Green and Sustainable Pathways for Wastewater Purification

Yadav, Manavi; Gupta, Radhika; Sharma, Rakesh Kumar

doi:10.1016/b978-0-12-814790-0.00014-4

Cited by 120 publications

(47 citation statements)

References 66 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Natural coagulants have shown a strong potential over conventional, synthetic, and inorganic coagulants, and have become the primary focus of water operators in sustainable water treatment facilities [ 26 ]. Additionally, the positive attributes of these coagulants (green chemicals) are their limited side effects on the environment, and their isolation from natural and renewable resources provides additional benefits in reducing the costs associated with sludge disposal [ 27 , 28 ]. Traditional methods of coagulation or flocculation make use of synthetic or chemical coagulants such as aluminum sulfate (alum) and iron salts, but they pose serious health hazards to humans, such as neurodegenerative and gastrointestinal disorders [ 29 ].…”

Section: Discussionmentioning

confidence: 99%

Study to Investigate the Potential of Combined Extract of Leaves and Seeds of Moringa oleifera in Groundwater Purification

Alam

Pandey²,

Khan³

et al. 2020

IJERPH

View full text Add to dashboard Cite

Several parts of the Moringa oleifera plant have revealed incredible potential for water quality improvement. However, the purification potential of a combined leaf and seed extract of Moringa oleifera plants remains unexplored. To the best of our knowledge, this research would be the first to work towards exploiting the combined potential of a leaf and seed extract of the Moringa oleifera plant in the process of water purification. In this study, we investigated the combined effectiveness of the leaf and seed extract in the purification of groundwater. The jar test method was used to analyze the effectiveness of Moringa plant extract (in combination) on different quality parameters of groundwater. Treatment with the combined plant extract (seed and leaf) resulted in significant improvement of various physicochemical (hardness, pH, turbidity, Total Dissolved Solid (TDS), and metallic impurities) and biological parameters (E.coli count) over individual seed and leaf extracts in groundwater samples. Experimental findings have strongly shown the enhanced purification efficacy of the hexane extract of combined plant materials in comparison to the individual extracts, thereby providing us with a potent natural coagulant that could combat the side effects of chemical coagulants.

show abstract

Section: Discussionmentioning

confidence: 99%

Study to Investigate the Potential of Combined Extract of Leaves and Seeds of Moringa oleifera in Groundwater Purification

Alam

Pandey²,

Khan³

et al. 2020

IJERPH

View full text Add to dashboard Cite

show abstract

“…At 120 min, Sim2 had the best result of Cu 2+ removal (71%), representing a notable mean reduction of copper from 0.0176 g/l (~9 times larger than the permissible limit in wastewater of 0.002 g/l) to 0.0051 g/l that is only~2.6 times larger than the permitted level (0.002 g/l) by the WHO [29]. This was followed by Seq1 (66%), whilst Sim1 (42%) and Seq2 Further, inferentially, our statistical model indicated that the treatment combination, the sampling time, and their interactions highly significantly affected Cu 2+ removal (X 2 (4,51) = 99.43, P < 0.0001), (X 2 (4,51) = 196.53, P < 0.0001), and (X 2 (20,51) = 85.48, P < 0.0001), respectively;…”

Section: Sims Vs Seqsmentioning

confidence: 96%

On copper removal from aquatic media using simultaneous and sequential iron-perlite composites

Khudr

Ibrahim

Garforth

et al. 2021

Journal of Water Process Engineering

View full text Add to dashboard Cite

Mouhammad Shadi Khudr (MSK) conceived and designed the study, statistically analysed the data, co-produced the figures, and enriched and produced the manuscript. Yassin Mohamed Elhassan Ibrahim (YMEI) performed the experiment, analysed the samples, and co-produced the figures and the manuscript. Arthur Garforth (AG) reviewed and contributed to the production and enrichment of the manuscript. Abdullatif Alfutimie (AA) hosted the work, provided insights on the experimental design, contributed materials and analysis tools. AA contributed to the enrichment and production of the manuscript.

show abstract

Section: Sims Vs Seqsmentioning

confidence: 96%

On copper removal from aquatic media using simultaneous and sequential iron-perlite composites

Khudr¹,

Ibrahim²,

Garforth³

et al. 2020

Preprint

View full text Add to dashboard Cite

The use of reusable, affordable, and inert adsorbents as a means to mitigate copper pollution, with a lesser burden on the environment, has been attracting some attention. However, aiding the adsorption process of a promising adsorbent, such as expanded volcanic glass (perlite), with a reducing companion, such as solid iron, that can displace and dispose of copper from polluted water has never been tested before. In this laboratory study, we investigated the removal of Cu2+, resulting from contaminating freshwater with copper sulphate pentahydrate, using simultaneous or non-simultaneous (sequential) mixes of expanded perlite and iron coarse powder over 23 hours. The percentage of copper removed was calculated at 15 min, 40 min, 120 min, 300 min, and 1380 min using induced coupled plasma (ICP-OES). A rapid removal of 71% at 120 min was achieved when the perlite and iron were added simultaneously in separate permeable pouches; the application of the iron after the perlite led to 78% of removal at 1380 min that was almost identical to what was accrued via perlite alone (77%). This, therefore, suggests that the presence of iron is most advantageous in the short run as it leads to fast uptake of Cu2+, attributable to the combined action of the reduction of Cu2+ by iron and Cu2+ adsorption by perlite. Further investigation in support of the results was carried out using Energy-Dispersive X-Ray Spectroscopy (EDAX), X-Ray Diffraction (XRD), Brunauer, Emmett and Teller (BET), and Fourier-Transform Infrared Spectroscopy (FTIR). The findings of this multidisciplinary work provide insights and mechanisms for heavy metal removal from water in a relatively short time using a novel time-specific combination of iron and perlite and thus merit wider testing across different classes of adsorbents, pollutants, and water systems.

show abstract

Green and Sustainable Pathways for Wastewater Purification

Cited by 120 publications

References 66 publications

Study to Investigate the Potential of Combined Extract of Leaves and Seeds of Moringa oleifera in Groundwater Purification

Study to Investigate the Potential of Combined Extract of Leaves and Seeds of Moringa oleifera in Groundwater Purification

On copper removal from aquatic media using simultaneous and sequential iron-perlite composites

On copper removal from aquatic media using simultaneous and sequential iron-perlite composites

Contact Info

Product

Resources

About