Removal of arsenic(III) from aqueous solutions using fresh and immobilized plant biomass

Kamala, C. T.; Chu, Khim Hoong; Chary, N.S.; Pandey, Piyush Kant; Ramesh, S.; Sastry, A. R. K.; Sekhar, K. Chandra

doi:10.1016/j.watres.2005.04.059

Cited by 147 publications

(52 citation statements)

References 40 publications

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“…The recoveries of arsenite and arsenate were found to be 80-83 and 84-87 %, respectively, up to four cycles (Table 1). Kamala et al (2005) also considered NaOH as desorbing agent and performed column study. They used immobilized biomass (Garcinia cambogia) as adsorbent, and they reused over five cycles of loading and elution, while desorption of arsenic from anion exchanger derived from coconut coir pith was carried out using 0.1 M HCl and 93-96 % regeneration efficiency was achieved (Anirudhan and Unnithan 2007; Table 1).…”

Section: Review Of Literaturementioning

confidence: 99%

“…Bai and Abraham (2003) performed the desorption studies using 0.01 N solutions of acids (HCl, H 2 SO 4 , HNO 3 , HCOOH and CH 3 COOH), alkalis (NaOH, NaHCO 3 and Na 2 CO 3 ), buffers and salts, but alkalis were recommended as the best desorbents for Cr(VI) removal from immobilized Rhizopus nigricans. Recovery of arsenic using NaOH was found to be effective up to 80-87 % from iron-oxide-coated sand (Thirunavukkarasu et al 2003) and up to 100 % from biomass (Kamala et al 2005). Hu et al (2005) also found NaOH as the most effective desorbing agent (up to six cycles) as it removed 87.7 % of Cr(VI) from maghemite nanoparticle.…”

Section: Use Of Acids For Regeneration and Recovery Of Heavy Metalsmentioning

confidence: 99%

See 1 more Smart Citation

Regeneration of adsorbents and recovery of heavy metals: a review

Lata

Singh

Samadder

2014

Int. J. Environ. Sci. Technol.

385

136

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In last a few decades, significant improvements were made in both efficiency and economy for removal of heavy metals and metalloid (arsenic) from water using adsorbents. But less attention was paid to recycling of used adsorbents and recovery of the heavy metals from the desorbing agents. For regeneration and reuse of adsorbents, various possible regenerating agents such as acids, alkalis and chelating agents (such as ethylene diamine tetraacetic acid) were used by many researchers with very limited success in some of the studies only up to a limited number of adsorption-desorption cycles. Only a few of the reported studies were focused on recovery of adsorbed (from saturated adsorbents) and desorbed metals (from regenerating agents). Though the management of the used adsorbent and recovery of heavy metals is one of the most important aspects, but only a limited number of research works considered the fate of spent adsorbents before disposal. This review summarizes the removal efficiency of various adsorbents, desorption efficiency of various regenerating agents and recovery of the heavy metals from both saturated adsorbents and desorbing solvents used for regeneration. The study will help the scientific community working on adsorption studies to take up research initiatives required to address the feasible recovery methods of heavy metals from the used adsorbents, to study the possible reuse of the desorbing agents and to choose a suitable desorbing/regenerating agent for a particular adsorbent.

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Section: Review Of Literaturementioning

confidence: 99%

Section: Use Of Acids For Regeneration and Recovery Of Heavy Metalsmentioning

confidence: 99%

Regeneration of adsorbents and recovery of heavy metals: a review

Lata

Singh

Samadder

2014

Int. J. Environ. Sci. Technol.

385

136

View full text Add to dashboard Cite

show abstract

“…After adsorption of As(III), a peak displayed at 1733.78 cm -1 due to increase in frequency. This band clearly reveals that there was involvement of carboxyl group in sorption of As(III) [33]. Another shifting observed from 1629.…”

Section: Fig 4 Effect Of Initial As(iii) Ion Concentration On Biosomentioning

confidence: 74%

Proficient Removal of As(III) from Water Using Orchid Plant (Vanda sp.) as Biosorbent

Sahu¹,

Pandey²,

Khan³

et al. 2017

Asian J. Chem.

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“…Samples (5 mL) were withdrawn at certain time intervals and then centrifuged (Remi Instruments ltd., Mumbai India) at 10,000 rpm for 10 min and the supernatant fraction was analyzed for residual concentration of either As(III) or As(V) ions using ThermoFisher Scientific iCE 3000 Series AA graphite furnace atomic absorption (GFAA) spectrometer [55]. The centrifuged cells were washed with 1 mL of double distilled water and resuspended in 2 mL of double distilled water and then the OD was measured.…”

Section: Bioaccumulation Experimentsmentioning

confidence: 99%