Effect of composting pretreatment time of corn stalks and sewage sludge and gasification temperature on gasification

WANG Caiyu; MENG Shuyan; GUO Xiang; ZHANG Yingxiu; SONG Yingjin; CHEN Guanyi

doi:10.13205/j.hjgc.202610018

Volume 44 Issue 10

Oct. 2026

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2026 > 44(10): 181-188

WANG Caiyu, MENG Shuyan, GUO Xiang, ZHANG Yingxiu, SONG Yingjin, CHEN Guanyi. Effect of composting pretreatment time of corn stalks and sewage sludge and gasification temperature on gasification[J]. ENVIRONMENTAL ENGINEERING , 2026, 44(10): 181-188. doi: 10.13205/j.hjgc.202610018

Citation:

WANG Caiyu, MENG Shuyan, GUO Xiang, ZHANG Yingxiu, SONG Yingjin, CHEN Guanyi. Effect of composting pretreatment time of corn stalks and sewage sludge and gasification temperature on gasification[J]. ENVIRONMENTAL ENGINEERING , 2026, 44(10): 181-188. doi: 10.13205/j.hjgc.202610018

Citation:

WANG Caiyu, MENG Shuyan, GUO Xiang, ZHANG Yingxiu, SONG Yingjin, CHEN Guanyi. Effect of composting pretreatment time of corn stalks and sewage sludge and gasification temperature on gasification[J]. ENVIRONMENTAL ENGINEERING , 2026, 44(10): 181-188. doi: 10.13205/j.hjgc.202610018

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Effect of composting pretreatment time of corn stalks and sewage sludge and gasification temperature on gasification

doi: 10.13205/j.hjgc.202610018

1. College of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China;
2. Tianjin University of Commerce, Tianjin 300134, China

Received Date: 2025-06-28
Available Online: 2026-11-10

Abstract

Abstract

Improving gas products' quality is the bottleneck of the pyrolytic gasification of organic solid waste. In this study， an experimental method of composting pretreatment was proposed to increase hydrogen production and lower heating value （LHV） of the syngas. Firstly， the physical properties and chemical structures of corn stalks （CS）， sewage sludge （SS）， and their mixtures under different composting times （C0： 0 d， C1： 7 d， C2： 14 d， C3： 21 d， C4： 28 d， and C5： 35 d） were analyzed. Then， the hydrogen production and LHV of CS， SS， and their mixtures at different gasification temperatures （800， 900， and 1000 ℃） were measured. The characterization and physical property analysis of the compost showed that the lignin content of composted （C1 to C5） was higher than that of non-composted （C0）. At a gasification temperature of 900 ℃， compared with CS and C0， the H₂ concentration in C1 （9.66%， volume ratio） increased by 2.14 and 4.53 percentage points， and the LHV of C1 （6.17 MJ/Nm³） increased by 0.60 MJ/Nm³ and 1.37 MJ/Nm³， respectively； there was no significant difference among treatment group C1 to C5. The gasification effect at 900 ℃ was better than that at 800 ℃ and 1000 ℃. This study proved that composting pretreatment effectively promoted the gasification of CS and SS， which provided a theoretical and practical reference for future applications.
- compost,
- corn stalks,
- sewage sludge,
- gasification,
- low heating value

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References(35)

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