MAXIMUM RATE OF SOLID PIG SLURRY IN ORGANO-MINERAL FERTILIZER FORMULATION

被引:0
作者
Lotfi, Khiari [1 ]
Etienne, Parent Leon [1 ]
Antoine, Karam [1 ]
机构
[1] Univ Laval, ERSAM, Dept Soils & Agrifood Engn, Quebec City, PQ, Canada
来源
12TH INTERNATIONAL MULTIDISCIPLINARY SCIENTIFIC GEOCONFERENCE, SGEM 2012, VOL. IV | 2012年
关键词
solid pig slurry; fertilizer formulation; Canadian fertilizer standards; PHOSPHORUS; AMMONIA; SORPTION; ACID; PEAT;
D O I
暂无
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
There is an increasing interest in the recycling of by-products and waste materials with low concentration of nutrients, such as the separated solid fraction of pig slurry with or without composting (SPS), for land application as fertilizers or soil amendments. In Canada, these 'low-analysis` fertilizers are regulated by The Fertilizers Act and Regulations. According to the Canadian Fertilizer Act, % N + % P2O5 + % K2O in a mixed fertilizer (low-analysis fertilizer + mineral fertilizers) should be not be less than 24%. In the context of sustainable agriculture, it is necessary to develop organo-mineral fertilizers (OMF) containing SPS that do not pose a risk of adverse effects to the environment. This study aimed to determine the maximum amount of SPS that can be added to mineral fertilizers in order to obtain an OMF that contain 24% of N+P2O5+K2O. Two commercial mineral fertilizers, monoammonium phosphate [MAP (11-52-0)] and diammonium phosphate [DAP (18-46-0)], and 14 pig slurries were used in this study. The concentration of total N in SPS ranged from 0.9 to 4.3%, P2O5 from 2.3 to 14.2% and K2O from 0.6 to 4.0%. The amount of N+P2O5+K2O varied from 5.2% in SPS obtained by means of flocculation using a polymer + rock dust to 19.1% in SPS obtained by means of flocculation-sedimentation using magnesium by-products. The maximum amount of SPS to be used in mineral fertilizers mixture varied from 68 to 89% by weight of the OMF, depending of SPS type. There is obviously a great deal of research needed to optimize manufacturing starter OMF pellets containing more SPS than ammonium phosphate fertilizers.
引用
收藏
页码:133 / 140
页数:8
相关论文
共 18 条
  • [1] AMMONIA SORPTION BY PEAT AND N-FRACTIONATION IN SOME PEAT-AMMONIA SYSTEMS
    ABBES, C
    PARENT, LE
    KARAM, A
    [J]. FERTILIZER RESEARCH, 1993, 36 (03): : 249 - 257
  • [2] Pig manure treatment by organic bed biofiltration
    Buelna, Gerardo
    Dube, Rino
    Turgeon, Nicolas
    [J]. DESALINATION, 2008, 231 (1-3) : 297 - 304
  • [3] Characterization of pig slurry with reference to flocculation and separation
    Christensen, Morten Lykkegaard
    Hjorth, Maibritt
    Keiding, Kristian
    [J]. WATER RESEARCH, 2009, 43 (03) : 773 - 783
  • [4] Technical and economical assessment of formic acid to recycle phosphorus from pig slurry by a combined acidification-precipitation process
    Daumer, M. -L.
    Picard, S.
    Saint-Cast, P.
    Dabert, P.
    [J]. JOURNAL OF HAZARDOUS MATERIALS, 2010, 180 (1-3) : 361 - 365
  • [5] Light scattering study on the size and structure of calcium phosphate/hydroxyapatite flocs formed in sugar solutions
    Greenwood, Judy
    Rainey, Tom
    Doherty, William O. S.
    [J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2007, 306 (01) : 66 - 71
  • [6] Solid-liquid separation of animal slurry in theory and practice. A review
    Hjorth, M.
    Christensen, K. V.
    Christensen, M. L.
    Sommer, S. G.
    [J]. AGRONOMY FOR SUSTAINABLE DEVELOPMENT, 2010, 30 (01) : 153 - 180
  • [7] Soil carbon, nitrogen and phosphorus contents in maize plots after 14 years of pig slurry applications
    Hountin, JA
    Couillard, D
    Karam, A
    [J]. JOURNAL OF AGRICULTURAL SCIENCE, 1997, 129 : 187 - 191
  • [8] Discrepancy in Response of Rice Yield and Soil Fertility to Long-Term Chemical Fertilization and Organic Amendments in Paddy Soils Cultivated from Infertile Upland in Subtropical China
    Liu Ming
    Li Zhong-pei
    Zhang Tao-lin
    Jiang Chun-yu
    Che Yu-ping
    [J]. AGRICULTURAL SCIENCES IN CHINA, 2011, 10 (02): : 259 - 266
  • [9] McCauley A., 2009, SELF STUDY COURSE MS
  • [10] Estimation of nutrient values of pig slurries in Southeast Spain using easily determined properties
    Moral, R
    Perez-Murcia, MD
    Perez-Espinosa, A
    Moreno-Casells, J
    Paredes, C
    [J]. WASTE MANAGEMENT, 2005, 25 (07) : 719 - 725