Adsorption of Zn2+ from Water by Modified Corncob

Shuo Deng; Binhui Jiang; Rihui Liu; Jiangwei Chen
December 2013
Advances in Environmental Protection;Dec2013, Vol. 3 Issue 5, p138
Academic Journal
Heavy metal pollution is one of the important parts of environmental problems. In order to find out the biological adsorbent for the purification effect of heavy metal ions in water, the microwave irradiation, as well as the immersion in HCl, NaOH and NaCl, was used to modify corncob respectively. The experiment used method of control variables, and the modified corncob adsorption rate of Zn2+ was the reference index. According to the results, the best modified condition was as follows: The power of microwave irradiation was 280 W, the time of microwave irradiation was 5 min, and the concentration of sodium chloride solutions was 0.3%. And the best adsorption condition was as follows: the diameter of corncob was about 1.5 mm, the dosage was 20 g/L, the adsorption time was 30 min, the shaking speed was 180 r/min, and the pH value of liquor zinc chloride was about 6. The results showed that modified corncob adsorption rate of Zn2+ was more than 90% at low concentrations. In conclusion, it is a good adsorption property of heavy metal (zinc) in water by modified corncob.


Related Articles

  • Competitive Sorption Characteristics of Heavy Metal Ions in Multi-Metal Systems on Natural Clinoptilolite from Baiyin, China. Baowei Zhao; Li Zhang; Jinkui Zhong; Ruirui Li // International Journal of Applied Environmental Sciences;2013, Vol. 8 Issue 3, p237 

    Heavy metal pollution has become a more serious environmental problem. The sorption behavior of natural clinoptilolite from Baiyin, China was studied with respect to Cu2+, Cd2+ and Zn2+ in water system in order to evaluate its application potential to remedy the soil contaminated by heavy...

  • Evaluation of Anthropogenic Impacts on Soiland Regolith Materials Based on BCR Sequential Extraction Analysis. Kalhori, A. Alimohammad; Jafari, H. R.; Yavari, A. R.; Prohic, E.; Kokya, T. Ahmadzadeh // International Journal of Environmental Research;Winter2012, Vol. 6 Issue 1, p185 

    This study was conducted in Assaluyeh region, southwest of Iran to show utilization and efficiency of sequential extraction analysis in environmental impact studies using soil and related regolith materials as sample media. In order to investigate distribution of heavy metals, optimized BCR...

  • Occurrence of heavy metals in fish: a study for impact assessment in industry prone aquatic environment around Kolkata in India. Aktar, Md. Wasim; Sengupta, Dwaipayan; Chowdhury, Ashim // Environmental Monitoring & Assessment;Oct2011, Vol. 181 Issue 1-4, p51 

    A study was conducted during November 2005-October 2006 for determining the heavy metal contamination in surface water and sediments and giving prime thrust to determine the heavy metal concentrations fish samples collected from various points of the river Ganga at different time interval. Fish...

  • Adsorption of uranium(VI) by grapefruit peel in a fixed-bed column: experiments and prediction of breakthrough curves. Zou, Weihua; Zhao, Lei; Zhu, Lu // Journal of Radioanalytical & Nuclear Chemistry;Jan2013, Vol. 295 Issue 1, p717 

    Adsorbent, natural grapefruit peel (GFP) exhibit good efficacy to adsorb a highly toxic radioactive heavy metal, uranium(VI). Through the fixed-bed column technique adsorption characteristics of uranium(VI) is observed at different flow rate, bed depth, influent uranium(VI) concentration and...

  • Evaluate the heavy metal toxicity to Pseudomonas fluorescens in a low levels of metal-chelates minimal medium. Wang, Fei; Yao, Jun; Chen, Huilun; Yi, Zhengji; Yu, Chan; Tuo, Yujie; Ma, Lan; Yu, Qian // Environmental Science & Pollution Research;Aug2014, Vol. 21 Issue 15, p9278 

    A 2-( n-morpholino)ethane sulfonic acid (MES)-buffered minimal medium with low levels of metal chelates was used to evaluate the heavy metal (Co, Pb, Zn, Fe, Fe, Cd, Cu, and Cr) toxicity to Pseudomonas fluorescens through minimizing the limitation of the existing medium. The interaction between...

  • Cadmium(II) sorption from water samples by powdered marble wastes. Ghazy, Shaban E.; Gabr, Isam M.; Gad, Abdallah H. M. // Chemical Speciation & Bioavailability;2008, Vol. 20 Issue 4, p249 

    A series of batch adsorption experiments were carried out, with the aim of removing cadmium ions from aqueous solutions and water samples using powdered marble wastes (PMW) as an effective inorganic sorbent. PMW is inexpensive, widespread, and may be considered as environmental problem. The main...

  • Biosorption of Lead(ll) in Aqueous Solution by Spent Mushroom Tricholoma lobayense. Jiuzhou Dai; Feng Cen; Jinhu Ji; Weiwei Zhang; Heng Xu // Water Environment Research (10614303);Apr2012, Vol. 84 Issue 4, p291 

    The biosorption of lead(II) ions in both simulated and real wastewater by spent mushroom Tricholoma lobayense, was studied in this work. The results show a biomass with a high potential for removing lead ions from wastewater. The optimum pH for the adsorption is 4, and the adsorption process is...

  • Soil quality changes in response to their pollution by heavy metals, Georgia. Matchavariani, Lia; Kalandadze, Besik; Lagidze, Lamzira; Gokhelashvili, Nino; Sulkhanishvili, Nino; Paichadze, Nino; Dvalashvili, Giorgi // Journal of Environmental Biology;2015 Special Issue, Vol. 36, p85 

    The present study deals with the composition, migration and accumulation of heavy metals in Irrigated soils, plants and partially natural waters; and also, establishing the possible sources of pollution and their impacton environmental situation. The content of toxlcelements In the irrigated...

  • EFFECT OF PARTICLE SIZES OF EDTA MODIFIED AND UNMODIFIED MAIZE HUSK ON ADSORPTION OF Fe(ll), Cu(ll) AND Ni(ll) IONS FROM AQUEOUS SOLUTION. FASOTO, T. S.; ARAWANDE, J. O. // Journal of Applied Sciences in Environmental Sanitation;Mar2013, Vol. 8 Issue 1, p47 

    Heavy metals contaminants are major environmental pollutants. Industrial wastewater effluents carry mixtures of these heavy metals. The effect of particle sizes of unmodified and EDTA modified maize husk on adsorption of Fe2+, Cu2+ and Ni2+ metal ions from aqueous solutions was investigated at...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics