Biosorption Potential of
            <i>Vetiveria zizanioides</i>
            for the Removal of Chromium(VI) from Synthetic Wastewater

Tyagi, Uplabdhi; Khandegar, Vinita

doi:10.1061/(asce)hz.2153-5515.0000403

Cited by 18 publications

(5 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This was due to the increase in the number of ions competing for the available functional groups on the surface of biomass [1,4]. On the other hand, at 60 °C, the biomass studied, shows the same results for removal, adsorbing 100% between 30 and 35 minutes with 200 and 1000mg/L of metal, respectively (Figure 4) with respect to other biomasses, this results are like for Penicillium sp., IA-01 [23], but there are other studies, which report a major biosorption with low concentrations: Citrus reticulata and Tamarindus indica shell [24,16]. In addition, we observe the development of a blue-green and white precipitate, which changes more rapidly at higher temperatures (date not shown).…”

Section: Effect Of the Initial Metal Concentrationsupporting

confidence: 42%

Biosorption of Chromium (VI) in Aqueous Solution by Ananas comosus Biomass Shell

JF¹

2019

MCDA

View full text Add to dashboard Cite

Effluents from tanneries are one of the main sources of contamination with Chromium (VI) of water and soils. This metal is used in tanning leather and skins, steel alloys, electroplating, textile staining and as a biocide in water cooling systems in nuclear plants, discharging the metal to the environment representing a great risk to the health of living organisms, so in this work, we studied the Chromium (VI) removal in aqueous solution by the Ananas comosus biomass shell, by the Diphenylcarbazide method to evaluate the metal concentration in solution. Biosorption at different pH (1, 2, 3 and 4) was evaluate for different times. We too studied the effect of temperature in the range of 28 to 60 °C and the removal at different initial concentrations of Chromium (VI) of 200 to 1000mg/L. Therefore, the highest biosorption of the metal (100mg/L) occurs within 10 hours, at pH of 1.0, 28 °C with 5g of natural biomass. According to temperature, the highest removal was observing at 60 °C, in 3 hours, when the metal is completely adsorbed. At the analyzed concentrations of Cr (VI), fungal biomass, showed excellent removal capacity at 60 °C, it removal 1g/L of the metal in 45 minutes, besides it removal efficiently the metal in situ (100% and 97.2% removal in 100mL of water and 10g of earth contaminated, after 9 and 10 days of incubation, with 10g of biomass; so, it can be used to eliminate it from industrial wastewater.

show abstract

Section: Effect Of the Initial Metal Concentrationsupporting

confidence: 42%

Biosorption of Chromium (VI) in Aqueous Solution by Ananas comosus Biomass Shell

JF¹

2019

MCDA

View full text Add to dashboard Cite

show abstract

“…Sorption mechanism can be easily recognized by knowing the magnitude of pHzpc of biomass 41 . The point of zero charge is the pH at which the surface of biomass has zero electrical charge density.…”

Section: Resultsmentioning

confidence: 99%

Mechanisms of halosulfuron methyl pesticide biosorption onto neem seeds powder

Saeed

Usman

Zahoor

et al. 2021

Sci Rep

View full text Add to dashboard Cite

The current investigation was designed to remove halosulfuron methyl from aqueous media by means of neem seed powder (NSP) in batch modes. Characterizations of NSP were carried out by using EDX, SEM, FTIR, point of zero charge and surface analysis. Optimum operation conditions were scrutinized by studying the influence of different factors like solution pH, dose of NSP, contact time, initial halosulfuron methyl concentration and temperature. Result indicates the dependency of the removal of halosulfuron methyl on solution pH and maximal removal (54%) was achieved in acidic medium (i.e. pH 3.0). To identify the chemical surface of NSP, point of zero charge of NSP was determined and was found to be 6.5 which imply that the surface of NSP is positively charged below pH 6.6 and favored the anionic sorption. Kinetics of halosulfuron methyl were demonstrated well by pseudo second order due to highest R2 (0.99) owing to the nearness between experimental and calculated sorption capacities. Isotherm results imply that Langmuir was found to the principal model to explain the removal of halosulfuron methyl and maximum monolayer sorption capacity was determined to be 200 mg g−1. Thermodynamic parameters like ΔH°, ΔG° and ΔS° were calculated from van’t Hoff plot and were found negative which suggest that removal of halosulfuron methyl is exothermic and spontaneous at low temperature. These outcomes insinuate that neem seed power may be a valuable, inexpensive and ecofriendly biosorbent for the removal of pesticides.

show abstract

“…Sodium hydroxide (Qualigens, India) and sulphuric acid (Qualigens, India) were used to adjust the pH of the solution. Potassium permanganate (Qualigens, India), sodium azide (Qualigens, India) and 1,5-diphenylcarbazide (Qualigens, India) were used for analysis of the chromium present in synthetic solution [1] , [2] .…”

Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

Dataset on statistical reduction of highly water-soluble Cr (VI) into Cr (III) using RSM

Yadav

Khandegar

2019

Data in Brief

Self Cite

View full text Add to dashboard Cite

With the excellent solubility, mobility, bioaccumulation and carcinogenesis, hexavalent chromium Cr (VI), widely exists in various industrial effluents such as chrome plating, metal finishing, pigments, and tanning. Cr (VI) is one of the toxic metal pollutants among all the heavy metals. Therefore, the purpose of this work was to convert highly water-soluble Cr (VI) into Cr (III) species using electrocoagulation (EC) process. The Box–Behnken design (BBD) as was applied to investigate the effects of major operating variables and optimization conditions. The predicted values of responses obtained using the model is agreed well with the experimental data. This work demonstrated that the Cr (VI) is entirely converted into Cr (III) in solid-phases in electrocoagulation process. It was also found that reduction increased with current density that suggesting that the reduction efficiency is closely related to the generation of floc.

show abstract

Biosorption Potential of Vetiveria zizanioides for the Removal of Chromium(VI) from Synthetic Wastewater

Cited by 18 publications

References 28 publications

Biosorption of Chromium (VI) in Aqueous Solution by Ananas comosus Biomass Shell

Biosorption of Chromium (VI) in Aqueous Solution by Ananas comosus Biomass Shell

Mechanisms of halosulfuron methyl pesticide biosorption onto neem seeds powder

Dataset on statistical reduction of highly water-soluble Cr (VI) into Cr (III) using RSM

Contact Info

Product

Resources

About