Biological treatment of wastewater discharged from biodiesel fuel production plant with alkali-catalyzed transesterification

Suehara, Ken‐ichiro; Kawamoto, Yoshihiro; Fujii, Eiko; Kohda, Jiro; Nakano, Yasuhisa; Yano, Takuo

doi:10.1263/jbb.100.437

Cited by 120 publications

(87 citation statements)

References 10 publications

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“…Pretreatment is necessary to reduce soap formation during the reaction and ease the extensive handling for separation of biodiesel and glycerol together with removal of catalyst and alkaline wastewater (Meher et al, 2006;Mittelbach, 1990). The amount of wastewater from a traditional biodiesel plant is around 0.2 ton per ton biodiesel produced (Suehara et al, 2005). Therefore the wastewater treatment and eventual need for water reuse is a severe problem both from an energy consuming and environmental point of view.…”

Section: Introductionmentioning

confidence: 99%

A review of the current state of biodiesel production using enzymatic transesterification

Fjerbæk

Christensen

Norddahl

2009

Biotech & Bioengineering

667

459

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Enzymatic biodiesel production has been investigated intensively, but is presently employed industrially only in a 20,000 tons/year pilot plant in China (Du et al. [2008] Appl Microbiol Technol 79(3):331-337). This review presents a critical analysis of the current status of research in this area and accentuates the main obstacles to the widespread use of enzymes for commercial biodiesel transesterification. Improved results for enzymatic catalysis are seen with respect to increased yield, reaction time and stability, but the performance and price of the enzymes need further advances for them to become attractive industrially for biodiesel production. Critical aspects such as mass transfer limitations, use of solvents and water activity are discussed together with process considerations and evaluation of possible reactor configurations, if industrial production with enzymes is to be carried out. Results of published studies on the productivity of enzymes are also presented and compared to the use of chemical catalysts.

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Section: Introductionmentioning

confidence: 99%

A review of the current state of biodiesel production using enzymatic transesterification

Fjerbæk

Christensen

Norddahl

2009

Biotech & Bioengineering

667

459

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“…With the likely expansion of biodiesel production by plants using the conventional method (alkali-catalyzed transesterification), at least in the near future, is the inherent need to treat the wastewater. In the conventional process, for every 100 L biodiesel produced, some 20 L of raw biodiesel wastewater is discharged (Suehara et al 2005). It was reported that the capacity of biodiesel production was approximately 1.5 mL/ day with 43 biodiesel plants registered with the Department of Industrial Work (Department of Alternative Energy Development and Efficiency) (Chavalparit et al 2009).…”

Section: Introductionmentioning

confidence: 99%

“…It is also found that if factories discharge wastewater exceeding the BOD limit (500 mg/L), then they have to pay around 128.45-160 USD/ m 3 (Ngamlerdpokin et al 2011). Several processes have been developed to find out the suitable treatment procedure for managing biodiesel wastewater for both environmental and economic reasons, such as the use of microbiological process (Suehara et al 2005;Kato et al 2005) and anaerobic digestion (Nishiro et al 2007). Although these processes are the most efficient and economic way to reduce the environmental impacts of biodiesel wastewater, they also generate large amounts of low-density sludge with low decomposition efficiency (Suehara et al 2005).…”

Section: Introductionmentioning

confidence: 99%

“…Several processes have been developed to find out the suitable treatment procedure for managing biodiesel wastewater for both environmental and economic reasons, such as the use of microbiological process (Suehara et al 2005;Kato et al 2005) and anaerobic digestion (Nishiro et al 2007). Although these processes are the most efficient and economic way to reduce the environmental impacts of biodiesel wastewater, they also generate large amounts of low-density sludge with low decomposition efficiency (Suehara et al 2005). Chemical coagulation and electrocoagulation processes are also proposed for the treatment of wastewater from biodiesel plants (Chavalparit et al 2009).…”

Section: Introductionmentioning

confidence: 99%

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Treatment of wastewater from biodiesel plants using microbiological reactor technology

Khan

Yamsaengsung

Chetpattananondh

et al. 2014

Int. J. Environ. Sci. Technol.

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The objective of this paper was to introduce the aerobic microbiological reactor technology for wastewater treatment of biodiesel plants and find out the key factors that are involved in membrane fouling. The research was carried out in two steps. In the first step, sulfuric acid of pH 2, 2.5 and 3 was added to biodiesel wastewater and significant reduction in organic pollutants was observed at pH 2.5 such as chemical oxygen demand, and oil and grease were found to be 74-84 and 84.2-92.6 %, respectively. In the second step, microbiological reactor was operated at different hydraulic retention times of 15, 12, 9 and 6 h along with an increase in organic loading rates (range 1-3 g/L day) on individual hydraulic retention times. However, overall chemical oxygen demand and oil and grease removal efficiency remained in the range of 91.7-97.20 and 95.5-97.9 %, respectively, throughout the experiment, while severe membrane fouling was observed with decreasing hydraulic retention time due to decrease in dissolved oxygen concentration and increase in mixed liquid suspended solids, and soluble microbial product containing protein and polysaccharide. At lower hydraulic retention time of 6 h, an increase in particle size was reported as 27.9-62.7 lm, and soluble microbial product containing protein and polysaccharide reported as 20-60 and 19-59 mg/L, respectively. Higher soluble microbial product level led to increase in particle size with irregular shape, which led to severe membrane fouling.

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“…A adição da argila mineral bentonita (ANGELIDAKI et al, 1990), sais de cálcio (ANGELIDAKI et al, 1990;ROY et al, 1985), com exceção do carbonato de cálcio, devido sua elevada insolubilidade em água (HANAKI et al, 1981), e de magnésio (GALBRAITH et al, 1971) (1997), Omil et al (1996), Guerrero et al (1996), Omil et al (1995), Soto et al (1991) e Doudoroff (1940. A diluição do glicerol residual pode ser uma solução para a inibição microbiana pela elevada salinidade (SUEHARA et al, 2005), embora em escala industrial o uso de água bruta para este fim poderia encarecer o processo. Uma alternativa poderia ser a mistura com outras correntes de efluentes, como a proveniente de processos de lavagem ou esgoto sanitário, o que também pode ser uma fonte de macro e micronutrientes (FORESTI et al, 2006;.…”

Section: Teste De Toxicidade E Biodegradabilidade Anaeróbiaunclassified

Produção de biogás a partir de glicerol oriundo de biodiesel

Viana¹

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Biological treatment of wastewater discharged from biodiesel fuel production plant with alkali-catalyzed transesterification

Cited by 120 publications

References 10 publications

A review of the current state of biodiesel production using enzymatic transesterification

A review of the current state of biodiesel production using enzymatic transesterification

Treatment of wastewater from biodiesel plants using microbiological reactor technology

Produção de biogás a partir de glicerol oriundo de biodiesel

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