This paper presents the recovery of copper from a Nigerian low-grade ore containing 4.08 wt. % Cu via nitric acid leaching, followed by solvent extraction using soybeans oil fatty extractant. The leaching tests on milled were done according to 3-factor Central Composite Design with time, concentration and temperature as selected process variables. Regression models developed experimental data f...

Depleting oil reserves and growing environmental concerns have necessitated the development of sustainable processes to fuels and chemicals. Here we have developed a general metabolic platform in E. coli to biosynthesize carboxylic acids. By engineering selectivity of 2-ketoacid decarboxylases and screening for promiscuous aldehyde dehydrogenases, synthetic pathways were constructed to produce ...

Single and ternary solute gas phase adsorption isotherms were conducted in this study to evaluate the effectiveness of a simple constant volume method, which was utilized by using Tedlar gas sampling bags as a constant volume batch reactor. For this purpose, gas phase adsorption of toluene, methyl ethyl ketone (MEK), and methyl isobutyl ketone (MIBK) on two types of activated carbons, BPL-bitum...

Detection and separation of metals from fresh water and industrial effluents has become a pre-requisite for any nation in the world. In and around the city of Hyderabad (Sindh), Pakistan, the home as well as cottage industry which consumes chemicals containing the copper, mercury, cadmium and lead are freely dumped into local ravines and canals unchecked for many years. The process is polluting...