Possible of arsenic removal from environment using aquatic plants in north of Khuzestan
Subject Areas :Ali Shir-Afroos 1 , Abdolmajid Liaghat 2 , Mohammad Manshoori 3 , Ebrahim Pazira 4 , Hosein Sedghi 5
1 - استادیار گروه مهندسی آب دانشگاه ازاد اسلامی واحد دزفول
2 - استاد گروه مهندسی آبیاری و آبادانی دانشگاه تهران
3 - استادیار گروه آبیاری دانشگاه آزاد اسلامی واحد علوم و تحقیقات تهران
4 - دانشیار گروه خاکشناسی دانشگاه ازاد اسلامی واحد علوم و تحقیقات تهران
5 - استاد گروه آبیاری دانشگاه آزاد اسلامی واحد علوم و تحقیقات تهران
Keywords: Dezful, Arsenic, wastewater, Removal Efficiency, Phragmites, Scirpus,
Abstract :
Ability of aquatic plants as a tool for environmentally friendly municipal, industrial and agricultural wastewatertreatment has been attracted to attention in the world. In this study the possibility of absorption of arsenic andheavy metal contaminated industrial wastewater treatment to this metal has been studied by four species ofaquatic plant Phragmites australis, Typha latifolia, Scirpus bulrush and Alisma plantago. Therefore, through thefirst pot experiment and infect cultured at three different levels of arsenic in three replicates in 60-day period, inthe form of a completely randomized design. Results showed that Phragmites sp. and Scirpus sp. were highaccumulation of arsenic, with 119.55 and 65.25 mg/kg of dry matter at the end of plant growth period,respectively in underground organs. Accumulation in the underground organs showed significant difference withaccumulation in the shoot. The two species chosen at this stage were planted in constructed ponds withdimensions 5 m long, 0.5 m wide and 0.4 m height with the isolation bed and their drainage tubes placing. Apond was conducted as a control (no plant) and intended to test the effect of system type and retention time(retention time of five 1, 3, 7, 10 and 14 days) on arsenic removal efficiency at the level of 100 mg/kg soilpollution in three replications. The results of this section showed that the effect of system type and retention timeon the removal efficiency of constructed was significant but not for interaction effect of two factors.
