<?php
$categories = get_the_terms($post->id, 'project-type');
$separator = ', ';
$output = '';
if($categories){
    foreach($categories as $category) {
        $icon = iconize_get_term_icon_by('name', $category->name, 'project-type');
        $output .= '<a href="'.get_term_link( $category->term_id ).'" title="' . esc_attr( sprintf( __( "View all posts in %s" ), $category->name ) ) . '">'.$icon.$category->name.'</a>'.$separator;
    }
    echo trim($output, $separator);
}
?>