Waste derived biomaterials as building blocks in the biomedical field

Recent developments in the biomedical arena have led to the progress of several biomaterials by utilizing bioactive molecules from biological wastes arising from the fish, meat, and poultry industries. These...

Effects of organic fertilizers via quick artificial decomposition on crop growth

Applying organic matters into the soil would help to improve soil quality and sustain crop production. In addition, the small molecular organic matters could be active in influencing soil nutrient cycling and crop development. Thus, this study has firstly induced a new technology of quick artificial decomposition to produce fertilizers containing small molecular organic compounds from crop residues and other biological wastes. The fertilizers were produced via the quick artificial decomposition from biological wastes. The small organic species in the fertilizers were identified by the LC–MS. Field experiments of kiwifruit were conducted to test the effects of fertilizers. In total, 341 species of small organic matters have been determined in the produced fertilizers. The results showed that the organic fertilizers could significantly increase the yields of kiwifruit by 15.2% in contrast with mineral fertilizer treatments. Whereas, the organic fertilizers could enhance the contents of nutritive components in kiwifruits. These results proved that the organic fertilizers containing more small organic matter could be more efficient in promoting crop production.

VETERINARY SANITARY EVALUATION OF THE WAYS OF DISPOSAL OF BIOLOGICAL WASTES ON LARGE INDUSTRIAL CATTLE COMPLEXES

The article presents data on biological wastes of cattle on large industrial complexes. The state of the environments surrounding cattle farms, pastures and hayfields has been studied. Etiological factors responsible for biological waste in animals have been defined.

Organic Farming: Prospects, Constraints, Opportunities and Strategies for Sustainable Agriculture in Chhattisgarh - A Review

Organic farming is a sustainable agriculture production system is being followed from ancient times in India. The natural resource management and biodiversity conservation is a core principle of organic agriculture. During post independence, the most important challenge in country has been to produce enough food grain for the growing population. Hence, high-yielding production system contributing to concerns of soil health, agrosphere, environmental pollution, chemical fertilizers, agrochemicals and sustainability of agricultural production. This process involves the use of biological wastes (crop, animal and farm wastes, aquatic wastes), biological materials, avoiding synthetic substances to maintain soil fertility and ecological balance thereby minimizing environmental pollution. Organic farming is a farming system that involves growing and nurturing crops without the use of synthetic fertilizers and pesticides. Also, no genetically modified organisms are permitted. The primary aim of organic farming is to keep the soil alive in good health through the use of biological wastes and other biological materials along with beneficial microbes to release macronutrients and micronutrients to crops for increased sustainable production in an eco friendly pollution free environment. Organic farming provides quality food is beneficial to human health and practice keeps the environmental friendly. The production of these organic crops is reviewed with regard to sustainable agriculture in Chhattisgarh.

Impact of Fe and Ni Addition on the VFAs’ Generation and Process Stability of Anaerobic Fermentation Containing Cd

The effects of Cd, Cd + Fe, and Cd + Ni on the thermophilic anaerobic fermentation of corn stover and cow manure were studied in pilot experiments by investigating the biogas properties, process stability, substrate biodegradation, and microbial properties. The results showed that the addition of Fe and Ni into the Cd-containing fermentation system induced higher cumulative biogas yields and NH4+–N concentrations compared with the only Cd-added group. Ni together with Cd improved and brought forward the peak daily biogas yields, and increased the CH4 contents to 80.76%. Taking the whole fermentation process into consideration, the promoting impact of the Cd + Ni group was mainly attributed to better process stability, a higher average NH4+–N concentration, and increased utilization of acetate. Adding Fe into the Cd-containing fermentation system increased the absolute abundance of Methanobrevibacter on the 13th day, and Methanobrevibacter and Methanobacterium were found to be positively correlated with the daily biogas yield. This research was expected to provide a basis for the reuse of biological wastes contaminated by heavy metals and a reference for further studies on the influence of compound heavy metals on anaerobic fermentation.

Kitchen and Garden Waste as a Source of Heat for Greenhouses

The process of composting biological waste is a natural process – in which heat is released. Biological wastes generated in typical households in Poland – are mainly kitchen waste (KW) and green waste from home gardens (GGW – if they are owned). From the ecological point of view – the most advantageous method of their management is their utilization in the place of production. The paper presents a proposal for effective management of bio-waste arising by composting – with the simultaneous use of heat for greenhouse heating in autumn. This is to encourage residents to independently compost bio-waste – and increase the level of recycling of waste generated in Poland by 2020. Calculations for greenhouses were made – in accordance with the energy audit methodology. The obtained thermal balance results were compared with the actual temperature prevailing in the greenhouse in autumn. These calculations were the basis for calculating the amount of KW and GGW enabling effective heating of greenhouses in the autumn so that the internal temperature does not drop below 10ºC. It has been calculated that 22 kg of composted bio-waste (KW and GGW) will suffice to heat the greenhouse in October with an area of 18 m2.