IJE TRANSACTIONS B: Applications - Special Issue - Sustainable Technologies for Water and Environment; Guest Editor Prof. Dr. Ahmad Fauzi Ismail and Associate Guest Editor Dr. Lau Woei Jye, Universiti Teknologi Malaysia (UTM), Malaysia
Vol. 31, No. 8 (August 2018) 1373-1380    Article in Press

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N. Othman, R. N. Raja Sulaiman and M. H. Ahmad Daud
( Received: December 11, 2017 – Accepted: March 21, 2018 )

Abstract    This research addresses the extraction and recovery of nickel ions from real electroplating wastewater using SLM process. The process involves three main phase system which are feed, organic and stripping phase. The feed phase containing the nickel electroplating wastewater whereas the organic phase containing the liquid membrane which was immobilized in the membrane support. The liquid membrane was prepared by dissolving certain concentration of D2EHPA in kerosene which acts as a carrier and diluent, respectively. Meanwhile, the membrane support employed was commercial polypropylene membrane with features of 0.1 mm thickness, 70% porosity and 0.10 µm effective pore size. On the other hand, the stripping phase consisting of sulfuric acid (H2SO4) solution which acted as a stripping agent. Parameters such as carrier and stripping agent concentration and feed phase flowrate were examined to obtain the best condition for the extraction and recovery efficiency of nickel. The results revealed that about 44 and 55% of nickel ions have been successfully extracted and recovered, respectively at the best conditions of 1.0 M of D2EHPA, 3.0 M of H2SO4 and 70 ml/min flowrate of feed phase.


Keywords    Extraction, recovery, nickel, wastewater, supported liquid membrane



این تحقیق به استخراج و بازیافت یون های نیکل از آبکاری حقیقی پساب با استفاده از فرایند غشاء مایع تقویت شده (SLM) می پردازد. این فرایند شامل سه مرحله اصلی سیستم است که مراحل خوراک، ارگانیک و خارج سازی می باشند. مرحله خوراک عبارتند از آبکاری نیکل پساب درحالیکه مرحله ارگانیک عبارتند از غشاء مایع که در غشاء کمکی تثبیت شد. غشاء مایع با حل کردن غلظت مشخصی از D2EHPA در کروسن آماده شد که به ترتیب به عنوان حامل و رقیق کننده عمل می کنند. در این میان، غشاء کمکی استفاده شده، غشاء پلی پروپیلن تجاری با مشخصات ضخامت µm۱۰۰، تخلخل ٪۹/۷۱ و اندازه منافذ مؤثر µm ۱۰/۰ بود. از طرف دیگر، مرحله خارج سازی شامل محلول اسید سولفوریک (H2SO4) بود که به عنوان ماده خارج کننده عمل کرد. شاخص هایی مانند غلظت ماده خارج کننده و حامل و شدت جریان مرحله خوراک، به منظور به دست آوردن بهترین شرایط استخراج و بازده بازیافت نیکل سنجیده شدند. نتایج نشان دادند که در بهترین شرایط M۰/۱ از D2EHPA، M ۰/۳ از H2SO4 و شدت جریانml/min ۷۰ در مرحله خوراک، به ترتیب حدود ۴۴ و ٪۵۵ از یون های نیکل با موفقیت استخراج و بازیافت شده اند.


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