scholarly journals Efficient Removal of Chromium(VI) Using a Novel Waste Biomass Chestnut Shell-Based Carbon Electrode by Electrosorption

ACS Omega ◽  
2021 ◽  
Author(s):  
Xiaofei Zhang ◽  
Bo Ren ◽  
Xiaonan Wu ◽  
Xin Yan ◽  
Yu Sun ◽  
...  
Keyword(s):  
Carbon Electrode ◽  
Waste Biomass ◽  
Efficient Removal ◽  
Chromium Vi ◽  
Chestnut Shell

Sorption of Chromium(VI) from Aqueous Solution by Cassava (Manihot sculenta Cranz.) Waste Biomass

2006 ◽  
Vol 3 (2) ◽  
pp. 161-174 ◽  
Author(s):  
Michael Horsfall ◽  
Fred Ogban ◽  
Eyitemi Emmanuel Akporhonor
Keyword(s):  
Aqueous Solution ◽  
Waste Biomass ◽  
Chromium Vi

scholarly journals Electrochemical Behaviour of a Gold Film- Glassy Carbon Electrode for Determination of Chromium (VI)

2021 ◽  
Author(s):  
Nevila Broli ◽  
Loreta Vallja ◽  
Majlinda Vasjari
Keyword(s):  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Electrochemical Behaviour ◽  
Supporting Electrolyte ◽  
Anodic Stripping Voltammetry ◽  
Carbon Electrode ◽  
Modulation Amplitude ◽  
Chromium Vi ◽  
Relative Standard

A gold nanostructured film modified glassy carbon electrode (Aufilm/GCE) was developed for the determination of chromium (VI) in water sample. GCE was immersed into HAuCl4 solution (10-3M) and electrodeposition of thin gold layer was conducted at –0.4 V (vs Ag/AgCl) for 10 min. The strong affinity between Au and Cr species resulted with increasing of Cr (VI) signal, compared with the bare glassy carbon electrode. The electrodepositing time, type of supporting electrolyte, pH, the scan rate, modulation amplitude, and modulation time were optimized using differential pulse anodic stripping voltammetry (DP-ASV). The calibration graph using accumulation time of 120 s was linear from 10 to 120 µgL-1 with a sensitivity 1.3 x 10-2 µA/µgL-1. Under optimum experimental conditions, a good correlation coefficient R2=0.9971, and a low detection limit 5.5 µg/L Cr (VI) was obtained. The signal was reproducible with a relative standard deviation ±4.5 %. The developed Aufilm/GCE sensor was applied for the Cr (VI) determination of in sewage water samples.

scholarly journals Kinetic and Thermodynamic Studies of Chromium (VI) Sorption by Pure and Carbonized Fluted Pumpkin waste biomass (Telfairia occidentalis Hook F.)

2012 ◽  
Vol 27 ◽  
pp. 11-18
Author(s):  
Timi Tarawou ◽  
Michael Horsfall
Keyword(s):  
Aqueous Solution ◽  
Rate Constants ◽  
Industrial Effluents ◽  
Second Order ◽  
Order Kinetic ◽  
Waste Biomass ◽  
Fluted Pumpkin ◽  
Chromium Vi ◽  
Telfairia Occidentalis ◽  
Pseudo Second Order

The adsorption of chromium (VI) ions from aqueous solution was studied using pure and carbonized fluted pumpkin waste biomass (FPWB). The kinetic data shows a pseudo-first-order mechanism with rate constants of 1.26 × 10-2 and 1.933 × 10-2 mg g-1 min-1 for the pure and carbonized FPWB, respectively. While the pseudo-second-order mechanism has rate constants of 0.93 × 10-1 and 1.33 × 10-1 mg g-1 min-1 for the pure and carbonized waste biomass respectively. The pseudo-second order kinetic model was found to be more suitable for describing the experimental data based on the correlation coefficient values (R2) of 0.9975 and 0.9994 obtained for pure waste biomass (PWB) and carbonized waste biomass (CWB), respectively. The results obtained from this study show that PWB and CWB have very high removal capacity for chromium (VI) from aqueous solution over a range of reaction conditions. Thus, fluted pumpkin waste biomass (Telfairia occidentalis Hook F) is a potential sorbent for the treatment of industrial effluents containing chromium (VI) contaminant.DOI: http://dx.doi.org/10.3126/jncs.v27i1.6436 J. Nepal Chem. Soc., Vol. 27, 2011 11-18Uploaded date: 16 July, 2012

Sulfur-based mixotrophic bio-reduction for efficient removal of chromium (VI) in groundwater

2020 ◽  
Vol 268 ◽  
pp. 296-309 ◽  
Author(s):  
Baogang Zhang ◽  
Zhongli Wang ◽  
Jiaxin Shi ◽  
Hailiang Dong
Keyword(s):  
Efficient Removal ◽  
Chromium Vi

A facile approach to fabricate metal coordinated carboxylated alginic acid-based adsorbent for efficient removal of chromium (VI)

2021 ◽  
Vol 231 ◽  
pp. 152-165
Author(s):  
Khalid A. Alamry ◽  
Raed H. Althomali ◽  
Ajahar Khan ◽  
Abeer M. Alosaimi ◽  
Mahmoud A. Hussein
Keyword(s):  
Alginic Acid ◽  
Efficient Removal ◽  
Chromium Vi

Green synthesis of poly(pyrrole methane)-based adsorbent for efficient removal of chromium(VI) from aqueous solution

2021 ◽  
Vol 293 ◽  
pp. 126197 ◽  
Author(s):  
Yajun Ji ◽  
Feiya Xu ◽  
Panli Zhang ◽  
Yuanyi Xu ◽  
Gaili Zhang
Keyword(s):  
Aqueous Solution ◽  
Green Synthesis ◽  
Efficient Removal ◽  
Chromium Vi
Sign in / Sign up

Export Citation Format

Share Document