A preliminary study on the adsorptive removal of Cr(VI) using seaweed, Hydrilla verticillata

Baral, Saroj Sundar; Das, Nigamananda; Chaudhury, G. Roy; Das, Sonali

doi:10.1016/j.jhazmat.2009.06.011

Cited by 91 publications

(54 citation statements)

References 52 publications

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“…So generally it can be seen that the sorption capacity was steady or Decreased with biomass concentration. With further increase in biosorbent dose beyond the optimum level the removal efficiency of metal ions remained almost constant, this may be due to the reaching of equilibrium state at given experimental conditions [8]. It was also because to the screening effect between cells.…”

Section: Effect Of Biosorbent Dosementioning

confidence: 93%

“…Rapid process of biosorption also initially could be attributed to the availability of more free surface active sites and involvement of mechanisms like ionexchange or physical biosorption at the FMB surface [20]. Once these sites are blocked, the intra-particle diffusion of biosorbate takes place which might be responsible for the slower biosorption process at the later stage [8,13]. …”

Section: Effect Of Contact Timementioning

confidence: 99%

“…In the presence of cellulose which acts as ligand, competition for the chrome ion occurs between ligand and co-ligand. When the stability of metal ion and co-ligand complex is sufficient weak, cellulose complexes with the metal ion are formed and the the co-ligand is released [7,8,12].…”

mentioning

confidence: 99%

“…It has the cellulose content of 80-85% [24]. This proves that cassava peel (Manihot utilissima) has the potential as the heavy metal biosorbent (Cu, Cd, Pb, and Cr) in electroplating waste [8,9,18].…”

mentioning

confidence: 99%

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Absorption Activity of Cassava Peel (Manihot utilissima) as Chromium (VI) Metal Biosorbent in Electroplating Waste

Candrawati

Martak²,

Cahyo³

2017

J. Pure App. Chem. Res.

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Electroplating is a process of metal veneering with another metal using the electric energy. The water waste of electroplating industry contains many kinds of heavy metal ions, especially chromium (VI) which might cause pollutions if it was not processed and it presents above the threshold allowed. The use of cellulose can be a solution, because it has the functional groups which form bonding with the metal ions. Cassava peel is one of the sources of cellulose which contains 80-85% of cellulose. This proves that cassava peel (Manihot utilissimaI) has the potential as the heavy metal biosorbent of chromium metal in electroplating waste. The methodology of the research is conducted in a series including analysis of heavy metal concentrations of chromium (VI) in electroplating waste. Biosorption treatment of cassava peel (Manihot utilissimaI) biosorbent activated by HNO 3 1.5 M in electroplating waste conducted in the batch method. Analysis of heavy metal concentrations of chromium (VI) in electroplating waste was performed by Atomic Absorption Spectrophotometry (AAS) after biosorbtion process. Variation of biosorbent mass were (0.1, 0.2, 0.3, 0.4, 0.5) grams, and variation of biosorbent contact time were (10,20, 30, 40, 50) minutes. The analysis result recorded by AAS (Atomic Absorption Spectrophotometry) showed that the level of total chromium in electroplating waste reaches 2.0777 ± 0.2785 ppm. Accordingly, the chromium test solution used in this research was 2 ppm to measure the optimum conditions of % chromium (VI) adsorbed with variation of mass and contact time. From the results of this research, the optimum mass and contact time of cassava peel biosorbent activated by HNO 3 1.5 M in % chromium (VI) adsorbed were 0.1 gram and 40 minutes, respectively. Finally, the optimum mass and contact time of cassava peel biosorbent activated by HNO 3 1.5 M has applied to electroplating waste. The % chromium adsorbed in electroplating waste with the addition of cassava peel biosorbent activated by HNO 3 1.5 M was measured in average of 61.72%.

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Section: Effect Of Biosorbent Dosementioning

confidence: 93%

Section: Effect Of Contact Timementioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Absorption Activity of Cassava Peel (Manihot utilissima) as Chromium (VI) Metal Biosorbent in Electroplating Waste

Candrawati

Martak²,

Cahyo³

2017

J. Pure App. Chem. Res.

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“…Modification of biosorbent by metal impregnation (Talreja et al 2014) and acid treatment ) improves the percentage removal of pollutants (Kuo and Bembenek 2008;FonsecaCorrea et al 2013;Owlad et al 2010;Cronje et al 2011). Chromium is found in the environment predominantly in two forms Cr(III) and Cr(VI) out of which Cr(VI) is most mutagenic and carcinogenic to the living organism (Acar and Malkoc 2004;Baral et al 2009). Chromium sulfate [Cr(III)] is used as a tanning agent which can be converted to Cr(VI) and causes severe contamination of ground water (El-Sherif et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Statistical optimization of process parameters for the simultaneous adsorption of Cr(VI) and phenol onto Fe-treated tea waste biomass

Gupta

Balomajumder

2017

Appl Water Sci

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In this study, simultaneous removal of Cr(VI) and phenol from binary solution was carried out using Fetreated tea waste biomass. The effect of process parameters such as adsorbent dose, pH, initial concentration of Cr(VI) (mg/L), and initial concentration of phenol (mg/L) was optimized. The analysis of variance of the quadratic model demonstrates that the experimental results are in good agreement with the predicted values. Based on experimental design at an initial concentration of 55 mg/L of Cr(VI), 27.50 mg/L of phenol, pH 2.0, 15 g/L adsorbent dose, 99.99% removal of Cr(VI), and phenol was achieved.

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Valorization of Agricultural Wastes as Low‐Cost Adsorbents Towards Efficient Removal of Aqueous Cr(VI)

Acharya

Parida

2022

Handbook of Biomass Valorization for Industrial Applications

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A preliminary study on the adsorptive removal of Cr(VI) using seaweed, Hydrilla verticillata

Cited by 91 publications

References 52 publications

Absorption Activity of Cassava Peel (Manihot utilissima) as Chromium (VI) Metal Biosorbent in Electroplating Waste

Absorption Activity of Cassava Peel (Manihot utilissima) as Chromium (VI) Metal Biosorbent in Electroplating Waste

Statistical optimization of process parameters for the simultaneous adsorption of Cr(VI) and phenol onto Fe-treated tea waste biomass

Valorization of Agricultural Wastes as Low‐Cost Adsorbents Towards Efficient Removal of Aqueous Cr(VI)

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