NOVELTY - Treatment of a saline water involves: treating the water to adjust the salinity and produce treated water having a predetermined salinity level; and directing at least a portion of the treated water having predetermined salinity level to a bioreactor housing a microalgae for generating biomass; where predetermined salinity level of the treated water is predicated by the specie of microalgae housed in the bioreactor.    USE - For treating a saline water for producing fuel products (claimed) or biofuel such as biodiesel and in agriculture and forestry, particularly the farming of saline tolerant plants.    ADVANTAGE - The process reduces the environmental impact of waste water, such as that generated from desalination operations and provides a way for economically using high salinity water obtained from other sources. Furthermore, the process provides for significant energy savings compared with current reverse osmosis (RO) technology. For example, the present systems have an energy consumption of 20-30%, in some instances as low as 10%, of that seen in conventional RO plants. Moreover, the process recovers up to 80% of the processed water as potable water that can be recycled back to the community for use.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) producing a biomass involving: feeding a saline water to a treatment unit; treating the saline water to adjust the salinity and produce treated water having a predetermined salinity level; directing at least a portion of the treated water having predetermined salinity level to a bioreactor housing a microalgae for generating biomass, where predetermined salinity level of the treated water is predicated by the specie of microalgae housed in the bioreactor; and collecting the biomass from the bioreactor; and    (2) a system for producing biomass comprising: a treatment unit for adjusting the salinity of a saline water feed to produce treated water having a predetermined salinity level; at least one bioreactor in fluid communication with the treatment unit and housing a microalgae for generating biomass, where predetermined salinity level of the treated water is predicated by the specie of microalgae housed in the bioreactor; and a collector for harvesting and collecting the biomass generated in the at least one bioreactor.    DESCRIPTION OF DRAWING(S) - The figure shows a flow chart illustrating a processing route for mineral recovery and saline water quality adjustment for various algae species.