Paper Title:
Processing of Human Feces Using Beanstalk and Sawdust as Matrix in a Composting-Type Eco-Toilet
  Abstract

This study aims to investigate the changing of operational parameters and waste reducing rate, as well as the possibility of using produced composts as organic fertilizer in an on-site composting-type eco-toilet filled with mixed materials of beanstalk and sawdust as reaction matrix. During the 23-week period, change of pH was divided into three phases: acid phase (6.63-7.00), alkaline phase (9.00-9.71) and stable phase (8.10-9.00). With continuous input of feces and urine, total nitrogen, total phosphorus and total potassium contents was increased to reach 4.3%, 1.06% and 2.03%, respectively. Organic matter content decreased from 95.6% to 76.2% and the total reduction rate of dry weight increased gradually from 46.93% to 92.29%. The composts could be used as organic fertilizer at suitable concentrations. The suitable concentration for cucumber, cabbage and rape growth was obtained to be at compost ratios of 1:15-1:30, 1:15-1:20 and 1:25-1:40, respectively. Microbial utilization efficiency of human feces and urine could be improved when the mixed material of beanstalk and sawdust was used as reaction matrix in an on-sit composting-type eco-toilet. The mixed materials with beanstalk and sawdust at a volume ratio of 1:1 was found to be efficient to transform human feces and urine into organic fertilizer rich in the elements of N, P and K.

  Info
Periodical
Advanced Materials Research (Volumes 156-157)
Edited by
Jingtao Han, Zhengyi Jiang and Sihai Jiao
Pages
24-29
DOI
10.4028/www.scientific.net/AMR.156-157.24
Citation
N. Liu, X. Qian, G. F. Lu, L. M. Gao, G. X. Ning, Y. Mei, Z. M. Huang, B. H. Sheng, X. L. Kai, Z. F. Wang, "Processing of Human Feces Using Beanstalk and Sawdust as Matrix in a Composting-Type Eco-Toilet", Advanced Materials Research, Vols. 156-157, pp. 24-29, 2011
Online since
October 2010
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Price
$32.00
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