Singaporean scientists have developed a method of converting sewage sludge into hydrogen and animal feed.
Researchers at the Nanyang Technological University (NTU), Singapore, created a three-step process powered by solar electricity using mechanical, chemical and biological techniques to challenge conventional technologies like anaerobic digestion (AD).
Sewage sludge is a semi-solid by-product of wastewater treatment, consisting of organic and inorganic materials, microorganisms, heavy metals and other contaminants.
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