Acidogenesis of gelatin-rich wastewater in an upflow anaerobic reactor: influence of pH and temperature

Yu, Han; Fang, Hhp

doi:10.1016/s0043-1354(02)00256-7

Cited by 162 publications

(111 citation statements)

References 25 publications

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“…Anaerobic degradation of organic compounds can be efficient and stable when there is a balance metabolism rate beetween the acid-forming bacteria and bacteria that form CH4 (Yu and Fang, 2003). Imbalance can occur due to excessive organic loading or changes in operating conditions (Tabatabaei et al, 2011) which would trigger the accumulation of acidic intermediate products that are inhibiting bacteria methanogens (Marchaim, 1991).…”

Section: Introductionmentioning

confidence: 99%

Biogas Production and Removal COD – BOD and TSS from Wastewater Industrial Alcohol (Vinasse) by Modified UASB Bioreactor

Utami

Redjeki

Astuti

2016

MATEC Web of Conferences

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Biogas production and decreased organic loading of vinasse using a modified UASB bioreactor has been done successfully. Vinasse is waste from the ethanol industry which contains COD: 9.360 mg / L , BOD : 4.013 mg/L, and TSS: 317.5 mg/L. The purpose of this research was to study the performance of bioreactors Upflow Anaerobic Sludge Blanket (UASB) to decompose the vinasse into biogas or methane. UASB operating principle is to distribute wastewater in the bioreactor to flow upward through the sludge blanket by setting the hidrolic retention time (HRT). Four UASB bioreactor columns were used in this experiment wherein each with a capacity of 50 L in volume; 23 cm inside diameter, and 120 cm. The variations of hydraulic capacity followed the variations of HRT in the range of 72-36 hours. Modifications were carried out on the top of column UASB with the aim of preventing gas losses and increasing the flowrate of gas out from the top of the column. The results showed that HRT increased from 36 h to 72 h followed by an increase in COD removal efficiency of 55.64% to 66.81%; BOD5 from 67.85% to 74.58%; and TSS from 66.69% to 84.19%. The maximum volume of biogas produced was in the range of 5.826 L / day (42.89% methane) to 7.930 L / day (methane 58.06%).

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Section: Introductionmentioning

confidence: 99%

Biogas Production and Removal COD – BOD and TSS from Wastewater Industrial Alcohol (Vinasse) by Modified UASB Bioreactor

Utami

Redjeki

Astuti

2016

MATEC Web of Conferences

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“…Secara umum, pH medium tidak hanya mempengaruhi pertumbuhan dan laju fermentasi tetapi juga mempengaruhi yield produk (Zhu dan Yang, 2004 Yu dan Fang, 2003;Ren dkk., 1997), rentang pH 5-5,5 (Ren dkk., 2007;Ren dkk., 2006;Han dkk., 2003) dan pada rentang pH 6-8 (Lu dkk, 2008;Temudo dkk, 2007;Fang dan Liu, 2002 …”

Section: Pendahuluanunclassified

“…Pada R2, pembentukan asetat terhambat dengan produksi tertinggi pada jam ke-72 sebesar 88,09 mg/L, pH 5,17 dan laju pembentukan 1,16 mg/L/jam. Pengaturan pH ke dalam rentang 6-6,5 pada penelitian ini dapat meningkatkan produksi asetat dan masuk dalam rentang pH optimal pembentukan asam asetat dari substrat glukosa (Fang dan Liu, 2002;Temudo dkk., 2007;Ren dkk., 2007;Syafila, 1993) dan gelatin (Yu dan Fang, 2003).…”

Section: Pengaruh Pengendalian Ph Terhadap Distribusi Pembentukan Prounclassified

“…Penurunan pH di awal fermentasi asidogenesa menyebabkan pembentukan asam propionat dalam jumlah yang besar dan optimal terbentuk pada pH 4-5,5 (Wang dkk., 2006a;Wang dkk., 2006b;Yu dan Fang, 2003). Namun pada penelitian ini, pengaturan pH dalam rentang 6-6,5 menghasilkan propionat lebih besar dari pada reaktor tanpa pengendalian pH.…”

Section: Pengaruh Pengendalian Ph Terhadap Distribusi Pembentukan Prounclassified

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PENGARUH PENGENDALIAN pH TERHADAP PEMBENTUKAN ETANOL DAN PERGESERAN PRODUK ASIDOGENESA DARI FERMENTASI LIMBAH CAIR INDUSTRI MINYAK SAWIT (The Influence of pH Control on Ethanol and Switch of Acidogenic Products Formation from Palm Oil Mill Effluent)

et al. 2015

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AbstrakLimbah cair industri minyak sawit memiliki potensi sebagai substrat pembentukan etanol. Pemanfaatan kultur campuran dalam pembentukan etanol memiliki keuntungan karena tidak memerlukan sterilisasi substrat, namun akan dihasilkan berbagai produk samping dan sebaliknya pada Saccharomyces cerevisiae. Penelitian ini bertujuan untuk mempelajari pengaruh pengaturan pH terhadap pembentukan etanol dan produk asidogenesa. Rancangan penelitian terdiri dari reaktor bakteri anaerob dan ragi dengan perlakuan pengendalian pH pada rentang 6-6,5 dan tanpa pengendalian pH dengan pH awal fermentasi 6-6,5. Hasil penelitian menunjukkan Degree Acidification (DA), Total Asam Volatil (TAV) dan etanol tertinggi berurutan sebesar 0,32; 808,03 mg/L dan 24,03 mg/L pada reaktor bakteri dengan pengendalian pH; 0,23; 522,43 mg/L dan 23,12 mg/L pada reaktor tanpa pengendalian pH; 0,25; 775,78 mg/L dan 34,11 mg/L pada reaktor ragi dengan pengendalian pH dan 0,32; 866,71 mg/L dan 29,17 mg/L pada reaktor ragi tanpa pengendalian pH. Pengendalian pH fermentasi meningkatkan pembentukan produk asetil-KoA dari 4,35% menjadi 7,34% pada reaktor bakteri dan dari 17,92% menjadi 18,78% pada reaktor ragi dan tidak berpengaruh terhadap pembentukan etanol.

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“…Valentini and Borja et al argued that Monod equation is suitable for describing the hydrolysis of soluble organics but not for insoluble organics [13,14], and Contois model could not explain the effect of temperature on hydrolysis rate [15][16][17]. Particulate breakup model suggested that the particulates should be broken into smaller ones due to the hydrolysis, leading to the increasing specific surface area of particulates [18].…”

mentioning

confidence: 99%

The Research of Corrected First Order Kinetics on Hydrolysis and Biogas Generation in Batch Anaerobic Digestion

Feng¹,

Kou²,

Li³

2015

JRST

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ABSTRACT:Research on sequencing batch anaerobic digestion was performed for kitchen waste and its components at 37°C. Biogas production models of flat, cylindrical spherical particulates were proposed and analyzed for single component. It is shown that the hydrolysis of starches, celluloses, fats and proteins prefers to follow the model of cylindrical, spherical and flat particulates, respectively. Moreover, biogas production models of flat, cylindrical, spherical, and mixed particulates were proposed and analyzed for multi-component (kitchen waste). Biogas production models of flat and mixed particulates most closely match the actual situation before and after the 24th day, respectively.

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Acidogenesis of gelatin-rich wastewater in an upflow anaerobic reactor: influence of pH and temperature

Cited by 162 publications

References 25 publications

Biogas Production and Removal COD – BOD and TSS from Wastewater Industrial Alcohol (Vinasse) by Modified UASB Bioreactor

Biogas Production and Removal COD – BOD and TSS from Wastewater Industrial Alcohol (Vinasse) by Modified UASB Bioreactor

PENGARUH PENGENDALIAN pH TERHADAP PEMBENTUKAN ETANOL DAN PERGESERAN PRODUK ASIDOGENESA DARI FERMENTASI LIMBAH CAIR INDUSTRI MINYAK SAWIT (The Influence of pH Control on Ethanol and Switch of Acidogenic Products Formation from Palm Oil Mill Effluent)

The Research of Corrected First Order Kinetics on Hydrolysis and Biogas Generation in Batch Anaerobic Digestion

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