Optimization of lignocellulolytic bacterial inoculum and substrate mix for lignocellulose degradation and product quality on co-composting of green waste with food waste

被引：15

作者：

Soto-Paz, Jonathan ^{[1
]}

Ricardo Oviedo-Ocana, Edgar ^{[1
]}

Angelica Angarita-Rangel, Maria ^{[2
]}

Rodriguez-Florez, Lesly, V ^{[2
]}

Johana Castellanos-Suarez, Laura ^{[3
]}

Nabarlatz, Debora ^{[4
]}

Sanchez-Torres, Viviana ^{[2
]}

机构：

[1] Univ Ind Santander, Fac Ingen Fisicomecan, Grp Invest Recurso Hidr & Saneamiento Ambiental G, Carrera 27 Calle 9 Ciudad Univ, Bucaramanga, Colombia

[2] Univ Ind Santander, Escuela Ingn Quim, Grp Invest Ciencia & Tecnol Alimentos CICTA, Bucaramanga, Colombia

[3] Serv Nacl Aprendizaje SENA, Ctr Atenc Sect Agr, Grp Invest & Desarrollo Cacao & Chocolateria CHOC, Piedecuesta, Colombia

[4] Univ Ind Santander, Escuela Ingn Quim, Grp Invest Tecnol Valorizat Residuos & Fuentes Ag, Bucaramanga, Colombia

来源：

BIORESOURCE TECHNOLOGY | 2022年 / 359卷

关键词：

Bacteria; Composting; Food waste; Green waste; Optimization; HUMIC FRACTIONS; INOCULATION; EFFICIENCY; MICROORGANISMS; COMMUNITIES; PERFORMANCE; PARAMETERS; MICROBIOTA; DIVERSITY; DESIGN;

D O I：

10.1016/j.biortech.2022.127452

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The present study evaluates the effect of the mixing ratio of substrates and inoculation with lignocellulolytic bacteria on green waste (GW) and food waste (FW) co-composting. A Box-Behnken design was used to simul-taneously optimize the lignocellulose degradation (%LD) and end-product quality. The best operational condi-tions were 4.85*10(5) CFU g(-1) of Bacillus sp. F3X3 and 1.44*10(6) CFU g(-1) of Paenibacillus sp. F1A5 with a substrate mixture containing 50% GW, 32.5% unprocessed FW, 2.5% processed FW, 13% sawdust, and 2% phosphate rock; with a C/N ratio of 27. Under these conditions, the %LD was 33% and the end-product has pH 8.3, TOC 22,4%, TN 1,7%, and a germination index of 103%. Therefore, the product complies with quality standards for organic fertilizers. The results of this study allow the identification of appropriate strategies to optimize GW composting, increasing the degradation of lignocellulose and improving the end-product quality.

引用

页数：10

共 49 条

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