Adsorption Equilibrium, Physicochemical Parameters and Colour Deactivation Effects of Activated Carbon for Dye for Waste Water Treatment

Research on World Agricultural Economy Pub Date : 2021-03-30 DOI:10.36956/RWAE.V2I1.345

M. Alhassan

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Abstract

Effluents from dye and dyeing industries constitute serious environmental threat and attracting serious attention. Activated carbon prepared from guinea corn husk and maize cobs waste materials was used as a precursor to prepare activated carbon. Variable ratios of the constituent ashes ( 1:1, 1:3 and 3:1) were prepared. The husk and cobs were ashed in a murfle furnace at 400-500oc for 2.5 h. Acid activation was carried out by washing with HCl (1M) after which it was characterized using XRF which revealed (in variable proportions) the presence of SiO2, Al2O3 and Fe2O3 as dominant oxides in the ashes. Waste water decolourization efficiency of the adsorbents was tested using dye waste water at same contact time using variable absorbent dosage. Higher moisture (96.80±0.56), Ash (12.90±0.35), pH (6.3±0.17), Conductivity (208±1.34) and Bulk density (12.27±0.61) were obtained for guinea corn husk. The best clearity was obtained after batch adsorption experiments at 1:1 which gave the highest adsorption at equilibrium (Qe) of 28.55 compared to 12.750 and 10.900 obtained for 1;3 and 3:1 respectively.

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活性炭对废水处理染料的吸附平衡、理化参数及失色效果

印染工业废水对环境构成严重威胁，引起了人们的严重关注。以豚鼠玉米壳和玉米芯废料为原料制备活性炭。配制了不同比例的灰分(1:1,1:3和3:1)。稻壳和玉米芯在莫尔弗炉中400-500℃焙烧2.5 h。用HCl (1M)洗涤进行酸活化，然后用XRF对其进行表征，发现(以不同比例)SiO2、Al2O3和Fe2O3作为主要氧化物存在于灰烬中。采用不同吸附剂投加量的染料废水，在相同接触时间下，对吸附剂的废水脱色效果进行了测试。获得较高的水分(96.80±0.56)、灰分(12.90±0.35)、pH(6.3±0.17)、电导率(208±1.34)和容重(12.27±0.61)。在1:1和3:1条件下，平衡吸附量(Qe)分别为12.750和10.900，而在1:1条件下，平衡吸附量(Qe)最高，为28.55。

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Research on World Agricultural Economy

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0.70

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0.00%

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