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LI Sitong, SHU Fangfang, WANG Nan, CHEN Hongbing, LI Yadong, LI Shunyi. High efficient removal effect of Cd2+ from wastewater by adsorption onto blood powder[J]. Chinese Journal of Environmental Engineering, 2017, 11(9): 5001-5006. doi: 10.12030/j.cjee.201609045
Citation: LI Sitong, SHU Fangfang, WANG Nan, CHEN Hongbing, LI Yadong, LI Shunyi. High efficient removal effect of Cd2+ from wastewater by adsorption onto blood powder[J]. Chinese Journal of Environmental Engineering, 2017, 11(9): 5001-5006. doi: 10.12030/j.cjee.201609045
shu

High efficient removal effect of Cd2+ from wastewater by adsorption onto blood powder

  • 1.

    College of Life Sciences, Hubei University, Wuhan 430062, China

  • 2.

    College of Resources and Environmental Sciences, Hubei University, Wuhan 430062, China

  • Received Date: 17/01/2017
    Accepted Date: 05/09/2016
    Available Online: 26/08/2017
    Fund Project:
  • High efficient removal of Cd2+ in wastewater by blood powder was reported in this research.The results showed that the removal rate of Cd2+ in wastewater reached to 99.38% when 100 mL wastewater with 20 mg·L-1 Cd2+ was adsorbed by 4 g blood powder adsorbent after 2 hours at 25℃ and pH 5.The adsorption isotherms of blood powder to Cd2+ could be described by the Langmuir isotherm model (R2=0.999 7). The value of maximum adsorption capacity was 10.24 mg·g-1 based on the analysis of Langmuir model. In order to get higher removal rate of Cd2+, two steps adsorption were performed. In the first step adsorption, 5 g blood powder was added into 100 mL wastewater with 20 mg·L-1 Cd2+ in vibration at 25℃ and pH 5, followed by filtration after 2 hours. Then another 1 g blood powder was further added into the filtrate for the second adsorption under the same conditions. The results showed that residual concentration of Cd2+ further reduced to 0.006 mg·L-1 after two steps of absorption, which reached the emission standard of wastewater (GB 21900-2008, Cd2+ -1). These data showed that the blood powder had the higher removal capability of Cd2+ than activated carbon, sand, kaolinite and other regular adsorbents. Our results demonstrated an alternative way to the treatment of Cd2+-containing wastewater.
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High efficient removal effect of Cd2+ from wastewater by adsorption onto blood powder

  • Received Date: 17/01/2017
  • Accepted Date: 05/09/2016
  • Available Online: 26/08/2017
Fund Project:

Abstract: High efficient removal of Cd2+ in wastewater by blood powder was reported in this research.The results showed that the removal rate of Cd2+ in wastewater reached to 99.38% when 100 mL wastewater with 20 mg·L-1 Cd2+ was adsorbed by 4 g blood powder adsorbent after 2 hours at 25℃ and pH 5.The adsorption isotherms of blood powder to Cd2+ could be described by the Langmuir isotherm model (R2=0.999 7). The value of maximum adsorption capacity was 10.24 mg·g-1 based on the analysis of Langmuir model. In order to get higher removal rate of Cd2+, two steps adsorption were performed. In the first step adsorption, 5 g blood powder was added into 100 mL wastewater with 20 mg·L-1 Cd2+ in vibration at 25℃ and pH 5, followed by filtration after 2 hours. Then another 1 g blood powder was further added into the filtrate for the second adsorption under the same conditions. The results showed that residual concentration of Cd2+ further reduced to 0.006 mg·L-1 after two steps of absorption, which reached the emission standard of wastewater (GB 21900-2008, Cd2+ -1). These data showed that the blood powder had the higher removal capability of Cd2+ than activated carbon, sand, kaolinite and other regular adsorbents. Our results demonstrated an alternative way to the treatment of Cd2+-containing wastewater.

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