Exploring carbonaceous nanomaterials for arsenic and chromium removal from wastewater

Lal, Seema; Singhal, Anchal; Kumari, Pratibha

doi:10.1016/j.jwpe.2020.101276

Cited by 62 publications

(14 citation statements)

References 132 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recently, several review papers on removing Cr(VI) from water and wastewaters by adsorption process have been published [23][24][25]. Most of the reviews focused only one specifi c type of adsorbents such as carbon nanotubes [26], activated carbon derived from biomass [27], carbonaceous nanomaterials [28],microporous polymers [29], silica-based materials [30], chitosanbased nanocomposite [31], magnetic iron oxides [32], nanoparticle-based adsorbent [33,34], polyaniline-based materials [35], metal-organic framework (MOF)derivatives and their composites [36], and natural minerals [37]. This study off ers a signifi cant and thorough review on removing Cr(VI) from water by using biomass-based waste materials (BMWs) as adsorbents, especially those that have emerged in recent years.…”

Section: Introductionmentioning

confidence: 99%

Recent Advances in Biomass-Based Waste Materials for the Removal of Chromium (VI) from Wastewater: A Review

et al. 2021

View full text Add to dashboard Cite

Hexavalent chromium (Cr(VI)) is a critical pollutant with high toxicity, even at trace concentrations. Cr(VI) is possibly carcinogenic and mutagenic and can produce serious health issues. Hence, it is necessary to remove Cr(VI) from the water before releasing it into the environment. Currently, numerous removal techniques were used. Adsorption is the best method compared to others because it is simple, cheap, highly efficient, and can be used in water having trace concentrations of contaminants. Biomass-based waste materials (BMWs) are found as far better adsorbents than commercially and other available adsorbents. In this study, the existing Cr(VI) removal techniques are reviewed and, a broad range of current research studies of Cr(VI) removal from water by using BMWs are evaluated. This review can be helpful to develop a more efficient, cheap, reliable, and environmentally benign bio-adsorbent. It is obvious after the literature review given herein that BMWs exhibited potential adsorbents for the removal of Cr(VI). Also, the chemically modified adsorbents exhibited a higher adsorption capacity than unmodified adsorbents.

show abstract

Section: Introductionmentioning

confidence: 99%

Recent Advances in Biomass-Based Waste Materials for the Removal of Chromium (VI) from Wastewater: A Review

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Researchers have shown reduction of Cr (VI) to Cr (III) using precipitation and coagulation [ 15 ]. Recent studies have reported novel mechanisms such as in situ deposition technique for the removal of heavy metals.…”

Section: Introductionmentioning

confidence: 99%

Utilization of Tires Waste-Derived Magnetic-Activated Carbon for the Removal of Hexavalent Chromium from Wastewater

et al. 2020

View full text Add to dashboard Cite

The present study focuses on fabrication of magnetic activated carbon (M-AC) using tire waste and its potential investigation for adsorption of Cr (VI) from wastewater. The composite material (M-AC) was synthesized by pyrolysis followed by in situ magnetization method, and characterized by FTIR, FESEM, EDX, and XRD analysis. The maximum adsorption of Cr (VI) ion over composite adsorbent was found (~99.5%) to occur at pH 2, sample volume 10 mL, adsorbent dose 100 mg, contact time 30 min. The adsorption process was endothermic, feasible, spontaneous, and was found to follow pseudo second order of the reaction. The Cr ion could be completely desorbed (~99.3%) from the composite adsorbent by using 20 mL of 2 M NaOH solution. The composite adsorbent was regenerated by continuous adsorption and desorption for 5 consecutive cycles by using 10 mL 0.1 M HCl solution. M-AC also performed well in case of tannery wastewater by removing about 97% of Cr (VI).

show abstract

“…The high concentration of Cr also exerts strong toxic effects as it can diffuse through the cell membranes, oxidize biological molecules and create a potential risk of living being healthy. At the same time, Cr also is responsible for skin tumors in animals (Lal et al, 2020).…”

Section: Chromiummentioning

confidence: 99%

Synergistic effects of calcium peroxide and Fe3O4@BC composites on AVS removal, phosphorus and chromium release in sediments

Huang

Gou

et al. 2022

Preprint

View full text Add to dashboard Cite

Black-odorous sediment pollution in urban have received widespread attention, especially pollution caused by acidified volatile sulfide (AVS), phosphorus and heavy metals. Fe3O4 was loaded onto the biochar (BC) by coprecipitate method to synthesize Fe3O4@BC composites, which were mixed with calcium peroxide (CP) to sediment pollution treatment. In this study, the removal of AVS was analyzed from three aspects: firstly, AVS was oxidized with oxygen produced by CP. And then, Fe2+ could activate H2O2 produced by CP to generate hydroxyl radicals which have strong oxidation property to oxidize AVS. Finally, AVS was removed by bacterial denitrification. The results showed that the AVS removal rate could reach 71% compared with the blank group on the 25th day. With the addition of CP and Fe3O4@BC, the content of overlying water remained at 0.1 mg/L, which was due to the conversion of NH4Cl-P and Fe/Al-P in sediments into Ca-P to inhibit the release of phosphorus. At the same time, the acid extractable state and the reducible state of Cr in the sediment also decreased to 0.58% and 0.97%, which inhibited the release and migration of the heavy metal Cr. In addition, the results of high-throughput genetic test showed that the CP+Fe3O4@BC group had a great increase in the total number of microorganisms compared to other groups. The abundance of Sulfurovum increased while that of sulphate-Reducing Bacteria (SRBs) was inhibited. Moreover, an abundance of denitrifying bacteria (Dechlorominas, Acinetobacter and Flavobacterium) was increased. This study showed that the combined application of Fe3O4@BC composites and CP had a remarkable effect on the urban sediment treatment, which provided a new way to remove sediment pollution.

show abstract

Exploring carbonaceous nanomaterials for arsenic and chromium removal from wastewater

Cited by 62 publications

References 132 publications

Recent Advances in Biomass-Based Waste Materials for the Removal of Chromium (VI) from Wastewater: A Review

Recent Advances in Biomass-Based Waste Materials for the Removal of Chromium (VI) from Wastewater: A Review

Utilization of Tires Waste-Derived Magnetic-Activated Carbon for the Removal of Hexavalent Chromium from Wastewater

Synergistic effects of calcium peroxide and Fe3O4@BC composites on AVS removal, phosphorus and chromium release in sediments

Contact Info

Product

Resources

About