Further extensive investigations are required to find a steady and reliable source of the sludge, with minimal compositional variability for fearless and optimum utilization.
The effect of the source of powder (grinding sludge or oxide scale), quantity of reducing agent cum lubricant, i.e., graphite powder, compaction parameters such as compaction pressure, compact weight and sintering parameters such as sintering temperature and time on reduction and densification characteristics were analysed using Taguchi based experimental design.
The original source of the active sludge used to inoculate the pilot-scale coupled MFC A/O system came from a secondary sedimentation tank at the Neihu WWTP, Taipei, Taiwan, which is used to treat PPCP-contained sewage.
To identify the potential parameters affecting the variable fractions of sludge components, wastewater source as well as design and operational parameters of WWTPs were studied using statistical methods.
The nature of sludge is dependent on the source water quality and the chemicals dosed and account for a high level of WTR variability (Table 2).
The principal source of tellurium is from anode sludges produced during the electrolytic refining of blister copper.
The possible sources of Ni in sludge are the dyes, paints and coated steel pipes used in industry.
On the corner where road meets pavement is a shared open drain with grey sludge, likely the source of the odour in the air.
The utilization of Bokbunja (Rubus coreanus) sludge as a source of reductant was investigated to develop an eco-friendly indigo dyeing process.
A dual-chambered microbial fuel cell, fed with slaughterhouse wastewater with an anaerobic mixed sludge as a source of inoculum was used.
