Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : Desalination


Assessment of the DesalinationEffect on ShatAl-Arab

Mohammed I. Al-Hashimi; Falah Alnedawy

Engineering and Technology Journal, 2019, Volume 37, Issue 3C, Pages 385-390
DOI: 10.30684/etj.37.3C.13

The resource of the dulcet water decreasing on our plant. Obstacles and problems that face water resources are the pollution and increasing of industrial wastes because of the human activities, lack of water resources in a place is considered dryness on well as unacceptable quality and quantity. The effect of outstretch and tide in estuaries of rivers increase the concentration of the salt in surface water. The city of Basra suffers from the lack of water discharge and high concentration of salt , wastewater, and the salt wedge ascending from downstream of Shat al – Arab river. The water decrease in quantities due to the decrease of water discharge in Shat al –Arab river from 1300 m3 /s to 1000 m3 /s . Now the water discharge reaches less than 40 m3 /s by the end of 2015. Shat al – Arab river suffers from the shortage of incoming water from rivers, which cause increase of salinity. Proposals are made for resolving some of the questions.

Theoretical Study of the Effective Parameters for Direct Contact Membrane Distillation in Hollow Fiber Modules

Salah S. Ibrahim

Engineering and Technology Journal, 2014, Volume 32, Issue 12, Pages 2949-2969

The main object of this research is to study the parameters that have important effects upon performance of the direct contact membrane distillation (DCMD) process, through predicting the effects of the outside and inside diameters, the thickness of the hollow fiber membrane, the pore size, porosity, tortuosity, module length, number of fibers in module, inlet feed temperature, inlet feed concentration, inlet permeate temperature and the velocity of feed and permeate. The effective parameters that influence the performance of DCMD are classified into membrane characteristics, operating conditions, and parameters of module specifications. This study is based on an experimental system of Wang et al., 2008 [1] as typical system.It was found that theincreaseof the permeate fluxis by selecting an optimum thickness for each inside or outside diameter of hollow fibers and anoptimum number of fibers in the module and increasing the porosity and pore size within practical range and decreasing of tortusity andas well as increasing the inlet feed temperature rather than decreasing the inlet permeate temperature for constant temperature difference between feed and permeate. Also it is found that the feed concentration and fiber length play an inverse role with the permeate flux.

Experimental Study on Enhancement of Single-Basin Solar Still Using Dye Solutions

Kadhim H. S. AL-Zaedy

Engineering and Technology Journal, 2012, Volume 30, Issue 18, Pages 3112-3125

An enhancement of single slope solar still using different dye solutions was
studied experimentally. Single-basin solar still can be used for water desalination.
Probably, they are considered the best solution for water production in remote, arid to
semi-arid, small communities, where fresh water is unavailable. However, the amount
of distilled water produced per unit area is somewhat low which makes the singlebasin
solar still unacceptable in some instances. The purpose of this work is to study
the effect of using different dye solutions in a solar still, and thus enhance the
productivity of water. Experimental results show that the productivity of distilled water
was enhanced for some materials. Using Methyline Blue solution increased the daily
water productivity by 18%. While using Methyle Orange solution increased by 28 %.
Also the better efficiency of 74.3 % has taken when using Methyle Orange solution
compared with efficiency of 62.53 % when Methylene Blue solution was used while
the better efficiency is 58.89 % when only water used in still. Therefore it is
concluded the productivity of water still per unit area is increased when using dye
solutions as Methylene Blue solution and Methyle Orange solution.