Using waste materials to replace a fraction of cement in concrete is economical. In this work, cement pastes and mortars were fabricated with five different kinds of unsaturated biochars such as bagasse biochar, coconut husk biochar, peanut husk biochar and wheat husk biochar etc at a dosage rate of 1-5 wt % relative to cement. The CO2 adsorption capacity of biochars was estimated to be in the range of 1.25–1.72 mmol/g. Characterizations include XRD, FTIR, SEM, and Raman spectroscopy analyses

Seawater desalination plants have been powered by low-grade energy sources, drawn either with low-pressure bled-steam from steam turbines or the solar renewable energy harvested that are supplied at relatively low temperatures. Despite the increasing trend of seawater reverse osmosis plants, the role of thermal desalination methods and multi-effect distillation) in GCC countries is still relevant in the Arabian Gulf, arising from higher salinity, the frequent algae blooms of seawater ...........