Fly-ash from a pulp and paper mill: A potential liming material for agricultural soils in Western Newfoundland.

Canadian Biosystems Engineering

article

Gnanakaran Maheswaran¹  Manokararajah Krishnapillai¹  Doreen Churchill²  Lakshman Galagedara¹ 

[1] School of Science and the Environment, Grenfell Campus, Memorial University of Newfoundland;Canadian Forest Service, Atlantic Forestry Centre

关键词: Fly-ash;    heavy metal;    liming;    pH;    Western Newfoundland;   

DOI  :  10.7451/CBE.2019.61.1.9

学科分类：农业科学（综合）

来源: Canadian Society of Agricultural Engineering

【 摘 要 】

Most agricultural soils in Western Newfoundland are acidicand need lime to raise soil pH to be productive. CornerBrook Pulp and Paper Ltd produces a substantial amount offly-ash, disposed of at a local landfill. This study wasconducted to assess the potential for using fly-ash as aliming material for agricultural soil (pH 5.5) in WesternNewfoundland. Heavy metal concentration in the soil andfly-ash were analysed and compared with soil and compostguidelines. As per quality guidelines, only part of the limerequirement can be substituted by fly-ash. The percentagemay vary depending on initial soil pH and the desired pHfor the crop to be grown. The total lime requirement can bemet when fly-ash is applied combined with other soilamendments low in trace element concentration.

【 授权许可】

CC BY