The threat of bacterial contaminants in water distribution systems and in the environment is of unremitting concern for environmental engineers. This problem is compounded by the overuse of antibiotics and the resulting increased prevalence of antibiotic resistant pathogens in engineered waste streams and hospital wastewater effluents. Through defects in sewer systems these pathogens are furthe...

Hydrothermal carbonization (HTC) is a novel thermal conversion process that can be used to convert municipal waste streams into sterilized, value-added hydrochar. HTC has been mostly applied and studied on a limited number of feedstocks, ranging from pure substances to slightly more complex biomass such as wood, with an emphasis on nanostructure generation. There has been little work exploring ...

Tanzania has a high rural population, of which many rely on off-grid diesel generators to produce electricity. The focus this paper is assess if the waste biomass residues in have sufficient energy potential renewable electrical for small-scale electricity generation using coupled with anaerobic digestion (AD) and/or gasification. gaseous fuel produced can then be used substitute dual gen-sets;...

Centralized collection and disposal is an integral component of waste management strategies for many solid and liquid wastes, and carbon capture and storage is currently being considered for gaseous waste. In this paper we show how collective waste disposal systems introduce essential changes in the design of optimal environmental policy. Absent collective disposal, an optimal environmental pol...

Acid gas removal from gaseous streams such as flue gas, natural and biogas is mainly performed by chemical absorption with amines, but the process highly energy intensive can generate emissions of harmful compounds to atmosphere. Considering emerging interest in carbon capture, associated increasing environmental concerns, there much current effort develop innovative solvents able lower impact ...

[1] Large Amazonian rivers are known to emit substantial amounts of CO2 to the atmosphere, while the magnitude of CO2 degassing from small streams remains a major unknown in regional carbon budgets. We found that 77% of carbon transported by water from the landscape was as terrestrially-respired CO2 dissolved within soils, over 90% of which evaded to the atmosphere within headwater reaches of s...

A device for ejecting several streams based on the flow of a stream in slit gap and designed mixing liquid gaseous media is considered

Computational fluid dynamic (CFD) analysis of the thermal flow in the combustion chamber of a solid waste incinerator provides crucial insight into the incinerator's performance. However, the interrelation of the gas flow with the burning waste has not been adequately treated in many CFD models. A strategy for a combined simulation of the waste combustion and the gas flow in the furnace is intr...