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Surface Modification of Activated Carbon for Treatment of Wastewater
Surface Modification of Activated Carbon for Treatment of Wastewater
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机译：活性炭的表面改性处理废水
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摘要
PURPOSE: A surface modification method of activated carbon for wastewater treatment is provided, which improves adsorption capacity of recalcitrant organic contaminants of industrial wastewater by reducing the surface of activated carbon. CONSTITUTION: The surface modification method of activated carbon comprises the process of reducing activated carbon by directly reacting dithionite ions (S2O4¬2-) produced through electrolysis of sulfurous acid gas with activated carbon, wherein the activated carbon surface modification method is performed by carrying out electrolysis as agitating the activated carbon after injecting activated carbon into the cathode chamber of an electrolytic cell comprising cathode chamber, anode chamber and separation membrane positioned between the cathode chamber and anode chamber and using an aqueous sulfuric acid solution into which sulfurous acid gas is dissolved as a cathode solution and an aqueous sulfuric acid solution as an anode solution, wherein anode plate of the electrolytic cell used for electrolysis is lead or graphite, cathode plate is stainless steel or graphite, and current density is 10 to 200 mA/cm¬2, wherein 0.1 to 2.0 M of sulfuric acid solution saturated with sulfurous acid gas is used as the cathode solution, and wherein the sulfurous acid gas is consistently supplied into the cathode chamber from the outside during the process of performing electrolysis after injecting only the sulfuric acid solution as the cathode solution into the cathode chamber.
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机译：目的：提供一种用于废水处理的活性炭表面改性方法，通过减少活性炭的表面来提高工业废水中难降解有机污染物的吸附能力。组成：活性炭的表面改性方法包括通过使亚硫酸气体电解产生的连二亚硫酸根离子（S2O4‑2-）与活性炭直接反应来还原活性炭的方法，其中活性炭的表面改性方法是通过进行在将活性炭注入到包括阴极室，阳极室和位于阴极室与阳极室之间的分离膜的电解池的阴极室中并使用溶解有亚硫酸气体的硫酸水溶液作为电解之后，将活性炭注入电解中阴极溶液和硫酸水溶液作为阳极溶液，其中用于电解的电解池的阳极板为铅或石墨，阴极板为不锈钢或石墨，电流密度为10至200 mA / cm‑2，其中0.1至2.0 M的硫酸溶液被亚硫酸饱和g用作阴极溶液，其中在仅将作为阴极溶液的硫酸溶液注入到阴极室中之后，在进行电解的过程中，亚硫酸气体一直从外部被供应到阴极室中。
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