Shirin Shahraki - Ph.D. Student, Geology, Sedimentology and Sedimentology, Islamic Azad University, Zahedan
MohammadReza Noora - Department of Geology, Zahedan Branch, Islamic Azad University, PO Box ۹۸۱۳۵-۹۷۸, Zahedan, Iran
Jilla Saffari - Department of Chemistry, Zahedan Branch, Islamic Azad University, PO Box ۹۸۱۳۵-۹۷۸, Zahedan, Iran
Kazem Shabani Goraji - Department of Geology, Zahedan Branch, Islamic Azad University, PO Box ۹۸۱۳۵-۹۷۸, Zahedan, Iran

The removal of chloride ion from wastewater treatment effluents was studied using clay minerals as a biological absorbent through the UV / Vis technique. The influential variables were studied on absorption including; rotation speed (rpm 100, 120, 150, 180 and 210), temperature (25, 30, 35 and 40 degrees Celsius), grain sizes (meshes> 200, 350-200, 500- 350, <500), pH of the solution (2, 4, 6, 8 and 10), adsorbent amount (100, 150, 300, 200, 400 and 600 mg) and contact time of the absorber and absorbent (15, 20, 30, 45, 60, 120 and 180 minutes). The optimum values of the rotation(al) speed, temperature, grain size, absorbent amount and the contact time of Malek-Siah-Kouh were estimated at 100rpm, 40 ° C,200- 325, 400 and 15 min, respectively. Furthermore, the optimum values of the rotation(al) speed, temperature, grain size, absorbent amount and the contact time of Hormak were estimated at100rpm, 30 ° C, <500, =2pH, 100 mg and 15 min, respectively

the removal of chloride ion, clay minerals, UV/Vis, spectrophotometer