Abstract: The present invention provides a method for the preparation of multi-nutrient potassic fertilizer, by recovering potassium from sugarcane molasses based alcohol distillery effluent (commonly known as ‘spent wash’). The process involves pre-treatment of spent wash to clarify the aqueous phase and utilization of the treated spent wash in production of potassic fertilizer. The present invention enables utilisation of spent wash for recovery of value-added product (viz., potash fertiliser of >99% purity) and improves ease of ‘Zero Liquid Discharge’ compliance by subjecting the relatively benign process effluent to industrially practiced techniques for water recovery and salt reclamation.

Abstract: A water sampling device has a rigid body, a top lid, extension members, a horizontal member, a spring, a rod, at least one polymer membrane and a bottom lid. The top lid has a shaft attached to it and the shaft traverses through the horizontal member. The bottom lid is connected to the rod upon which the at least one polymer membrane is attached perpendicularly. The water sampling device undergoes two different stages of lid opening and closing while in operation of collecting water sample to concentrate diversified bacteria from different water depths. The top lid, the shaft and the spring co-operate with the rigid body and the horizontal member such that in a first state, the top lid seals the top end opening while in a second state allows fluid to flow to an inside portion of the rigid body.

Abstract: Molasses based alcohol distilleries generate highly contaminated, dark coloured and foul smelling effluent (bio-methanated spent wash, BMSW, also known as post methanated effluent). While the prevailing practices for treatment of alcohol distillery effluents operate on the premises of “liability management”, high potassium content of spent wash (ca. 2% w/v in BMSW) offers an opportunity for its utilisation in production of potash fertilizers—a major agricultural input. The present invention provides process for potash recovery from BMSW with concomitant environmental remediation of effluent. The process involves pre-treatment of BMSW followed by potash recovery through selective precipitation technique to produce potash fertilizers and activated carbon while generating a relatively benign effluent (>80% remediation). It may further be possible for the alcohol distilleries to achieve ZLD status by incorporating commercially practiced water recovery techniques (viz.

Abstract: The present invention provides a method for the preparation of multi-nutrient potassic fertilizer, by recovering potassium from sugarcane molasses based alcohol distillery effluent (commonly known as ‘spent wash’). The process involves pre-treatment of spent wash to clarify the aqueous phase and utilization of the treated spent wash in production of potassic fertilizer. The present invention enables utilisation of spent wash for recovery of value-added product (viz., potash fertiliser of >99% purity) and improves ease of ‘Zero Liquid Discharge’ compliance by subjecting the relatively benign process effluent to industrially practiced techniques for water recovery and salt reclamation.

Abstract: A water sampling device has a rigid body, a top lid, extension members, a horizontal member, a spring, a rod, at least one polymer membrane and a bottom lid. The top lid has a shaft attached to it and the shaft traverses through the horizontal member. The bottom lid is connected to the rod upon which the at least one polymer membrane is attached perpendicularly. The water sampling device undergoes two different stages of lid opening and closing while in operation of collecting water sample to concentrate diversified bacteria from different water depths. The top lid, the shaft and the spring co-operate with the rigid body and the horizontal member such that in a first state, the top lid seals the top end opening while in a second state allows fluid to flow to an inside portion of the rigid body.

Abstract: Molasses based alcohol distilleries generate highly contaminated, dark coloured and foul smelling effluent (bio-methanated spent wash, BMSW, also known as post methanated effluent). While the prevailing practices for treatment of alcohol distillery effiuents operate on the premises of “liability management”, high potassium content of spent wash (ca. 2% w/v in BMSVV) offers an opportunity for its utilisation in production of potash fertilisers—a major agricultural input. The present invention provides process for potash recovery from BMSW with concomitant environmental remediation of effluent. The process involves pre-treatment of BMSW followed by potash recovery through selective precipitation technique to produce potash fertilisers and activated carbon while generating a relatively benign effluent (>80% remediation). It may further be possible for the alcohol distilleries to achieve ZLD status by incorporating commercially practiced water recovery techniques (viz.

Abstract: The present invention relates to the preparation of novel antibiofouling Thin Film Composite (TFC) Reverse Osmosis (RO) membranes on porous polysulfone (PSf) support of thickness 30-40 micron. TFC-RO membranes were prepared by interfacial polymerization between neat m-phenylenediamine (MPD) in water and pyridine tricarboxylic acid chloride (PTC) or a mixture containing PTC and trimesoyl chloride (TMC) in mixture of hexane+dichloromethane. The best results in terms of flux, NaCl rejection and antibiofouling property were obtained with 2:3-1:1 weight ratio of PTC to TMC. The present invention also relates to the preparation of antibiofouling TFC membranes by the interfacial polymerization between mixture of melamine+MPD and TMC. The best results in terms of antibiofouling property, NaCl rejection and flux were obtained with 1:1 weight ratio of MPD to melamine.