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Leachate from mixed glass cullet (crushed recycled glass containers) that is stockpiled before use as construction aggregate or sand substitute is a potential source of water pollution. Rainwater leaching through the stockpiles dissolves and suspends organic compounds and nutrients from the glass. The objectives of this study were to investigate the effect of forced aeration on leachate quantity and quality in the glass cullet stockpiles compared to mechanical turning/mixing. Three experimental stockpiles were set up in the field, two with forced aeration treatment (one with fine and the other with coarse cullet) and one (coarse cullet) with mechanical turning. The organic concentrations in the leachate in most cases were comparable to those of raw domestic wastewater. Organic constituents (e.g., BODs) were reduced by>?0% from the initial levels ( ~450 mg [L.sup.-1]) during a 1.5-month period with forced aeration, compared to an 85% decrease in the turned stockpile. Particle size affected temperature and oxygen levels under aeration conditions, resulting in more biodegradation of organic contaminants in the stockpile of coarse cullet than the fine cullet. DOI: 10.1061/(ASCE)EE.1943-7870.0000183 CE Database subject headings: Solid wastes; Waste management; Recycling; Water quality; Stormwater management. Author keywords: Aeration; Glass; Composting.

The composition of material excavated from the Burlington County landfill in New Jersey was determined, and the major reclaimed tractions characterized. Based on a waste age map. 98 samples (80 kg each) collected from 13 gas extraction well borings were handsorted into 14 fractions and fines ( CE Database subject headings: Landfills; Solid wastes; Refuse disposal; New Jersey; Waste management.

Researchers who analyzed the bacterial content of the wastewater treatment reactors being used in the Lunar-Mars Life Support Test Project at Johnson Space Center found mostly Proteobacteria, low-G+C gram-positive bacteria, and the Cytophage-Flexibacter-Bacteroides group. They also found 57 new 16S rRNA genes, 8 new ammonia monooxygenase genes, and 12 new nitrous oxide reductase genes.

This extremely wide-ranging book is intended for an introductory environmental course for undergraduates. Eight of the 16 chapters were written by either one or both of the two principal authors, [...]