No abstract

Pollution is a global phenomenon, which has been proven responsible for countless untold havoc to the environment and ecosystem at large resulting into global warming, climate change, deterioration of the ecosystem, and scarcity of resources. Industrial activities have as a whole been proven to be an ardent contributor to the global menace of environmental pollution worldwide, with a contribution percentage of 61%, and the cement industry in particular has been ranked as the third most polluting in the industrial sector. As countries look towards a more sustainable future, radical gains and changes have been necessitated in the industry, and though strides have been made in terms of energy consumption with 6% gains and emission reduction between 20-40% gains, yet pollution is still on the rise in the industry. This review paper delves into the subject matter and examines the underlying links between pollution rise and industrialization and then the cement industry; key correlations, the current and potential gains made, current and future projections and the factors facilitating the increased rate of pollution in the cement industry.

A photochemical investigation and synergetic blend for wastewater purification was carried out. Blends of different peels: Potato-, Apple and Pineapples-peals (PAP-peals) were impregnated with aqueous solutions of ZnCl 2 following the variant of the incipient wetness method for activation of activated carbon (AC). Different concentrations were used to produce impregnation ratios. Activation was carried out in a tube furnace by heating to 700 with 1 hour soaking time. Scanning Electron Microscopic with attached energy dispersive spectrometer (SEM/EDS), Atomic Adsorption Spectrometry (AAS) and Fourier Transform Infrared spectrometer (FTIS) equipments were used for the characterization of the AC produced. The result shows that PAP-peals derived activated carbons had micro porous characteristics. The study revealed that these new combined adsorbents materials are inexpensive, easily available and they have applications for the removal of Cu, Pb and Cr contained in industrial effluents.