Cocopeat for Wastewater Treatment in the Developing World. I: Comparison to Traditional Packing Media in Lab Scale Biofiltration Columns

Danley-Thomson, Ashley; Gardner, Courtney M.; Gwin, Carley A.; Gunsch, Claudia K.

doi:10.1061/(asce)ee.1943-7870.0000995

Cited by 7 publications

(6 citation statements)

References 21 publications

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“…Low SC indicates that the active sites present for sorption were insufficient to contain the diesel fuel molecules. The saturation was achieved rapidly and most of the free oil molecules remained when the molecules were attached to the CP surface at a high diesel concentration [36,57,58]. Past investigations had reported similar evaluations on the effect of initial diesel concentration for coconut-based biosorbents [27,28,30].…”

Section: Effects Of Diesel Concentrationmentioning

confidence: 74%

“…The physical properties of CP are highly dependent on the processing technique. It has a very high water-holding capacity, and its use as a sorbent for pollutant (heavy metals, dyes, phenolic compounds and radionuclides) removal has also been studied [17,28,[36][37][38][39]. CP is available in dust particles, which requires extra care when handling, particularly considering the enormous surface area of water.…”

Section: Introductionmentioning

confidence: 99%

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Coco Peat as Agricultural Waste Sorbent for Sustainable Diesel-Filter System

Verasoundarapandian

Zakaria

Shaharuddin

et al. 2021

Plants

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Oil spill incidents are hazardous and have prolonged damage to the marine environment. Management and spill clean-up procedures are practical and rapid, with several shortcomings. Coco peat (CP) and coco fibre (CF) are refined from coconut waste, and their abundance makes them desirable for diesel spillage treatment. Using a filter-based system, the selectivity of coco peat sorbent was tested using CP, CF and peat-fibre mix (CPM). CP exhibited maximal diesel sorption capacity with minimal seawater uptake, thus being selected for further optimisation analysis. The heat treatment considerably improved the sorption capacity and efficiency of diesel absorbed by CP, as supported by FTIR and VPSEM–EDX analysis. Conventional one-factor-at-a-time (OFAT) examined the performance of diesel sorption by CP under varying parameters, namely temperature, time of heating, packing density and diesel concentration. The significant factors were statistically evaluated using response surface methodology (RSM) via Plackett–Burman design (PB) and central composite design (CCD). Three significant (p < 0.05) factors (time, packing density and diesel concentration) were identified by PB and further analysed for interactions among the parameters. CCD predicted efficiency of diesel absorbed at 59.92% (71.90 mL) (initial diesel concentration of 30% v/v) and the experimental model validated the design with 59.17% (71.00 mL) diesel sorbed at the optimised conditions of 14.1 min of heating (200 °C) with packing density of 0.08 g/cm3 and 30% (v/v) of diesel concentration. The performance of CP in RSM (59.17%) was better than that in OFAT (58.33%). The discoveries imply that natural sorbent materials such as CP in oil spill clean-up operations can be advantageous and environmentally feasible. This study also demonstrated the diesel-filter system as a pilot study for the prospective up-scale application of oil spills.

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