Lignin obtained by acidification of an alkaline extract of wood Anaerobic digestion (AD): is a biological process similar in many ways to composting. It is a natural treatment process and, as in composting, bacteria break down organic matter and reduce its bulk or ‘mass’.
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Walker Industries has announced its Niagara Renewable Natural Gas (RNG) facility has reached its final stages of commissioning, setting a milestone as the largest RNG project in Ontario, Canada
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