The key tasks are to:

  • T5.1
    This is regarding investigations into graphene oxide based adsorbents and includes:
    • T5.1.1 -Optimisation and scalable synthesise of graphene based adsorbents. The optimization process will involve investigations into toxicity and anti-bacterial (disinfection) properties of thesynthesized adsorbents and the study of the surface chemistry including: surface energy andhydrophilic/hydrophobic and corrosion behaviours;
    • T5.1.2– Investigation of the adsorbents ECs treatment efficiency for real and synthetic waste streams spiked with single and multiple EC types under a range of environmental conditions;
    • T5.1.3-Design optimisation of the adsorbent basedscalable treatment system. This includes an assessment of the impact of various scenarios: forexample, variations in temperature, pH, contact time, pollutants concentrations, adsorbentsconcentrations (thickness/cross-sectional area) and filtration column shape, size and configuration on influent greywater quality and flow. The experiments will help to develop optimal design andoperation specifications.
    • T5.1.4-Investigation of adsorbents reusability and development ofadsorbents regeneration strategies;
    • T5.1.5-Packaging of a portable treatment device for furthertesting and its provision as a post treatment option in India;
  • T5.2
    This includes the testing theeffectiveness of PPT, development of pilot demonstration meeting Indian needs. The sub tasksare:
    • T5.2.1 -EC degradation potential assessment of PPT under different electrode configurations,voltage and frequency;
    • T5.2.2– PPT treatment potential investigation for multiple ECs usually foundin treated wastewaters and water under different operating conditions (e.g. contact time,concentration, liquid volume and depth etc and presence of various natural componentscommonly present in water such as turbidity, alkalinity, humic substances, pH etc;
    • T5.2.3-Understanding the science behind the degradation and quantification of risk reduction in terms oftoxicity assessment;
    • T5.2.4-Development of a continuous reactor system and scaling up to a pilotscale system;
    • T5.2.5-Exploration of the composite use of graphene based adsorbents and PPT tofacilitate efficient and compact EC treatment; and
  • T5.3
    This pertains to the exploration of energyefficient membranes (LoS from KPL, Table 1) for ECs removal and the key tasks are:
    • T5.3.1 -Assessment of the effectiveness of membranes for ECs influx of concentrations normallyencountered after secondary treatment/clarification and for shock loadings;
    • T5.3.2– Investigationinto the membrane operation parameters; and
    • T5.3.3-Membrane fouling monitoring; and
  • T5.4Sustainability evaluation of optimal graphene, AOP-PPT and membrane based individual andcomposite systems as proposed in T4.8.