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Algal biosorbent as a basic tool for heavy metals removal; the first step for further applications
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نویسنده
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el-wakeel shaimaa t. ,moghazy r. m. ,labena a. ,husien sh.
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منبع
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journal of materials and environmental science - 2019 - دوره : 10 - شماره : 1 - صفحه:75 -87
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چکیده
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Great attention has been received for heavy metal removal by algae due to their good performance, low cost and large available quantities. in the present work, cu^2+ as an example of heavy metal ions was investigated for removal using two macro-algal biomasses ulva fasciata and sargassum dentifolium. the two algal biomasses were collected, washed, dried and grinded using ball mill to get micro- size powders. the prepared biosorbent materials were characterized using ft-ir (fourier transformed infrared spectroscopy), transmission electron microscopy (tem) and dynamic light scattering (dls). adsorption experiments were performed at different parameters ph, contact time, biosorbents dose and initial cu^2+ concentration. furthermore, adsorption isotherms; langmuir, freundlich, dubinin–radushkevich and modeling kinetics were studied. the biosorption by both ulva and sargassum biosorbent materials achieved at ph 4, 30 and 60 minutes, respectively and 0.5 g/l biosorbent dose. the maximum adsorption capacities, according to langmuir model, were achieved at 250 and 125 mg/g for ulva and sargassum biosorbent materials, respectively. the adsorption process followed the pseudo-second-order kinetic model. moreover, this work has represented one of the established papers that direct further work plans toward the application of the algal biosorbent for heavy metals removal.
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کلیدواژه
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Algal biosorbent ,Seed oil ,Fatty acids distribution ,Gunstone theory ,Triglycerides
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آدرس
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national research centre (nrc), water pollution research department, Egypt, national research centre (nrc), water pollution research department, Egypt, egyptian petroleum research institute (epri), Egypt, beni-suef university, faculty of postgraduate studies for advanced sciences, Egypt
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Authors
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