Modelling vinasse/cotton waste ratio incubation for optimum composting

被引:22
作者
Díaz, MJ
Eugenio, ME
Jiménez, L
Madejón, E
Cabrera, F
机构
[1] EPS Univ Huelva, Dept Ingn Quim, Palos De La Frontera 21819, Huelva, Spain
[2] Univ Cordoba, Dept Ingn Quim, Cordoba 10071, Spain
[3] CSIC, Inst Recursos Nat & Agrobiol, E-41080 Seville, Spain
关键词
biodegradability; compost; vinasse; cotton waste;
D O I
10.1016/S1385-8947(02)00252-8
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
A central composite experimental design was used to investigate the influence of incubation conditions (vinasse added and operation time) for vinasse/cotton waste mixtures on the properties of products obtained (pH, electrical conductivity, organic matter, Kjeldahl-N, C/N ratio, biodegradability, Kjeldahl-N losses and germination index) in order to determine the best in-vessel composting conditions. The range of the independent variable measured was 0-80% for vinasse added and 1-50 days for operation time. A second-order polynomial model consisting of two independent process variables was found to accurately describe the vinasse/cotton waste incubation. The differences between the experimental values and those estimated by using the equations never exceeded 10% of the former. Obtaining products with acceptable chemical properties, high biodegradability and minimum N losses entails operating at medium operation time (20-35 days) and 20-30% of vinasse added. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:233 / 240
页数:8
相关论文
共 35 条
[11]  
GRAY KR, 1971, PROCESS BIOCHEM, V6, P22
[12]  
Haug R.T., 1993, The practical handbook of compost engineering
[13]  
Jeris J.S., 1973, COMPOST SCI, V14, P8
[14]  
Jeris J.S., 1973, COMPOST SCI, V14, P10
[15]  
KAYHANIAN M, 1992, BIOCYCLE, V33, P58
[16]  
KIPP CE, 1984, BIOCYCLE, V25, P39
[17]  
LOPEZ R, 1992, P INT S IRR HORT CRO
[18]   LOSSES AND TRANSFORMATION OF NITROGEN DURING COMPOSTING OF POULTRY MANURE WITH DIFFERENT AMENDMENTS - AN INCUBATION EXPERIMENT [J].
MAHIMAIRAJA, S ;
BOLAN, NS ;
HEDLEY, MJ ;
MACGREGOR, AN .
BIORESOURCE TECHNOLOGY, 1994, 47 (03) :265-273
[19]  
MATHUR SP, 1993, BIOL AGRIC HORTIC, V10, P65, DOI 10.1080/01448765.1993.9754655
[20]  
MCGREGOR ST, 1981, APPL ENVIRON MICROB, V41, P1321