scholarly journals Design of an engineered landfill as possible replacement for an existing dump at Akure, Nigeria

Author(s):  
O.O. Ojuri ◽  
T.O. Ajijola ◽  
I. I. Akinwumi
Keyword(s):  
Author(s):  
Kriti Jain ◽  
Chirag Shah

The increasing volume and complexity of waste associated with the modern economy as due to the ranging population, is posing a serious risk to ecosystems and human health. Every year, an estimated 11.2 billion tonnes of solid waste is collected worldwide and decay of the organic proportion of solid waste is contributing about 5 per cent of global greenhouse gas emissions (UNEP). Poor waste management - ranging from non-existing collection systems to ineffective disposal causes air pollution, water and soil contamination. Open and unsanitary landfills contribute to contamination of drinking water and can cause infection and transmit diseases. The dispersal of debris pollutes ecosystems and dangerous substances from waste or garbage puts a strain on the health of urban dwellers and the environment. India, being second most populated country of the world that too with the lesser land area comparatively, faces major environmental challenges associated with waste generation and inadequate waste collection, transport, treatment and disposal. Population explosion, coupled with improved life style of people, results in increased generation of solid wastes in urban as well as rural areas of the country. The challenges and barriers are significant, but so are the opportunities. A priority is to move from reliance on waste dumps that offer no environmental protection, to waste management systems that retain useful resources within the economy [2]. Waste segregation at source and use of specialized waste processing facilities to separate recyclable materials has a key role. Disposal of residual waste after extraction of material resources needs engineered landfill sites and/or investment in waste-to-energy facilities. This study focusses on the minimization of the waste and gives the brief about the various initiations for proper waste management system. Hence moving towards the alternatives is the way to deal with these basic problems. This paper outlines various advances in the area of waste management. It focuses on current practices related to waste management initiatives taken by India. The purpose of this article put a light on various initiatives in the country and locates the scope for improvement in the management of waste which will also clean up the unemployment.


2009 ◽  
Vol 29 (9) ◽  
pp. 2509-2517 ◽  
Author(s):  
S. Ait-Benichou ◽  
Louis-B. Jugnia ◽  
Charles W. Greer ◽  
Alexandre R. Cabral

2013 ◽  
Vol 39 (3) ◽  
pp. 115-126 ◽  
Author(s):  
Yucheng Cao ◽  
Ewelina Staszewska

Abstract Uncontrolled emissions of landfill gas may contribute significantly to climate change, since its composition represents a high fraction of methane, a greenhouse gas with 100- year global warming potential 25 times that of carbon dioxide. Landfill cover could create favourable conditions for methanotrophy (microbial methane oxidation), an activity of using bacteria to oxidize methane to carbon dioxide. This paper presents a brief review of methanotrophic activities in landfill cover. Emphasis is given to the effects of cover materials, environmental conditions and landfill vegetation on the methane oxidation potential, and to their underlying effect mechanisms. Methanotrophs communities and methane oxidation kinetics are also discussed. Results from the overview suggest that well-engineered landfill cover can substantially increase its potential for reducing emissions of methane produced in landfill to the atmosphere.


2015 ◽  
Vol 27 (3) ◽  
pp. 500-510 ◽  
Author(s):  
Ming Hung Wong ◽  
Yuk Sing Gilbert Chan ◽  
Chaosheng Zhang ◽  
Charles Wang‐Wai Ng

Desalination ◽  
2010 ◽  
Vol 250 (1) ◽  
pp. 373-377 ◽  
Author(s):  
P. Kostopoulou ◽  
A. Karagiannidis ◽  
P. Rakimbei ◽  
K. Tsiouvaras

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