Modification of rice hull and sawdust sorptive characteristics for remove heavy metals from synthetic solutions and wastewater

Asadi, Fatemeh; Shariatmadari, H.; Mirghaffari, Nourollah

doi:10.1016/j.jhazmat.2007.10.046

Cited by 114 publications

(57 citation statements)

References 29 publications

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“…Owning to precipitation, the decrease of metal concentration in solutions limit the biosorption process, thus no observation was recorded. Similar findings by Babarinde et al [4] and Asadi et al [5] that have described that plant-based biosorbents showed similar trend of observation for Cu (II) and Ni (II) biosorption, respectively. It can be concluded that initial optimal pH plays a major role in biosorption process by influencing the active binding sites of biosorbent and the interaction with species of metal ions.…”

Section: Effect Of Phsupporting

confidence: 89%

Cloning and characterisation of ACC oxidase gene from Mas (AA) banana

Tay

Redzwan

Hooi

et al. 2012

MJS

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Biosorption behavior of Pleurotus mushroom spent-substrate was studied using two divalence cations: Ni(II) and Cu(II). Biosorption of both cations showed similar behavior on the effect of pH, initial concentration, temperature and contact time. Optimum biosorption was found to be between pH of 5-6, while lower initial concentration and temperature (as low as 10 mg.L -1 and 5 o C), increased the biosorption efficiency. Rapid biosorption was observed to occur within 4-5 minutes of contact time. Therefore, metal removal using PMSS as the biosorbent needs to address the four fundamental parameters. ABSTRAKKelakuan biopenjerapan bagi substrat terpakai cendawan Pleurotus dikaji dengan menggunakan dua kation dua valensi iaitu Ni(II) dan Cu(II). Faktor pH, kepekatan awal larutan, suhu dan masa interaksi memberikan kesan yang sama terhadap kedua kation yang dikaji. pH 5-6 merupakan paras pengoptimuman biopenjerapan. Sementara itu, kepekatan awal larutan dan suhu yang rendah (serendah 10 mg.L -1 dan 5 o C) telah meningkatkan kecekapan biopenjerapan. Kadar biopenjerapan maksima berlaku dalam tempoh masa bersentuhan selama 4-5 minit. Oleh itu, faktor pemboleh-ubah operasi penyingkiran logam dengan menggunakan PMSS sebagai bahan biopenjerap perlu mengambilkira empat kelakuan asas.(Keywords: biosorption behavior, Pleurotus sp., metal, mushroom spent-substrate)

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Section: Effect Of Phsupporting

confidence: 89%

Cloning and characterisation of ACC oxidase gene from Mas (AA) banana

Tay

Redzwan

Hooi

et al. 2012

MJS

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“…Sawdust consists of three dominant components: cellulose, lignocellulose and lignin, based on which its functional groups reputed to be actively involved in adsorption include C]CH, C]C, CeOH and CeOeC groups (Abdel-Ghani et al, 2007). Its main mechanisms of adsorption are ion exchange and hydrogen binding (Shukla et al, 2002), as well as, chelation and complexation reactions (Asadi et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Treatment of metal-contaminated wastewater: A comparison of low-cost biosorbents

Akunwa

Muhammad

Akunna

2014

Journal of Environmental Management

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This study aimed to identify some optimum adsorption conditions for the use of low-cost adsorbent, seaweed (Ascophyllum nodosum), sawdust and reed plant (Phragmites australis) root, in the treatment of metal contaminated wastewater for the removal of cadmium, chromium and lead. The effect of pH on the absorption capacity of each of these biosorbents was found to be significant and dependent on the metal being removed. Post-adsorption FTIR analysis showed significant binding activities at the nitro NO groups site in all biosorbents, especially for lead. Competitive metal binding was found to have possibly affected the adsorption capacity for chromium by A. nodosum more than it affected sawdust and P. australis root. Adsorption is believed to take place mainly by ion exchange particularly at low pH values. P. australis root exhibited the highest adsorption for chromium at pH 2, cadmium at pH 10 and lead at pH 7. A. nodosum seaweed species demonstrated the highest adsorption capacity of the three biosorbents used in the study, for cadmium at pH 7 and for lead at pH 2. Sawdust proved to be an efficient biosorbent for lead removal only at pH 7 and 10. No significant effect of temperature on adsorption capacity was observed, particularly for cadmium and lead removal.

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“…Among the available techniques, sorption has been used as one of the most practical methods and recent studies have focused on the search for an inexpensive and efficient adsorbent (Yadanaparthi et al, 2009). A wide variety of materials such as chitosan, granular red mud (Zhu et al, 2007), sugar beet pulp (Pehlivan et al, 2008), rice husk (Wong et al, 2003), rice bran Montanher et al, 2005;Ajmal et al, 2003), activated carbon (Giraldo and MorenoPiraján, 2008), Zeolite (Stylianou et al, 2007), sawdust (Asadi et al, 2008), cocoa shells (Meunier et al, 2003), Sargassum (Silva et al, 2003) and leaves (King et al, 2006) are examples of low-cost materials used in the removal of heavy metals.…”

Section: Introductionmentioning

confidence: 99%

Removal of lead from aqueous solution using waste tire rubber ash as an adsorbent

Mousavi

Hosseynifar

Jahed

et al. 2010

Braz. J. Chem. Eng.

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-The purpose of this study was to investigate the possibility of the utilization of waste tire rubber ash (WTRA) as a low cost adsorbent for removal of lead (II) ion from aqueous solution. The effect of different parameters (such as contact time, sorbate concentration, adsorbent dosage, pH of the medium and temperature) were investigated. The sorption process was relatively fast and equilibrium was reached after about 90 min of contact. The experimental data were analyzed by the Freundlich isotherm and the Langmuir isotherm. Equilibrium data fitted well with the Langmuir model with maximum adsorption capacity of 22.35 mg/g. The adsorption kinetics was investigated and the best fit was achieved by a first-order equation. The results of the removal process show that the Pb (II) ion adsorption on WTRA is an endothermic and spontaneous process. The procedure developed was successfully applied for the removal of lead ions in aqueous solutions.

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Modification of rice hull and sawdust sorptive characteristics for remove heavy metals from synthetic solutions and wastewater

Cited by 114 publications

References 29 publications

Cloning and characterisation of ACC oxidase gene from Mas (AA) banana

Cloning and characterisation of ACC oxidase gene from Mas (AA) banana

Treatment of metal-contaminated wastewater: A comparison of low-cost biosorbents

Removal of lead from aqueous solution using waste tire rubber ash as an adsorbent

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