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Pretreatment of yard waste using advanced oxidation processes for enhanced biogas production
Biomass & Bioenergy ( IF 6 ) Pub Date : 2020-09-23 , DOI: 10.1016/j.biombioe.2020.105780
Sameena N. Malik , Krishna Madhu , Vasant A. Mhaisalkar , Atul N. Vaidya , Sandeep N. Mudliar

This work investigated the effect of Fenton, ozone and peroxone pretreatment process on yard waste for biogas production enhancement through breakdown of complex lignocellulosic structure. The pretreatment of yard waste was carried out at different experimental conditions of Fenton (ratio: 1:5, 1:10, 1:20, 1:30, 1:40 and 1: 50; doses; 200 mgL−1: 4000 mgL−1 to 800 mgL−1: 16000 mgL−1; time: 30 min–120 min), ozone (pH: 3, 5, 7 & 9; ozone dosage:0.2 g h−1 to 2.5 g h−1; time: 15 min–60 min), and peroxone (doses: 1 mL to 5 mL) to obtain maximum biogas production. The results indicated that cellulose, hemicellulose and lignin content of yard waste decreased during pretreatment process with increased TRS concentration and in turn improves the biogas production. Pretreatment of yard waste using peroxone process resulted in maximum enhancement of TRS concentration up to 470 mg g−1 biomass from initial value of 55.3 mg g−1 biomass at an optimized condition of ozone dose of 1.8 g h−1 for 30 min with 1 mL H2O2 at pH 3. Subsequently, peroxone pretreatment showed the highest biogas production of 210 mL g−1 VS (63% CH4) as compared to control only 80 mL g−1 VS (35% CH4). The GC-MS and FTIR analysis of pretreated yard waste confirms the degradation of complex lignocellulosic structure.



中文翻译:

使用先进的氧化工艺预处理院子垃圾,以提高沼气产量

这项工作研究了Fenton,臭氧和过二酮预处理工艺对院子废物的影响,以通过分解复杂的木质纤维素结构来提高沼气产量。院子垃圾的预处理在Fenton的不同实验条件下进行(比率:1:5、1:10、1 :20、1:30、1 :40和1:50;剂量; 200 mgL -1:4000 mgL -1至800 mgL -1:16000 mgL -1 ;时间:30分钟至120分钟),臭氧(pH:3,5,7&9;臭氧剂量:0.2 g h -1至2.5 g h -1; 时间:15分钟至60分钟)和过氧化物(剂量:1 mL至5 mL)以获得最大的沼气产量。结果表明,在预处理过程中,随着TRS浓度的增加,庭院废物中的纤维素,半纤维素和木质素含量降低,从而提高了沼气产量。在最佳臭氧剂量为1.8 g h -1的条件下,用1 mL进行30分钟的过氧化氢处理预处理可最大程度地提高TRS浓度,从55.3 mg g -1生物量的初始值到470 mg g -1生物量H 2 O 2在pH 3处。随后,过氧化物酶预处理显示最高沼气产生量为210 mL g -1  VS(63%CH 4与对照相比仅80 mL g -1  VS(35%CH 4)。经预处理的庭院废物的GC-MS和FTIR分析证实了复杂的木质纤维素结构的降解。

更新日期:2020-09-23
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