Efficiency of pollutants removal in treated palm oil mill effluent (TPOME) using different concentrations of sodium alginate-immobilized Nannochloropsis sp. cells

Author(s):  
Quin Emparan ◽  
Razif Harun ◽  
Yew Sing Jye
Author(s):  
Man Djun Lee ◽  
Pui San Lee

This chapter presents the study on pollutant removal efficiency in palm oil mill effluent using chitosan and polyglutamic acid (PGA). Up until today, palm oil mill effluent (POME) has been considered one of the significant sources of environmental pollution. The characteristics of POME include contaminating the source of drinking water, which is also harmful to the aquatic ecosystem by creating a highly acidic environment or causing eutrophication. With increasing public awareness of environmental pollution, it creates the need to address this issue. Both chitosan and PGA are non-polluting food-based anionic and biodegradable biopolymers that are environmentally friendly in wastewater treatment. The critical parameter to determine the effectiveness of pollutants removal is chemical oxygen demand, colour, and total suspended solids. In this aspect, this chapter also discussed some of the significant findings done in previous studies to provide proper understandings and implications on this topic.


BioResources ◽  
2019 ◽  
Vol 14 (4) ◽  
pp. 9429-9443
Author(s):  
Quin Emparan ◽  
Razif Harun ◽  
Yew Sing Jye

The use of freely suspended cells of microalgae culture to treat wastewater is of current global interest because of their effective photosynthetic uptake of pollutants, carbon dioxide sequestration, and biomass production for desirable high value-products. Biomass immobilization is a promising option to overcome the harvesting problem that is encountered when using free-cells upon completion of the wastewater treatment process. In this study, Nannochloropsis sp. cells were immobilized in sodium alginate beads to eliminate the harvesting limitation. The microalgal beads were further cultivated in treated palm oil mill effluent (TPOME) for removal of chemical oxygen demand (COD). The effect of POME concentration on COD removal and microalgal cells growth was investigated, respectively. It was found that the maximum biomass concentration of 1.23 g/L and COD removal of 55% from 10% POME were achieved after 9 days. An increment of POME concentration did not cause any improvement to the treatment efficiency due to the inhibitory effect of high initial COD of POME on the biomass concentration and was further responsible for low COD removal. The immobilized cells showed a systematic growth, demonstrating that the beads are biocompatible as immobilization carrier. In conclusion, the immobilized microalgal cells could be a viable alternative technology system for POME treatment as well as biomass production.


2018 ◽  
Vol 174 ◽  
pp. 430-438 ◽  
Author(s):  
Wai Yan Cheah ◽  
Pau Loke Show ◽  
Joon Ching Juan ◽  
Jo-Shu Chang ◽  
Tau Chuan Ling

2020 ◽  
Author(s):  
Man Djun Lee ◽  
Pui San Lee

This chapter presents the study on pollutant removal in palm oil mill effluent using chitosan as natural coagulant. Up until today, palm oil mill effluent (POME) considered one of the significant sources of environmental pollution. The characteristics of POME include contaminating the source of drinking water, which also harmful to the aquatic ecosystem by creating a highly acidic environment or causing eutrophication. With increasing public awareness of environmental pollution, it creates the need to address this issue. Chitosan is non-polluting food-based anionic and biodegradable biopolymer that are environmentally friendly useful in wastewater treatment. The critical parameter to determine the effectiveness of pollutants removal is chemical oxygen demand, color, and total suspended solids. This chapter also presents and discusses some of the significant findings to provide proper understandings and implications in this topic.


2020 ◽  
Vol 12 (22) ◽  
pp. 9468 ◽  
Author(s):  
Briant Kang Xian Ho ◽  
Baharin Azahari ◽  
Mohd Firdaus Bin Yhaya ◽  
Amir Talebi ◽  
Charles Wai Chun Ng ◽  
...  

The suitability of bacteria application as fillers to reinforce calcium chloride cured sodium alginate film was investigated through the determination of the physical, morphological and mechanical properties of composite films. There were six species of bacteria isolated from palm oil mill effluent sample. The bacteria sample selected for filler reinforcement has a sub-micron diameter of 0.83 ± 0.13 µm. The growth curve of selected bacteria revealed that four days of broth culture produced the maximum bacteria mass. The composite films were produced with reinforcement of 0.1 g, 0.2 g, 0.3 g and 0.4 g of bacteria respectively. Overall, the increment of bacteria mass resulted in the production of yellowish composite films with improved morphological, physical and mechanical properties. The results revealed that the composite films reinforced with 0.3 g and 0.4 g of bacteria appeared to have less curling on the surface of the film. The water absorption properties of the films were initially 140.74% and remained constant at an approximate of 200% after the reinforcement. The tensile strength properties showed a total increment of approximately 22.70% (from 36.10 ± 1.94 MPa to 44.29 ± 0.60 MPa). Based on the results, bacteria fillers were not able to enhance the elongation properties because only about 0.6% of overall increment was observed which was considered insignificant. It was concluded that the bacteria biomass has the potential to be used as fillers to reinforce calcium chloride cured sodium alginate film.


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