Metabolism and kinetic study of bioH2 production by anaerobic sludge under different acid pretreatments

被引：12

作者：

Amin, Mohammad Mehdi ^{[1
,2
]}

Bina, Bijan ^{[1
,2
]}

Taheri, Ensiyeh ^{[1
,3
]}

Zare, Mohammad Reza

Ghasemian, Mohammad ^{[1
,2
,4
]}

Van Ginkel, Steven W. ^{[5
]}

Fatehizadeh, Ali ^{[1
,2
]}

机构：

[1] Isfahan Univ Med Sci, Sch Hlth, Dept Environm Hlth Engn, Esfahan, Iran

[2] Isfahan Univ Med Sci, Res Inst Primordial Prevent Noncommunicable Dis, Environm Res Ctr, Esfahan, Iran

[3] Isfahan Univ Med Sci, Student Res Comm, Esfahan, Iran

[4] Larestan Univ Med Sci, Evaz Sch Hlth, Larestan, Iran

[5] Georgia Inst Technol, Sch Civil & Environm Engn, 200 Boddy Dodd Way, Atlanta, GA 30332 USA

来源：

PROCESS BIOCHEMISTRY | 2017年 / 61卷

关键词：

Acid pretreatment; Electron equivalence; Gompertz model; Thermodynamic analysis; FERMENTATIVE HYDROGEN-PRODUCTION; ENHANCE BIOHYDROGEN PRODUCTION; MIXED MICROFLORA; H-2; PRODUCTION; WASTE-WATER; BACTERIA; SUBSTRATE; CULTURES; REMOVAL; GLUCOSE;

D O I：

10.1016/j.procbio.2017.06.015

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

This study presents results pertaining to bioH(2) production carried out in batch experiments under different inorganic acid pretreatments of sludge. The sludge was collected from an anaerobic digester and was subjected to different acid (H2SO4, H3PO4, HNO3, and HCl) pretreatments at pH 3 for 24 h. The results showed that electron equivalent balance closure was within -12 to +10% for all experiments; the portion of electrons as bioH(2) fluctuated from 16% to 25%. H2SO4 pretreatments significantly increased H-2 yields to 3.3 mol H-2/mol glucose followed by HNO3, HCl, and H3PO4 pretreatments which averaged 2.5 +/- 0.5. Enthalpy (Delta H degrees) and Gibb's free energies (Delta G degrees) fluctuated from 120.5 to 192.7 (kJ/mol) and from -2.2 to -5.9 (kJ/mol). The modified Gompertz was assessed and determined that the maximum bioH(2) production potential, 1551 mL and maximum rate of bioH(2) production, 303 mL/h occurred using the H2SO4 pretreatment.

引用

页码：24 / 29

页数：6

共 35 条

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