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596056884

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ÕªÒª£º±¾ÎÄÑ¡Óã¨AAA £©ÎªÔ­ÁÏ£¬Í¨¹ýBBB»¯Ñ§¸ÄÐÔÖÆ±¸³öÁËÒ»ÖÖÐÂÐÍÉúÎïÎü¸½²ÄÁÏ(BBB-AAA)¡£Í¬Ê±Ñо¿BBB-AAA¶ÔCr(VI)µÄÎü¸½ÐÔÄÜ£¬¿¼²ìÁ˲»Í¬pHÖµ¡¢Îü¸½Ê±¼äºÍCr(VI)³õʼŨ¶È¶ÔÎü¸½Ð§¹ûµÄÓ°Ï죬²¢½¨Á¢Îü¸½¶¯Á¦Ñ§Ä£ÐͺÍÎü¸½µÈÎÂÏß¡£ÊµÑé½á¹û±íÃ÷£ºÔÚÊÒÎÂÏ£¬pHΪ4.0£¬Îü¸½Ê±¼äÊÇ30min£¬Cr(VI)ÈÜÒº³õʼŨ¶ÈΪ750mg/Lʱ£¬BBB-AAA¶ÔCr(VI)Îü¸½Ð§¹û×î¼Ñ¡£Îü¸½¶¯Á¦Ñ§¿ÉÓÃ×¼¶þ¼¶¶¯Á¦Ñ§·½³ÌËùÃèÊö£¬Õâ±íÃ÷Îü¸½¹ý³Ì±»»¯Ñ§Îü¸½Ëù¿ØÖÆ¡£ÁíÍ⣬¿ÅÁ£ÄÚÀ©É¢Ä£ÐͱíÃ÷×ÜÎü¸½ËÙÂÊΪĤÀ©É¢ºÍÄÚÀ©É¢¹²Í¬¿ØÖÆ¡£BBB-AAA¶ÔCr(VI)µÄÎü¸½ÐÐΪ·ûºÏLangmuirÎü¸½µÈÎÂÄ£ÐÍ£¬Æä×î´óÎü¸½Á¿Îª98.62mg/g
Abstract:In this paper, (AAA) was used as raw material to prepare a novel biological adsorption material(BBB-AAA) by BBB chemically modified. Study on adsorption properties of the BBB-AAA for Cr(VI) and the influencing factors, such as pH values, adsorption time and initial concentration.[¾ä×ÓÓÐÎó] Set up the adsorption kinetics model and isothermal adsorption.[ÓÐÎó] Experimental results showed that the optimal adsorption effect of the BBB-AAA for  Cr(VI) while pH of 4.0, adsorption time of 30min, initial concentration of 750mg/L at room temperature. [ÓÐÎó]The adsorption kinetics data were fitted to pseudo second-order equation, and the adsorption is controlled by chemical process. The intra-particle diffusion model indicates[ʱ̬ͳһ] that  total adsorption rate is controlled by membrane diffusion and internal diffusion. Adsorption behavior of Cr(VI) was in accordance with Langmuir adsorption isotherm model, the maximum adsorption capacity is 98.62 mg/g.

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ak47aug

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596056884: ½ð±Ò+200, ·­ÒëEPI+1, ¡ï¡ï¡ïºÜÓаïÖú, лл´óÉñ 2017-03-02 16:40:48
°®ÓëÓêÏÂ: ½ð±Ò+1 2017-03-04 06:17:10
In this paper, a new type of bioabsorbable material (BBB-AAA) was prepared by BBB chemical modification (AAA) as raw material. The effects of different pH, adsorption time and initial concentration of Cr (VI) on the adsorption efficiency were investigated. The adsorption kinetics model and adsorption isotherm were also studied. The experimental results show that BBB-AAA has the best adsorption effect on Cr (VI) when the pH is 4.0, the adsorption time is 30min and the initial concentration of Cr (VI) is 750mg / L. The adsorption kinetics can be described by the quasi-second order kinetic equation, which indicates that the adsorption process is controlled by chemical adsorption. In addition, the intra-particle diffusion model shows that the total adsorption rate is controlled by membrane diffusion and internal diffusion. The adsorption behavior of BBB-AAA on Cr (VI) was in accordance with Langmuir adsorption isotherm model, and its maximum adsorption capacity was 98.62mg / g

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2Â¥2017-02-28 16:33:03
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596056884: ½ð±Ò+100, ¡ï¡ï¡ïºÜÓаïÖú, лл´óÉñ 2017-03-02 16:41:08
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In this paper, a new biological adsorbent (BBB-AAA) was prepared by chemically modifying the raw material, AAA, with BBB. The effects of different pH values, adsorption times and initial concentrations of Cr (VI) on the adsorption efficiency of the biological adsorbent were investigated. The adsorption kinetics model and adsorption isotherm were also studied. The experimental results demonstrate that BBB-AAA exhibits optium adsorption effect toward Cr (VI) when the pH value is 4.0, the adsorption time is 30mins and the initial concentration of Cr (VI) is 750mg / L. The adsorption kinetics can be described by the quasi-second order kinetic equation, which indicates that the adsorption process is controlled by chemical adsorption. In addition, the intra-particle diffusion model indicates that the total adsorption rate is controlled by membrane diffusion and internal diffusion. The adsorption behavior of BBB-AAA toward Cr (VI) follows the Langmuir adsorption isotherm model, and the maximum adsorption capacity thereof is 98.62mg / g.
3Â¥2017-02-28 21:16:33
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

818james

Í­³æ (ÖøÃûдÊÖ)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

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In this paper, a new kind of bioabsorbable material (BBB-AAA) was prepared by BBB chemical modification of raw material (AAA). It¡±s adsorption properties were studied under different pHs, adsorption times and initial concentrations of Cr (VI)).  So were its adsorption kinetics model and isotherm. The results showed that BBB-AAA has the best adsorption effect to Cr (VI) when pH is 4.0, adsorption time 30min and initial concentration of Cr (VI) 750mg / L. The adsorption kinetics can be described by a quasi-second order kinetic equation, indicateing that the adsorption process is controlled by chemical adsorption.  In addition, the intra-particle diffusion model showed that the total adsorption rate is controlled by both membrane and internal diffusions. The adsorption of BBB-AAA to Cr (VI) follows the Langmuir adsorption isotherm model with a maximum adsorption capacity of 98.62mg / g.
4Â¥2017-03-01 15:26:55
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