Error message

  • Deprecated function: Return type of DatabaseStatementBase::execute($args = [], $options = []) should either be compatible with PDOStatement::execute(?array $params = null): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2244 of /home/envicon/public_html/includes/database/database.inc).
  • Deprecated function: Return type of DatabaseStatementEmpty::current() should either be compatible with Iterator::current(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2346 of /home/envicon/public_html/includes/database/database.inc).
  • Deprecated function: Return type of DatabaseStatementEmpty::next() should either be compatible with Iterator::next(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2346 of /home/envicon/public_html/includes/database/database.inc).
  • Deprecated function: Return type of DatabaseStatementEmpty::key() should either be compatible with Iterator::key(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2346 of /home/envicon/public_html/includes/database/database.inc).
  • Deprecated function: Return type of DatabaseStatementEmpty::valid() should either be compatible with Iterator::valid(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2346 of /home/envicon/public_html/includes/database/database.inc).
  • Deprecated function: Return type of DatabaseStatementEmpty::rewind() should either be compatible with Iterator::rewind(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2346 of /home/envicon/public_html/includes/database/database.inc).
  • Deprecated function: strlen(): Passing null to parameter #1 ($string) of type string is deprecated in drupal_random_bytes() (line 2268 of /home/envicon/public_html/includes/bootstrap.inc).
  • Deprecated function: Optional parameter $type declared before required parameter $key is implicitly treated as a required parameter in include_once() (line 1389 of /home/envicon/public_html/includes/bootstrap.inc).
  • Deprecated function: Return type of DateObject::__wakeup() should either be compatible with DateTime::__wakeup(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in include_once() (line 143 of /home/envicon/public_html/sites/all/modules/date/date_api/date_api.module).
  • Deprecated function: Return type of DateObject::format($format, $force = false) should either be compatible with DateTime::format(string $format): string, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in include_once() (line 143 of /home/envicon/public_html/sites/all/modules/date/date_api/date_api.module).
  • Deprecated function: Return type of DateObject::setTimezone($tz, $force = false) should either be compatible with DateTime::setTimezone(DateTimeZone $timezone): DateTime, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in include_once() (line 143 of /home/envicon/public_html/sites/all/modules/date/date_api/date_api.module).
  • Deprecated function: Optional parameter $input declared before required parameter $form_state is implicitly treated as a required parameter in include_once() (line 1389 of /home/envicon/public_html/includes/bootstrap.inc).
  • Deprecated function: Optional parameter $data declared before required parameter $name is implicitly treated as a required parameter in require_once() (line 341 of /home/envicon/public_html/includes/module.inc).
  • Deprecated function: Optional parameter $data declared before required parameter $name is implicitly treated as a required parameter in require_once() (line 341 of /home/envicon/public_html/includes/module.inc).
  • Deprecated function: Optional parameter $file declared before required parameter $entity_type is implicitly treated as a required parameter in require_once() (line 341 of /home/envicon/public_html/includes/module.inc).
  • Deprecated function: Optional parameter $account declared before required parameter $entity_type is implicitly treated as a required parameter in require_once() (line 341 of /home/envicon/public_html/includes/module.inc).
  • Deprecated function: Optional parameter $entity declared before required parameter $entity_type is implicitly treated as a required parameter in require_once() (line 341 of /home/envicon/public_html/includes/module.inc).
  • Deprecated function: Optional parameter $account declared before required parameter $entity_type is implicitly treated as a required parameter in require_once() (line 341 of /home/envicon/public_html/includes/module.inc).
  • Deprecated function: Optional parameter $values declared before required parameter $entity_type is implicitly treated as a required parameter in require_once() (line 341 of /home/envicon/public_html/includes/module.inc).
  • Deprecated function: Optional parameter $view_mode declared before required parameter $entity_type is implicitly treated as a required parameter in require_once() (line 341 of /home/envicon/public_html/includes/module.inc).
  • Deprecated function: Optional parameter $langcode declared before required parameter $entity_type is implicitly treated as a required parameter in require_once() (line 341 of /home/envicon/public_html/includes/module.inc).
  • Deprecated function: Optional parameter $input declared before required parameter $form_state is implicitly treated as a required parameter in require_once() (line 8 of /home/envicon/public_html/sites/all/modules/multiupload_filefield_widget/multiupload_filefield_widget.module).
  • Deprecated function: Optional parameter $conditions declared before required parameter $data is implicitly treated as a required parameter in include_once() (line 1389 of /home/envicon/public_html/includes/bootstrap.inc).
  • Deprecated function: Optional parameter $item declared before required parameter $complete_form is implicitly treated as a required parameter in include_once() (line 1389 of /home/envicon/public_html/includes/bootstrap.inc).
  • Deprecated function: rtrim(): Passing null to parameter #1 ($string) of type string is deprecated in url() (line 2349 of /home/envicon/public_html/includes/common.inc).
  • Deprecated function: strpos(): Passing null to parameter #1 ($haystack) of type string is deprecated in url_is_external() (line 2393 of /home/envicon/public_html/includes/common.inc).
  • Deprecated function: str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in url_is_external() (line 2395 of /home/envicon/public_html/includes/common.inc).
  • Deprecated function: ltrim(): Passing null to parameter #1 ($string) of type string is deprecated in url() (line 2311 of /home/envicon/public_html/includes/common.inc).
Chief Executive Officer

Prof Karoli Nicholas Njau holds BSc. Hons from the University of Dar es Salaam, Tanzania, majoring Process Engineering. He later did his Master degree in Chemical Engineering at the Norwegian Institute of Technology (NTH) Trondheim, Norway. Prof. Njau did his PhD studies at the Technical University Eindhoven, in the Netherlands.

He is currently an Associate Professor and Dean of School of Material, Energy, Water and Environmental Science and Engineering (MEWES) of the Nelson Mandela African Institute of Science and Technology. Prof. Njau is an educator, researcher, leader, and an international consultant on chemical and process engineering; environmental science and engineering; water resource management, industrial ecology; and renewable and clean energy. 

He has participated in a number of interdisciplinary and multidisciplinary  projects/research projects and consultancy services related to: 

  • Planning, design and construction supervision of innovative treatment and management of industrial and domestic effluents
  • Assessment and establishment of environmental management system in industries
  • Water quality analysis, treatment and quality studies
  • River flow assessment and development of watershed management
  • Integrated water resources management
  • Facilitation of water sanitation and hygiene
  • Sustainable management of natural resources for the improvement of livelihoods
  • Promotion of renewable and clean energy
  • Planning, design and construction supervision of innovative technology for treatment and supply potable water to the rural community
  •  and Feasibility and baseline studies. 

Prof Njau is one of ENVICON founder members of and he is the Chief Executive Officer of the Organization.