My research interests include conversion of waste to resource by treatment and efficient use of marginal water and sludge typically in onsite/decentralized setups. Specifically i study wastewater and greywater treatment, sludge and wet organic waste converstion by biological and thermal treatments as well as efficient use of water for aquaculture purposes; and treatment of aquaculture effluent in recirculating aquaculture and aquaponic systems. Gross has supervised over 60 graduate students, authored/coauthored >110 peer reviewed articles and a monograp