Nickel (N (II)) and cobalt (Co (II)) are often encountered in wastewaters. As conventional
wastewater treatment may only partially remove nickel and cobalt, a large fraction of the …

The effects of Ni (II) and Co (II) on the activated sludge growth rate have been assessed for a
batch growth system, for a range of concentrations between 0 and 320mgL− 1. The activated …

There is little information in the literature to describe the effects of heavy metals on activated
sludge kinetics. The purpose of this study is to evaluate the toxic effect of nickel on activated …

The efficiency of activated sludge plants in the treatment of sewage con taining nickel was
studied. Sewage from a common source was fed to three replicate pilot plants. Nickel …

This paper reviews the evidence for impacts of metals on the growth of selected plants and
on the effects of metals on soil microbial activity and soil fertility in the long-term. Less is …

The literature concerning the significance and behaviour of heavy metals in sewage sludge
treatment and following sludge disposal is reviewed. Particular attention is given to metal …

The combined effects of Ni (II) and Cr (VI) on activated sludge kinetics were studied in this
paper. The metals were added to a synthetic medium with a chemical oxygen demand …

Land application of contaminated waste products has been defended as beneficial use by
some scientists and regulators, based on the premise that the behavior of any toxins …

Copper is an essential element, however, this heavy metal is an inhibitor of microbial activity
at relatively low concentrations. The objective of this study was to evaluate the inhibitory …

The adsorption of Cu, Cd, Ni, Zn, and Cr from synthetic solutions on powdered activated
carbon (PAC), activated sludge, and dried sludge were investigated under laboratory …