Column studies on the removal of dissolved organic carbon, turbidity and heavy metals from stormwater using granular activated carbon

Sounthararajah, Danious Pratheep; Loganathan, P.; Kandasamy, Jaya; Vigneswaran, S.

doi:10.1080/19443994.2014.999717

Cited by 27 publications

(13 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This can lead to pressure head loss. However, this problem can be overcome by either encapsulating the material on a coarser material [24,25] or physically mixing it with a coarser material such as granular activated carbon (GAC) [26].…”

Section: Desalination and Water Treatmentmentioning

confidence: 99%

Rubidium recovery using potassium cobalt hexacyanoferrate sorbent

Nur

Naidu

Loganathan

et al. 2016

Desalination and Water Treatment

Self Cite

View full text Add to dashboard Cite

A B S T R A C TRubidium (Rb) is a highly valued and economically important metal present in large quantities in many natural and wastewaters. However, its recovery is hampered by its low concentration and extracting agents' limited selectivity. A batch sorption study showed that a potassium cobalt hexacyanoferrate (KCoFC) sorbent had much higher sorption capacities for Rb and caesium (Cs) than for lithium (Li), sodium (Na) and calcium (Ca). Equilibrium sorption data at pH 7 and 24 ± 1˚C for Rb and Cs satisfactorily fitted to the Langmuir model with sorption maxima of 96 and 61 mg/g, respectively. A fixed-bed column (12 cm height) containing a mixture of 2.2 g KCoFC and 19.8 g granular activated carbon had a breakthrough sorption capacity of 61 mg/g when a solution containing 5 mg Rb/L was passed through the column at a velocity of 2.5 m/h (0.7 L/h). When 1 and 5 mg Cs/L were added to the Rb solution, Rb sorption capacity dropped to 46 and 41 mg/g, respectively. During Rb sorption, K from the KCoFC lattice was released. Leaching the column containing sorbed Rb with 0.1 M KCl for 60 min at a velocity of 10 m/h desorbed 99% of sorbed Rb. A process for recovering Rb from sea water reverse osmosis brine is presented.

show abstract

Section: Desalination and Water Treatmentmentioning

confidence: 99%

Rubidium recovery using potassium cobalt hexacyanoferrate sorbent

Nur

Naidu

Loganathan

et al. 2016

Desalination and Water Treatment

Self Cite

View full text Add to dashboard Cite

show abstract

“…Activated carbon‐amended columns were studied in the removal of organic compounds from actual stormwater (Björklund & Li, 2017; Kus, Kandasamy, Vigneswaran, Shon, & Moody, 2012; Sounthararajah, Loganathan, Kandasamy, & Vigneswaran, 2016) and phenols, phthalates, and polychlorinated biphenyls from synthetic stormwater (Björklund & Li, 2017; Jaradat, Grimberg, Holsen, & Ghosh, 2010; Ulrich, Im, Werner, & Higgins, 2015). Björklund and Li (2017) showed that the addition of activated carbon to a column increased bioretention media adsorption capacity of stormwater containing the listed organic compounds.…”

Section: Introductionmentioning

confidence: 99%

Activated carbon column adsorption of compounds that mimic urban stormwater dissolved organic nitrogen

Mohtadi

James

Davis

2020

Water Environment Research

View full text Add to dashboard Cite

Nutrients mobilized by stormwater can exacerbate eutrophication in receiving waters. While bioretention systems are increasingly employed to improve stormwater quality, they do not normally incorporate design attributes for removal of dissolved organic nitrogen (DON). Thus, the current study concentrated on continuous column adsorption of stormwater DON using a media mixture of coal activated carbon and quartz sand. Adsorption of eight model organic nitrogenous compounds was studied and only pyrrole showed an appreciable adsorption performance; other organic nitrogen compounds were weakly adsorbed. The breakthrough depth for pyrrole was 88 m (equivalent to 4.4 m simulated rainfall depth), at a superficial velocity of 61 cm/hr and influent DON concentration of 1 mg N/L. Subsequent experiments revealed that adsorption of pyrrole was minimally affected by superficial velocity, such that its DON removal efficiency was greater than 91% for all tested superficial velocities (7–489 cm/hr). Accordingly, adsorption processes may be employed for removing stormwater DON fractions behaving similarly to pyrrole; data suggest DON removal initially at greater than 95%, gradually falling to 30% through 25 years of service. Practitioner points Adsorption of eight different organic nitrogenous compounds onto coal‐based activated carbon was investigated. Amino acids and an amino sugar were weakly adsorbed onto the activated carbon. Pyrrole, a moderately hydrophobic heterocyclic organic nitrogen compound was effectively adsorbed. A 30‐cm depth was considered as adequate for removal of pyrrole and compounds that would similarly adsorb. Evidence of biological ammonification was present in all studies except for pyrrole.

show abstract

“…Granular activated carbon (GAC) is a widely used and versatile adsorbent in the water treatment process because it can remove many pollutants, such as organic carbon, turbidity, and nutrients [ 5 , 6 , 7 , 8 ]. GAC has also proved to be effective in removing many heavy metals [ 2 , 9 , 10 ]. The efficiency of GAC in removing pollutants using the adsorption process is due to its large surface area (500–1500 m 2 /g), internal microporosity, the presence of different types of functional groups, low cost, and easy availability [ 6 , 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

Effects of Humic Acid and Suspended Solids on the Removal of Heavy Metals from Water by Adsorption onto Granular Activated Carbon

Sounthararajah

Loganathan

Kandasamy

et al. 2015

IJERPH

Self Cite

View full text Add to dashboard Cite

Heavy metals constitute some of the most dangerous pollutants of water, as they are toxic to humans, animals, and aquatic organisms. These metals are considered to be of major public health concern and, therefore, need to be removed. Adsorption is a common physico-chemical process used to remove heavy metals. Dissolved organic carbon (DOC) and suspended solids (SS) are associated pollutants in water systems that can interact with heavy metals during the treatment process. The interactions of DOC and SS during the removal of heavy metals by granular activated carbon were investigated in batch and fixed-bed column experiments. Batch adsorption studies indicated that Langmuir adsorption maxima for Pb, Cu, Zn, Cd, and Ni at pH 6.5 were 11.9, 11.8, 3.3, 2.0, and 1.8 mg/g, respectively. With the addition of humic acid (HA) (DOC representative), they were 7.5, 3.7, 3.2, 1.6, and 2.5 mg/g, respectively. In the column experiment, no breakthrough (complete removal) was obtained for Pb and Cu, but adding HA provided a breakthrough in removing these metals. For Zn, Cd and Ni, this breakthrough occurred even without HA being added. Adding kaolinite (representative of SS) had no effect on Pb and Cu, but it did on the other metals.

show abstract

Column studies on the removal of dissolved organic carbon, turbidity and heavy metals from stormwater using granular activated carbon

Cited by 27 publications

References 26 publications

Rubidium recovery using potassium cobalt hexacyanoferrate sorbent

Rubidium recovery using potassium cobalt hexacyanoferrate sorbent

Activated carbon column adsorption of compounds that mimic urban stormwater dissolved organic nitrogen

Effects of Humic Acid and Suspended Solids on the Removal of Heavy Metals from Water by Adsorption onto Granular Activated Carbon

Contact Info

Product

Resources

About