Treatment of Leather Industry Wastewater and Recovery of Valuable Substances to Solve Waste Management Problem in Environment

Author(s):  
Manish Chandra Kannaujiya ◽  
Tamal Mandal ◽  
Dalia Dasgupta Mandal ◽  
Monoj Kumar Mondal
2021 ◽  
Author(s):  
Steven De Meester ◽  
Benson Dulo ◽  
John Githaiga ◽  
Katleen Raes

Abstract In Kenya, agriculture is an important economic activity, which implies that a significant amount of bio-waste is generated. This is on one hand a waste management problem, but on the other hand, it is an opportunity for creating a sustainable bioeconomy. Therefore, this study investigates the potential recovery of bioresources from Kenyan bio-waste. The study first quantifies occurrence, current usage and disposal of three selected biomass types, being banana, potato and coconut waste. Next, material flow analysis (MFA) is used to systematically track the mass flow of these wastes. Finally, the potential of biomolecules, biomaterials and bioenergy from the waste streams is evaluated. The study revealed that 6007, 426 and 49.5 kt of banana, potato and coconut biomass is wasted. All these wastes can be biorefined, offering potential towards recovery of; flavonoids (88.3 kt), starch (377 kt), cellulose (2000.7 kt) and biogas (1757.0 GWh), being the total potential of the main bioresources from the three waste streams. The study therefore, concluded that, with proper waste collection, sorting and valorisation, there is a huge potential for bioeconomy in Kenya, at the same time reducing waste management problems.


Author(s):  
Janine Jones

One way of understanding the white man’s burden is as a waste management problem. The White West abjected Africans and people of African descent, thereby enacting and enabling their perception and treatment as a form of waste. The value of black waste to white Western economies is discernable in the metaphysics of a white imaginary of black abjection. It is necessary to elucidate that metaphysics, which reveals the structure of a humanist discourse that imagines black bodies as alienated from language, and the degradation entailed by such alienation. For example, when Africana people today chant “Black lives matter,” they do so against the historical perception and treatment of black people as waste.


2019 ◽  
Vol 127 ◽  
pp. 99-110 ◽  
Author(s):  
Parimal Pal ◽  
Moumita Sardar ◽  
Madhubonti Pal ◽  
Sankha Chakrabortty ◽  
Jayato Nayak

2010 ◽  
Vol 180 (1-3) ◽  
pp. 204-211 ◽  
Author(s):  
Tamal Mandal ◽  
Dalia Dasgupta ◽  
Subhasis Mandal ◽  
Siddhartha Datta

1985 ◽  
Vol 2 (3) ◽  
pp. 186
Author(s):  
M.R. Brett-Crowther

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