Removal of chromium(VI) from solution by coconut husk and palm pressed fibres

Tan, Wee Tee; Ooi, S.; Lee, Chnoong Kheng

doi:10.1080/09593339309385290

Cited by 229 publications

(74 citation statements)

References 4 publications

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“…The need for safe and economical methods for the removal of heavy metals from waste water has necessitated research low-cost agricultural waste by-products, such as sugarcane bagasse , rice husk (Srinivasan et al 1998), sawdust (Ajmal et al 1996), coconut husk (Tan et al 1993), oil palm shell (Khan et al 2003), and Moringa oleifera pod , for the removal of heavy metals from waste water, have been investigated by various researchers. Cost is an important parameter for comparing the adsorbent materials.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of removal efficiency of heavy metals by low-cost activated carbon prepared from African palm fruit

2016

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This study details the removal of heavy metals; Cadmium, Copper, Nickel, and Lead from wastewater effluent using an activated carbon produced from African palm fruit. The effluent was obtained from Old Panteka market; a metal scrap Market located in Kaduna State, Nigeria, which has several components that constitute high level of pollution in the environment. The effect of temperature and contact time on the removal of these heavy metals using the activated carbon produced was investigated. The activated carbon showed a significant ability in removing heavy metals; Cadmium, Copper, Nickel, and Lead from the wastewater. Higher percentage removal was observed at a temperature of 80°C (93.23 ± 0.035, 96.71 ± 0.097, 92.01 ± 0.018, and 95.42 ± 0.067 % for Cadmium, Copper, Nickel, and Lead, respectively) and at an optimum contact time of 60 min (99.235 ± 0.148, 96.711 ± 0.083, 95.34 ± 0.015, and 97.750 ± 0.166 % for Cadmium, Copper, Nickel, and Lead, respectively) after which the percentage removal decreases. This work, therefore, suggests that African palm fruit can be successfully applied to solve this environmental pollution.

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Section: Introductionmentioning

confidence: 99%

Evaluation of removal efficiency of heavy metals by low-cost activated carbon prepared from African palm fruit

2016

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“…The ability of poplar sawdust to bind heavy metal ions was investigated and the result showed that the metal ions were selectively adsorbed on the sawdust [4]. Coconut shell has high affinity for metal ions due to the presence of functional groups such as carboxylic, lactone and phenolic hydroxylic groups [5]. However, RIAB has many disadvantages, and one of which is the leaching of organic pollutants, which may cause further pollution [6,7].…”

Section: Introductionmentioning

confidence: 99%

Removal of lead from water using biochars prepared from hydrothermal liquefaction of biomass

Liu

Zhang

2009

Journal of Hazardous Materials

624

228

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a b s t r a c tHydrothermal conversion of biomass into biofuel could produce a special type of biochar as byproduct. This biochar is quite different from biochar derived from high temperature pyrolysis. In the present study, two biochars, prepared from hydrothermal liquefaction of pinewood (P300) and rice husk (R300), were characterized and investigated for lead removal from aqueous solution. The results indicated that the biochars contained a large amount of oxygen-containing groups on the surface, which were quite effective for lead removal with capacities of 4.25 and 2.40 mg/g for P300 and R300, respectively. The adsorption equilibrium was achieved around 5 h. Higher temperature favored the removal capacity implying that the adsorption was an endothermic process. The adsorption data at optimum solution pH 5 could be well described by Langmuir model and the adsorption process was well fitted by pseudo-second-order model. Moreover, it was found that the adsorption was mainly controlled by film diffusion. Thermodynamics analysis suggested that lead adsorption onto the biochars was physical endothermic process.

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“…Preliminary studies have shown that it is feasible to prepare chars with sufficient densities and high porosity from oil palm fruit waste (Guo and Lua, 1998). The exchange/sorption properties of palm oil shell are due to the presence of some functional groups, such as carboxylic, hydroxyl, and lactone, which have a high affinity for metal ions (Tan et al 1993). In recent years, development of surface modified activated carbon has generated a diversity of activated carbon with far superior adsorption capacity.…”

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confidence: 99%

Removal of heavy metal from industrial wastewater using chitosan coated oil palm shell charcoal

Nomanbhay¹,

Palanisamy²

2005

Electro Journal of Biotech

330

174

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This research focuses on understanding biosorption process and developing a cost effective technology for treatment of heavy metals-contaminated industrial wastewater. A new composite biosorbent has been prepared by coating chitosan onto acid treated oil palm shell charcoal (AOPSC). Chitosan loading on the AOPSC support is about 21% by weight. The shape of the adsorbent is nearly spherical with particle diameter ranging 100~150 µm. The adsorption capacity of the composite biosorbent was evaluated by measuring the extent of adsorption of chromium metal ions from water under equilibrium conditions at 25ºC. Using Langmuir isotherm model, the equilibrium data yielded the following ultimate capacity values for the coated biosorbent on a per gram basis of chitosan: 154 mg Cr/g. Bioconversion of Cr (VI) to Cr (III) by chitosan was also observed and had been shown previously in other studies using plant tissues and mineral surfaces. After the biosorbent was saturated with the metal ions, the adsorbent was regenerated with 0.1 M sodium hydroxide. Maximum desorption of the metal takes place within 5 bed volumes while complete desorption occurs within 10 bed volumes. Details of preparation of the biosorbent, characterization, and adsorption studies are presented. Dominant sorption mechanisms are ionic interactions and complexation.

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Removal of chromium(VI) from solution by coconut husk and palm pressed fibres

Cited by 229 publications

References 4 publications

Evaluation of removal efficiency of heavy metals by low-cost activated carbon prepared from African palm fruit

Evaluation of removal efficiency of heavy metals by low-cost activated carbon prepared from African palm fruit

Removal of lead from water using biochars prepared from hydrothermal liquefaction of biomass

Removal of heavy metal from industrial wastewater using chitosan coated oil palm shell charcoal

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