Anaerobic digestion of source-separated municipal organic waste is considered feasible in Denmark. The limited hydraulic retention in the biogas reactor (typically 15 d) does not allow full degradation of the organic waste. Storage of anaerobically digested municipal organic waste can therefore be a source of methane (CH4) emission that may contribute significantly to the potential global warmi...

This paper examines the links between solid urban waste management and peri-urban agriculture in Bamako and Ouagadougou. Staple crop farmers in the vicinity of both cities value urban waste as a source of organic matter and are prepared to pay for it. Cultivation on degraded soils has even been revived in some cases thanks to this readily available resource. However, uncertain land tenure means...

Biofloc systems were developed to improve environmental control over production. In places where water is scarce or land is expensive, more intensive forms of aquaculture must be practiced for cost-effective production. There are strong economic incentives for an aquaculture business to be more efficient with production inputs, especially the most costly (feed) and most limiting (water or land)...

In this paper, we use stochastic dynamic programming to model the choice of a municipality which has to design an optimal waste management program under uncertainty about the price of recyclables in the secondary market. The municipality can, by undertaking an irreversible investment, adopt a ‡exible program which integrates the existing land…ll strategy with recycling, keeping the option to sw...

For the purpose of this document, long-term stewardship (LTS) is the federally implemented institutions, controls, information, and mechanisms necessary to protect the public and environment from legacy waste deemed impractical, unsafe, or too costly to remediate to freerelease standards. According to the U.S. Department of Energy’s (DOE) definition, LTS includes land use controls, monitoring, ...

The Environment Agency is the leading public body protecting and improving the environment in England and Wales. It's our job to make sure that air, land and water are looked after by everyone in today's society, so that tomorrow's generations inherit a cleaner, healthier world. Our work includes tackling flooding and pollution incidents, reducing industry's impacts on the environment, cleaning...

The ecological footprint (EF) commonly neglects the influence of other stressors than land use and CO2 emissions on the land area required for human activities. This study analyzes the relevancy of including nutrients and non-CO2 greenhouse gases in the EF assessment of products. The analysis was based on environmental information for 1,925 goods and services. Our findings suggest that within s...

The effects of calcium carbide waste on some groups of soil microorganisms and soil enzymes were studied using standard microbiological and biochemical techniques. Soil samples were collected from a vehicle maintenance area as well as from an adjacent farm land (control) during the dry and rainy seasons. The population of all the bacterial groups in the different seasons was affected adversely ...

Aiming at developing a simple and efficient collision detection method to support the wandering in equipment deploy scene in land reclamation area of mining dump. This paper presents an efficient algorithm for collision detection in the waste dump land reclamation equipment deploy scene using a bounding volume nestification which consists of an oriented bounding boxes (OBBs) enhanced with axial...

Land applications of manure from confined animal systems and direct deposit by grazing animals are both major sources of bacteria in streams. An understanding of the overland transport mechanisms from land applied waste is needed to improve design of best management practices (BMPs) and modeling of nonpoint source (NPS) pollution. Plots were established on pasturelands receiving phosphorus-base...