Residence time is a critical factor in determining the size of an open face biofilter. Four test biofilters were constructed with media comprised of yard waste compost and brush chips to compare 8 s. and 4 s. residence time. Biofilter performance was monitored for ten months by measuring pressure drop, moisture content, odor threshold, hydrogen sulfide, and ammonia concentrations. Odor reductio...

About the author: Anna Sher is assistant professor of biological sciences at the University of Denver and director of research, herbaria, and records at the Denver Botanic Gardens. 47 We’ve all heard how bad invasive plants are, how they crowd out wildflowers, waste our precious water, and poison our livestock. Scientists in Colorado and Montana made news in science not long ago for presenting ...

The University of Hertfordshire, in collaboration with two UK agricultural establishments are developing a decision support system for environmental management in arable agriculture. The system aims to encourage and promote best practice. Significant environmental effects from arable agriculture arise from the use of fertilisers, pesticides and unsustainable soil management practices. The softw...

JAVMA, Vol 234, No. 9, May 1, 2009 M emerging and reemerging human pathogens are derived from animals or from animal tissues, waste, or products. A wide range of species including insects (eg, mosquitos), wild animals (eg, rodents, bats, and monkeys), draft animals (eg, horses and mules), and livestock animals (eg, swine, poultry, and cattle) have been implicated in transmission of various high...

Liquid livestock waste can be managed by separating liquid and solid fractions then treating each separately by applying best available technology, such as anaerobic digestion for the solid fraction. There is an increasing use of polyacrylamide (PAM) as a flocculant agent to improve solid-liquid separation. In the present work, the anaerobic toxicity of PAM residues and the optimal range of tot...

Feather keratin is highly resistant to degradation, but some keratinase producing microorganisms can easily degrade these insoluble keratins. These keratinase producing species have an important application in removal of poultry waste and recycled into valuable byproduct. Bacillus sp was screened from soil samples of slaughterhouse and poultry farm area using azokeratin medium. Highest keratina...

This paper attributes the variation in water quality across Irish lakes to a range of contributory factors such as human population, septic tanks, urban waste water treatment, phosphorous excreted by livestock, as well as catchment soil and geology. Both linear and non-linear quadratic models were estimated in the analysis, which attempts to account for point and non-point sources of pollution ...

Agricultural wastes as additive within raw earth materials could both improve mechanical and physical properties of new sustainable construction enhance waste management in a circular economy perspective. This study intends to fill the lack knowledge considering effects animal fibers on rammed materials. The livestock waste, i.e., sheep wool fiber (SWF), reinforcing element building components ...

North Labuhanbatu Regency is one of the districts in Sumatera that has potential development livestock. This research aims to find out agriculture and plantation waste as well areas can be used a area for goat sheep livestock Regency. The type descriptive describe determining using LQ methods combined with density, support index capacity increase ruminants population. was conducted February–Apr...

This study engaged key stakeholders in an economically and environmentally fragile region in Kenya in a unique, interdisciplinary, and integrative approach to explore the extent to which the use of smartphone technology helps access the environmental values and sustainability perspectives of the people of the Maasai land. The results of the study indicate that the participants’ environmental va...