Improving the methane production from zucchini stem by response surface methodology and different pretreatments

Gu, Yiqin; Cai, Fanfan; Zhu, Zhe; Dai, Zhuangqiang; Chen, Chang; Liu, Guangqing

doi:10.1016/j.indcrop.2020.112402

Cited by 13 publications

(2 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, as a lignocellulosic substrate mainly consisting of cellulose, hemicellulose and lignin, ES also faces challenges in methane production. The protective barrier of lignin for the lignocellulose restricts hydrolysis rate of cellulose and hemicellulose, thus limiting the AD efficiency of vegetable straw biomass (Monlau et al 2013;Phitsuwan et al 2013;Gu et al 2020;Song et al 2021). In recent years, pretreatment (including chemical, physical and biological methods) has achieved increasing great attention in AD process because it can break down complex and compact structure of lignocellulose and increase the methane production potential of lignocellulosic biomass (Paudel et al 2017;Wang et al 2021).…”

Section: Introductionmentioning

confidence: 99%

Influences of Organic Loading, Feed-To-Inoculum Ratio, And Different Pretreatment Strategies On The Methane Production Performance of Eggplant Stalk

Zhu¹,

Zhang²,

Song³

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

A large amount of eggplant straw (ES) is incinerated after harvesting of eggplant every year, which aggravates environmental pollution and waste of resources. Converting ES into methane through anaerobic digestion (AD) technology may be a potential treatment method, considering the low environmental impact and high energy recovery. Firstly, this study explored the effects of organic loading (OL) and feed to inoculum ratio (F/I ratio) on the AD of ES by response surface methodology (RSM). In order to achieve higher AD efficiency, various pretreatments (acid, alkali, alkaline hydrogen peroxide (AHP), microwave and ultrasound) were introduced and comprehensively assessed with regard to methane production performance, organic matter destruction and kinetic parameters. Results showed that OL had a more significant impact on AD process compared to F/I ratio and methane production was enhanced remarkably when the OL and F/I ratio were 35.0 g VS/L and 3.0, respectively. XRD, FTIR, and SEM analyses of pretreated ES showed that alkali and AHP pretreatments performed better in delignification. Under optimal conditions, the ES pretreated with 1.5% AHP (adjusted by KOH) performed the maximum methane production of 262.2 mL/g VS with a Bd of 95.0%, which increased by 334.1% than untreated ES. This paper not only provides the theoretical data about methane production performance of ES but also gives practical guidance for efficient utilization of similar vegetable straw biowastes, which is also promising for large-scale industrial applications in the future.

show abstract

Section: Introductionmentioning

confidence: 99%

Influences of Organic Loading, Feed-To-Inoculum Ratio, And Different Pretreatment Strategies On The Methane Production Performance of Eggplant Stalk

Zhu¹,

Zhang²,

Song³

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…Moreover, traditionally, land has been used to grow nonfood crops, e.g., tobacco or crops to produce alcoholic beverages, so its use to produce energy should be considered at the same level of acceptance. In any case, if land is not used to produce energy, food crop residues may still be used to provide biofuels, thus minimizing the polluting effect of these wastes [7,8].…”

Section: Introductionmentioning

confidence: 99%

Universal Kinetic Model to Simulate Two-Step Biodiesel Production from Vegetable Oil

2020

View full text Add to dashboard Cite

To date, to simulate biodiesel production, kinetic models from different authors have been provided, each one usually applied to the use of a specific vegetable oil and experimental conditions. Models, which may include esterification, besides transesterification simulation, were validated with their own experimental conditions and raw material. Moreover, information about the intermediate reaction steps, besides catalyst concentration variation, is either rare or nonexistent. Here, in this work, a universal mathematical model comprising the chemical kinetics of a two-step (esterification and transesterification) vegetable oil-based biodiesel reaction is proposed. The proposed model is universal, as it may simulate any vegetable oil biodiesel reaction from the literature. For this purpose, a mathematical model using the software MATLAB has been designed. Using the mathematical model, the estimation of mass variation with time, of both reactants and products, as well as glyceride conversion and homogeneous catalyst concentration variation (instead of only alcohol/catalyst solution) are allowed. Moreover, analysis of the influence of some important variables affecting the reaction kinetics of biodiesel production (e.g., catalyst concentration), along with comparison and model validation with data from different authors may be carried out. In addition, Supplementary material with a collection of 290 rate constants, derived from 55 different experiments using different vegetable oils and conditions is provided.

show abstract

Effects of urea addition on anaerobic digestion characteristics of hulless barley straw pretreated with KOH

Liu

Du²,

Li³

et al. 2022

J Mater Cycles Waste Manag

View full text Add to dashboard Cite

Improving the methane production from zucchini stem by response surface methodology and different pretreatments

Cited by 13 publications

References 32 publications

Influences of Organic Loading, Feed-To-Inoculum Ratio, And Different Pretreatment Strategies On The Methane Production Performance of Eggplant Stalk

Influences of Organic Loading, Feed-To-Inoculum Ratio, And Different Pretreatment Strategies On The Methane Production Performance of Eggplant Stalk

Universal Kinetic Model to Simulate Two-Step Biodiesel Production from Vegetable Oil

Effects of urea addition on anaerobic digestion characteristics of hulless barley straw pretreated with KOH

Contact Info

Product

Resources

About