drugs Factory, source of pharmaceutical wastewater, quality and quantity of untreated wastewater. Chapter three describes the literatures concerning types of biological treatment processes and the previous studies. Chapter four gives an idea about the experimental works.Chapter five is intended to present the results and discussion, concerning the removal of COD(chemical oxygen demand), BOD (biochemical oxygen demand),Tss (total suspended solids) and other pollutants by upflow anaerobic filter, anaerobic/ aerobic removal of COD and BOD, the biogas yield, the effective depth of anaerobic filter and the design of full scale upflow anaerobic filter. Finally chapter six presents the conclusions and recommendations for further studies.The target of this work is treating of pharmaceutical waste water by sequential anaerobic/aerobic biological treatment.