It is shown in this paper that the estimates of technical efficiency, scale economies, and the shadow prices of bad outputs for polluting firms in India are sensitive to the specification of technologies and environmental regulation. The output and input distance functions with the assumption of weak disposability of bad outputs account for the effect of environmental regulation on the producti...

The low-grade rock phosphate of Jhabua, Madhya Pradesh (India), was investigated for its possible application in the removal of lead, copper, zinc and cobalt ions from aqueous solutions. Effects of contact time, amount of adsorbent and initial concentration of metal ions were studied. Adsorption of heavy metal ions was found to follow the order: Pb2+ > Cu2+ > Zn2+ > Co2+. The probable mechanism...

Theory: Scholars have long acknowledged that regulations based on price mechanisms are the most efficient means of pollution abatement, yet environmentalists have tended to oppose them in favor of quantity restrictions. The conventional explanation that environmentalists are either uninformed or behaving irrationally when they oppose the market underestimates their capacity to act in their own ...

Non-point source pollution, such as nutrient runoff to waterways from agricultural production, is an environmental problem that typically involves asymmetric information. Land use changes to reduce pollution incur opportunity costs that are privately known to landholders, but these changes provide environmental benefits that may be more accurately estimated by regulators. This paper reports a t...