A method of treating putrescible cakes to reduce the E. Coli and odour present in the cake and prevent further odour generation comprising the step of maintaining the cake under substantially anoxic condition in the presence of ammonium and/or nitrate moieties at pH7.5 to pH10.5 for a period of more than 1 day, the cake having a solids content of between 20% to 75% by weight.

 
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> Novel catalyst useful for removal of hydrogen suiplhide from gas and its conversion to sulphur. A process for preparing such catalyst and a method for removing of hydrogen sulphide using said catalyst

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