Extraction and application of starch-based coagulants from sago trunk for semi-aerobic landfill leachate treatment

Aziz, Hamidi Abdul; Sobri, Nur Izzati Mohamad

doi:10.1007/s11356-015-4895-7

Cited by 32 publications

(8 citation statements)

References 34 publications

(43 reference statements)

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“…OPTS particles showed a bimodal distribution of granular size as explained by the previous researchers, which is also similar to the other cereal starches like wheat, and barley (Gilbert et al, 2010) but the granule size of sago starch (15-50µm) is higher than oil palm trunk starch (Aziz and Sobri, 2015). Starch granular deformation is responsible for the reduction of its molecular weight significantly.…”

Section: Particle Size and Polydispersity Indexsupporting

confidence: 80%

“…Although extracting the starch from the cells of the abrasive vascular bundles of oil palm trunk is quite hard, rather this combination of proposed method augmented the yield remarkably higher than the yield demonstrated by previous researchers regarding starch extraction from oil palm trunk (Abd Karim et al, 2020), sago trunk (Aziz and Sobri, 2015) and cassava peel or potatoes (Waterschoot et al, 2015).…”

Section: Starch Yield From Oil Palm Trunkmentioning

confidence: 78%

“…Na, K, Mg, with carbon (C) and oxygen (O) in oil palm trunk starch according to the Energy Dispersive X-Ray Analysis (EDX) analysis. Ample existence of oxygen has followed in OPTS due to the lavish combination of carbohydrate (Aziz and Sobri, 2015). Furthermore, carbohydrates are broken down in form of energy through using oxygen.…”

Section: Sem-edx Investigations Outcomesmentioning

confidence: 99%

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Optimization of the Novel Bisulfite Steeping Method by Response Surface Methodology for Natural Starch Synthesis From Oil Palm Trunk Biomass

Ahmed

Yusoff

Kamal

et al. 2020

Preprint

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Malaysia is the 2nd largest in palm oil export, and after overcoming economic age (average 25 years), the palm oil trees entail to replace usually. Therefore, a massive quantity of palm oil trunk biomass, containing a significant amount of starch, is available as bio-waste annually. The efficient extraction of this starch (carbohydrate polymer) would be worthwhile concerning the environment, economy, conversion of biowaste to bioresources, and waste dumping challenges. Central composite design executed an experimental model design, evaluated the impacts of process variables and their interaction through response surface methodology to optimize the novel bisulfite steeping method for starch synthesis. Design-Expert software performed the data analysis. The developed quadratic models for four factors (Strength of Sodium bisulfite solution, steeping hour, mixing ratio with the bisulfite solution and ultra-pure water) and one response (%Yield), demonstrated that a significant starch yield (13.54%) is achievable utilizing 0.74% bisulfite solution, 5.6 steeping hours, for 1.6 and 0.6 mixing ratio with the bisulfite solution and ultra-pure water respectively. Experimental outcomes were quite consistent with the predicted model, which eventually sustains the significance of this method. Malvern Zetasizer test revealed a bimodal granular distribution for starch, with 7.15µm of hydrodynamic size. Starch morphology was determined by scanning electron microscopy. X-ray diffraction investigation exhibits an A-type model, specifying persistent characteristics of extracted starch.

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Section: Particle Size and Polydispersity Indexsupporting

confidence: 80%

Section: Starch Yield From Oil Palm Trunkmentioning

confidence: 78%

Section: Sem-edx Investigations Outcomesmentioning

confidence: 99%

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Optimization of the Novel Bisulfite Steeping Method by Response Surface Methodology for Natural Starch Synthesis From Oil Palm Trunk Biomass

Ahmed

Yusoff

Kamal

et al. 2020

Preprint

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“…This is in contrast with the present study, which used natural high-strength ammonia through the novel ZAEP treatment. In addition, water matrix landfill leachate was also utilized as the electrolyte to evaluate the effectiveness of this process, which is known as the real wastewater that is difficult to be treated due to the various contents of complex organic compounds, heavy metals, and other contaminants [66,67]. Therefore, this present research produced a high-performance ammonia removal of up to 71%, without any required ancillary processes for further efficiency enhancement, owing to its ability and effectiveness in contaminant removal.…”

Section: Comparison Of Treatment Performancementioning

confidence: 99%

Optimization and Analysis of Zeolite Augmented Electrocoagulation Process in the Reduction of High-Strength Ammonia in Saline Landfill Leachate

Hamid

Aziz

Yusoff

et al. 2020

Water

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This work examined the behavior of a novel zeolite augmented on the electrocoagulation process (ZAEP) using an aluminum electrode in the removal of high-strength concentration ammonia (3471 mg/L) from landfill leachate which was saline (15.36 ppt) in nature. For this, a response surfaces methodology (RSM) through central composite designs (CCD) was used to optimize the capability of the treatment process. Design-Expert software (version 11.0.3) was used to evaluate the influences of significant variables such as zeolite dosage (100–120 g), current density (540–660 A/m2), electrolysis duration (55–65 min), and initial pH (8–10) as well as the percentage removal of ammonia. It is noted that the maximum reduction of ammonia was up to 71%, which estimated the optimum working conditions for the treatment process as follows: zeolite dosage of 105 g/L, the current density of 600 A/m2, electrolysis duration of 60 min, and pH 8.20. Furthermore, the regression model indicated a strong relationship between the predicted values and the actual experimental results with a high R2 of 0.9871. These results provide evidence of the ability of the ZAEP treatment as a viable alternative in removing high-strength landfill leachate of adequate salinity without the use of any supporting electrolyte.

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“…Plant based polysaccharide comprises in various form, such as starch, pectin, gum, etc. Rice, wheat, corn, and sago starch have showed a promising result as natural coagulant (Teh et al 2014;Aziz and Sobri 2015;Choy et al 2016); however its utilization could pose some problems due to food issues, thus non-food alternatives should be explored to handle this problem.…”

Section: Introductionmentioning

confidence: 99%

Utilization of galactomannan from spent coffee grounds as coagulant aid to treat synthetic Congo red wastewater

Kristianto

Saraswati

Prasetyo

et al. 2021

Preprint

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Over the last few years, there is a significant growth in research exploring natural based coagulant due to its various benefits to decrease or even substitute the usage of inorganic chemical coagulants. Polysaccharide based coagulant and coagulant aid is a promising source for this purpose, due to its abundance. In this study, we reported utilization of galactomannan extracted from spent coffee grounds as natural coagulant aid in coagulation of Congo red synthetic wastewater. The coagulation was done at fixed dosage of FeCl3 (160 mg/L) and pH of 6. The effect of galactomannan as coagulant aid was observed by varying galactomannan dosage (0-140 mg/L) and Congo red concentration (20–70 mg/L). It was found that galactomannan as coagulant aid could increase the removal of Congo red, around 30–90% removal, depends on Congo red concentration, compared FeCl3 only (0–65%). The coagulation adsorption study was also investigated using Langmuir, Freundlich, and Brunauer – Emmet – Teller (BET) isotherm models. It was found that Congo red coagulation using FeCl3 only was following Langmuir isotherm, indicating monolayer – homogenous formation during the coagulation. On the other hand, with the presence of galactomannan the coagulation was best described by BET isotherm, indicating multilayer – heterogeneous adsorption, possibly due to interparticle bridging of galactomannan during colloid aggregation. The findings in this study suggest synergistic effect of galactomannan and FeCl3 in the coagulation process and proved potential of galactomannan from spent coffee grounds as natural coagulant aid.

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Extraction and application of starch-based coagulants from sago trunk for semi-aerobic landfill leachate treatment

Cited by 32 publications

References 34 publications

Optimization of the Novel Bisulfite Steeping Method by Response Surface Methodology for Natural Starch Synthesis From Oil Palm Trunk Biomass

Optimization of the Novel Bisulfite Steeping Method by Response Surface Methodology for Natural Starch Synthesis From Oil Palm Trunk Biomass

Optimization and Analysis of Zeolite Augmented Electrocoagulation Process in the Reduction of High-Strength Ammonia in Saline Landfill Leachate

Utilization of galactomannan from spent coffee grounds as coagulant aid to treat synthetic Congo red wastewater

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