Photocatalytic restoration of liquid effluent from oil palm agroindustry in Malaysia using tungsten oxides catalyst

Cheng, Yoke Wang; Chang, Ying Shi; Ng, Kim Hoong; Wu, Ta Yeong; Cheng, Chin Kui

doi:10.1016/j.jclepro.2017.06.023

Cited by 49 publications

(19 citation statements)

References 30 publications

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Section: Photocatalytic Activity Of Green-synthesized Cuo Nps On Pomementioning

confidence: 85%

“…In the end, the possible products of the photocatalytic degradation process could be water, carbon dioxide, methane gas, and other simple molecules (Equation ( 8)) [52]. A similar mechanism has been proposed for the photocatalytic degradation of organic pollutants in aqueous media using CuO nanomaterials [53,54] As the photo-treated POME was going to be discharged into water resources at the end, hence, phytotoxicity test using mung bean seed was performed as shown in Figure 10 to evaluate the impact on the aquatic ecosystem. Compared with tap water (control), the untreated POME solution strongly inhibited the germination of mung bean seed, where the initial was phytotoxicity 45.5%.…”

Section: Photocatalytic Activity Of Green-synthesized Cuo Nps On Pomementioning

confidence: 88%

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Green Synthesis and Characterization of CuO Nanoparticles Derived from Papaya Peel Extract for the Photocatalytic Degradation of Palm Oil Mill Effluent (POME)

et al. 2021

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In recent years, the green chemistry based-approach for the synthesis of nanoparticles has shown tremendous promise as an alternative to the costly and environmentally unfriendly chemically synthesized nanoparticles. In this study, copper oxide nanoparticles (CuO NPs) were synthesized through a green approach using the water extract of papaya (Carica papaya L.) peel biowaste as reducing as well as stabilizing agents, and copper (II) nitrate trihydrate salt as a precursor. The structural properties, crystallinity, purity, morphology, and the chemical composition of as-synthesized CuO NPs were analyzed using different analytical methods. The analytical results revealed that the synthesized CuO was observed as spherical-like in particles with measured sizes ranging from 85–140 nm and has monoclinic crystalline phase with good purity. The Fourier transform infrared (FTIR) spectroscopic results confirmed the formation of the Cu-O bond through the involvement of the potential functional groups of biomolecules in papaya peel extract. Regarding photocatalytic activity, the green-synthesized CuO NPs were employed as a photocatalyst for the degradation of palm oil mill effluent (POME) beneath the ultraviolet (UV) light and results showed 66% degradation of the POME was achieved after 3 h exposure to UV irradiation. The phytotoxicity experiment using mung bean (Vigna radiata L.) seed also showed a reduction of toxicity after photodegradation.

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Section: Photocatalytic Activity Of Green-synthesized Cuo Nps On Pomementioning

confidence: 85%

Section: Photocatalytic Activity Of Green-synthesized Cuo Nps On Pomementioning

confidence: 88%

Green Synthesis and Characterization of CuO Nanoparticles Derived from Papaya Peel Extract for the Photocatalytic Degradation of Palm Oil Mill Effluent (POME)

et al. 2021

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“…However, the colour reduction only increased slightly when the catalyst loading increased from 5 wt% to 10 wt%, probably due to the agglomeration of nanoparticles in the POME suspension and the excessive photocatalyst used causing penetration of UVirradiation difficult and consequently slowed down the photodegradation (Tan et al, 2014). Similar method was reported by Cheng et al (2017), who used tungsten oxides photocatalyst under UV-irradiation to remove colour from POME. It was found that the maximum percentage of POME colour removal was 98.28% at optimum reaction time of 16 hr.…”

Section: Othersmentioning

confidence: 69%

Decolourisation of Palm Oil Mill Effluent (Pome) Treatment Technologies: A Review

SYAHIN¹

2020

JOPR

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Since last decade, global demand for edible oil is growing resulting in a remarkable increase in the areas under oil crop cultivation. The Malaysian palm oil industry is one of the largest palm oil producers in the world. In processing palm oil, high volume of liquid waste known as palm oil mill effluent (POME) is generated. The increasing demands of crude palm oil has resulted in the enormous increase of the number of palm oil mills in Malaysia contributing to large amount of POME. Currently, treatment technologies of POME gain a lot of attention in order to meet the standard discharge limits. The colour of POME, which previously was not an issue, is recently being highlighted and it will be incorporated in the regulation soon.Thus, this article provides review on colourants in POME and its possible decolourisation treatments. The possible decolourisation technologies that will be highlighted in this article are adsorption, coagulation and flocculation, membrane technology, microbial treatment, photocatalysis, etc. including their potential in POME colour removal efficiency.

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“…Besides, pure WO 3 has a small surface area, and the high level of electron–hole recombination makes WO 3 photoactivity low [ 101 , 105 ]. Cheng et al [ 106 ] evaluate the photocatalytic treatment of POME waste over tungsten oxide photocatalyst (WO 3 ) with UV irradiation. At optimal catalyst loading (0.5 g/L) produced the highest photocatalytic degradation (51.15%) and decolorization (96.21%) within 1 h of treatment.…”

Section: Photocatalytic Technology For Pome Treatmentmentioning

confidence: 99%

Photocatalytic Technology for Palm Oil Mill Effluent (POME) Wastewater Treatment: Current Progress and Future Perspective

et al. 2021

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The palm oil industry produces liquid waste called POME (palm oil mill effluent). POME is stated as one of the wastes that are difficult to handle because of its large production and ineffective treatment. It will disturb the ecosystem with a high organic matter content if the waste is disposed directly into the environment. The authorities have established policies and regulations in the POME waste quality standard before being discharged into the environment. However, at this time, there are still many factories in Indonesia that have not been able to meet the standard of POME waste disposal with the existing treatment technology. Currently, the POME treatment system is still using a conventional system known as an open pond system. Although this process can reduce pollutants’ concentration, it will produce much sludge, requiring a large pond area and a long processing time. To overcome the inability of the conventional system to process POME is believed to be a challenge. Extensive effort is being invested in developing alternative technologies for the POME waste treatment to reduce POME waste safely. Several technologies have been studied, such as anaerobic processes, membrane technology, advanced oxidation processes (AOPs), membrane technology, adsorption, steam reforming, and coagulation. Among other things, an AOP, namely photocatalytic technology, has the potential to treat POME waste. This paper provides information on the feasibility of photocatalytic technology for treating POME waste. Although there are some challenges in this technology’s large-scale application, this paper proposes several strategies and directions to overcome these challenges.

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Photocatalytic restoration of liquid effluent from oil palm agroindustry in Malaysia using tungsten oxides catalyst

Cited by 49 publications

References 30 publications

Green Synthesis and Characterization of CuO Nanoparticles Derived from Papaya Peel Extract for the Photocatalytic Degradation of Palm Oil Mill Effluent (POME)

Green Synthesis and Characterization of CuO Nanoparticles Derived from Papaya Peel Extract for the Photocatalytic Degradation of Palm Oil Mill Effluent (POME)

Decolourisation of Palm Oil Mill Effluent (Pome) Treatment Technologies: A Review

Photocatalytic Technology for Palm Oil Mill Effluent (POME) Wastewater Treatment: Current Progress and Future Perspective

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