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| 1 | Autoheated thermophilic aerobic sludge digestion and metal bioleaching in a two-stage reactor system显示文摘A two-stage process has been developed for stabilization of sludge and removal of heavy metals from the secondary activated sludge with high rate of energy and time conservation.The first stage of the process involves autoheated thermophilic aerobic digestion at 55-60°C inoculated with less-acidophilic thermophilic sulfur-oxidizing microorganisms(ATAD).The results show that it is possible to maintain the autoheated conditions(55-60°C) in the ATAD reactor up to 24 hr,leading to reduction of 21% total solids(TS),27% volatile solids(VS),27% suspended solids(SS) and 33% volatile suspended solids(VSS) from the sludge.The sludge pH also decreased from 7 to 4.6 due to the activity of less-acidophilic thermophilic microorganisms.In the second stage operation,the digested sludge(pH 4.6,TS 31.6 g/L) from stage one was subjected to bioleaching in a continuous stirred tank reactor,operated at mean hydraulic retention times(HRTs) of 12,24 and 36 hr at 30°C.An HRT of 24 hr was found to be sufficient for removal of 70% Cu,70% Mn,75% Ni,and 80% Zn from the sludge.In all,39% VSS,76% Cu,78.2% Mn,79.5% Ni and 84.2% Zn were removed from the sludge in both the stages. | Rohan Jain Ashish Pathak T.R.Sreekrishnan M.G.Dastidar | 2010 | Journal of Environmental Sciences2010，22，2： | 7 |
| 2 | Bioleaching of heavy metals from sewage sludge: A review显示文摘 | Ashish Pathak M.G. Dastidar T.R. Sreekrishnan | 2008 | Journal of Environmental Management2008，，8： | 2 |
| 3 | Bioleaching of heavy metals from sewage sludge: a review 显示文摘 | Ashish Pathak Dastidar M G Sreekrishnan T R | 2009 | Environmental Management2009，90，8： | 1 |
| 4 | Bioleaching of heavy metals from sewage sludge: A review显示文摘 | Ashish Pathak M.G. Dastidar T.R. Sreekrishnan | 2008 | Journal of Environmental Management2008，，8： | 1 |
| 5 | Bioleaching of heavy metals from sewage sludge:A review显示文摘 | Pathak Ashish Dastidar M G Sreekrishnan T R | 2009 | Journal ofEnvironmental Management2009，90，： | 1 |
| 6 | Bioleaching of heavy metals from sewage sludge by indigenous iron-oxidizing microorganisms using ammonium ferrous sulfate and ferrous sulfate as energy sources: A comparative study显示文摘 | Ashish Pathak M.G. Dastidar T.R. Sreekrishnan | 2009 | Journal of Hazardous Materials2009，，1： | 1 |
| 7 | Bioleaching of heavy metals from sewage sludge: A review显示文摘 | Ashish Pathak M.G. Dastidar T.R. Sreekrishnan | 2008 | Journal of Environmental Management2008，，8： | 1 |
| 8 | Natural polyphenols in the management of major depression显示文摘 | Lokesh Pathak Yadvendra Agrawal Ashish Dhir | 2013 | Expert Opinion on Investigational Drugs2013，，7： | 1 |
| 9 | Clinical profile and outcome of patients with acromegaly according to the 2014 consen- sus guidelines:Impact of a multi-disciplinary team 显示文摘 | Pinaki Dutta Abhishek Hajela Ashish Pathak | 2015 | Neurology Indi- a2015，63，： | 1 |
| 10 | Bioleaching of heavy metals from sewage sludge: A review显示文摘 | Ashish Pathak M.G. Dastidar T.R. Sreekrishnan | 2008 | Journal of Environmental Management2008，，8： | 1 |
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