Product sales revenue (Tables)

9 Months Ended

Jul. 31, 2022

Product sales revenue [Abstract]

Schedule of product sales revenue

	Three months ended July 31, 2022	Three months ended July 31, 2021	Nine months ended July 31, 2022	Nine months ended July 31, 2021
	$	$	$	$
Product sales revenue recognized in the period1	4,992,231	1,232,423	11,183,309	2,153,422
Fair value pricing adjustments	(7,331,180)	361,140	(1,608,689)	529,109
Product sales revenue	(2,338,949)	1,593,563	9,574,620	2,682,531
Recycling services revenue recognized in the period1	372,510	115,560	950,134	301,216
Revenue	(1,966,439)	1,709,123	10,524,754	2,983,747

1Revenue recognized in the period before fair value pricing adjustments was $5,364,741 and $12,133,443, respectively, for the three and nine months ended July 31, 2022 (three and nine months ended July 31, 2021: $1,347,983 and $2,454,638, respectively).