Zobrazeno 1 - 10
of 11
pro vyhledávání: '"J. N. Zvimba"'
Modelling energy efficiency and generation potential in the South African wastewater services sector
Autor:
J. N. Zvimba, Eustina V. Musvoto
Publikováno v:
Water science and technology : a journal of the International Association on Water Pollution Research. 81(5)
About 55% of energy used in the South African water cycle is for wastewater treatment, with the bulk of this energy associated with aeration in biological processes. However, up to 15% of wastewater energy demand can be offset by energy generation fr
Publikováno v:
Water Science and Technology. 75:1014-1024
This study investigated passive neutralization of acid mine drainage using basic oxygen furnace slag as neutralization material over 90 days, with monitoring of the parameters' quality and assessment of their removal kinetics. The quality was observe
Publikováno v:
Environmental Technology. 36:2515-2523
This study investigated the implications of using two grades of limestone from a paper and pulp industry for neutralization of acid mine drainage (AMD) in a pilot sequencing batch reactor (SBR). In this regard, two grades of calcium carbonate were us
Publikováno v:
Physics and Chemistry of the Earth, Parts A/B/C. :140-144
Most wastewater treatment plants (WWTPs) employ activated sludge processes to treat wastewater. The bacteria found in these systems degrade organic matter but are very sensitive to toxic compounds such as heavy metals, among others. The impact of eme
Publikováno v:
Water SA; Vol 42, No 1 (2016); 72-81
Water SA, Volume: 42, Issue: 1, Pages: 72-81, Published: JAN 2016
Water SA, Volume: 42, Issue: 1, Pages: 72-81, Published: JAN 2016
Increased use of engineered nanoparticles (ENPs) has resulted in their entry into municipal wastewater treatment plants (WWTPs) as their final sinks. However, the adverse impact of ENPs on the bacterial activity in the activated sludge WWTPs is not y
Publikováno v:
Water science and technology : a journal of the International Association on Water Pollution Research. 68(6)
This study investigated Fe(II) oxidation during acid mine drainage (AMD) neutralization using CaCO3 in a pilot-scale Sequencing Batch Reactor (SBR) of hydraulic retention time (HRT) of 90 min and sludge retention time (SRT) of 360 min in the presence
Publikováno v:
Journal of environmental science and health. Part A, Toxic/hazardous substancesenvironmental engineering. 48(8)
Sulphate removal from sodium sulphate-rich brine using barium hydroxide and recovery of the barium salts has been investigated. The sodium sulphate-rich brine treated with different dosages of barium hydroxide to precipitate barium sulphate showed su
Publikováno v:
Water science and technology : a journal of the International Association on Water Pollution Research. 65(9)
Precipitated CaCO(3) compounds recovered from pulped waste gypsum using some carbonate and hydroxide-based reagents were evaluated for their utilization in acid mine drainage (AMD) neutralization. The neutralization potentials, acid neutralization ca
Publikováno v:
Water science and technology : a journal of the International Association on Water Pollution Research. 65(2)
Batch regeneration of barium carbonate (BaCO(3)) from barium sulphide (BaS) slurries by passing CO(2) gas into a pilot-scale bubbling column reactor under ambient conditions was used to assess the technical feasibility of BaCO(3) recovery in the Alka
Publikováno v:
Water science and technology : a journal of the International Association on Water Pollution Research. 63(12)
The dissolution characteristics of CaS in the presence of CO 2 has been investigated by monitoring sulfide speciation, solution conductivity and pH during dissolution. The sulfide speciation associated with CaS dissolution was utilized for metal prec