Modeling studies for adsorption of phenol and co-pollutants onto granular activated carbon prepared from olive oil industrial waste
سال انتشار: 1397
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 287
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شناسه ملی سند علمی:
JR_AET-4-1_003
تاریخ نمایه سازی: 22 تیر 1398
چکیده مقاله:
Granular activated carbon (OSAC) which was derived from olive oil industrial solid waste was chemically activated with different concentrations of phosphoric acid. OSAC-materials were evaluated for their ability to remove phenol from aqueous solution in a batch technique. Adsorption isotherms were determined and modeled with five linear Langmuir forms, namely the Freundlich, Elovich, Temkin, Kiselev and Hill-de Boer models. The experimental data for the adsorption of phenol onto OSAM-materials were fitted well with the Langmuir-1 and 2, Freundlich, Kiselev and Hill-de Boer models. Adsorption was carried out on energetically different sites as localized monolayer adsorption and was an exothermic process. The uptake of phenol onto OSAC increased in the following order: OSAC-80%> OSAC-70%> OSAC-60%; the maximum adsorption capacities of phenol were found to be 114.416, 125.628 and 262.467 mg/g onto OSAC-60%, OSAC-70% and OSAC-80%, respectively. On the other hand, OSAC-80% was used as a good adsorbent for the removal of phenol and Cd2+ as co-pollutants from waste aqueous solutions. 80.25% of phenol and 50.66% of Cd2+ can be simultaneously removed by OSAC-80%.
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نویسندگان
Gehan Sharaf
Radioactive waste management department, Hot Lab. center,Egyptian atomic energy authority, Cairo,Egypt.
Ezzat Abdel-Galil
Environmental Radioactive Pollution Department, Hot Laboratories Center, Atomic Energy Authority, Cairo, Egypt.
Yasser El-eryan
Environmental Radioactive Pollution Department, Hot Laboratories Center, Atomic Energy Authority, Cairo, Egypt.
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