Optimization of dilute acid and hot water pretreatment of different lignocellulosic biomass: A comparative study

Timung, Robinson; Mohan, Mood; Balaji, Chilukoti; Sasmal, Soumya; Banerjee, Tamal; Goud, Vaibhav V.

doi:10.1016/j.biombioe.2015.05.006

Cited by 101 publications

(45 citation statements)

References 13 publications

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“…The low values of CV% clearly indicated a very high degree of precision and a good reliability of the experimental values [20]. Percentage of lignin reduction resulted in a lower CV value of 1.92%, which showed that the model has high experimental reliability due to closeness of experimental and predicted values [24]. …”

Section: Resultsmentioning

confidence: 99%

Delignification of corncob via combined hydrodynamic cavitation and enzymatic pretreatment: process optimization by response surface methodology

Thangavelu

Desikan

Taran

et al. 2018

Biotechnol Biofuels

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BackgroundRenewable liquid biofuel production will reduce crude oil import of India. To displace the huge quantity of fossil fuels used for energy production, this research was focused on utilization of unexploited low-cost agricultural residues for biofuel production. Corncobs are a byproduct of corn processing industry, and till now it is not utilized for biofuel production, eventhough it has high lignocellulosic concent. In this study, combined hydrodynamic cavitation and enzymatic (HCE) method was evaluated as a pretreatment method of corncob for biofuel production. The most significant process parameters namely (i) enzyme loading (3–10 U g−1), (ii) biomass loading (2.5–5.0%), and (iii) duration (5–60 min) were optimized and their effects on combined HCE pretreatment of corncob was studied through response surface methodology for lignin reduction, hemicellulose reduction and cellulose increase.ResultsThe highest lignin reduction (47.4%) was obtained in orifice plate 1 (OP1) under the optimized conditions namely biomass loading at 5%, enzyme loading at 6.5 U g−1 of biomass, and reaction duration of 60 min. The above tested independent variables had a significant effect on lignin reduction. The cavitational yield and energy consumption under the above-mentioned optimized conditions for OP1 was 3.56 × 10−5 g J−1 and 1.35 MJ kg−1, respectively.ConclusionsIt is evident from the study that HCE is an effective technology and requires less energy (1.35 MJ kg−1) than other biomass pretreatment methods.Electronic supplementary materialThe online version of this article (10.1186/s13068-018-1204-y) contains supplementary material, which is available to authorized users.

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Section: Resultsmentioning

confidence: 99%

Delignification of corncob via combined hydrodynamic cavitation and enzymatic pretreatment: process optimization by response surface methodology

Thangavelu

Desikan

Taran

et al. 2018

Biotechnol Biofuels

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“…The absorbance band at 1731 cm -1 assigned to C=O stretching was most prominent at pH 5.13, while it was diminished at pH 2.08 and 9.27. This revealed that the cleavage of acetyl groups linked to hemicellulose was more effective at pH 2.08 and 9.27 than at pH 5.13 .The peak at 1512 cm -1 relates to the aromatic skeletal vibrations in lignin (Timung et al 2015). The peak at 1460 cm -1 represents the methoxyl group in lignin (Zhang et al 2013b).…”

Section: Ftir and Microstructure Analysis Of Pretreated Corn Stovermentioning

confidence: 96%

Comparative Evaluation of Magnesium Bisulfite Pretreatment under Different pH Values for Enzymatic Hydrolysis of Corn Stover

Ren

Liu

et al. 2016

BioResources

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During pretreatment, the pretreatment pH often plays an important role in removing hemicelluloses and lignin for improving the conversion of biomass to sugars. In this study, corn stover was subjected to magnesium bisulfite pretreatment (MBSP) under various pH conditions. The obtained data showed that the hemicelluloses and lignin were solubilized by MBSP, which led to changes in the structural and chemical properties of the pretreated material. The pretreatment pH could alter the existing forms of SO2, and magnesium bisulfite was the most effective reagent for removing lignin. A relatively neutral MBSP (pH 5.13) not only considerably improved the enzymatic hydrolysis yield (80.18%), but also produced a large amount of high-value xylo-oligosaccharides in the spent liquor. Furthermore, only the hemicellulose removal showed a linear relationship with the enzymatic hydrolysis yield. These results suggest that removal of all the lignin might not be necessary to improve the hydrolysis efficiency.

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“…Perlakuan awal dengan air panas dan asam encer diketahui sebagai teknik terpilih untuk melarutkan hemiselulosa ampas tebu dan bambu sehingga meningkatkan aksesibilitas enzim pada hidrolisis selulosa. Perlakuan awal dengan air panas menunjukkan total gula pereduksi yang dihasilkan lebih besar pada ekstraksi bahan berlignoselulosa ampas tebu dan bambu (Timung et al, 2015). Ekstraksi meng gunakan air sebagai pelarut perlu memperhatikan sifat fisika dan kimia air yang dapat bervariasi pada suhu dan tekanan tertentu.…”

Section: B Analisis Zat Ekstraktif Dalam Sampel Kayuunclassified

“…Kadar abu akan mempengaruhi kadar karbon terikat yang ada di dalam kayu dan dapat mengurangi proporsi fraksi organik di dalam kayu (Pari, Setiawan, & Mahyudin, 1996). Pada proses pembuatan biofuel dari biomassa atau bahan berlignoselulosa, kadar abu penting untuk diperhatikan karena kandungan material anorganik di dalam kayu akan menjadi inhibitor enzim dalam menghidrolisis substrat menjadi glukosa (Timung et al, 2015). Kadar abu yang tinggi juga tidak diinginkan untuk bahan baku serat (pulp).…”

Section: Kadar Air Kadar Abu Dan Kadar Silikaunclassified

Komponen Kimia Dan Potensi Penggunaan Lima Jenis Kayu Kurang Dikenal Asal Jawa Barat

Hastuti¹,

Efiyanti²,

Pari³

et al. 2017

j.penelit.has.kehutan

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ABSTRAKHutan Indonesia memiliki potensi pohon tropis yang sangat beragam. Salah satu komoditi utama yang dihasilkan dari pohon sebagai komponen utama penyusun hutan adalah kayu. Penggunaan kayu umumnya disesuaikan dari sifat kayu, seperti sifat fisik-mekanik, sifat keterawetan dan sifat dasar lainnya. Salah satu sifat kayu yang penting dan menentukan karakteristik penggunaannya antara lain sifat kimia. Penelitian ini menganalisis komponen kimia 5 jenis kayu yang kurang dikenal asal Jawa Barat, yaitu ki bugang, sempur lilin, cangcaratan, ki pasang, dan ki langir. Analisis meliputi komponen kimia kayu sesuai standar Norman Jenkin, Standar Nasional Indonesia (SNI) dan TAPPI. Hasil analisis menunjukkan bahwa ki bugang memiliki kadar selulosa dan pentosane tertinggi, masing-masing sebesar 52,57% dan 21,37%. Kayu cangcaratan memiliki kadar lignin tertinggi yaitu sebesar 31,84%. Ki langir memiliki nilai kelarutan dalam air dingin, kelarutan dalam alkohol-benzena dan kelarutan dalam NaOH tertinggi, masing-masing sebesar 3,34%, 2,75%, dan 22,17%. Kayu Sempur lilin memiliki kelarutan dalam air panas tertinggi sebesar 8,56%. Ki langir juga memiliki kadar abu tertinggi sebesar 3,60% dan kayu sempur lilin memiliki kadar silika tertinggi sebesar 1,92%. Berdasarkan pemetaan potensi penggunaannya, kayu cangcaratan lebih berpotensi sebagai bahan baku pulp dan kayu energi, sedangkan kayu ki bugang lebih berpotensi sebagai bahan baku bioetanol.

show abstract

Optimization of dilute acid and hot water pretreatment of different lignocellulosic biomass: A comparative study

Cited by 101 publications

References 13 publications

Delignification of corncob via combined hydrodynamic cavitation and enzymatic pretreatment: process optimization by response surface methodology

Delignification of corncob via combined hydrodynamic cavitation and enzymatic pretreatment: process optimization by response surface methodology

Comparative Evaluation of Magnesium Bisulfite Pretreatment under Different pH Values for Enzymatic Hydrolysis of Corn Stover

Komponen Kimia Dan Potensi Penggunaan Lima Jenis Kayu Kurang Dikenal Asal Jawa Barat

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