The paper presents the results of two full-scale applications of the anaerobic co-digestion process of waste activated sludge together with the organic fraction of municipal solid wastes. The experiences were carried out at Viareggio and Treviso wastewater treatment plants (Italy). In the first plant, 3 tons per day of source sorted OFMSW were co-digested with waste activated sludge, increasing...

All-organic-based photovoltaic solar cells have attracted considerable attention because of their low-cost processing and short energy payback time. In such systems the primary dissociation of an optical excitation into a pair of photocarriers has been recently shown to be extremely rapid and efficient, but the physical reason for this remains unclear. Here, two-dimensional photocurrent excitat...

I will not be too long before rooftop solar panels will become a preferred option for new construction of houses in the U.S. and elsewhere. Many recent projections of new energy installations predict a surge in wind and photovoltaic (PV)based installations during the next 25 years. The availability of affordable PV panels is rendering the installation of solar panels on residential rooftops a m...

Poultry farms for meat or egg production is considered to be a huge business. However, waste including manure can give biogas that can produce electricity. In Pakistan load shedding problem remains throughout the year, therefore biomass being the cheap and efficient fuel for power generation can overcome this problem. This research has been conducted in Abbottabad district of Khyber Pakhtunkhwa...

Numerous studies have estimated the optimum thickness of thermal insulation materials used in building walls for different climate conditions. The economic parameters (inflation rate, discount rate, lifetime and energy costs), the heating/cooling loads of the building, the wall structure and the properties of the insulation material all affect the optimum insulation thickness. This study focuse...

A key enabler of environmental projects is the ability of the project champion to gain commitment to the project from other stakeholders in his or her organization. This paper develops a model of commitment-gaining success that is based on intra-organizational influence theory. The model also includes the project payback, customer pressure, government regulation, top management support and the ...

Using panel data on investment of firms in energy saving technology, we measure the impact of the payback period of the technology on the probability to adopt the technology in the absence of tax and subsidy incentives. We find that the decision rules to adopt energy saving technology differs substantially between different types of firms, i.e. for-profit/notfor-profit as the decision to adopt ...

This study aims to develop an economic evaluation method for installing photovoltaic power generation in ordinary homes using GIS (Geographic Information Systems). The conclusions can be summarized in the following three points: 1) This method determines the profit and loss and payback period in order to evaluate the installation of photovoltaic power generation, taking into account the price o...

Maedi Visna (MV) has been identified as a common viral infection in Ontario sheep. The Maedi Visna Flock Status Pilot Project (MVFSP) sets a protocol for control and eradication of this disease. A static normative model was designed to measure the economic benefit of such a program. Of the 16 producers enrolled on the program in 2002, 15 cooperated and were surveyed. Two benefits were identifie...

During the September 23, 2004 Board hearing on the proposed AB 1493 regulation, a representative of Sierra Research, Inc. (SRI) commented that the Air Resources Board (ARB) staff had overestimated the miles traveled (VMT) in a vehicle’s average lifetime. The assertion was that this had in turn resulted in an overestimation of lifetime fuel savings and an underestimation of the payback period fo...