Abstract:Nigeria has joined the league of countries seeking for alternatives to fossil fuels. Biofuel has emerged as a credible alternative and blend stock for the dwindling petroleum resources. Nigeria is committed to blending biodiesel with petrodiesel up to 20%. This paper evaluates the challenge of biodiesel production from oil palm feedstock in Nigeria. The study found that biodiesel production in Nigeria could be challenged by feedstock supply shortages, poor quality of the feedstock, technological challenges and… Show more
“…Biological treatment of POME to reduce the wastewater strength is one potential method that can be adopted to alleviate the pollution problem faced by the palm oil industry. Many researchers have reported the use of various micro-organisms to treat food processing wastewater and POME [12] such as lipolytic bacteria and fungi [13]. Anaerobic digestion and pond systems are efficient in reducing organic matter and solid floatation on the surface of ponding system especially in the first and second ponds is observed in all palm oil mills.…”
Palm oil mill effluent (POME) had acidic pH (pH 4.5) and high C/N ratio that was suitable for fungal treatment. Treatment of POME (15 − 51 g/L) by Humicola insolens D2, Thermomyces lanuginosus E4, and Rhizopus oryzae ST29 for 5 days indicated the optimum concentration of 22.5 g/L soluble COD. R. oryzae ST 29 was most efficient in removal of COD (60.0%), oil & grease (98.6%), and total solids (52.9%). The strain grew well (16.9 g-biomass/L) and also produced the highest biopolymer (26.9 mg/g biomass) with the simultaneous removal of solids from POME. The maximum treatment efficiency and enzyme production (814 U/mL CMCase and 1,550 U/mL xylanase) were achieved after 4 days cultivation. R. oryzae ST 29 was selected for optimization studies which revealed the supplementation of 0.025% fertilizer (46% urea) and the initial pH of 4.5. Under the optimum condition, the treatment increased to 80% COD removal with simultaneous increase of biopolymer by about 2 folds (52.2 mg/g biomass). Therefore, bioaugmentation of R. oryzae ST 29 in POME not only enhanced the treatment efficiency but also generated biomass, enzymes, and biopolymer (MW 17,700 Daltons) as bioproducts.
“…Biological treatment of POME to reduce the wastewater strength is one potential method that can be adopted to alleviate the pollution problem faced by the palm oil industry. Many researchers have reported the use of various micro-organisms to treat food processing wastewater and POME [12] such as lipolytic bacteria and fungi [13]. Anaerobic digestion and pond systems are efficient in reducing organic matter and solid floatation on the surface of ponding system especially in the first and second ponds is observed in all palm oil mills.…”
Palm oil mill effluent (POME) had acidic pH (pH 4.5) and high C/N ratio that was suitable for fungal treatment. Treatment of POME (15 − 51 g/L) by Humicola insolens D2, Thermomyces lanuginosus E4, and Rhizopus oryzae ST29 for 5 days indicated the optimum concentration of 22.5 g/L soluble COD. R. oryzae ST 29 was most efficient in removal of COD (60.0%), oil & grease (98.6%), and total solids (52.9%). The strain grew well (16.9 g-biomass/L) and also produced the highest biopolymer (26.9 mg/g biomass) with the simultaneous removal of solids from POME. The maximum treatment efficiency and enzyme production (814 U/mL CMCase and 1,550 U/mL xylanase) were achieved after 4 days cultivation. R. oryzae ST 29 was selected for optimization studies which revealed the supplementation of 0.025% fertilizer (46% urea) and the initial pH of 4.5. Under the optimum condition, the treatment increased to 80% COD removal with simultaneous increase of biopolymer by about 2 folds (52.2 mg/g biomass). Therefore, bioaugmentation of R. oryzae ST 29 in POME not only enhanced the treatment efficiency but also generated biomass, enzymes, and biopolymer (MW 17,700 Daltons) as bioproducts.
“…Some of the non -edible seed oils that are yet to be reported are Therelia peruviara, Afcola mellanii, Chrisophylum albidum and Spondia mombis, Crotalaria spectabilis, cynanchum leave (honeyvine), Fatoua villosa, Fumaria officinalis, Phoradendron serotinum, and Senecio glabellus (Sylvester et al, 2013). Many of these seeds are wastes in the environment and are rich source of oils (Table 4).…”
Section: Biodiesel Feedstockmentioning
confidence: 99%
“…Biofuels have become one of the major solutions to issues of sustainable development, energy security and a reduction of greenhouse gas emissions (Sylvester et al, 2013). Biodiesel, an environmental friendly diesel fuel similar to petro-diesel in combustion properties, has received considerable attention in the recent past worldwide.…”
The focus of this review is on the use of non-conventional heterogeneous catalysts for biodiesel synthesis. The review is based on published works that have utilized these non-conventional catalysts for biodiesel synthesis with very good biodiesel yield. The non-conventional catalysts under consideration in this review are those obtained majorly from egg shells. These materials are generally waste materials which several publications had reported to contain high content of calcium oxide. Utilization of these waste materials as catalysts reduces catalyst cost, promotes environmentally benign process and serves as source of income if biodiesel is to be commercialized. Results reported 80 to 90% yield of biodiesel using some of these non-conventional catalysts.
“…These growths will affect the stability of ecosystems and global climate as well as global oil reserves (Balat, 2009). The biofuels of recent days can resolve the issues of sustainable development, energy security and reduction of green house gas emissions (Sylvester et al, 2013). As an alternative to petroleum based transportation fuels, biodiesel is a suitable renewable substitute for petroleum based diesel.…”
Neem oil was extracted from neem seeds by mechanical extraction method. Yield of oil was 21.32%. The physicochemical properties of the extracted oil were studied in detail. The oil corresponds to diesel except acid value (14.21%) and sulphur content. Acid esterification was performed to reduce the acid value which was followed by transesterification to produce biodiesel. The conditions of the transesterification of the oil were optimized and were found to be 20% methanol and 1.0% NaOH at 60 ̊ C for 90 min. The optimum yield of biodiesel was 98 %. Finally, the performance study in a diesel engine was conducted with diesel and biodiesel blends. The brake thermal efficiency for 5% blend of biodiesel was 16.67% for brake power of 0.79 KW.Bangladesh J. Sci. Ind. Res.53(3), 211-218, 2018
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