Phytoremediation of Heavy Metals from Urban Waste Leachate by Southern Cattail (Typha domingensis)

Mojiri, Amin; Aziz, Hamidi Abdul; Zahed, Mohammad Ali; Aziz, Shuokr Qarani; Selamat, Mohamad Razip

doi:10.12983/ijsres-2013-p063-070

Cited by 29 publications

(22 citation statements)

References 20 publications

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“…Mojiri et al (2013) suggests that Typha domingensis is an effective accumulator plant for phytoremediation of some heavy metals (Pb, Ni and Cd). Typha angustifolia has been proven to be strongly tolerant to Cd stress, and adding Cd could even increase its height and biomass (Bah et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Effects of nitric oxide on alleviating cadmium stress in Typha angustifolia

et al. 2015

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Nitric oxide (NO) is a key signal molecule that is involved in plant response to various abiotic stresses. The present study was conducted to investigate the effects of NO on Typha angustifolia which has been subjected to cadmium stress. Our results showed that sodium nitroprusside (SNP, a NO donor) treatment could significantly mitigate both the Cd (CdCl 2 Á2.5H 2 O)-induced increase of malondialdehyde content in the root and relative electrolyte leakage in the root and leaf. NO demonstrated a reduced or counteractive effect on the Cd-induced increase in the activities of some typical antioxidant enzymes. The Cdinduced changes on the contents of non-protein thiol and phytochelatins in the root could also be reversed by NO. The protected effect of NO is likely achieved through trapping Cd in the root and decreasing Cd accumulation in the leaf and sheath. Furthermore, NO enhanced the allocation of Cd in the cell wall and reduced the distribution of Cd in the soluble fraction of the root and leaf. Differential biosynthesis of ascorbic acid content in some tissues might also be responsible for the protected effect of NO. This study concludes that NO counteracts Cd toxicity strongly in T. angustifolia via regulating antioxidant metabolism and enhancing Cd accumulation in the cell wall of the root.

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Section: Introductionmentioning

confidence: 99%

Effects of nitric oxide on alleviating cadmium stress in Typha angustifolia

et al. 2015

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“…The design included k 2 factorial points supported by 2k axial points and a center point, where k represents the number of variables (Mojiri et al, 2013). A number of researchers used RSM to optimize pollutant removal from leachates and wastewater (Mohajeri et al, 2010;Umar et al, 2011;Adlan et al, 2011).…”

Section: Discussionmentioning

confidence: 99%

Molybdenum(VI) removal from aqueous solutions using bentonite and powdered cockle shell; Optimization by response surface methodology

Mojiri

Ahmad

Tajuddin

et al. 2017

Global NEST Journal

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Removal of Mo(VI) from aqueous solutions by using bentonite and powdered cockle shell was conducted in this research. First, the effects of pH and initial Mo(VI) concentration on the Mo removal efficiency via shell and bentonite were studied. Results showed that Mo removal effectiveness increased as pH increased until 3.5. Removal efficiency of Mo via bentonite and shell also increased as initial Mo(VI) concentration increased to 30 or 40 mg/L, respectively, after which the removal efficiency decreased. Response surface methodology and central composite design were applied to optimize removal effectiveness. Initial concentration of Mo(VI) (mg/L), pH, and shaking time (min) were selected as independent factors. These results showed that bentonite is more effective in removing Mo from water than the shell. At the optimum condition of 5.8 pH, initial Mo concentration of 39.2 mg/L, and shaking time of 38.6 min, bentonite could remove 81.3% of Mo.

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“…where Y is the response; Xi and Xj are the variables; β0 is a constant coefficient; βj, βjj, and βij are the interaction coefficients of linear, quadratic and second-order terms, respectively; k is the number of study factors; and e is the error (Mojiri et al, 2013b). The outcomes were finally analyzed by analysis of variance (ANOVA) in the Design Expert Software.…”

Section: Experimental Plan and Data Analysismentioning

confidence: 99%

Zeolite and Activated Carbon Combined with Biological Treatment for Metals Removal from Mixtures of Landfill Leachate and Domestic Wastewater

Mojiri

Aziz

Liu

et al. 2015

Global NEST Journal

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Current study was carried out to investigate the heavy metals removal from landfill leachate and urban wastewater by powdered activated carbon and powdered zeolite augmented SBR technique. The research was carried out in six 2000 mL breakers (working size was 1200 ml). The reactors were parted into 2 groups covering 3 for activated carbon augmented SBRs (PAC-SBR), and 3 for powdered zeolite augmented SBRs (PZE-SBR). The response surface methodology (RSM) and the central composite design (CCD) were employed to explain the most advantageous settings of the independent variables (aeration rate (l min -1 ), reaction time (h), and leachate-to-wastewater mixing ration (%; v/v) and their resopnses (dependent variables including Fe, Mn, Ni and Cd). The results indicated that the PZE-SBR showed higher performance in removal efficiencies while compared to PAC-SBR. At the optimum conditions of contact time (13.83 h), aeration rate (2.81 l min -1 ) and leachate to domestic wastewater proportion (20.00%) for the PZE-SBR, the removal efficiencies for Fe, Mn, Ni, and Cd were 65.65%, 61.56, 63.41%, and 60.44%, respectively.

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Phytoremediation of Heavy Metals from Urban Waste Leachate by Southern Cattail (Typha domingensis)

Cited by 29 publications

References 20 publications

Effects of nitric oxide on alleviating cadmium stress in Typha angustifolia

Effects of nitric oxide on alleviating cadmium stress in Typha angustifolia

Molybdenum(VI) removal from aqueous solutions using bentonite and powdered cockle shell; Optimization by response surface methodology

Zeolite and Activated Carbon Combined with Biological Treatment for Metals Removal from Mixtures of Landfill Leachate and Domestic Wastewater

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