Biomass pelletizing: Characterization of cow dung assisted solid recovered bio-fuel from agricultural waste

Eggshells and rice husk, two types of notable agricultural waste were used as bioadsorbent to remove Methylene Blue dye (MBD) in aqueous solution. This study was to investigate the performance of these two bioadsorbents in removing MBD. The removal percentage, adsorption capacity, and porosity characterization were examined. The method applied was a physical filtration. UV-VIS Spectrophotometer was used to determine the efficiency of the bioadsorbents in MBD adsorption. The highest removal percentage at the most concentrated MBD were 51% and 98% for eggshells and rice husks respectively. Meanwhile the characterization of rice husks pore size and volume proves that higher adsorptivity towards dye compares to eggshells porosity. It was concluded that the eggshells and rice husks bioadsorbents was successful to treat industrial textile wastewater with rice husks as the most efficient bioadsorbent in removing MBD.

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PREPARATION AND CHARACTERIZATION OF ACTIVATED CARBON FROM AGRICULTURAL WASTE BY MICROWAVE IRRADIATION

Yanbu Journal of Engineering and Science ◽

10.53370/001c.24303 ◽

2021 ◽

Author(s):

Hossam Altaher ◽

Manar Hassan ◽

Fahd ElOufi ◽

Yehia Magdy

Keyword(s):

Activated Carbon ◽

Microwave Irradiation ◽

Agricultural Waste ◽

Characterization Of Activated Carbon

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Availability and utilisation pattern of agricultural waste at household level in selected areas of Bangladesh

Waste Management & Research ◽

10.1177/0734242x211064416 ◽

2021 ◽

pp. 0734242X2110644

Author(s):

MA Monayem Miah ◽

Md Enamul Haque ◽

Richard W Bell ◽

Md Wakilur Rahman ◽

Sohela Akhter ◽

...

Keyword(s):

Animal Feed ◽

Agricultural Waste ◽

Soil Health ◽

Farming Systems ◽

Household Waste ◽

Cow Dung ◽

Organic Fertiliser ◽

Household Level ◽

Intensive Farming ◽

Novel Approach

The use of organic fertilisers and soil amendments are almost universally recommended for improving the organic matter levels and maintaining soil health, but few studies documenting the actual availability and quality of such materials on smallholder farms are available. We selected a case study of 300 households from northern and southern Bangladesh to assess the types of waste materials available for recycling and their usage patterns at household level and we applied a novel approach to empirically identify household waste as input inefficiency in a production context. Northern districts have highly intensive farming systems whereas southern districts have low intensity farming. The total amount of agricultural waste produced at household level was estimated at 822 kg per month. Cow dung contributed about 65% of the total waste followed by animal feed refusal waste (11%), garbage (7%) and kitchen waste (6%). Most of the farmers utilised cow dung and wastes as organic fertiliser and lesser amounts as cooking fuel. Econometric analysis shows that the number of cattle and small ruminant per holding, total area of cultivated land and family size were significant factors that influence the amount of waste production at household level. Each household can reduce the chemical fertiliser cost by Tk. 1463 (US$ 17.84) per month by using compost prepared from household waste. There were ample opportunities for compost/vermicomposting and potential markets. The Department of Agricultural Extension from the public sector and private sector agents might motivate farmers to harvest the potential benefits of agricultural waste through effective management and utilisation.

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