Removal of Some Organic Dyes by Hexane‐Extracted Spent Bleaching Earth
نویسندگان
چکیده
منابع مشابه
Reuse of spent bleaching earth by polymerisation of residual organics.
Spent bleaching earth (SBE) is a waste generated by the edible oil industry that currently has limited options for beneficial reuse. In excess of ∼2 million tonnes per year of SBE is generated world-wide with major quantities available in the middle-east where significant volumes of edible oils are produced. Low pressure compaction followed by heat treatment at 150°C causes polymerisation of th...
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The adsorption of basic dye (i.e., ethyl violet or basic violet 4) from aqueous solution onto the regenerated spent bleaching earth (RSBE) was carried out by varying the process parameters such as initial concentration, pH, and temperature. As analytical comparisons, activated bleaching earth (ABE) was also used as adsorbent for the adsorption of the basic dye at various initial concentrations....
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In the present study, activated bleaching earth was used as clay adsorbent for an investigation of the adsorbability and adsorption kinetics of acid dyes (i.e., acid orange 51, acid blue 9, and acid orange 10) with three different molecular sizes from aqueous solution at 25 degrees C in a batch adsorber. The rate of adsorption has been investigated under the most important process parameters (i...
متن کاملRecycling process of spent bleaching clay: Optimization by response surface methodology
Oil refining is an inevitable step in production of edible and industrial oil. Bleaching is the most important process among the refining processes. Bleaching adsorption is the most common method and clay is the most widely used adsorbent in this method. Disposal of bleaching clay, as a waste from re-refining plants, makes many environmental problems and economic losses. In the current study, t...
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Background & objectives: Nitroanene compounds and toxic dyes are considered major pollutants in sewage of various industries. These synthetic organic compounds are highly toxic and one of the most resistant pollutants in the environment. Developing a simple and effective method to destroy non-biodegradable pollutants into non-hazardous products is one of the major challenges in environmental st...
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ژورنال
عنوان ژورنال: Journal of Chemical Technology & Biotechnology
سال: 1997
ISSN: 0268-2575,1097-4660
DOI: 10.1002/(sici)1097-4660(199705)69:1<93::aid-jctb672>3.3.co;2-v