Cereal processing waste, an environmental impact and value addition perspectives: A comprehensive treatise

2021 ◽  
pp. 130352
Author(s):  
Gul Hassan ◽  
Muhammad Asim Shabbir ◽  
Farah Ahmad ◽  
Imran Pasha ◽  
Noman Aslam ◽  
...  
2019 ◽  
Vol 37 (2) ◽  
pp. 186-195 ◽  
Author(s):  
Thais Ayres Rebello ◽  
Robson Zulcão ◽  
João Luiz Calmon ◽  
Ricardo Franci Gonçalves

Owing to the cost of destination and transportation of ornamental stone processing waste, many studies focused on the reuse and recycling of this product. However, there is a scarcity of articles addressing the environmental viability of the recycling of ornamental stone. In this context, this study comprehends a comparative life cycle assessment of ornamental stone processing waste and conventional materials: sand, clay and limestone filler. The modelling software used was SimaPro 8.3.0.0 with Ecoinvent 3.2 database, employing the ReCiPe H/H methodology for impact assessment. The results show that the recycling of ornamental stone processing waste is environmentally preferable, and the artificial drying alternatives, such as flash dryer and rotary dryer, have lower environmental impact than extracting and processing clay through atomisation methods and limestone filler production. The sensitivity analysis indicated that it is possible to transport the ornamental stone processing waste 37 km after processing, so it reaches the same environmental impact as sand extracted by dredging. On the other hand, an increase of 25% in the energy consumption incremented only 7% of the environmental impact owing to the Brazilian energy mix.


Author(s):  
Arindam Ghosh ◽  
Dibyendu Pal ◽  
Amitava Biswas ◽  
S. K. Acharya

Waste is a ceaselessly developing issue at worldwide and territorial just as at neighborhood levels. Due to vigorous globalization and product proliferation in recent years, more waste has been produced by the soaring manufacturing activities. The social ecology of waste recycling implies the structural, functional and managerial intervention of waste generation process. The specific objective of the research was to isolate and identify the system variables characterizing and the management of waste recycling process and to estimate intra and inter level of interaction amongst and between the variables for respective, inductive and interactive contribution. The present study takes a look into the approach, process and impact of ongoing waste management process, followed by the both kalyani and jalpaiguri municipalities. A set of agro-ecological, socio-economic and techno managerial factors have been developed by selecting  two sets of operating variables: Independent Variables: Age(x1), Education(x2), Family member(x3), Total cost of energy(x4), Household land(x5), Income(x6),  Expenditure of family(x7), Volume of waste generation per household(x8), Water consumption per day(x9), Total bio diversity(x10), Impact of waste management on health(x11), Impact of waste management on agriculture(x12), Impact of waste management on livestock(x13), Impact of waste management on water(x14),  Impact of waste management on soil(x15), Impact of waste management on micro flora and fauna(x16), Exposure to media(x17),Training received(x18), Participation on waste recycling programmer (x19), Perception on environmental impact of waste management(x20), Waste management at household level with value addition by percentage (x21a), Waste management at household level with value addition by percentage (x21b). Dependent variables: Volume of waste used for different purposes (y1). The following independent variables have come out with stark contribution on this consequent variable. Result suggested that in terms of variable, behavior and responses there have been stark differences between jalapaiguri and kalyani municipal areas. In kalyani, some few variables like perception of environmental impact on waste management, waste management at household level with value addition by percentage, impact of waste management on agriculture have recorded the distinct contribution on volume of waste used for different purposes and in jalpaiguri total household land, volume of waste generation from household, water consumption per day have gone in the determinant way. So, in kalyani and jalpaiguri municipal areas these variables have maximum influence on the dependent variable. Household wastes mostly are bio degradable in nature. It can be converted to organic manure which has a great nutritional value for plants and if these bio wastes can be converted into organic manure then amount of waste will be reduced. Not only bio waste but we can use non bio degradable wastes for energy production also.


2021 ◽  
Vol 32 (10) ◽  
pp. 24-27
Author(s):  
Danyelle Andrade Mota ◽  
◽  
Laiza Canielas Krause ◽  
Cleide Mara Faria Soares

The valorization of coffee processing waste by producing products with high added value is a promising approach toward a circular bioeconomy. Crude coffee silverskin oil can be directly used in enzymatic hydrolysis catalyzed by non-specific lipases or sn-1,3 regioselective lipases. Converting coffee silverskin oil into free fatty acids or enriched polyunsaturated fatty acids in the form of acylglycerols with promoting properties can reduce the environmental impact and increase the profitability of the coffee industry.


Author(s):  
M.V. RYLNIKOVA ◽  
◽  
D.N. RADCHENKO ◽  
M.V. TSUPKINA ◽  
A.E. KIRKOV ◽  
...  

The problem of developing gold deposits in the southern Urals from the point of view of assessing the environmental impact on the vegetation cover and living organisms of mountain territories is considered. The analysis of scientific papers devoted to such topics in the world is carried out. It is confirmed that long-term storage and storage of mining waste in existing and decommissioned storage facilities, represented by waste from ore processing, causes serious environmental damage to the environment in the areas of their location and adjacent territories. This is evidenced by high concentrations of toxic chemical elements in technogenic mineral raw materials, soil layer, vegetation cover and organs of living organisms, which is due to the removal of heavy metals from a large area of technogenic formations, along with dust and drainage drains. It is proved that these factors must be taken into account when assessing the level of environmental impact of gold-containing ore processing waste on the environment.


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