Efeitos da relação carbono/ nitrogênio na produção de biogás proveniente de resíduos sólidos orgânicos urbanos / Effects of the carbon-nitrogen ratio on the biogas production from municipal organic solid waste

The study was conducted to determine the performance of vermicompost and conventional aerobic compost produced from municipal organic solid waste used in Amaranthus viridis production during the period from October 2014 to June 2015 at the Horticulture Research Centre of the Bangladesh Agriculture Research Institute, Gazipur, Bangladesh. In this study, three compost varieties (vermicompost, conventional aerobic compost, combination of vermicompost and conventional compost) and three levels of compost treatments (0, 100 and 150 g/m2) with three replications were applied. The plots were arranged in randomized complete block design. Vermicompost was prepared by using Eisenia fetida. Different composts (vermicompost and conventional aerobic compost) and plant sample were taken first for chemical and physical analysis to find out the effect of these composts on the growth of amaranth. The result of the study showed that different compost varieties significantly affected the chlorophyll content, dry matter content, height per plant, numbers of leaves, weight per plant, nitrogen, calcium, magnesium, potassium, total phosphorus positively in favour of vermicompost application and sulphur content, sodium, moisture content in conventional aerobic compost application. Vermicompost application showed higher result for growth and yield indices and nutrient content compared with conventional aerobic compost.J. Environ. Sci. & Natural Resources, 9(2): 43-49 2016

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Composition of Domestic Solid Waste on Biogas Production and Characteristic in MSW Landfill

E3S Web of Conferences ◽

10.1051/e3sconf/20187307009 ◽

2018 ◽

Vol 73 ◽

pp. 07009

Author(s):

Syafrudin Syafrudin ◽

Samadikun Budi Prasetyo ◽

Wardana Irawan Wisnu

Keyword(s):

Solid Waste ◽

Biogas Production ◽

Density Level ◽

Heating Value ◽

Organic Solid Waste ◽

High Heating Value ◽

Organic Solid ◽

Inorganic Waste ◽

Domestic Solid Waste

Organic solid waste will undergo a decomposition process and produces some gases compounds such as a large enough of Methane (CH4), Carbon Dioxide (CO2) with Oxygen (O2) and N2. The high heating value of CH4 in biogas can make biogas as a good source of renewable energy and environmentally friendly. Biogas calorie efficiency is proportional to the concentration of CH4 in biogas. However, the quantity and quality of biogas that produced in landfill depend on the characteristic and density of domestic solid waste in landfill. The composition of organic and inorganic waste and the density of waste pile will alter the CH4 content. This study focuses on measuring CH4 content of the solid waste with different density while also identifying the composition of disposed solid waste. The result indicates that the CH4 content ranges from 33% to 57.7% with 22.19% to 42.24% of CO2 and approximately 1.21% - 7.92% of O2. The presence of inorganic waste and density level of waste contribute to the decomposition rate and CH4 content.

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Adsorption of heavy metals using activated carbon produced from municipal organic solid waste

Desalination and Water Treatment ◽

10.1080/19443994.2016.1144536 ◽

2016 ◽

Vol 57 (51) ◽

pp. 24519-24531 ◽

Cited By ~ 10

Author(s):

Muhammad H. Al-Malack ◽

Abdullah A. Basaleh

Keyword(s):

Heavy Metals ◽

Activated Carbon ◽

Solid Waste ◽

Organic Solid Waste ◽

Organic Solid ◽

Municipal Organic Solid Waste

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Physiology and Rumen Microbial Ecology of Goats Fed Municipal Organic Solid Wastes Treated with Diastic Microbes from Snail (Achatina achatina)

Annual Research & Review in Biology ◽

10.9734/arrb/2021/v36i1030438 ◽

2021 ◽

pp. 82-94

Author(s):

Agida, Christopher Agboje ◽

Essien Ekpenyong Nsa ◽

Uduakobong Essien John ◽

Constance Ihuoma Adje ◽

A. N. Chukwuemela ◽

...

Keyword(s):

Fatty Acids ◽

Microbial Ecology ◽

Solid Waste ◽

Organic Waste ◽

Volatile Fatty Acids ◽

Panicum Maximum ◽

Total Volatile ◽

Organic Solid Waste ◽

Organic Solid ◽

Municipal Organic Solid Waste

The experiment was conducted with the objective of providing more information on the physiology and rumen microbial ecology of goats fed municipal organic solid waste treated with Diastic microbes of snails (Achatina achatina). The study was on the treated and untreated municipal organic solid waste as components of experimental diet. Balanced rations containing diets; A = 45% untreated municipal organic waste (UMOW), B = 45% treated municipal organic waste (TMOW), and C = 70% treated municipal organic waste (TMOW), with wheat offal, palm kernel cake, and molasses used to balance the diets. Where grass/legume ratio of 3 parts of Panicum maximum and 1 part of Centrocema were fed across treatments at the same proportion. The three rations were fed to 18 unsex Red Sokoto goats aged between 6 to 7 months, with an average weight of 8.01±2.50kg. They were housed in pens, on a floor space of 0.5 to 0.75m2 in a completely randomized designed experiment replicated six times and fed for a period of 52 days. The results were separated according to the parameters of rumen physiology (pH, total volatile fatty acids, acetic, propionic, butyric acids and ethanol, and rumen ecology (bacteria, protozoa, and fungi, which are mainly anaerobic microbes). The investigations revealed that microbial (bacteria, protozoa and fungi) load counts were significantly (p<0.05) influenced by dietary treatments. While the total volatile fatty acids (TVFA), acetic, butyric and propionic increased (p<0.05) except for the TVFA and the propionic acid that showed numerical (p>0.05) increased levels of (TMOW). The pH levels improved (p>0.05) between 6.7 to 6.8 where the rumen electrolytes (Ca, Na and K) increased (p<0.01) with increased levels of TMOW. Rumen moisture, dry matter and fat content were (p<0.01) influenced by TMOW diets while ash content was (p<0.01) influenced by the TMOW. Crude protein, ether extract, crude fibre and carbohydrate were not affected (p<0.01; p<0.05) affected. It is good to note that, the microbial community of snail used in the pre-feeding fermentation of municipal organic waste had influence in the physiology and rumen microbial ecology at interface with the goat, enhanced improved the organic matter degradation and feed quality, of the highly fibrous municipal organic solid waste.

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