Next Article in Journal
Asymmetrical Fault Correction for the Sensitive Loads Using a Current Regulated Voltage Source Inverter
Next Article in Special Issue
Catalytic Intermediate Pyrolysis of Napier Grass in a Fixed Bed Reactor with ZSM-5, HZSM-5 and Zinc-Exchanged Zeolite-A as the Catalyst
Previous Article in Journal
Improving the Eco-Efficiency of High Performance Computing Clusters Using EECluster
Previous Article in Special Issue
Computational Fluid Dynamic Analysis of Co-Firing of Palm Kernel Shell and Coal
Article Menu
Issue 3 (March) cover image

Export Article

Open AccessArticle
Energies 2016, 9(3), 198; doi:10.3390/en9030198

Comparing the Bio-Hydrogen Production Potential of Pretreated Rice Straw Co-Digested with Seeded Sludge Using an Anaerobic Bioreactor under Mesophilic Thermophilic Conditions

1
College of Engineering, Nanjing Agricultural University, Nanjing 210031, China
2
Department of Structures and Environmental Engineering, University of Agriculture, Faisalabad 38000, Pakistan
3
Veterinary Research Institute, Lahore Cantt 54810, Pakistan
4
Khairpur College of Engineering and Technology Sindh Agriculture University, Khairpur Mir 66020, Pakistan
5
Department of Soil Science, Bahauddin Zakariya, University, Multan 60800, Pakistan
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Academic Editor: Tariq Al-Shemmeri
Received: 19 January 2016 / Revised: 6 March 2016 / Accepted: 8 March 2016 / Published: 15 March 2016
(This article belongs to the Special Issue Advances in Biomass for Energy Technology)
View Full-Text   |   Download PDF [3293 KB, uploaded 15 March 2016]   |  

Abstract

Three common pretreatments (mechanical, steam explosion and chemical) used to enhance the biodegradability of rice straw were compared on the basis of bio-hydrogen production potential while co-digesting rice straw with sludge under mesophilic (37 °C) and thermophilic (55 °C) temperatures. The results showed that the solid state NaOH pretreatment returned the highest experimental reduction of LCH (lignin, cellulose and hemi-cellulose) content and bio-hydrogen production from rice straw. The increase in incubation temperature from 37 °C to 55 °C increased the bio-hydrogen yield, and the highest experimental yield of 60.6 mL/g VSremoved was obtained under chemical pretreatment at 55 °C. The time required for maximum bio-hydrogen production was found on the basis of kinetic parameters as 36 h–47 h of incubation, which can be used as a hydraulic retention time for continuous bio-hydrogen production from rice straw. The optimum pH range of bio-hydrogen production was observed to be 6.7 ± 0.1–5.8 ± 0.1 and 7.1 ± 0.1–5.8 ± 0.1 under mesophilic and thermophilic conditions, respectively. The increase in temperature was found useful for controlling the volatile fatty acids (VFA) under mechanical and steam explosion pretreatments. The comparison of pretreatment methods under the same set of experimental conditions in the present study provided a baseline for future research in order to select an appropriate pretreatment method. View Full-Text
Keywords: bio-hydrogen production; pretreatments; kinetic parameters; volatile fatty acids; response surface methodology bio-hydrogen production; pretreatments; kinetic parameters; volatile fatty acids; response surface methodology
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Supplementary materials

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Sattar, A.; Arslan, C.; Ji, C.; Sattar, S.; Ali Mari, I.; Rashid, H.; Ilyas, F. Comparing the Bio-Hydrogen Production Potential of Pretreated Rice Straw Co-Digested with Seeded Sludge Using an Anaerobic Bioreactor under Mesophilic Thermophilic Conditions. Energies 2016, 9, 198.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top