Nov 9, 2026
A nitrogen circular economy starts with two facts. First, the fertiliser industry uses roughly 200 million tonnes of nitrogen every year. Almost all of it comes from atmospheric nitrogen, fixed with enormous quantities of fossil energy. Second, waste streams discharge...
Nov 9, 2026
Ammonia recovery for food processing wastewater turns a cost into a product. A large dairy processing plant may generate enough ammoniacal nitrogen to produce 200+ tonnes of ammonium hydroxide per year. That product has industrial, agricultural and organic-input...
Nov 9, 2026
Landfill leachate ammonia treatment defeats many biological systems, so several Hong Kong facilities use thermal stripping instead. They run OTAR® Variant 1 on waste heat from landfill gas engines. As a result, they meet strict nitrogen discharge limits without...
Nov 9, 2026
Ammonia recovery vs struvite precipitation comes down to one question: which nutrient do you need to recover? Struvite mainly recovers phosphorus, while OTAR® mainly recovers nitrogen. For most high-TAN streams, the two technologies complement each other rather than...
Aug 28, 2026
OTAR®’s business case rests on three simultaneous value streams. Together, they frequently produce payback periods that compete favourably with conventional capital investment. For most operators, the investment decision comes down to three questions: what are...
Aug 28, 2026
OTAR® Variant 2 absorbs stripped ammonia into water instead of acid. As a result, it produces ammonium hydroxide eligible for OMRI listing (or equivalent Australian organic input certification) — a premium certification that commands higher market value and serves a...
